US20060141420A1 - Notched pontic and system for fabricating dental appliance for use therewith - Google Patents

Notched pontic and system for fabricating dental appliance for use therewith Download PDF

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Publication number
US20060141420A1
US20060141420A1 US11/226,763 US22676305A US2006141420A1 US 20060141420 A1 US20060141420 A1 US 20060141420A1 US 22676305 A US22676305 A US 22676305A US 2006141420 A1 US2006141420 A1 US 2006141420A1
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US
United States
Prior art keywords
pontic
dental
cast
notch
appliance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/226,763
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English (en)
Inventor
Dann Schwartz
John Sheridan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dentsply Research and Development Corp
Original Assignee
Dentsply Research and Development Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dentsply Research and Development Corp filed Critical Dentsply Research and Development Corp
Priority to US11/226,763 priority Critical patent/US20060141420A1/en
Publication of US20060141420A1 publication Critical patent/US20060141420A1/en
Priority to US12/386,682 priority patent/US8070485B2/en
Priority to US13/279,428 priority patent/US20120040303A1/en
Abandoned 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
    • A61C13/00—Dental prostheses; Making same
    • A61C13/0001—In-situ dentures; Trial or temporary dentures
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/10—Fastening of artificial teeth to denture palates or the like
    • A61C13/1003—Fastening of artificial teeth to denture palates or the like by embedding in base material
    • A61C13/1006—Fastening of artificial teeth to denture palates or the like by embedding in base material characterised by a tooth shape which improves retention
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
    • A61C7/08—Mouthpiece-type retainers or positioners, e.g. for both the lower and upper arch

