CN109350271B

CN109350271B - Inverted cone drill for dental restoration

Info

Publication number: CN109350271B
Application number: CN201811423565.5A
Authority: CN
Inventors: 尹文婷; 夏天永
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-11-27
Filing date: 2018-11-27
Publication date: 2023-05-23
Anticipated expiration: 2038-11-27
Also published as: CN109350271A

Abstract

The invention discloses a back taper drill for tooth restoration, which comprises a telescopic cylinder, wherein the upper end of the telescopic cylinder is in threaded connection with a cylinder cover, a telescopic rod is sleeved in the telescopic cylinder, a positioning disc is arranged at the upper end of the telescopic rod, a spring is sleeved on the outer surface of the telescopic rod and positioned on the lower surface of the positioning disc, a clamping groove is arranged on the right side of the outer surface of the telescopic cylinder, a clamping block is movably clamped in the clamping groove, one end of the clamping block is fixedly connected with the positioning disc, the bottom end of the telescopic rod is in threaded connection with an installation seat, a short rod is sleeved in the installation seat, a drill bit is arranged at the lower end of the short rod, and a cutting edge is arranged on the outer surface of the drill bit. This be used for prosthetic back taper of tooth to bore, novel in design, convenient to detach can extend or retract telescopic link, and the length of being convenient for is convenient for change, facilitates the use, installs the drill bit fast, is convenient for change after the drill bit damages moreover, can continue to use other parts, saves the resource, avoids unnecessary extravagant, and the practicality is strong.

Description

Inverted cone drill for dental restoration

Technical Field

The invention relates to the technical field of dental appliances, in particular to an inverted cone drill for dental restoration.

Background

The back taper drill used in clinic at present is used for preparing back-concave retention shape (the geometrical shape for ensuring retention force obtained by the prosthesis is called retention shape, wherein certain geometrical shapes such as surface, hole, groove and the like are formed on the tooth body). The retention shape is a specific shape which enables the filling material to remain in the hole and not shift or fall off after bearing the resultant force of teeth. The concave area is formed from the bottom of the flat hole to the side wall in the angular area of the shaft pith line when the hole is inverted, so that the bottom of the hole is provided with a protruding part, the filler can be retained by obtaining the shape that the bottom of the hole is slightly larger than the opening part, and the inverted retention can prevent the filler from falling out from the direction perpendicular to the bottom of the hole. The existing back taper drill for tooth restoration is of an integral structure, the drill bit can only be integrally discarded after being damaged or worn, resource waste is easy to cause, the length is fixed by adopting the integral structure, and the back taper drill is inconvenient to use.

Disclosure of Invention

The invention aims to overcome the existing defects, and provides the back taper drill for dental restoration, which is novel in design, convenient to detach, capable of changing the length, convenient to use, convenient to install a drill bit quickly, convenient to replace after the drill bit is damaged, capable of continuously using other parts, saving resources, avoiding unnecessary waste, high in practicability and capable of effectively solving the problems in the background art.

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a back taper is bored for tooth restoration, includes flexible section of thick bamboo, the upper end threaded connection of flexible section of thick bamboo has the cover, the telescopic link has been cup jointed to the inside of flexible section of thick bamboo, and the upper end of telescopic link is equipped with the positioning disk, and the surface of telescopic link has cup jointed the spring, and the spring is located the lower surface of positioning disk, the surface right side of flexible section of thick bamboo is equipped with the draw-in groove, and the fixture block is equipped with to the activity card in the draw-in groove, the one end and the positioning disk fixed connection of fixture block, the bottom threaded connection of telescopic link has the mount pad, and the inside of mount pad has cup jointed the quarter butt, and the lower extreme of quarter butt is equipped with the drill bit, and the surface of drill bit is equipped with the blade.

As a preferable technical scheme of the invention, a connecting block is arranged in the middle of the upper surface of the cylinder cover, and the connecting block is columnar.

As a preferable technical scheme of the invention, the clamping groove comprises a vertical through groove, wherein transverse grooves are uniformly distributed on one side of the vertical through groove, and the transverse grooves are communicated with the vertical through groove.

As a preferable technical scheme of the invention, a first magnet is arranged in the mounting seat, and a second magnet attracted with the first magnet is arranged at the upper end of the short rod.

As a preferable technical scheme of the invention, the number of the cutting edges is not less than six, and the cutting edges with the number not less than six are uniformly distributed around the drill bit.

Compared with the prior art, the invention has the beneficial effects that: this be used for prosthetic back taper of tooth bores, novel in design, convenient to detach, through setting up draw-in groove and fixture block, the fixture block can the cartridge in a certain transverse groove in the draw-in groove, and then can extend or retract the telescopic link, change length, facilitate the use, the quarter butt is fixed in the mount pad through first magnet and second magnet, the drill bit is installed fast to the convenience, be convenient for change after the drill bit damages moreover, can continue to use other parts, save the resource, avoid unnecessary extravagant, the practicality is strong.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

fig. 2 is a schematic diagram of the internal structure of the present invention.

