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US 4,998,881 AGranted
Device and method for producing implant cavities
OwnerNikola Lauksinventor
Life of this patent
Estimating the term…
Abstract
Implant cavities are drilled in the jaw of a patient by first forming a template from a plastic cast of an impression of the jaw regions after it has been prepared as for parallel-crown preparation and the template is provided with parallel bores in which slide sleeves guiding the drill bit of the drill can be received.
Claims24
A jaw-surgery instrument for boring implant cavities, comprising:
- a drill provided with a boring tool;
- a guide sleeve receiving said tool and slidably guiding said tool along an axis of said guide sleeve;
- a guide-sleeve template conforming in shape to a shape of a jaw region of a patient to receive an implant and holding said guide sleeve for positioning said guide sleeve in said jaw region of the patient, said guide sleeve being formed with an end turned toward said drill and an end turned away from said drill and received in said template, said end turned toward said drill being formed with a radially outwardly extending annular flange;
- and
- a slide extending upwardly from said annular flange and guiding said drill relative to said guide sleeve.
2 more elements
A method of boring implant cavities in a jaw bone of a jaw region of a patient, comprising the steps of:
- (a) grinding residual teeth correspondingly to parallel clinical crown preparation in said region;
- (b) forming an anatomically correct impression of said region;
- (c) casting a model of said anatomically correct impression;
- (d) modelling of a hardenable synthetic resin in a plastically deformable form, a template of said region on said model;
- (e) using said template as a guide for drilling cavities in the jaw bone of the jaw region of the patient;
- and
- (f) drilling holes with a drill in said template at locations at which said cavities are to be provided, whereby a guide sleeve for boring said cavities is inserted in at least one of said holes, said guide sleeve being formed with an end turned toward said drill and an end turned away from said drill and received in said template, said end turned toward said drill being formed with a radially outwardly extending annular flange, and said annular flange having a slide secured thereto extending upwardly and guiding said drill relative to said guide sleeve.
4 more elements
Dependencies are inferred from the claim text.