Gowda Vinayak S, Chava Vijay, Kumara Ajeya E G
Department of Periodontics, V S Dental College and Hospital, Bangalore, India.
J Indian Soc Periodontol. 2011 Oct;15(4):393-7. doi: 10.4103/0972-124X.92577.
To evaluate the effectiveness of a resorbable, semi rigid guided tissue regeneration (GTR) membrane in the treatment of periodontal intraosseous defects.
Randomized controlled clinicoradiological re-entry study.
Eight patients with bilateral, identical intraosseous defects were selected. The sides for test and control group were randomly allocated to treat either with bioresorbable semi rigid membrane (test group) or open flap debridement (control group). Radiographic analysis was done by comparing intraoral peri apical radiographs taken at baseline and at six months. Extended cone paralleling device with grid was used to standardize radiographs. Auto CAD software was used for the analysis.
Paired-t test.
On surgical reentry at six months, the mean reduction in depth of the defect at the test site was 2.63 mm. The mean gain in Relative attachment level was 1.75 mm. The control sites showed a statistically insignificant gain. The mean percentage defect fill assessed on radiographs using auto CAD software was 15.54%.
The resorbable, semi-rigid GTR membrane can be effectively used for the treatment of human one-walled angular defects.
评估一种可吸收的半刚性引导组织再生（GTR）膜治疗牙周骨内缺损的有效性。
随机对照临床放射学再入研究。
选取8例双侧相同骨内缺损患者。试验组和对照组的治疗侧随机分配，分别采用生物可吸收半刚性膜治疗（试验组）或开放式翻瓣清创术（对照组）。通过比较基线时和6个月时拍摄的口腔根尖周X线片进行影像学分析。使用带网格的长锥平行投照装置使X线片标准化。采用Auto CAD软件进行分析。
配对t检验。
6个月时再次手术探查发现，试验部位缺损深度平均减少2.63mm。相对附着水平平均增加1.75mm。对照组的改善在统计学上无显著意义。使用Auto CAD软件在X线片上评估的缺损平均填充百分比为15.54%。
可吸收的半刚性GTR膜可有效用于治疗人类单壁角形缺损。
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