RU211176U1 - Osteotome for dentoalveolar reconstruction - Google Patents

Abstract

The utility model relates to surgical instruments and can be used in dental implantology. Osteotome for dentoalveolar reconstruction contains a handle with a butt and corrugations on the outer surface. The straight guide connects the pointed working part to the handle. The working part is made with an outer surface in the form of a cylindrical segment and has an inner surface in the form of a cone segment. The generatrix of the cone segment is oriented to the longitudinal axis of the guide at an angle of 21 degrees. 20 minutes. The outer surface of the working part is oriented to the longitudinal axis of the guide at an angle of 7 degrees. 45 min. and is made with an external subpoint. The point is oriented to the outer surface of the working part at an angle of 20 degrees. The thickness of the wall of the working part at the end of the sharpening opposite to the sharpening does not exceed 0.2 mm. The technical result is to reduce the invasiveness of bone mass sampling, which is necessary for one-stage implantation during dentoalveolar reconstruction.

Description

The utility model relates to surgical instruments and can be used in dental implantology.

A grooved curved chisel for bone processing is known, containing a handle with a butt and a pointed working part oriented at an angle to the guide connecting the working part with the handle, which are offset relative to each other and located in different planes (RU 175313 U1, 11/29/2017).

The disadvantage of the known tool is the relative position of the handle and the working part, which does not allow atraumatic sampling of the bone autograft from the tubercle of the upper jaw.

A tool closer to the proposed utility model, chosen by its prototype, is an osteotome containing a handle with a butt and a pointed working part oriented at an angle to a straight guide connecting the working part to the handle (US 4600005 A, 07/15/1986).

The disadvantages of the design of the known osteotome is the possibility of perforation of the mucosa of the bottom of the maxillary sinus due to the small area of the anterior part of its working body. With careless advancement, such an instrument can completely remove the tubercle of the upper jaw.

The task to be solved by the proposed utility model is the creation of a surgical instrument for dentoalveolar reconstruction, which allows obtaining a sufficient volume of bone tissue for reliable fixation of implants by increasing the sampling of bone mass of atrophied areas of the upper jaw and subsequent fixation of the obtained bone autograft into the sockets of the extracted tooth, providing one-stage implantation.

The technical result of the utility model is to reduce the invasiveness of bone mass harvesting, which is necessary for one-stage implantation during dentoalveolar reconstruction.

The essence of the utility model is expressed in a set of essential features, in which the osteotome for dentoalveolar reconstruction, containing a handle with a butt and a pointed working part oriented at an angle to the direct guide connecting the working part to the handle, differs from the closest analogue in that the working part is made from the outside surface in the form of a cylindrical segment and has an inner surface in the form of a cone segment, the generatrix of which is oriented to the longitudinal axis of the guide at an angle of 21 degrees. 20 min., while the outer surface of the handle is made with corrugations, and the outer surface of the working part is oriented to the longitudinal axis of the guide at an angle of 7 degrees. 45 min. and is made with an external undercut oriented to the outer surface of the working part at an angle of 20 degrees, and the wall thickness of the working part at the opposite end of the undercut does not exceed 0.2 mm.

In particular cases, the osteotome may have a handle, a guide and a working part, which are made in one piece.

The essence of the utility model is illustrated by a drawing depicting a general view of the osteotome for dentoalveolar reconstruction in Fig. 1, top view of the osteotome in FIG. 2 and a section of the working part of the osteotome in FIG. 3.

Osteotome for dentoalveolar reconstruction contains a handle 1 with a butt 2 and corrugations 3 on the outer surface. The straight guide 4 connects the pointed working part 5 with the handle 1. The working part 1 is made with an outer surface in the form of a cylindrical segment and has an inner surface in the form of a cone segment. The generatrix of the cone segment is oriented to the longitudinal axis of the guide 4 at an angle of 21 degrees. 20 minutes. The outer surface of the working part 5 is oriented to the longitudinal axis of the guide 4 at an angle of 7 degrees. 45 min. and is made with an external subpoint 6. The subpoint 6 is oriented to the outer surface of the working part 5 at an angle of 20 degrees. The wall thickness of the working part 5 at the opposite end of the underpoint 6 does not exceed 0.2 mm. Osteotome for dentoalveolar reconstruction works as follows.

After the formation of the implant bed, an incision is made in the area of the tubercle of the upper jaw and the mucous membrane is exfoliated.

The osteotome is taken by the handle 1 and its pointed working part 5 is inserted to the required depth into the atrophied area of the jaw and the necessary area of the bone autograft is exfoliated with reciprocating movements. If necessary, a butt 2 is used, on which light blows are applied by tapping. When the osteotome is inserted into the tissues, the corrugation 3 on the handle 1 does not allow the osteotome to change its position in the surgeon's hand, and with the help of the guide 4, it can control the position of the sharpening of the working part 5.

