JPS6148355A - Flexible model pin in dental technique - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Object of the present invention (industrial field of application) The present invention relates to a removable model pin used in a dental abutment model.

(Conventional Known Technique) As a conventional known technique, it is customary to use a single dowel pin, but it is extremely difficult to implant several pins in parallel, and it takes a lot of time to become proficient. It is necessary. For this reason, mechanical equipment for planting is required, and although there are developments related to these, all of them have their advantages and disadvantages. Conventional dowel pins have a serious drawback that it is not easy to plant them in parallel when several pins are being planted (for example, when making a long Bragg), and the support hole that supports the lower end of the pin is small and long. If the tooth is clogged with dirt, wax, etc. and cannot be removed completely, the abutment tooth will float and cause deformation. Furthermore, since the support hole for the pin is small, it is not easy to return the abutment tooth to its original position, and since it is a single cylindrical shape, it is prone to swaying and rotating.

As an improved version of the conventional dowel pin, it was developed in 1970.
There is No. 43113, but the pin shown in the same device has a long thin needle attached to the tip of the main body in an upright manner, and the tip of the needle is inserted into the opening edge of the container, and the lower end is implanted in the denture body. However, when several pins are planted at once, there are differences in height, and the vibrations of the vibrator cause them to swing and make it difficult to plant them in parallel. It is difficult to remove the needle and has drawbacks such as the needle falling off.

(Problems to be Solved by the Present Invention) In order to eliminate the above-mentioned drawbacks, the present invention forms the main body of the pin, which is made of a belt-like plate of synthetic resin (e.g., epoxy resin) and has longitudinal ridges arranged in a comb-teeth shape. This is what we are trying to solve.

(b) Structure of the present invention (means for solving the problem) Grooves 2 and 2' having a U-shaped cross section are provided oppositely in the horizontal direction on both the front and back sides of the upper base 1 of the curved synthetic resin strip plate, and the lower part of the base A large number of comb-like protrusions 3 are formed in the longitudinal direction from the side portions into grooves 4 having an arcuate cross section.
A pin body 5 is formed by arranging the pin bodies 5 in parallel through the ridges, and grooves 6 having an arcuate cross section are formed in the lower part of the back surface of each of the protrusions to form the required model pins. The pin body 5 has both front and back surfaces sloped at appropriate angles to facilitate insertion and removal.

(Action of the present invention) When using the present invention as a pin for a model, the tooth mold abutment 7
A groove 8 for embedding the base 1 is made in the groove, the base is inserted into the groove, and secondary gypsum is poured in. The base becomes a maintenance part for the pin body 5, and the pin is planted in parallel. At this time, the grooves 2 and 2" provided at the base are filled with secondary gypsum, allowing for stable planting.Moreover, the planting can be done with simple operations without requiring special skill. Dental clinics other than dental laboratories In the case of a clinic, the product of the present invention can be planted in parallel by simply placing it on soft plaster before hardening, and since it is made of synthetic resin, it will not be buried.

In addition, when the pin is cut into parts and removed from the lower support (not shown) as described above, the pin support hole is wide, so even if it becomes clogged, it can be removed completely with heat, so it does not cause deformation, and the cut surface is As shown in Figure 3, since the width is the same as the abutment, the contact surface with the plaster wall is thick, so it is very stable without rolling or rotating. The arcuate grooves 4 on the front and the arcuate grooves 6 on the back, which are different in height, prevent rotation and strengthen the holding force.

(Embodiment of the present invention) An embodiment of the present invention will be described with reference to the drawings. A curved band-shaped plate is molded from a synthetic resin such as epoxy resin, and grooves 2 having a U-shaped cross section are formed on both the front and back sides of the upper base 1 of the chain plate. 2' are arranged opposite each other in the horizontal direction, and a large number of comb-like protrusions 3 are arranged in parallel in the longitudinal direction from the lower side of the base via grooves 4 having an arc-shaped cross section.
A groove 6 having an arcuate cross section is formed on the lower side of the convex rear surface, and both the front and back surfaces of the pin body are sloped at an appropriate angle.

(C) Effects As shown in the above configuration, the present invention has the advantage that unlike the conventional single pin, it can be easily planted parallel to the tooth mold abutment, making technical work very efficient. . Furthermore, since the pin has a certain width when it is cut into pieces, the pin will not rotate or sway, so it will not be deformed. Since it is a horizontally long pin body, it can be cut as appropriate for short models, making it convenient and inexpensive. Since it is made of synthetic resin, the product can be provided at low cost, and of course can be heated to match the curvature of the jaw.

If the base is colored, it will indicate the planting position, and if the entire surface of the pin is nickel plated, it will prevent water absorption.

[Brief explanation of drawings]

Examples of the present invention, FIG. 1 is an enlarged sectional view of the product of the present invention;
Fig. 2 is a front view of a tooth mold abutment on which the product of the present invention is attached, Fig. 3 is a partially cutaway front view when the product is cut into parts, and Fig. 4 is a perspective view of the product of the present invention. 1... Base 4, 6... Arc-shaped groove 2.2'... U-shaped groove 5...
・Pin body 3・・・Protrusion $2 figure

Claims (1)

[Claims] Grooves with a U-shaped cross section are provided in the horizontal direction on both the front and back surfaces of the upper base of a band-shaped curved plate molded from synthetic resin, and a large number of comb-shaped protrusions are formed in the longitudinal direction from the lower side of the base with an arcuate cross section. Forming pin bodies arranged in parallel through grooves, grooves each having an arcuate cross section in the longitudinal direction are provided on the lower back side of the protruding strip, and both the front and back surfaces of the pin bodies are sloped surfaces at an appropriate angle. Pins for removable models in dental technology, featuring: