WO2017013680A2 - Lime et fraise à gaine parodontale - Google Patents

Lime et fraise à gaine parodontale Download PDF

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Publication number
WO2017013680A2
WO2017013680A2 PCT/IN2016/050242 IN2016050242W WO2017013680A2 WO 2017013680 A2 WO2017013680 A2 WO 2017013680A2 IN 2016050242 W IN2016050242 W IN 2016050242W WO 2017013680 A2 WO2017013680 A2 WO 2017013680A2
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WIPO (PCT)
Prior art keywords
sheath
dental instrument
head
attachment
pattern
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PCT/IN2016/050242
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English (en)
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WO2017013680A3 (fr
Inventor
Roshan SAKHARKAR
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Individual
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Individual
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Publication of WO2017013680A3 publication Critical patent/WO2017013680A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16—Power-driven cleaning or polishing devices

Definitions

  • This invention relates to the field of biomedical engineering and medical devices.
  • this invention relates to a dental bur and ultrasonic scaler tip for use in dentistry and more particularly to a dental bur or rotating tip and scaler tip / vibrating or oscillating or reciprocating ultrasonic / hand held device tip for removing / abrading a periodontal pocket wall lining of gingival side and cleaning / polishing / smoothing tooth surface , root planing , gingival curettage for reducing / elimination of periodontal pocket depth and treating periodontal disease.
  • Periodontal pocket is well understood in dentistry as one of the most important clinical features of periodontal disease. It is the space between tooth and gingival margin. Periodontal pocket is defined as a pathologically deepened gingival sulcus.
  • Periodontitis is a set of inflammatory diseases affecting the periodontium, i.e., the tissues that surround and support the teeth. Periodontitis is defined as an inflammatory disease of the supporting tissue of the teeth caused by specific microorganisms resulting in progressive destruction of the periodontal ligament and alveolar bone with increased probing depth, and if left untreated, can lead to the loosening and subsequent loss of teeth.
  • Periodontal disease occurs when bacteria colonise the sulcus space between the teeth and gingiva.
  • the bacteria cause inflammation, destroys the inner surface of the sulcus altering the structure from a normal epithelial lining to a pathological epithelium.
  • Periodontal disease progresses, deep pocket develop between the tooth and the gingiva.
  • the root surface and periodontal pocket becomes contaminated with biofilm, bacterial toxins, and hard adhered calcified calculus deposits.
  • Periodontitis is caused by microorganisms that adhere to and grow on the tooth's surfaces, along with an over-aggressive immune response against these microorganisms.
  • a diagnosis of periodontitis is established by inspecting the soft gum tissues around the teeth with a probe (i.e., a clinical examination) and by evaluating the patient's X-ray films (i.e. a radiographic examination), to determine the amount of bone loss around the teeth.
  • Periodontitis is common but largely preventable. Periodontitis is usually the result of poor oral hygiene. Brushing at least twice a day, flossing daily and getting regular dental checkups can greatly reduce chances of developing periodontitis.
  • Some products only remove biofilm on tooth surface and are not made for injuring / abrasing periodontal pocket wall of gingival side.
  • Some products give excessive abrasive action of tooth surface of pocket wall and remove some tooth structure.
  • Periodontal surgery to remove periodontal pocket wall of gingival side requires excision of pocket wall by giving incision with a knife e.g. Excisional new attachment procedure. Surgical procedures are complex and are to be done by a specialist wherein numerous medicines including anaesthesia and instruments are required.
  • Hand instruments are complex in design and require numerous shaft angles mated with a myriad of shaped scraping edges to allow the operator to clean complex curves of root surfaces and periodontal pocket walls in difficult positions in the mouth have been designed number in the thousands.
  • Ultrasonic instruments utilise electronics to generate a vibrating insert tip to clean the root. Ultrasonic inserts are manufactured in different sizes, designs, and angles to allow placement of the ultrasonic cleaning tip along side of the roots.
  • a dental bur and scaler tip which provides for appropriate and effective abrading action on periodontal pocket wall of gingival side and cleaning or polishing action on periodontal pocket wall of tooth side without destruction or trauma to tooth surface.
  • a device or instrument that does not damage or abrade tooth or root surface.
  • the objective of root planning is to remove root deposits, calculus, granulation tissue and to detoxify the root surface of embedded bacterial toxins and curettage of periodontal pocket wall lining of gingival side.
  • rotary instrument tip or a dental bur or oscillating or a vibrating sonic or ultrasonic tip or a scaler tip designed to enter the periodontal pocket to detoxify the root by cleaning and polishing effect on outer surface of the tooth root without damaging and abrading it and to debride the granulation tissue lining of the periodontal pocket wall of gingival side by abrasive action on it.
