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Biomedical subjects

R A Jaffin

Publications and source records attributed to R A Jaffin.

6 recordsLinked to original sources
PubMed1991

The excessive loss of Branemark fixtures in type IV bone: a 5-year analysis.

The predictability of branemark implants has been well documented. High success rates in the maxilla and mandible in fully and partially edentulous patients can be expected. A host of factors may be attributed to the etiology of fixture loss. However, the quality of bone stands out as the single greatest determinant in fixture loss. Types I, II, and III bone offer good strength. Type IV bone has a thin cortex and poor medullary strength with low trabecular density. Ninety percent of 1,054 implants placed were in Types I, II, and III bone. Only 3% of these fixtures were lost; of the 10% of the fixtures placed in Type IV bone, 35% failed. Presurgical determination of Type IV bone may be one method to decrease implant failure.

Dental Implantation, Endosseous↗
PubMed1989

Biologic and clinical rationale for second-stage surgery and maintenance.

Increased understanding of the biologic and functional demands of osseointegration procedures have enhanced predictability. Basic science and clinical research have added to our knowledge of the microbiologic, histologic, and functional requirements of what constitutes successful cases. It is evident that control of the microbial flora around abutments is vital in maintaining peri-implant health. It has also been shown that a potential pathogenic flora is more likely to occur in the partially edentulous patient. More predictable indicators of peri-implant disease must be established, as classic periodontal measurements do not correspond to the active disease state around implants. Second-stage surgery must create a peri-implant environment in which functional and biologic needs are met. The patient's esthetic and phonetic requirements must be fulfilled. Using procedures described in this article these standards can be achieved.

Dental Implantation, Endosseous↗