RU2601654C2 - Method of teeth bussing with possibility of replacement of dentition defects - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely to orthopaedic dentistry, and is intended for use in stabilization of tooth mobility and for replacement of dentition defects. Professional oral hygiene of the patient is performed. Optical impression of oral clinical situation is obtained. Impression is recognized in computer program of CAD\CAM system. Tooth bus is simulated on obtained image, which is located on lingual or palatal surfaces of all available teeth, overlapping at 1 mm clinical equators of teeth, so that its lower border passes in 1.5 mm from marginal gingival edge and comprises artificial dental facets. In case of absence of natural teeth artificial facets are connected to bus monolithically and tightly adjoined to clinical equators, limiting the defect by means of point contact. Then modelled bus is milled of monolithic block of zirconium oxide, it is ground, polished and fixed in patient's oral cavity on dental cement of double hardening. In case of subsequent loss of teeth removed teeth are substituted with artificial facets on saved computer model without repeated reception of patient and changed structure is milled, ground, polished and fixed in oral cavity on dental cement of double hardening.

EFFECT: method enables making adhesive dental bus with included artificial facings fit with high accuracy, identical to clinical situation.

1 cl, 1 dwg

Description

The invention relates to medicine, namely to prosthetic dentistry, and can be used both to stabilize tooth mobility resulting from periodontal diseases, and to replace defects in the dentition.

The prior art method is known in which a channel is formed in the vestibulo-oral direction at the level of contact points between two adjacent teeth, while the inlet and outlet of the channel are widened and have a conical shape with an angle of 30-70 ° (relative to the longitudinal axis of the channel. A bond and composite material are applied to the prepared surfaces of the teeth, and a splinting device, which is a screw and a nut, is installed in the canal, while the screw head and nut have a taper so that their surfaces are tight but adjacent to the conical surfaces of the splinted teeth. Produce light curing. The method allows to increase the reliability of splinting (Patent RU No. 2404722 from 08/06/2008).

A known method of splinting teeth, which consists in making a slot in the middle of the occlusal surface of the splinted teeth, grooves in each stabilized tooth, followed by the installation of a wire beam with a locking element, characterized in that the grooves made in each stabilized tooth are symmetrically angled at both angles of 45 ° side from the longitudinal slot to the interface with the latter, while in the grooves of each tooth set locking elements made in the form of a rod (Patent RU No. 2150913).

A known type of tire in which an impression is taken from the treated teeth and antagonists and the model is cast. A model of a tire from a photocomposite is simulated on the obtained model. A tire is made according to the model from a zirconia blank. The zirconia preform is fired to agglomerate in a furnace for 13 hours. The tire is formed using a turbine tip and a water-cooled diamond bur with the condition that the distance from the edge of the tire facing the neck of the tooth to the marginal edge of the gum is at least 3 mm, to the cutting edge of the teeth - 1-2 mm, while the tire thickness should not be less than 0.3 mm. The inner surface of the tire is sandblasted using alumina. The tire is fixed with a double cured composite. The method allows you to create a strong and durable structure with a high degree of adhesion (Patent RU No. 2394524 of 03.24.2009).

A known method of splinting teeth. Carry out oral hygiene. The surface of the teeth is polished with rubber bands. A fluorine-containing preparation is applied to the surface of the teeth. A silicone register is obtained for matching dentitions. A digital impression of the patient's dentition and bite register is obtained. Match them in the simulation program. The shapes of the future tire are simulated on a computer on the lingual surface of the teeth being splinted, retreating from the marginal gingival margin by a distance of less than 1 mm, depending on the individual patient characteristics. After applying the contour, its thickness is set to 0.2 mm. The obtained data is transmitted to a milling machine, where the tooth tire is milled from a polyurethane block. After polishing and fitting in the oral cavity, the structure is fixed to a dual-cured composite cement. The method allows splinting movable teeth with high accuracy of fit due to computer modeling of the future tire and milling according to the obtained digital model (RF Patent 2464952). This method is selected for the prototype.

The disadvantages of this method is the inability to compensate with its help a dentition defect that may occur during treatment or throughout the use of the tire.