  • EP2719356 relates to dental bur but it is specially made for cleaning soft deposit from a tooth or root surface of a tooth in periodontal pocket and implant and not to injure or abrade gingival wall of periodontal pocket . It is specially designed only to remove soft deposit from a tooth or implant so it is not able to remove hard deposit from a tooth e.g. calculus. It causes no abrasion or very less abrasion to gingival wall of periodontal pocket. Furthermore, it is a complicated design and requires special rotating device for its bur. Also, it is relatively costly.
  • US20040191725 relates to dental bur but it causes excessive abrading damage to both gingival and tooth root surface , also to bone structure , specially tooth surface of periodontal pocket . Furthermore, prior art bur / instruments are made to obtain optimum cleaning action of the root canal, so ability for abrasive action to soft tissue is not possible in it.
  • An object of the invention is to provide a medical device or a medical instrument for use in dentistry for reducing / elimination of periodontal pocket depth and the effective prevention and treatment of diseases such as periodontitis.
  • Another object of the invention is to provide a medical device or a medical instrument or a dental instrument, which not only provides abrasive action on gingival wall of periodontal pocket but also clean and polishes tooth surface , specially root surface .
  • an element for a dental instrument configured to provide for abrasive action on gingival wall of periodontal pocket and for cleaning, polishing action on tooth surface without abrading or damaging it, said element comprises:
  • sheath head configured to ensconce an operative distal tip of said dental instrument, characterised in that, said sheath comprising one of a plurality of features on its external surface, said feature configured to provide abrading action on gingival wall of periodontal pocket and cleaning , polishing action on tooth surface without damaging it ;
  • said element is configured to be attached on to a dental bur. Alternatively, said element is configured to be attached on to an endo-file. Alternatively, said element is configured to be attached on to a scaler tip.
  • said attachment comprising at least a head.
  • said sheath head is a rubber sheath head.
  • said sheath head is a latex sheath head.
  • said sheath head is a latex free sheath head.
  • said sheath head is a plastic sheath head.
  • said at least an attachment is a metal attachment.
  • said at least an attachment is a non-metal attachment.
  • said sheath is a conical sheath or long tapered sheath such that it fits atop a bur in an ensconced fashion.
  • said sheath is a conical sheath or long tapered sheath such that it fits atop a scaler tip in an ensconced fashion.
  • said sheath is a conical sheath or long tapered sheath such that it fits atop an endo-file in an ensconced fashion.
  • said sheath is a spiked sheath.
  • said sheath is a spiked sheath, characterised, in that, said spikes decrease or increase in length from an operative upper end of the sheath to an operative lower end of the sheath.
  • said sheath is a spiked sheath, characterised, in that, said spikes comprises a variety of lateral end shapes selected from a group of shapes consisting of round shape, conical shape, tapering shape.
  • said sheath is a spiked sheath, characterised, in that, said spikes comprises a conical tapered tip.
  • said at least an attachment is configured to fit into a rotary instrument or a handpiece at one end.
  • said at least an attachment is configured to fit at one end into an instrument selected from a group of instruments consisting of sonic instruments, ultrasonic instruments, scaler instruments, and vibratory dental instruments.
  • said at least an attachment is configured to fit at one end into a chuck or file holder which is to be fitted on an instrument selected from a group of instruments consisting of sonic instruments, ultrasonic instruments, scaler instruments, and vibratory dental instruments.
  • said sheath is a serrated sheath.
  • said sheath is a serrated sheath characterised, in that, said serrations are rough edges on said sheath's outer surface.
  • said sheath consistency varies from a soft sheath to a hard sheath or combination of both at different layer or part of sheath.
  • said element comprises an opening in said sheath for allowing entry of an attachment to a bur in said sheath head, said opening being provided on the operative bottom side of said head, said opening having a pattern selected from a group of patterns consisting of hemispherical pattern, step pattern, notch pattern, split pattern.
  • said element comprises an opening in said sheath for allowing entry of an attachment to a scaler tip in said sheath head, said opening being provided on the operative bottom side of said head, said opening having a pattern selected from a group of patterns consisting of hemispherical pattern, step pattern, notch pattern, split pattern.
  • said element comprises an opening in said sheath for allowing entry of an attachment to an endo-file in said sheath head, said opening being provided on the operative bottom side of said head, said opening having a pattern selected from a group of patterns consisting of hemispherical pattern, step pattern, notch pattern, split pattern.
  • said sheath is a dotted sheath.
  • said sheath is a ribbed sheath.
  • At least an endpiece is provided at an operative bottom end of said at least an attachment in order to fit said at least an attachment onto a handpiece.
  • said sheath is a spiral sheath.
  • said sheath is a ridged spiral sheath, said ridges being aligned in a pattern selected from a group of patterns consisting of spirally aligned pattern, linearly aligned pattern, and protruding pattern.
  • said sheath is a flare pattern sheath.
  • said sheath is a flare pattern sheath, characterised in that, said flare pattern sheath comprising superimposing extensions to the effect that there are sharp edges which are axially aligned, said sharp edges provide for abrading action.
