Abstract: Disclosed is a dental prosthetic device having an implant, a cap and an abutment interposed between the implant and the cap. The abutment includes an abutment head which is at least partially delimited by an abutment external face and which is configured to retain the cap. The abutment has an abutment body with an attachment to the implant. Retention is accomplished by a nesting arraignment for fitting the abutment head inside a cavity which is formed inside the cap and which is at least partially delimited by a cap internal face. The cap is screwed onto the abutment head. The cap internal face is provided with a tab which is in contact against the abutment external face. A space is left between a point of contact of the cap internal face and a cone lip of the cap internal face between the abutment external face and the cap internal face.

Abstract: Disclosed is a dental prosthetic device having an implant, a cap and an abutment interposed between the implant and the cap. The abutment includes an abutment head which is at least partially delimited by an abutment external face and which is configured to retain the cap. The abutment has an abutment body with an attachment to the implant. Retention is accomplished by a nesting arraignment for fitting the abutment head inside a cavity which is formed inside the cap and which is at least partially delimited by a cap internal face. The cap is screwed onto the abutment head. The cap internal face is provided with a tab which is in contact against the abutment external face. A space is left between a point of contact of the cap internal face and a cone lip of the cap internal face between the abutment external face and the cap internal face.

Abstract: A dental instrument 1 adapted for performing osteotomy includes a mounting shank 2 and, in line therewith, a working portion 3 including cutting zones 3A, of which at least part is covered by a coating of carbon-enriched tungsten carbide except for a plurality of annular bands 10 distributed along the length of the working portion to indicate the depth of penetration of the tool into a portion of jaw.