Vestibuloplasties with free gingival grafts were performed on 42 teeth in 12 patients exhibiting gingival recession. The tendency toward recurrence was studied after postoperative intervals of 1, 6 and 12 months. The extensions (vestibuloplasties), which were always wider than the transplant, recurred up to the transplantation margin. The transplant itself underwent shrinkage averaging 25 per cent. The vestibular depth, which had been increased by the operation, showed a 25 per cent reduction within 1 month, but then had a tendency to deepen again from 1 to 12 months postoperatively. The marginal free gingiva and sulcus depth were not influenced by the operation.

The effect on marginal inflammation and tooth mobility of occlusal adjustment by grinding was investigated in 43 occlusally traumatized teeth in 29 subjects with gingivitis and marginal periodontitis. The material consisted of 4 groups with tooth mobility of varying degrees of severity, and bone destruction. In all groups increased tooth mobility decreased subsequent to occlusal adjustment. The latter was without effect on the sulcus fluid flow rate or gingivitis scores in either gingivitis or periodontitis patients.