Abstract
In our department, clinical application of dense particulate hydroxyapatite (HAP) to various types of jawbone defects has produced good results since July 1984. The present paper describes the clinical and radiographic evaluation of 5 cases of full all ridge augmentation with HAP. Primarily, they were evaluated by clinical and radiographic findings, and graded into three groups:
1. Cases in which no postoperative infection or wound dehiscence occurred and in which almost all of the HAP was retained and bonded to the peripheral bone.……(good)
2. Cases in which some loss of HAP occurred due to postoperative infection or dehiscence, but in which most of the HAP was retained.……(fair)
3. Cases in which postoperative infection or wound dehiscence occurred and in which almost all HAP was lost.……(poor)
Secondarily, they were evaluated chrologically with respect to Cephalo X-ray films and study models which were also obtained before surgery, immediately after surgery,3 months after, and 3 years after.
The material used was dense particulate hydroxyapatite,0.5～1.2mm in diameter, which had been sintered from amorphous hydroxyapatite by the wet cake method at 1,200℃.
Five cases of atrophied alveolar bone were treated with HAP employing the tunnel technique, and all results were satisfactory.
