Aizenbud Dror, Levin Liran, Lin Shaul, Michtei Eli E
Orthodontics and Craniofacial Department, Graduate School of Dentistry, Rambam Health Care Campus and Bruce Rappaport Faculty of Medicine-Technion, Israel Institute of Technology, Haifa, Israel.
Orthodontics (Chic.). 2011 Spring;12(1):48-59.
This report presents a multidisciplinary approach to the treatment of a rare case of a distally impacted mandibular second premolar indicating a 90-degree tilt of the long axis in a healthy, 15-year-old girl. It also describes the clinical and radiologic findings after a 10-year longitudinal follow-up period. The horizontally impacted mandibular second premolar was positioned behind the roots of the first molar and in close proximity to the root of the second molar, toward the lingual cortex of the mandibular body. Treatment methods required 2 years of cooperation among an orthodontist, an oral and maxillofacial surgeon, a periodontist, and an endodontist to achieve a leveled and aligned position in a properly healed condition. Finally, the horizontally impacted mandibular second premolar was correctly positioned in the arch surrounded by healed periodontal ligament tissue. Root resorption of the adjacent orthodontic anchorage units was recorded. The 10-year postoperative follow-up presented a stable, functional, and symptom-free permanent mandibular second premolar. The multidisciplinary dental team's considerations and cooperation account for the successful repositioning of the compromised mandibular second premolar with minimal damage to the surrounding hard and soft tissue following 10 years of longitudinal follow-up.
本报告介绍了一种多学科方法治疗一名罕见的下颌第二前磨牙远中阻生病例，该病例发生在一名健康的15岁女孩身上，其长轴呈90度倾斜。报告还描述了10年纵向随访后的临床和放射学检查结果。水平阻生的下颌第二前磨牙位于第一磨牙牙根后方，紧邻第二磨牙牙根，靠近下颌体的舌侧皮质。治疗方法需要正畸医生、口腔颌面外科医生、牙周病医生和牙髓病医生共同协作两年，以在愈合良好情况下实现该牙的整平与排齐。最终，水平阻生的下颌第二前磨牙在被愈合的牙周膜组织包绕的牙弓中正确归位。记录了相邻正畸支抗单位的牙根吸收情况。术后10年随访显示，下颌第二前磨牙稳固、功能正常且无症状。多学科牙科团队的考量与合作促成了受损下颌第二前磨牙的成功复位，在10年纵向随访后对周围软硬组织的损伤降至最低。