In the figure: 1 connecting block, 2 cylinder cover, 3 telescopic cylinder, 4 telescopic link, 5 mount pad, 6 quarter butt, 7 drill bit, 8 blade, 9 horizontal recess, 10 vertical logical groove, 11 fixture block, 12 positioning disk, 13 springs, 14 first magnet, 15 second magnet, 16 draw-in grooves.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides a reverse taper drill for tooth restoration, including flexible section of thick bamboo 3, the upper end threaded connection of flexible section of thick bamboo 3 has cover 2, the upper surface middle part of cover 2 is equipped with connecting block 1, connecting block 1 is the column, be used for being connected with external equipment, flexible pole 4 has been cup jointed in the inside of flexible section of thick bamboo 3, the upper end of flexible pole 4 is equipped with positioning disk 12, spring 13 has been cup jointed to the surface of flexible pole 4, spring 13 is located the lower surface of positioning disk 12, flexible pole 4 resets of being convenient for, the surface right side of flexible section of thick bamboo 3 is equipped with draw-in groove 16, draw-in groove 16 includes vertical logical groove 10, one side evenly distributed of vertical logical groove 10 has horizontal recess 9, horizontal recess 9 communicates with vertical logical groove 10, the activity card is equipped with fixture block 11 in the draw-in groove 16, the one end and positioning disk 12 fixed connection of fixture block 11, through with the inside a certain horizontal recess 9 of 11 cartridge in the draw-in groove 16, can be extended or retract flexible pole 4, change length, facilitate the use, the bottom threaded connection of flexible pole 4 has mount pad 5, the inside of mount pad 5 has cup jointed the quarter butt 6, the inside of mount pad 5 is equipped with first magnet 6, the inside of mount pad 5 is equipped with the first magnet 6, the inside of being equipped with the quarter butt 6, be equipped with the magnet 6, the magnet is equipped with the magnet 6 is less than the 8, the number of the end is not more than 7 is less than the 8, the bit is not more than the 8 is difficult to be more than the 8, the necessary and is less than the bit is difficult to be more than the bit is 8, the number is 8, and is 8, the number is 8, the end is 8, and is 8, the is the and is 8.

When in use: during installation, the short rod 6 is inserted into the installation seat 5, the first magnet 14 and the second magnet 15 are attracted, the short rod 16 is fixed in the installation seat 5, the length of the telescopic rod 4 is adjusted, the clamping block 11 is arranged in the vertical through groove 10, then the clamping block moves up and down, the clamping block 11 is arranged in the transverse groove 9 after being adjusted to a proper length, and if the drill bit 7 is damaged or worn during use, the clamping block is directly taken down and replaced.

The invention has novel design and convenient disassembly, the clamping block 11 can be clamped in one transverse groove 9 in the clamping groove 16, further the telescopic rod 4 can be extended or retracted, the length is changed, the use is convenient, the short rod 6 is fixed in the mounting seat 5 through the first magnet 14 and the second magnet 15, the drill bit 7 is convenient and rapid to install, the drill bit 7 is convenient to replace after being damaged, other components can be continuously used, resources are saved, unnecessary waste is avoided, and the practicability is strong.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a back taper drill for dental restoration, includes flexible section of thick bamboo (3), its characterized in that: the telescopic device is characterized in that a cylinder cover (2) is connected to the upper end of the telescopic cylinder (3) in a threaded manner, a telescopic rod (4) is sleeved in the telescopic cylinder (3), a positioning disc (12) is arranged at the upper end of the telescopic rod (4), a spring (13) is sleeved on the outer surface of the telescopic rod (4), the spring (13) is located on the lower surface of the positioning disc (12), a clamping groove (16) is formed in the right side of the outer surface of the telescopic cylinder (3), a clamping block (11) is movably clamped in the clamping groove (16), one end of the clamping block (11) is fixedly connected with the positioning disc (12), a mounting seat (5) is connected to the bottom end of the telescopic rod (4) in a threaded manner, a short rod (6) is sleeved in the mounting seat (5), a drill bit (7) is arranged at the lower end of the short rod (6), and a cutting edge (8) is arranged on the outer surface of the drill bit (7); the clamping groove (16) comprises a vertical through groove (10), wherein transverse grooves (9) are uniformly distributed on one side of the vertical through groove (10), and the transverse grooves (9) are communicated with the vertical through groove (10); a first magnet (14) is arranged in the mounting seat (5), and a second magnet (15) attracted with the first magnet (14) is arranged at the upper end of the short rod (6); the number of the cutting edges (8) is not less than six, and the cutting edges (8) with the number not less than six are uniformly distributed around the drill bit (7).

2. An inverted cone drill for dental restoration according to claim 1, wherein: the middle part of the upper surface of the cylinder cover (2) is provided with a connecting block (1), and the connecting block (1) is columnar.