  • said sheath comprises operatively internally located grooves or notches for efficient retention of the sheath onto an attachment of a bur.
  • said sheath comprises operatively internally located grooves or notches for efficient retention of the sheath onto an attachment of a scaler tip.
  • said sheath comprises operatively internally located grooves or notches for efficient retention of the sheath onto an attachment of an endo-file.
  • said sheath is a disposable sheath.
  • said sheath is a re-usable sheath .
  • said at least an attachment comprises at least a notch which provides for gripping said sheath head when said sheath head is ensconced over a bur.
  • said at least an attachment comprises at least a notch which provides for gripping said sheath head when said sheath head is ensconced over a scaler tip.
  • said at least an attachment comprises at least a notch which provides for gripping said sheath head when said sheath head is ensconced over an endo-file.
  • said at least an attachment comprising a hemispherical end tip for insertion into said sheath head.
  • said at least an attachment comprising split-hemispherical end tip for insertion into said sheath head.
  • said at least an attachment comprises different or coincide shapes on end tip for insertion into said sheath head's operative bottom and forming removable joint with it. In at least one embodiment, said at least an attachment is fixed with sheath head's operative bottom and forming non-removable joint.
  • At least an attachment member connects said at least a head to an instrument handpiece.
  • said sheath head is a conical head with a rough polystrip coating.
  • said head is a conical head with a rough polystrip coating, characterised in that, said polystrip coating being sandpaper type coating.
  • said sheath head is a conical head with a polystrip coating, characterised in that, said polystrip coating having micro-grained surface.
  • said sheath head is a conical or tapered sheath head with sharp tip in its outline shape for easy insertion into narrow periodontal pocket.
  • said sheath head is conical with sharp tip, in its outline for easy insertion between tooth and gingiva in narrow periodontal pocket.
  • said sheath head is long tapered with sharp tip.
  • said sheath head is conical with blunt tip.
  • said sheath head is long tapered with blunt tip.
  • said head is long conical or long tapered in its outline so that it can be easily inserted between tooth and gingiva in periodontal pocket up to bottom of pocket.
  • bur or scaler tip can be produced by a moulding method, especially injection moulding technique. Such method is economical. It is used to prepare bur or scaler tip from thermoplastic material.
  • the bur or scaler tip of the invention is usually made from thermoplastic material .
  • the head, the shank or the attachment and the sheath are of integral construction which means that they are produced in the form of a single workpiece that is also to say usually from one material. That has the advantage that the sheath are joined to the shank or attachment in considerably better manner
  • Prior art has a specially designed small brush in the form of so called micro bristles for cleaning brushes for tooth aperture this is suitable for their respective cleaning purpose but disadvantage is that small brushes do not effectively give abrasion on gingival wall of periodontal pocket and polish tooth side wall of periodontal pocket.
  • the instrument of the current invention uses sheath, especially thick and tough sheath according to specific use.
  • the sheath of the current invention can be of unilateral single plate, bilateral double plate type, triangular three plates, plus pattern or star pattern depending upon single row projection, two rows of projection, three rows of projection, four rows of projection or multiple rows of projection respectively, used in sheath or circular as in case of micro grained surface or any desired shape .
  • the current invention has head, shank or attachment together with the sheath is produced by a milling method especially a micro milling method.
  • Instrument according to the current invention comprises shank or attachment together with the sheath head which is produced by a moulding method especially a micro injection moulding method .
  • Instrument of the current invention is made by a method of producing stated instrument for curettage, abrasion of gingival wall of periodontal pocket and polishing tooth side wall, comprising shank or attachment the external surface of which is provided with sheath head , projection or micro grained surface characterised by the step production of the shank integrally with the sheath.
  • Instrument of the current invention is made by a method of production encompassing milling, especially micro milling of the shank or attachment together with the sheath.
  • Instrument of the current invention is made by method of production encompassing moulding especially micro injection moulding of the shank or attachment together with the sheath.
  • Instrument of the current invention is a one piece integrally formed dental instrument including shank or attachment extending from the sheath head , said shank or attachment , and said sheath head being molded as a unitary, one piece part from resin .
  • Shaft can be made of titanium or high quality steel or fiberglass or of carbon to be incorporated in the sheath.
