Anderegg C R, Metzler D G, Nicoll B K
Periodontics Department, 22nd Dental Company, Camp Lejuene, NC, USA.
J Periodontol. 1995 May;66(5):397-402. doi: 10.1902/jop.1995.66.5.397.
Consistently successful regenerative therapy for furcation defects using membrane techniques remains a challenge for clinicians. The purpose of this study was to determine if the thickness of tissue used to cover the membrane influences postsurgery recession. Thirty-seven (37) moderate to advanced adult periodontitis patients presenting with at least one mandibular or maxillary molar class 1 or 2 facial furcation involvement participated in the study. Mid-facial presurgery recession was recorded from the cemento-enamel junction to the free gingival margin at a reproducible point. Mid-facial tissue thickness was measured using calipers at a point 5 mm apical to the gingival margin of the mucogingival flap reflected at the time of guided tissue regeneration surgery. Patients were divided into 2 groups based upon tissue thickness measurement. Patients were then re-evaluated for recession at 6 months postsurgery. Sixteen (16) patients with tissue thickness < or = 1 mm demonstrated a mean 2.1 mm increase in recession, while 21 patients with tissue thickness > 1 mm exhibited a mean 0.6 mm increase in recession. We conclude that there is less post-treatment recession (P < 0.01) for tissue thickness > 1 mm than tissue thickness < or = 1 mm. Hence, thickness of gingival tissue covering a membrane appears to be a factor to consider if post-treatment recession is to be minimized or avoided.
对于临床医生而言，持续成功地运用膜技术治疗根分叉病变仍然是一项挑战。本研究的目的是确定用于覆盖膜的组织厚度是否会影响术后牙龈退缩。37名患有至少一颗下颌或上颌第一或二类面部根分叉病变的中度至重度成年牙周炎患者参与了该研究。在一个可重复的点记录从牙骨质-釉质界到游离龈缘的面部术前牙龈退缩情况。在引导组织再生手术时所翻起的黏膜牙龈瓣的龈缘根尖向5mm处，用卡尺测量面部组织厚度。根据组织厚度测量结果将患者分为两组。然后在术后6个月对患者的牙龈退缩情况进行重新评估。16名组织厚度≤1mm的患者牙龈退缩平均增加2.1mm，而21名组织厚度＞1mm的患者牙龈退缩平均增加0.6mm。我们得出结论，组织厚度＞1mm的患者术后牙龈退缩（P＜0.01）比组织厚度≤1mm的患者少。因此，如果要尽量减少或避免术后牙龈退缩，覆盖膜的牙龈组织厚度似乎是一个需要考虑的因素。