Definitions

  • the present invention is a temporary bridge as used with a dental appliance such as a retainer. More particularly, the invention relates to a pontic having a prefabricated channel or slot, such as a lingual channel therein, helping to ensure a secure mechanical lock with the dental appliance. The invention also pertains to a method of fabricating a dental appliance and a kit for facilitating the same. The invention has particular application to removable appliances.
  • a suitable plastic tray can be used in an orthodontic procedure to move teeth, and can also be used in a post-procedure to retain the teeth in the desired position.
  • trays are known and are formed from plastic materials such as Essix C+ or ACE, each available from Raintree Essix of Metairie, La.
  • trays are often thermoformed over a model of the patient's dentition. If the patient is missing a tooth, then the void in the resulting dental model will cause problems with the subsequent thermoforming operation. Further, because dental appliances such as tooth movement trays and retainers are used with ongoing dental procedures, the patient often cannot benefit from the well established dental procedures for restoring such deficiencies. That is, until the treatment is over, the patient often cannot get a new bridge, crown or other restorative. During the treatment period then, the patient must tolerate the dental deficiency.
  • One solution to helping alleviate the patient's problem has been to provide temporary bridges and the like using appliances known as flippers.
  • a flipper is a temporary artificial tooth that is attached with either a wire or a plastic piece that fits in the roof of the mouth. This is uncomfortable at best although it may be aesthetically acceptable.
  • thermoformed dental appliance constructed by making an impression of a patient's dentition, constructing a dental impression cast from said impression, providing a pontic having a notch pre-formed therein and fitting same to the edentulous area of the cast, temporarily adhering the pontic to the cast, thermoforming a plastic sheet over the cast to form the appliance, while allowing the pontic to dislodge from the cast and mechanically lock into the appliance.
  • the pontic may be selected from a plurality of pontics having different color, hue and or brightness characteristics or combinations thereof.
  • the plurality of pontics may also have different sizes and shapes.
  • the pontic may be selected from a plurality of pontics having different color, hue and or brightness characteristics or combinations thereof.
  • the plurality of pontics may also have different sizes and shapes.
  • Another method according to the invention for manufacturing a pontic comprises the steps of:
  • a method of building a dental bridge incorporating a pontic comprises the steps of:
  • kits for fabricating a dental appliance having at least one pontic affixed thereto comprising a plurality of pontics of various size, shape, color, hue, brightness or combinations thereof; each said pontic of said plurality having a notch in one or more locations thereon.
  • FIG. 1 is a front perspective view of a model of a patient's upper dental arch and having a missing tooth thereon.
  • FIG. 2 is a front perspective view of a model as in FIG. 1 showing a temporary pontic according to the invention affixed to the model in the area of the patient's missing tooth.
  • FIG. 3 shows a rear perspective view of the model of FIG. 2 , showing the pontic being affixed to the model.
  • FIG. 4 shows the pontic of FIGS. 2 and 3 embedded and mechanically locked into a plastic tray retainer.
  • FIG. 5 is a perspective view of an exemplary pontic according to the invention.
  • FIG. 6 is a perspective view of another exemplary pontic according to the invention.
  • the present invention relates to dental appliances such as temporary anterior bridges or the like, and particularly a dental appliance utilizing a modular, customizable assembly including one or more pontics, each having the mounting notch pre-formed therein during manufacture.
  • notch means any channel, cut, scrape, gouge, etch, trench, void or other indentation, whether of regular or irregular shape and size, without limitation.
  • the pontic according to the invention may have one of more such notches placed at one or more locations thereon.
  • the pontic as shown in FIG. 5 is provided with a notch in the form of a lingual channel. Because other notch shapes, locations and numbers thereof on a given pontic may vary, all such variations have not been shown on the drawings and the notch as shown is considered to be representative of all such notches.
  • the preferred embodiment of the present invention thereby provides a temporary anterior bridge which requires less time and effort to fabricate, and is more economical in implementation. While the invention has application to any dental appliance, it is particularly suited for use with removable appliances thermoformed from plastic sheet materials.
  • the notch 11 as described herein serves to physically engage the appliance during for example, the thermoforming of the appliance, and helps to secure the pontic to the appliance thereby formed.
  • an off-the-shelf pontic, or artificial tooth is employed to form a fixed partial denture or thermoplastic slip over appliance to replace the lost natural tooth, restore its function, and to occupy the space previously occupied by the natural crown.
  • the pontic had to be prepared by notching same to facilitate securing it to the appliance, which requires additional steps which had to be performed by the dental caregiver.
  • the present invention provides a ready-made pontic 10 which incorporates a notch 11 ( FIGS. 5 and 6 ) formed therein during manufacture, so as to dispense with the necessity of manually forming the required notches during preparation of the bridge for the patient.
  • FIG. 5 shows a representation of an anterior pontic 10 a while FIG. 6 is an example of a posterior pontic 10 b .
  • the term pontic refers to any portion of a bridge or other dental restoration that takes the place of a missing natural tooth or portion thereof.
  • a selection of pontics 10 , 10 a and 10 b is thereby formed of various sizes and colors, hues, brightness or combinations thereof, already having a notch 11 or trench formed in the outer surface of the pontic.
  • the notch may preferably be formed on the lingual surface, as will be shown on the present drawings.
  • each pontic is formed by injection molding or the like, which molds may include means to form the notch or ridge to facilitate securing the pontic to the appliance.
  • a variety of sized, shaped, and colored pontics are provided for use by the dental care provider in his/her practice to best match the missing tooth or teeth of the patient.
  • the attached figures illustrate utilizing the pontic 10 with a pre-formed notch 11 ( FIG. 3 ) on the lingual surface of said pontic, for fabricating a slip-on thermoplastic appliance.
  • a separating medium is applied to the edentulous alveolar ridge area 21 of a dental cast 20 using any conventional means such as swab 22 .
  • a suitable pontic 10 is chosen by the dental care provider to provide the appropriate size and color, hue and/or brightness, and is fitted into the edentulous area 21 of the cast 20 .
  • the base of the pontic 10 may have to be trimmed to approximate the ridge and provide a secure fitting.
  • FIG. 3 illustrates a lingual view of the pontic fitted to the edentulous area 21 of the cast 20 , with the pre-formed notch 11 .
  • the pontic 10 is then secured to the cast with quick-cured acrylic or any other conventional thermally compatible adhesive (not shown) for subsequent thermoforming, using any conventional means such as with swab 22 .
  • quick-cured acrylic or any other conventional thermally compatible adhesive (not shown) for subsequent thermoforming, using any conventional means such as with swab 22 .
  • pink acrylic may be used in the gingival area.
  • a plastic sheet such as Essix C+, Essix A+ for children, or the like may be thermoformed over the cast utilizing an Essix brand vacuum thermoformer or the like over the thus prepared cast 20 , resulting in the formation of dental tray appliance 30 .
  • the pontic 10 should dislodge from the cast 20 and mechanically lock into the appliance 30 as is depicted in FIG. 4 .
  • the appliance 30 may then be conventionally trimmed for a secure and comfortable fit.
  • the invention also provides a kit for fabricating the dental appliance.
  • the kit includes a plurality of pontics as above of various size, shape, color, hue, brightness or combinations thereof as discussed hereinabove.
  • Each pontic of the inventive plurality has a notch in one or more locations thereon, as also described hereinabove.
  • the inventive kit may also include a dental compound for temporarily affixing at least one of the pontics to the dental model.
  • a dental compound for temporarily affixing at least one of the pontics to the dental model.
  • An example of such an affixing compound is a blockout compound such as Triad Gel available from DENTSPLY International of York, Pa.
  • the material used to affix the pontic to the model should not be a permanent adhesive, but may be a reversible adhesive.
  • the material preferably is able to withstand melting at the subsequent thermoforming temperature, has suitable strength to hold the pontic in place during such procedures but is easily removable such that once the tray is removed from the model the bond between the compound and the pontic is readily and easily broken.
  • the kit may include for example, at least one pontic having a notch that is a lingual channel or any such shape, location or number of notches.
  • the kit also preferably includes pontics in the shapes of upper and lower anterior and posterior teeth or combinations thereof.