  • Figures 1 and 2 illustrate various embodiments of this rotary and vibratory instrument respectively
  • Figures 1.2, 1.3, 1.4, and 1.5 illustrate horizontal cross sections of sheath at its lower half;
  • Figure 3 a illustrates a vertical cross section of a spiked sheath;
  • Figure 3b illustrates a horizontal cross section of a spiked sheath, from its operative lower side
  • Figure 3 c illustrates a vertical cross section of a bur
  • Figure 3d illustrates a conical sheath with extensions or spikes protruding from the conical sheath
  • Figure 3e illustrates an embodiment of this spirally aligned sheath
  • Figure 3f illustrates an embodiment of this flare pattern sheath
  • Figure 4 illustrates vertical cross section of sheath head showing internal grooves with attachment
  • Figure 5a illustrates a first embodiment of the attachment for insertion into a sheath or bur of this invention
  • Figure 5b illustrates a second embodiment of the attachment for insertion into a sheath or bur of this invention
  • Figure 5c illustrates an embodiment wherein an attachment head has a hemispherical end tip for insertion into the sheath or bur of this invention
  • Figure 5d illustrates an embodiment wherein a attachment head has a split-hemispherical end tip for insertion into the sheath or bur of this invention
  • Figure 5e illustrates a step for gripping the sheath when the sheath is ensconced over the bur
  • Figure 5f illustrates a vertical cross section depicting the step pattern
  • Figure 5g illustrates a horizontal cross section of a spherical pattern hollow operative base for split type attachment
  • Figure 6a and 6b illustrates the polystrip abrading head
  • Figure 7 illustrates an ultrasonic scaler tip dental instrument with a sheath or rubber abrading head with protrusions as per the embodiment shown in Figures 3a, 3b, 3c, and 3d;
  • Figure 8 illustrates an ultrasonic scaler tip dental instrument with a sheath or polystrip abrading head may have coarse micro-grained surface with protrusions as per the embodiment shown in Figure 6a and 6b;
  • Figure 9 illustrates a unique end design which facilitates ease of insertion into the space between the gingiva and root of a tooth
  • Figure 10 illustrates a file adapter chuck
  • Figure 11 illustrates a spike sheath abrading perio-file
  • Figure 12 illustrates a sandpaper type -abrading / polystrip perio-file
  • Figure 13 illustrates a plate type perio-file
  • Figure 14 illustrates a spiral type perio-file
  • Figure 15 illustrates a unique end design attached to rotary instrument , which facilitate ease of insertion into the space between the gingiva and root of a tooth
  • a dental bur and scaler tip and perio file for abrasive action on gingival wall of periodontal pocket and cleaning, polishing effect on tooth surface without damaging tooth .
  • rotary and vibratory instrument (10, 20) respectively used in the field of dentistry.
  • Figures 1 and 2 illustrate various embodiments of this rotary and vibratory instrument respectively.
  • this instrument in fig 1 has a rotary tip (12) i.e. dental bur which effects cutting by abrasion on the area onto which it is focused.
  • This area may be the tooth surface, root surface, bone structure, hard tissue or soft tissue and the like.
  • Instrument in Figure 2 is a scaler instrument or oscillating or vibrating or sonic or ultrasonic device has a vibrating or oscillating tip which effects on the area onto which it is focused. This may be the tooth surface, root surface, hard tissue or soft tissue and the like.
  • the instrument design comprises at least a hand piece which holds and provides power for the tip or tool at the distal end and further comprises at least a tip or tool at the distal end.
  • the handpiece may be designed in a variety of shapes and sizes; straight, angled, contra-angles, right-angles, ergonomically influenced, and the like.
  • the tip or distal tool is the piece that vibrates or rotates, in order to achieve the action and result as per the dentistry application.
  • the bur is modified in order to provide abrasive action in a variety of manners.
  • the bur is provided with a sheath which ensconces the bur.
  • the sheath is a rubber sheath.
  • the sheath is a latex sheath.
  • the sheath is a latex free sheath.
  • the sheath is a plastic sheath.
  • the sheath is a conical sheath or long tapered sheath such that it fits atop a bur in an ensconced fashion.
  • the bristles Prior art has brush for cleaning root canals of tooth has bristles in order to obtain optimum cleaning action and at the time high stability for the cleaning portion, the bristles overall form a substantially conical outer shape. Such shape ensures that the force is directed from the head portion of the cleaning instrument to the tip of the cleaning portion without substantial twisting of the shank i.e., these bristles of the brush bend without exerting much force to avoid breaking or twisting so it is unable for abrasive action the current invention's instrument or bur or scaler tip has sheath or projection or micro grained surface which is made to exert more pressure and effectively gives abrasion since overall length is short according to our specific use, as compared to prior art instrument twisting of the shank or attachment is not a problem in bur of this invention.
  • Figure 1.2 illustrates a horizontal cross section of sheath [30] at its lower half. It is showing four simultaneous projections or spike [32]. It is showing plus pattern. Projections are moulded with shaft or core or central body or attachment as a single unit by injection molding method with thermoplastic material. Four rows of projections [32] on this bur. This design is economical, exerts more abrading force, high strength, projections are fitted more tightly with shaft or attachment as a single workpiece.
