Narang Sumit, Gupta Ruby
Department of Periodontics, Peoples College of Dental Science and Research Centre, Bhopal, India.
Indian J Dent Res. 2011 Nov-Dec;22(6):749-54. doi: 10.4103/0970-9290.94567.
Gingival recession in its localized or generalized form is an undesirable condition which results in root exposure. Several different techniques have been described in order to cover the exposed root surface, and increase the dimensions of the keratinized tissue in gingival recession defects. The aim of the present study is to evaluate the result using a bio resorbable membrane for the treatment of human isolated buccal gingival recession.
Ten patients, i.e. 6 males and 4 females, mean age 34.5 years, with Miller's classification class I or II facial mucogingival defects were selected. A full thickness flap up to the mucogingival junction, followed by a split thickness flap was reflected. This was done so as to cover the membrane at the defect site, at the same time cover the denuded root surface. All parameters were recorded by a single investigator for each surgical site before surgery (baseline), after 3 weeks, 3 months, 6 months and 9 months.
The selected sites clinically presented with initial mean recession of 4.4 mm, mean area of recession of 10.5 mm and initial mean keratinized tissue width 4.2 mm. The results of this study had showed a mean coverage of the recession defects by 3.45 mm and a significant gain in keratinized tissue width of 0.8 mm post operatively at nine months. There was also a significant reduction in area of recession. The difference between the base line reading and post operative readings was both clinically and statistically significant. The mean percentage of root coverage was 79.75%.
Resorbable membrane is a versatile treatment modality for coverage of isolated buccal gingival recession. Although membrane exposure occurred in four patients, it did not interfere with post operative healing.
局限性或广泛性牙龈退缩是一种不良状况，会导致牙根暴露。为了覆盖暴露的牙根表面并增加牙龈退缩缺损处角化组织的范围，人们描述了几种不同的技术。本研究的目的是评估使用生物可吸收膜治疗人类孤立性颊侧牙龈退缩的效果。
选取10例患者，即6例男性和4例女性，平均年龄34.5岁，患有米勒分类I级或II级面部黏膜牙龈缺损。掀起至黏膜牙龈交界处的全厚瓣，然后翻起半厚瓣。这样做是为了在缺损部位覆盖膜，同时覆盖裸露的牙根表面。在手术前（基线）、3周、3个月、6个月和9个月时，由一名研究人员记录每个手术部位的所有参数。
所选部位临床上最初平均退缩4.4毫米，平均退缩面积10.5平方毫米，最初平均角化组织宽度4.2毫米。本研究结果显示，9个月时退缩缺损平均覆盖3.45毫米，角化组织宽度术后显著增加0.8毫米。退缩面积也显著减少。基线读数与术后读数之间的差异在临床和统计学上均具有显著性。牙根覆盖的平均百分比为79.75%。
可吸收膜是覆盖孤立性颊侧牙龈退缩的一种通用治疗方式。尽管有4例患者出现了膜暴露，但这并未干扰术后愈合。
