Ngan P W, Burch J G, Wei S H
Ohio State University, College of Dentistry, Columbus 43210.
Quintessence Int. 1991 Feb;22(2):103-11.
The purpose of this retrospective study was to determine changes in recession and other periodontal factors after orthodontic treatment of malocclusions. Twenty patients with preorthodontic labial recession on one or more mandibular central incisors were studied. Ten patients had received autogenous gingival grafts in the area of recession prior to orthodontics, while ten received no graft. The teeth presenting recession had been retruded from a preorthodontically prominent arch position. Moderate inflammation of marginal tissues and fair-to-poor oral hygiene were maintained by the patients. Statistically significantly less gingival recession was found in both groups after orthodontic treatment than was found pretreatment. The results of this study indicated that labial recession tends to decrease with retrusion of mandibular incisors even when moderate inflammation and fair-to-poor oral hygiene persist. Preorthodontic gingival grafting did not further decrease the postorthodontic gingival recession.
这项回顾性研究的目的是确定错牙合畸形正畸治疗后牙龈退缩及其他牙周因素的变化。研究了20例一个或多个下颌中切牙存在正畸治疗前唇侧牙龈退缩的患者。10例患者在正畸治疗前已在牙龈退缩区域接受了自体牙龈移植，而另外10例未接受移植。出现牙龈退缩的牙齿已从正畸治疗前的前突牙弓位置后移。患者维持了边缘组织的中度炎症和一般至较差的口腔卫生状况。正畸治疗后，两组患者的牙龈退缩在统计学上均显著低于治疗前。本研究结果表明，即使存在中度炎症和一般至较差的口腔卫生状况，下颌切牙后移时唇侧牙龈退缩往往会减少。正畸治疗前的牙龈移植并未进一步减少正畸治疗后的牙龈退缩。