  • Figure 1.3 illustrates a horizontal cross section of sheath [30] at its lower half. It is showing three projections or spike [32]. It is triangular pattern. Projections are moulded with shaft or core or central body or attachment as a single unit by injection molding method with thermoplastic material. Three rows of projections [32] on this bur. This design is economical, exerts more abrading force, high strength , projections are fitted more tightly with shaft or attachment as a single workpiece.
  • Figure 1.4 illustrates a horizontal cross section of sheath [30] at its lower half. It is showing two projections or spike [32]. It is double sided wedge pattern or double sided projection. Projections are moulded with shaft or core or central body or attachment as a single unit by injection molding method with thermoplastic material. Two rows of projections [32] on this bur. This design is economical, exerts more abrading force, high strength, projections are fitted more tightly with shaft or attachment as a single workpiece.
  • Figure 1.5 illustrates a horizontal cross section of sheath [30] at its lower half. It is showing single projections or spike [32]. It is wedge pattern or single projection type. Projections are moulded with shaft or core or central body or attachment as a single unit by injection molding method with thermoplastic material. Single rows of projections [32] on this bur. This design is economical, exerts more abrading force, high strength, projections are fitted more tightly with shaft or attachment as a single workpiece.
  • the sheath is a spiked sheath.
  • Figure 3a illustrates a vertical cross section of the spiked sheath (30).
  • Figure 3b illustrates a horizontal cross section of the spiked sheath (30), from its operative lower side.
  • the spikes (32) are elongate protrusions that extend laterally out of the operative outer surface of the sheath. These spikes provide for abrasive action which is just enough for the abrasive action on gingival wall of periodontal pocket and cleaning , polishing effect on tooth surface without damaging the tooth surface.
  • the spikes may decrease or increase in length, from an operative upper end of the sheath to the operative lower end of the sheath.
  • the spikes may have a variety of lateral end shapes (round, conical, tapering, straight, and the like).
  • Bur tip is mostly conical or long tapered in overall or in its outline shape, so that it can easily enter into a narrow periodontal pocket space and it can touch pockets bottom.
  • Periodontal pockets are of different length, it can be a shallow pocket or a deep pocket; so, bur tip length also varies from short to long size. It is to be understood that the length of the spikes can be of varying or common flexibility and of various lengths and diameters.
  • Reference numeral 25 refers to a metal attachment or non metal attachment or shaft on which the invention is located.
  • the sheath is a serrated sheath.
  • the serrations are rough edges on the operative outer surface of the sheath. These serration provide for abrasive action which is just enough for the abrasive action on gingival wall of periodontal pocket without damaging the tooth surface and giving cleaning, polishing effect on tooth surface.
  • Reference numeral 34 refers to an opening in the sheath which allows for entry of bur or scaler tip or endo file in the sheath. This opening is provided on the operative bottom side of the bur. This opening can be a hemispherical or step pattern or notches or split pattern opening.
  • Figure 5f illustrates a vertical cross section depicting the step pattern.
  • Figure 5g illustrates a horizontal cross section of a spherical pattern hollow operative base for split type attachment.
  • the sheath is a dotted sheath. These dots are protrusions on the operative outer surface of the sheath which provide for abrasive action on gingival wall of periodontal pocket without damaging the tooth surface and giving cleaning, polishing effect on tooth surface.
  • the sheath is a ribbed sheath. These ribs are provided on the operative outer surface of the sheath which provide for abrasive action on gingival wall of periodontal pocket without damaging the tooth surface and giving cleaning, polishing effect on tooth surface.
  • an end piece or a notched stub (27) may be provided at the operative bottom end of the attachment in order to fit the attachment onto a handpiece used in dentistry.
  • Figure 3c illustrates a vertical cross section of a bur. It illustrates a notched head of a attachment in order to grasp the sheath or bur of this invention.
  • Reference numeral 30 refers to the rubber or latex or latex free or plastic abrading sheath head with spikes (32) available for abrasion, according to this invention. The notches in the head portion fit tightly inside the sheath or bur of this invention.
  • Figure 3d illustrates a conical sheath with extensions or spikes (35) protruding from the conical sheath.
  • this conical sheath as well as the extensions is made of rubber or latex sheath or latex free sheath or plastic sheath. These extensions are used for abrasion, according to this invention.
  • the attachment fits into the conical sheath in order to grasp the sheath or rubber or latex or latex free sheath or plastic sheath.
  • the sheath is a spiral sheath (31).
  • Figure 3e illustrates an embodiment of the spiral sheath.
  • This spiral sheath has ridges (31a) in order to aid abrasion. These ridges are spirally aligned or linearly aligned and protrude out of the spiral sheath.
  • the sheath is a flare pattern sheath (33).
  • Figure 3f illustrates an embodiment of this flare pattern sheath.
  • This pattern comprises superimposing extensions to the effect that there are sharp edges which are axially aligned and the sharp edges (33a) provide for abrading action when used in dentistry applications according to this invention. This is, typically, a tapering or long conical design.