The outer surface of the working part 5, oriented to the longitudinal axis of the guide 4 at an angle of 7 degrees. 45 min. and made with an external subpoint 6, which is oriented to the outer surface of the working part 5 at an angle of 20 degrees, provide cutting atraffed fabrics and their collection with minimal effort. The minimum effort during tissue sampling is also ensured by the execution of the working part 5 with a wall thickness at the opposite end of the undercut 6 not exceeding 0.2 mm.

Execution of the working part 5 with an outer surface in the form of a cylindrical segment and with an inner surface in the form of a cone segment oriented to the longitudinal axis of the guide 4 at an angle of 21 degrees. 20 minutes. provides unimpeded retraction of excised tissues along the inner surface of the working part 5 and displacement of the outer surface of the working part 5 in adjacent tissues without widening the incision.

The achievement of a technical result in the implementation of the utility model is confirmed by the following example.

Patient E., 45 years old, applied to the Department of Clinical and Experimental Implantology with complaints of pain in the right HF region, aggravated by biting. From the anamnesis: tooth 2.1 was previously endodontically treated, the last prosthesis was 5 years ago.

Under local anesthesia (infiltration) with a solution of sol. Ultracaini 2% in the zone of tooth 2.1 made an intrasulcular circular incision of the circular ligament of the tooth with a scalpel "15 s", then atraumatic removal of fragments of the tooth root was performed, the granulation tissue was excised, and the socket was irrigated with a solution of "Chlorhexidine bigluconate 0.05%".

A horizontal incision was made along the alveolar ridge in the retromolar region, the mucoperiosteal flap was exfoliated, and a bone autograft of the maxillary tuber bone was harvested using an osteotome.

The bone autograft was taken with an osteotome by its working part 5, which provided a volume sufficient for dentoalveolar reconstruction. When taking the autograft, the outer surface of the working part 5, oriented to the longitudinal axis of the guide 4 at an angle of 7 degrees. 45 min. and made with an external subpoint 6, which is oriented to the outer surface of the working part 5 at an angle of 20 degrees, provide cutting atraffed fabrics and their collection with minimal effort.

The bone autograft was placed in physiological saline, and the autograft was adapted for further installation. The suturing of the wound on the tubercle of the upper jaw was carried out with conventional interrupted sutures.

Further, the resulting adapted bone autograft was wedged into the hole of the extracted tooth, the size and shape corresponded to the vestibular bone wall of the extracted tooth. In the palatal wall, 4 mm from the palatine edge, a bed was formed for the implant, and an Astratech 3.5*11 implant was installed. The wound was sutured with simple interrupted sutures Monosyn 6-0.

Clinical Case #1

NDR in a closed way

Patient E., 45 years old, applied to the Department of Clinical and Experimental Implantology with complaints of pain in the right HF region, aggravated by biting. From the anamnesis: tooth 2.1 was previously endodontically treated, the last prosthesis was 5 years ago.

Under local anesthesia (infiltration) with a solution of sol. Ultracaini 2% in the zone of tooth 2.1 made an intrasulcular circular incision of the circular ligament of the tooth with a scalpel "15c", then atraumatic removal of fragments of the tooth root was performed, the granulation tissue was excised, and the socket was irrigated with a solution of "Chlorhexidine bigluconate 0.05%".

A horizontal incision was made along the alveolar ridge in the retromolar region, the mucoperiosteal flap was exfoliated, and a bone autograft of the bone of the tubercle of the upper jaw was collected using a chisel.

The bone autograft was placed in physiological saline, and the autograft was adapted for further installation. The suturing of the wound on the tubercle of the upper jaw was carried out with conventional interrupted sutures.

Further, the resulting adapted bone autograft was wedged into the hole of the extracted tooth, the size and shape corresponded to the vestibular bone wall of the extracted tooth. In the palatal wall, 4 mm from the palatine edge, a bed was formed for the implant, and an Astratech 3.5*11 implant was installed. The wound was sutured with simple interrupted sutures Monosyn 6-0.

Claims (2)

1. Osteotome for dentoalveolar reconstruction, containing a handle with a butt and a pointed working part oriented at an angle to a straight guide connecting the working part to the handle, characterized in that the working part is made with an outer surface in the form of a cylindrical segment and has an inner surface in the form of a segment cone, the generatrix of which is oriented to the longitudinal axis of the guide at an angle of 21 degrees. 20 min., while the outer surface of the handle is made with corrugations, and the outer surface of the working part is oriented to the longitudinal axis of the guide at an angle of 7 degrees. 45 min. and is made with an external undercut oriented to the outer surface of the working part at an angle of 20 degrees, and the wall thickness of the working part at the opposite end of the undercut does not exceed 0.2 mm. 2. Osteotome according to claim 1, characterized in that the handle, guide and working part are made in one piece.

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