SU1718890A1 - Dental drill - Google Patents

Description

Fm.1

The invention relates to medicine, namely to dentistry, and is intended for the treatment of hard dental tissues.

The aim of the invention is to reduce the time for preparation of the side walls of the tooth cavity.

FIG. 1 shows the device, a general view; in fig. 2 and 3 options for the device.

Boron contains a shank 1, a working head 2, an end 3, an average 4 and a folding 3, respectively.

Boron is used as follows.

Initially, all the conventional stages of preparation of the carious cavity (opening, expansion, necrotomy, formation) are carried out. In this case, the side walls are attached parallelism in a conventional manner. Then, the shank 1 of the proposed boron is inserted into the tip, the electric drive of the drill is turned on. Drive the rotating bore to the cavity. The end portion of boron 3 is placed along its side wall and gently pushed deep into the cavity, while the cone-shaped parts of boron (medium 4 and folded 5) are cut by hard fabrics

tooth dentin 6 and enamel configurations that will ensure optimal removal of them. This is ensured by the angles between the end 3 and middle 4 step of 165-185 ° and between the middle 4 and folded 5 - 140-160 °. And so on around the perimeter of the cavity,

For the completeness and quality of processing, visual control is carried out throughout the manipulation. The prepaired cavity 7 of the tooth, subjected to such treatment, is then restored by a seal or insert.

Claims (1)

DETAILED DESCRIPTION OF THE INVENTION A dental bur containing a shank, a working head with a shaped cutting surface and an end portion of a smooth cylindrical shape, characterized in that, in order to shorten the time for preparation of the side walls of a tooth cavity, the working head of a boron and the folded parts have a conical shape, with the angle between the end and middle steps being 165-175 °, and between the middle and folded, 140-160 °. 6 FIG. 2 7 Fm.b