  • Figure 4 illustrates another embodiment of the sheath (40) to be used on a bur.
  • operatively internally located grooves or notches may be provided for efficient retention of the sheath on to the bur.
  • the rotary and / or vibratory action of the bur should not dislodge the sheath off the bur.
  • the sheath can be re-usable or it can be disposable depending upon quality of material and method of sterilization.
  • Figure 5a illustrates a first embodiment of the attachment (60) for insertion into a sheath or bur of this invention.
  • Figure 5b illustrates a second embodiment of the attachment (60) for insertion into a sheath or bur of this invention.
  • Reference numeral 62 refers to a metal or nonmetal head.
  • this metal or nonmetal head (62) has notches which provide for gripping the sheath when the sheath is ensconced over the bur or scaler tip. These notches can be seen in Figures 5a, 5b, and 5e of this invention. These notches are precisely detailed so that the fit in the sheath or rubber or latex sheath or latex free sheath or plastic sheath portion of this invention, very tightly.
  • this metal or nonmetal head (62) has a hemispherical end tip (62a) for insertion into the sheath or bur of this invention. This can be seen in Figure 5c of the invention.
  • this metal or nonmetal head (62) has a split-hemispherical end tip (62b) for insertion into the sheath or bur of this invention. This can be seen in Figure 5d of the invention.
  • Reference numeral 64 refers to an attachment member which connects the metal or nonmetal head (62) to a rotary instrument handpiece (10).
  • the protrusions (64), typically, may increase or decrease in length and size from operative top to operative bottom.
  • Figure 5a is a vertical cross section of bur in Figure 6b.
  • the polystrip abrading head may have coarse micro-grained surface (71b).
  • An attachment (25) attached this conical head to a rotary dental instrument (10).
  • the metal or nonmetal attachment (25) can be removably or non-removably fitted (73) to the coarse micro- grained surface (71b).
  • the current invention's instrument sheath or micro grained area has especially been emphasized to give abrasive effect on gingival wall of periodontal pocket and polishing effect on tooth side wall so that the instrument is made stiffer than root canal cleaning brush.
  • This invention has working area made up of sheath, projections or micro grained surface this is totally different than brush pattern or prior art.
  • Figure 7 illustrates an ultrasonic scaler tip dental instrument with a sheath or rubber or latex sheath or latex free sheath or plastic sheath abrading head with protrusions as per the embodiment shown in Figures 3a, 3b, and 3c, 3d of the accompanying drawings.
  • Reference numeral 85 refers to an opening for water spray.
  • Figure 8 illustrates an ultrasonic scaler tip dental instrument with a sheath or polystrip abrading head may have coarse micro-grained surface with protrusions as per the embodiment shown in Figure 6b of the accompanying drawings.
  • Reference numeral 85 refers to an opening for water spray.
  • the bur of this invention or scaler tip or perio file can be of different lengths and / or widths.
  • the bur of this invention or scaler tip or perio file is long conical or long tapered in its outline so that it can be easily inserted between tooth and gingiva in periodontal pocket up to bottom of pocket.
  • the instrument of this invention has a unique end design which facilitates ease of insertion into the space between the gingiva and root of a tooth 95.
  • File adapter chuck can be used to attach gingiva abrading perio file, as mention in the invention to sonic or ultrasonic scaler.
  • Reference numeral 91 refers to a file adapter chuck which can be seen in detail in Figure 10 of the accompanying drawings.
  • Reference numeral 93 refers to periodontal pocket.
  • Reference numeral 97 refers to gingiva.
  • a rotary instrument (10) can be used to attach spike sheath (30) bur, as seen in Figure 15 of the accompanying drawings.
  • FIG 11 illustrates a rubber or latex sheath or latex free sheath or plastic sheath -abrading perio-file (101), according to this invention.
  • a conical body is provided which is coaxial with an elongate element (121) which holds the conical body.
  • This conical body has latex or latex free or plastic or rubber spikes or sheath with spike (125) extending or protruding from it.
  • the spikes' lengths are tapering from operative bottom to operative top of the conical body_or vice versa.
  • This can be fitted onto a file adapter (91) and file adapter is priorly fitted onto a sonic or ultrasonic instrument or a scaler head of a dental instrument (20).
  • Figure 12 illustrates a sandpaper type - abrading / polystrip perio-file (103), according to this invention.
  • a conical body is provided which is coaxial with an elongate element (121) which holds the conical body.
  • This conical body has coarse micro-grained surface enveloping it, which provides for abrasive action as stated in the invention.
  • This can be fitted onto a file adapter (91) and file adapter is priorly fitted onto a sonic or ultrasonic instrument or a scaler head of a dental instrument (20).
  • Figure 14 illustrates a spiral type perio-file (109).
  • this bur or scaler tip or perio file can be used for any dental instrument useful for abrading or polishing action.
