Biomedical subjects
Publications and source records attributed to S E Guyer.
Single crystal sapphire implants are commercially prepared ceramics of aluminum oxide. These endosseous implants have been placed in patients at Washington University since 1978. The course of patients has been followed closely with periodic clinical and radiographic evaluations. Sapphire is well tolerated by hard and soft tissue and provides excellent abutments for fixed partial dentures.
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1. Statistical analysis of the graphic data showed no significant difference between the Denar D5A and Hanau 130-21 articulators for the five subjects tested. 2. The average horizontal Gothic arch angle (beta) at incision was 135 degrees. 3. The functional stroke for the subjects was approximately 5 mm. in the incisor region and 2.5 to 3 mm. in each molar region. 4. Both the Denar D5A and Hanau 130-21 articulators adequately reproduced jaw motion for the five subjects tested.
Vital mandibular canine roots were submerged submucosally ina 52-year-old man. The events that occurred during 27 months of observation, while the patient wore dentures over the retained roots, were described.