Machtei E E, Dunford R, Grossi S G, Genco R J
Department of Oral and Maxillofacial Surgery, Rambam University Hospital, Haifa, Israel.
Int J Periodontics Restorative Dent. 1995 Dec;15(6):590-9.
The purpose of the present study was to evaluate the effect of barrier membrane exposure on the success of guided tissue regeneration in Class II furcation defects. Twenty-six subjects with mandibular Class II furcation defects received initial periodontal therapy followed by guided tissue regeneration surgery. The membrane was placed and the flaps were repositioned so that the membrane was totally submerged. Membranes were removed 4 to 6 weeks later, at which time the extent of their exposure was recorded. An overall improvement in all clinical parameters was observed for all subjects 1 year after surgery. Half of the patients had experienced no membrane exposure, while the other 13 subjects had experienced mild to pronounced exposure; both groups showed similar improvement in all clinical and surgical parameters. In light of the comparable results obtained in exposed sites, and the anatomic difficulties sometimes encountered in covering a membrane completely, in some of these cases the membrane may be left only partially submerged. This approach will allow for tighter occlusal "seal" of the tooth-membrane interface and preservation of the keratinized gingiva.
本研究的目的是评估屏障膜暴露对Ⅱ类根分叉病变引导组织再生成功与否的影响。26名患有下颌Ⅱ类根分叉病变的受试者接受了初始牙周治疗，随后进行引导组织再生手术。放置屏障膜并将瓣复位，使屏障膜完全被覆盖。4至6周后取出屏障膜，记录其暴露程度。术后1年，所有受试者的所有临床参数均有整体改善。一半患者未出现屏障膜暴露，而其他13名受试者出现了轻度至明显的暴露；两组在所有临床和手术参数方面均显示出相似的改善。鉴于在暴露部位获得了可比的结果，以及在完全覆盖屏障膜时有时会遇到解剖学上的困难，在某些情况下，屏障膜可能仅部分被覆盖。这种方法将允许对牙齿-屏障膜界面进行更紧密的咬合“密封”，并保留角化龈。
