Wei P C, Geivelis M, Chan C P, Ju Y R
Department of Periodontics, Chang Gung Memorial Hospital, Taoyuan, Taiwan.
J Periodontol. 1999 Dec;70(12):1540-6. doi: 10.1902/jop.1999.70.12.1540.
Palato-radicular groove (PRG) is a common developmental anomaly of maxillary incisors, whereas PRG associated with a birooted maxillary incisor is relatively infrequent. The clinical significance of PRG is related to the incidence of localized periodontitis with or without pulpal pathosis, depending on the depth, extent, and complexity of the groove. Successful treatments of PRG in single-rooted incisors have been reported in the literature. However, treatment of PRG in birooted incisors has often been ineffective. This case report describes a pulpal-periodontal combined lesion occurring on a birooted maxillary left lateral incisor with concomitant PRG in a 13-year-old boy which was successfully treated by conventional endodontic therapy in combination with periodontal treatment including accessory root resection, radiculoplasty and bone grafting. Seven-year follow-up is included in this report. The basis of a successful result is accurate diagnosis and elimination of inflammatory irritants and contributory factors. Awareness of the existence of this abnormality by the clinician is important.
腭根沟（PRG）是上颌切牙常见的发育异常，而与双根上颌切牙相关的PRG相对少见。PRG的临床意义与局限性牙周炎伴或不伴牙髓病变的发生率有关，这取决于沟的深度、范围和复杂程度。文献中已报道了单根切牙PRG的成功治疗案例。然而，双根切牙PRG的治疗往往无效。本病例报告描述了一名13岁男孩的左上双根上颌侧切牙发生的牙髓-牙周联合病变，并伴有PRG，通过传统牙髓治疗联合牙周治疗（包括副根管切除术、根管成形术和骨移植）成功治愈。本报告包含7年随访。成功治疗的基础是准确诊断并消除炎症刺激物和促成因素。临床医生了解这种异常的存在很重要。