  • the dental instruments may comprise an instrument or a handheld tool or a hand piece with a rotary instrument tip, an instrument or a handheld tool or a hand piece with a vibrating tip, or reciprocating tip, an instrument or a handheld tool or a hand piece with an ultrasonic scaler tip, an instrument or a handheld tool or a hand piece with an oscillating tip, or the like.
  • This instrument of handheld tool or hand piece along with the bur or scaler tip or perio file of this invention is used to perform abrasion procedure on periodontal pocket wall of gingival side and cleaning and polishing on tooth surface or a root surface of a tooth.
  • the invented dental bur or a scaler tip or perio file simultaneously removes granulation tissue, proper curettage from the inner lining of the periodontal pocket wall of gingival side or biofilm and calculus from the roots and cleanses and polishes the root surface for speedy healing of periodontal pockets , reducing pocket depth and diseases.
  • the bristles conform to the contour and surface of the root canal for cleaning of root canal. This property makes them less suitable for abrading action on gingival wall of periodontal pocket and polishing action on tooth side wall of periodontal pocket.
  • the currently invented sheath bur or scaler tip has sheath or projection or abrasive area which is suitable for soft tissue abrasion and polishing tooth surface.
  • Prior art brushes had been designed to clean root canal, tooth root canal has length of up to 25 mm - so to access these root canal, prior art brushes had long shaft which facilitates the attachment of a head portion, which either can have a hand grip or is intended for insertion into a device for dental use i.e., brush was connected to head with the help of long shaft.
  • shaft, and head is a long assembly up to 45 mm which gives it accessibility to enter root canal up to its apex and clean for which they are especially made but it makes this design difficult to insert into periodontal pocket.
  • Long length makes prior art instruments more prone to twisting if used in periodontal pocket. In prior art, due to long length, less torque and force reaches to the working area brushes. Periodontal pocket does not require that much long instrument. Operator will find it difficult to use that long instrument into periodontal pocket.
  • the instrument of the current invention is advantageous as it has short shank as compared to root canal cleaning brush and comparatively shorter top to bottom length which makes its design more precise to enter in periodontal pocket.
  • Prior art brushes / instruments are specially made in order to obtain optimum cleaning action - so unable for abrasive and polishing action in contrast to current invention.
  • the prior art had a cleaning portion having a shank the external surface of which is provided with bristles as in the current invention, one has to do soft tissue abrasion so the current invention's instrument is provided sheath, projection or micro grained surface.
  • the wound wires can twist open and bristles can come away and remain behind in the root canal or it can be broken.
  • the current invention' s sheath does not have this disadvantage since it has projections or micro grained surface.
  • the problem underlying the invention is to provide abrading, curettage instrument and a method overcoming the previously mentioned disadvantage and specially allowing the abrasion and curettage of gingival wall of periodontal pocket and polishing tooth side wall reliably .
  • Previous invention has brushes or instrument for cleaning and especially allowing the tooth root canal to be cleaned reliably.
  • prior art has brushes, in which bristles must be in contact with the wall and must conform thereto. Also prior art bristles are therefore made from relatively soft material or are made very fine, with a small diameter. This makes it unable for abrasive action of gingival wall of periodontal pocket and polishing tooth side wall.
  • Prior art is of brush and the current invention's instrument has sheath that includes projections and micro grained surface for our unique and specific use.
  • Prior art cleaning brushes are suitable for cleaning root canals for which they are made but it makes them very week for abrading gingival wall of periodontal pocket and polishing tooth side wall .
  • This invention's instrument can be produced by a milling method especially a micro milling method because milling is a material removing method.
  • the sheath, projection, micro grained surface can be made by this method so that they are able to give curettage, abrasion to gingival wall of periodontal pocket and polishing effect on tooth side wall.
  • These sheath can, moreover, be given any desired shape milling is recommended when relatively rigid or stiff basic material used.
  • sheath head and shank or attachment can be produced by moulding method specially micro injection moulding. Such method is specially economical .
  • Prior art brushes are made from comparatively soft material e.g. polypropylene, polystyrene, or elastomers.
  • comparatively soft material e.g. polypropylene, polystyrene, or elastomers.
  • Comparatively harder material is preferred e.g., delrin as an advantageous result we get abrasive effect rather than smooth cleaning effect.
  • Prior art cleaning instrument caries material out from the tooth root canal especially well when the bristles are distributed over outer surface of the shank in a helical arrangement.
  • the cleaning instrument then moves material in the manner of a drill without, however enlarging the canal.
  • the currently invented instrument if used against tooth, will polish the surface removing irregularities because of its comparatively harder sheath, projections, micro grained surface.
  • Prior art brushes are made specially soft so that they conform to the contour and surface of the root canal; so unable for soft tissue abrasion and tooth polishing.
  • Root canal of a tooth may have length of 25 mm for cleaning.
