Abstract
We evaluated the efficacy of guided tissue regeneration (GTR) in generalized chronic periodontitis. GTR using multiple membranes for a series of bone defects is applicable provided that no more than 2 bone defects are involved. Therefore, multiple membranes technique to place several membranes on series of bone defects and vestibularplasty utilizing muco-gingival split flap to maintain the new regenerated tissue optimally were developed. We evaluated clinical parameters before and 1 year after in 35 teeth of 13 patients having a probing pocket depth (PPD) exceeding 6 mm and the clinical attachment level (CAL). Preoperative PPD was 7.3±1.7 mm and CAL 8.4±2.1 mm. Postoperative PPD 1 year after treatment was 2.0±0.8 mm and CAL 3.7±1.6 mm. The sufficient attachment gain was reveal as 4.7±1.8 mm (p< 0.05).
Compared to GTR applied to a single tooth, we observed almost the same attachment gain. Combining multiple membranes technique and vestibularplasty using a mucogingival split flap has appears useful in regenerating the periodontal tissue and treating generalized chronic periodontitis. J Jpn Soc Periodontol, 44: 188-198, 2002.
