Tanaka Orlando Motohiro, Avila Ana Leticia Rocha, Silva Gabriela Molina, Añez Maria Cecilia Galacini, Taffarel Ivan Pedro
Graduate Dentistry Program of Orthodontics, Pontifical Catholic University of Paraná, Curitiba, Brazil.
J Contemp Dent Pract. 2010 Dec 1;11(6):E073-9.
The purpose of this article is to report on the five-year follow-up of a case involving treatment of gingival recession with a subepithelial connective tissue graft prior to orthodontic tooth movement.
Gingival recession has a global prevalence that varies from 3 to 100 percent depending on the population studied and the method of analysis. In addition, the frequency of recession seems to be positively correlated with age. Planned orthodontic tooth movement is not necessarily an etiological factor for gingival recession, so long as it does not move the tooth out of its alveolar process. When the tooth is shifted without adequate biomechanical control, bone dehiscence can develop, and the recession can occur as a consequence of the orthodontic treatment.
A 19.6-year-old female patient was referred for orthodontic treatment due to severe anterior-inferior dental crowding and a mandibular right lateral incisor in linguoverson and 4.0 mm of gingival recession on the labial surface. Normal gingival architecture was restored with a subepithelial connective tissue graft used to cover the 4.0 mm defect, after which orthodontic treatment repositioned the malposed incisor into its correct occlusal alignment. Individualized torque was applied to the mandibular right central incisor during the orthodontic treatment. The patient was reevaluated five years after completion of the orthodontic treatment.
At the five-year recall appointment, the patient exhibited normal tooth alignment and generalized normal gingival architecture; however, 2 mm of gingival recession was noted on the graft site.
This case demonstrated that periodontal surgical correction of facial gingival recession with a subepithelial graft may be performed prior to initiating orthodontic treatment.
本文旨在报告一例在正畸牙齿移动前采用上皮下结缔组织移植治疗牙龈退缩的病例的五年随访情况。
牙龈退缩在全球范围内普遍存在,根据所研究的人群和分析方法,患病率在3%至100%之间。此外,退缩的频率似乎与年龄呈正相关。只要正畸牙齿移动不将牙齿移出牙槽突,计划中的正畸牙齿移动不一定是牙龈退缩的病因。当牙齿在没有足够生物力学控制的情况下移动时,可能会出现骨缺损,正畸治疗可能会导致牙龈退缩。
一名19.6岁女性患者因严重的前下牙拥挤、下颌右侧侧切牙舌倾以及唇面4.0 mm牙龈退缩而被转诊接受正畸治疗。采用上皮下结缔组织移植覆盖4.0 mm的缺损,恢复了正常的牙龈结构,之后正畸治疗将错位的切牙重新定位到正确的咬合位置。正畸治疗期间对下颌右侧中切牙施加了个性化转矩。正畸治疗完成五年后对患者进行了重新评估。
在五年的复查预约中,患者牙齿排列正常,牙龈结构普遍正常;然而,移植部位出现了2 mm的牙龈退缩。
该病例表明,在开始正畸治疗之前,可以采用上皮下移植对牙龈面部退缩进行牙周手术矫正。