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (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)
US11/226,763 2004-09-14 2005-09-14 Notched pontic and system for fabricating dental appliance for use therewith Abandoned US20060141420A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US11/226,763 US20060141420A1 (en) 2004-09-14 2005-09-14 Notched pontic and system for fabricating dental appliance for use therewith
US12/386,682 US8070485B2 (en) 2004-09-14 2009-04-22 Notched pontic and system for fabricating dental appliance for use therewith
US13/279,428 US20120040303A1 (en) 2004-09-14 2011-10-24 Notched pontic and system for fabricating dental appliance foruse therewith

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US60966004P 2004-09-14 2004-09-14
US11/226,763 US20060141420A1 (en) 2004-09-14 2005-09-14 Notched pontic and system for fabricating dental appliance for use therewith

Related Child Applications (1)

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US12/386,682 Continuation US8070485B2 (en) 2004-09-14 2009-04-22 Notched pontic and system for fabricating dental appliance for use therewith

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US20060141420A1 true US20060141420A1 (en) 2006-06-29

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US11/226,763 Abandoned US20060141420A1 (en) 2004-09-14 2005-09-14 Notched pontic and system for fabricating dental appliance for use therewith
US12/386,682 Active US8070485B2 (en) 2004-09-14 2009-04-22 Notched pontic and system for fabricating dental appliance for use therewith
US13/279,428 Abandoned US20120040303A1 (en) 2004-09-14 2011-10-24 Notched pontic and system for fabricating dental appliance foruse therewith

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US12/386,682 Active US8070485B2 (en) 2004-09-14 2009-04-22 Notched pontic and system for fabricating dental appliance for use therewith
US13/279,428 Abandoned US20120040303A1 (en) 2004-09-14 2011-10-24 Notched pontic and system for fabricating dental appliance foruse therewith

Country Status (4)

Country Link
US (3) US20060141420A1 (fr)
EP (1) EP1809199B1 (fr)
CA (2) CA2580481C (fr)
WO (1) WO2006031906A2 (fr)

Cited By (1)

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US20100151419A1 (en) * 2008-12-16 2010-06-17 Yusei Kadobayashi Artificial teeth

Families Citing this family (7)

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Publication number Priority date Publication date Assignee Title
EP1809199B1 (fr) 2004-09-14 2013-05-15 DENTSPLY International Inc. Methode de fabrication d'un appareil dentaire
FR2959929B1 (fr) 2010-05-17 2012-07-20 H 32 Gabarit individualise pour appareillage orthodontique, ensemble forme par ce gabarit, une base et une attache, et ses procedes de conception.
US20120202171A1 (en) * 2011-02-07 2012-08-09 D Anjou Lissa T Dental appliance
US8777611B2 (en) * 2011-12-20 2014-07-15 Michele Cios Enhancement to dental alignment device
WO2016144970A1 (fr) 2015-03-09 2016-09-15 Chu Stephen J Pontique ovoïde gingival et ses procédés d'utilisation
US20210038346A1 (en) * 2018-02-05 2021-02-11 Dean UltraThin Retainer, LLC Metal orthodontic retainer or dental flipper
US20190298499A1 (en) * 2018-03-27 2019-10-03 Kimberly Fregoso Thermoplastic film kit

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US8690573B2 (en) 2008-12-16 2014-04-08 Kabushiki Kaisha Shofu Method of arranging artificial teeth

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US20120040303A1 (en) 2012-02-16
US20090208908A1 (en) 2009-08-20
US8070485B2 (en) 2011-12-06
CA2580481C (fr) 2014-04-08
CA2839708C (fr) 2017-11-28
WO2006031906A3 (fr) 2006-06-22
EP1809199A2 (fr) 2007-07-25
CA2839708A1 (fr) 2006-03-23
EP1809199B1 (fr) 2013-05-15
CA2580481A1 (fr) 2006-03-23

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