Al-Junaid Sama, Acharya Priti
a Eastman Dental Hospital , UCLH , London , UK.
J Orthod. 2018 Sep;45(3):198-202. doi: 10.1080/14653125.2018.1481694. Epub 2018 Jul 5.
Root resorption is a common but undesirable side-effect of orthodontic treatment. It is a well-recognised phenomenon largely associated with impacted or unerupted teeth and in most cases, is mild and does not affect longevity of the affected teeth. This case report of a medically fit and healthy Caucasian boy who was undergoing orthodontic treatment at the Eastman Dental Hospital, UCLH (EDH) for management of his severe hypodontia, presents an unusual incident of bilateral resorption of his maxillary first permanent molars by the unerupted second molars. The near end-of treatment radiographs showed that both upper second molars were mesio-angularly impacted and resorbing the first molars; however, the patient reported no associated signs or symptoms. Bilateral Cone Beam Computed Tomography radiographs were requested for the posterior maxillary arch in the area of the molar dentitions and extensive root resorption affecting the first molars caused by the crown of the mesio-angularly impacted second molars was evident. This unusual bilateral root resorption of maxillary first molars associated with unerupted second molars is an uncommon presentation, with no similar case reports found in the literature. Great emphasis should be placed on informed valid consent and potentially making the patient aware of the small but potential risk of resorption of erupted terminal molars where orthodontic molar distalisation is considered.
牙根吸收是正畸治疗中常见但不良的副作用。这是一种广为人知的现象，主要与阻生或未萌出的牙齿有关，在大多数情况下，程度较轻，不会影响患牙的寿命。本病例报告的是一名身体健康的白种男孩，他正在伦敦大学学院医院伊斯特曼牙科医院（EDH）接受正畸治疗，以处理其严重的恒牙先天缺失问题，该病例呈现了上颌第一恒磨牙被未萌出的第二磨牙双侧吸收的罕见情况。治疗接近尾声时的X光片显示，两颗上颌第二磨牙均近中倾斜阻生，并正在吸收第一磨牙；然而，患者并未报告相关的体征或症状。对磨牙牙列区域的上颌后牙弓进行了双侧锥形束计算机断层扫描（CBCT），结果显示近中倾斜阻生的第二磨牙牙冠导致第一磨牙出现广泛的牙根吸收。上颌第一磨牙与未萌出的第二磨牙相关的这种罕见的双侧牙根吸收情况并不常见，文献中未发现类似病例报告。在考虑正畸磨牙远移时，应高度重视充分有效的知情同意，并让患者了解已萌出的末端磨牙存在虽小但潜在的吸收风险。