  • Prior art instruments are made long up to 45 mm in overall head to bottom length also it is made very thin in diameter for insertion into root canal, bristles are made very thin and soft according to their cleaning use.
  • Such long length soft brush is more prone to torsional force and bending force at the shank and brush. So they are difficult to use in periodontal pocket even if inserted into periodontal pocket they are inefficient to perform curettage, abrasion on gingival wall of periodontal pocket and polishing tooth side wall.
  • Long length of previous instrument brushes reduces its torque and force.
  • rigid sheath gives the current invention's instrument more torque and force for curettage, abrasion of gingival wall of periodontal pocket and polishing tooth side wall .
  • Prior art US 5899693A refers to plastic scaler tip made for general scaling of teeth by ultrasonic scaler. Its drawback is that it cannot easily be inserted into periodontal pocket due to its relatively bigger size.
  • Prior art root canal brushes are particularly only thin in diameter at working area according to their use and requirement whereas the currently invented instrument has sheath or projection or micro grained surface which vary in diameter from narrow to wide since periodontal pocket can be narrow to wide.

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  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

L'invention concerne un élément constitué d'une lime et d'une fraise à gaine parodontale pour un instrument dentaire, ledit élément étant conçu pour produire un effet abrasif sur la paroi gingivale de la poche parodontale et pour le nettoyage et le polissage des surfaces dentaires sans les éroder ou les endommager, ledit élément comprenant : au moins une tête à gaine conçue pour installer une pointe distale opératoire dudit instrument dentaire, caractérisée en ce que ladite gaine comprend l'une d'une pluralité de caractéristiques à sa surface externe, ladite caractéristique étant conçue pour produire un effet abrasif sur la paroi gingivale de la poche parodontale, et pour le nettoyage et le polissage des surfaces dentaires sans les éroder ; et au moins une fixation pour maintenir ladite gaine au niveau d'une extrémité.
PCT/IN2016/050242 2015-07-20 2016-07-18 Lime et fraise à gaine parodontale Ceased WO2017013680A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN2741/MUM/2015 2015-07-20
IN2741MU2015 2015-07-20

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WO2017013680A2 true WO2017013680A2 (fr) 2017-01-26
WO2017013680A3 WO2017013680A3 (fr) 2017-04-06

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200138321A (ko) * 2018-04-04 2020-12-09 베넷 에이치. 자코비 임플란트 주위 질환을 치료하기 위한 치주 스케일링, 괴사조직 제거 및 잇몸 조직 절제를 위한 방법 및 장치
US11589953B2 (en) 2018-04-04 2023-02-28 Bennett H. Jacoby Methods and apparatus for periodontal scaling and debridement and gum tissue ablation for treating periodontal and peri-implant disease

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04226646A (ja) * 1990-09-10 1992-08-17 Itzhak Shoher 歯周用装置
CN100515362C (zh) * 2002-10-28 2009-07-22 高桥淳 电动齿间刷装置

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200138321A (ko) * 2018-04-04 2020-12-09 베넷 에이치. 자코비 임플란트 주위 질환을 치료하기 위한 치주 스케일링, 괴사조직 제거 및 잇몸 조직 절제를 위한 방법 및 장치
JP2021517062A (ja) * 2018-04-04 2021-07-15 ジャコビー・ベネット・エイチ 歯周スケーリングおよびデブリードマンのための方法および器具、ならびに歯周疾患およびインプラント周囲疾患を治療するための歯肉組織切除
EP3773315A4 (fr) * 2018-04-04 2021-11-10 Jacoby, Bennett, H. Procédés et appareil de détartrage et de débridement parodontaux et d'ablation de tissu gingival pour le traitement d'une maladie parodontale et péri-implantaire
JP7192087B2 (ja) 2018-04-04 2022-12-19 ジャコビー・ベネット・エイチ 歯周スケーリングおよびデブリードマンのための方法および器具、ならびに歯周疾患およびインプラント周囲疾患を治療するための歯肉組織切除
US11540899B2 (en) 2018-04-04 2023-01-03 Bennett H. Jacoby Methods and apparatus for periodontal scaling and debridement and gum tissue ablation for treating periodontal and peri-implant disease
JP2023002778A (ja) * 2018-04-04 2023-01-10 ジャコビー・ベネット・エイチ 歯周スケーリングおよびデブリードマンのための方法および器具、ならびに歯周疾患およびインプラント周囲疾患を治療するための歯肉組織切除
US11589953B2 (en) 2018-04-04 2023-02-28 Bennett H. Jacoby Methods and apparatus for periodontal scaling and debridement and gum tissue ablation for treating periodontal and peri-implant disease
KR102518888B1 (ko) * 2018-04-04 2023-04-06 베넷 에이치. 자코비 임플란트 주위 질환을 치료하기 위한 치주 스케일링, 괴사조직 제거 및 잇몸 조직 절제를 위한 방법 및 장치

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