In the absence of one or a number of teeth and the need for splinting, it is possible to use adhesive structures of bridges. The objective of the invention is a long and reliable immobilization of teeth that are mobile due to periodontal disease, with the possibility of replacing defects in the dentition.

The technical result consists in the manufacture of an adhesive dental splint with artificial facets of teeth included, if necessary, with a high accuracy of fit, identical to the clinical situation used to immobilize mobile teeth due to the development of periodontal diseases. As well as the ability to add additional facets of teeth, in the event of subsequent removal of natural teeth at different periods of treatment, without the presence of the patient.

The technical result of the invention is achieved due to the fact that the method of splinting teeth with the possibility of replacing defects in the dentition is to conduct professional hygiene of the patient’s oral cavity with periodontal diseases, to obtain an optical impression of the clinical situation of the patient’s oral cavity, to recognize this print in the CAD / CAM computer program, modeling on the obtained image of a dental splint, which is located on the lingual or palatal surfaces of all existing teeth, overlapping the 1 mm wedges dental equators, so that its lower border extends 1.5 mm from the marginal gingival margin and includes artificial tooth facets, in the absence of natural teeth, the artificial facets are connected to the splint in one piece and fit snugly to the clinical equators of teeth defining the defect by means of point contact, after which the tooth splint simulated on a computer is milled from a monolithic block of zirconium oxide, polished, polished and fixed in the patient’s oral cavity at the dental double cured cement, in the event of subsequent loss of teeth, on the saved computer model, without re-admitting the patient, the extracted teeth are replaced with artificial facets and the changed design is milled, polished, polished and fixed in the oral cavity with double-cured dental cement.

The proposed design of a milled tooth splint will stabilize moving teeth in periodontal diseases, as well as compensate for defects in the dentition. In this case, the bus simulated on a computer remains in the memory of the storage device and can be used for milling at all stages of treatment. If natural teeth are removed during treatment, the computer model of the tire may be supplemented depending on the clinical picture of the oral cavity.

The design of the milled toothbrush is illustrated in the drawing, where in FIG. one.

1. Natural teeth

2. Milled tooth splint

3. Artificial tire facets.

The proposed milled tooth splint is manufactured as follows:

1. Conducting professional oral hygiene of a patient with periodontal diseases.

2. Obtaining an optical impression of the clinical situation of the patient's oral cavity.

3. Computer simulation of the shape of the future tire on the lingual and palatine surfaces of splintered natural teeth (1), overlapping the clinical equators of teeth by 1.5 mm, so that its lower border passes 1 mm from the marginal edge of the gum and has in its composition artificial facets of teeth (3).

4. Data transfer to the milling unit.

5. Milling the tooth splint (2).

6. Polishing the obtained tooth splint (2).

7. Fixation of the tire (2) in the oral cavity to the dual-cured composite cement.

8. In the event of subsequent loss of teeth, on a stored computer model, without re-admission of the patient, the extracted teeth are replaced with artificial facets (3).

9. Milling a modified tooth splint design.

10. Polishing the obtained dental splint (2).

11. Fixation of the tire (2) in the oral cavity to the dual-cured composite cement.

Claims (1)

A method of splinting teeth with the possibility of replacing defects in the dentition is to carry out professional oral hygiene of a patient with periodontal diseases, to obtain an optical impression of the clinical situation of the patient’s oral cavity, to recognize this impression in the CAD / CAM computer program, to simulate the dental splint located on the image on the lingual or palatal surfaces of all existing teeth, overlapping the clinical equators of teeth by 1 mm, so that its lower border passes it moves 1.5 mm away from the marginal gingival margin and incorporates artificial tooth facets; in the absence of natural teeth, the artificial facets are connected with the splint in one piece and fit snugly to the clinical equators of the teeth limiting the defect through point contact, after which the dental model simulated on a computer the tire is milled from a monolithic block of zirconium oxide, grinded, polished and fixed in the patient's oral cavity on double-cured dental cement, in case of subsequent tooth loss stored on a computer model of teeth removed and replaced with artificial facets modified construction is milled without repeated reception of the patient, is ground, polished and is fixed in the oral cavity in dental cement dual cure.

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