Pazera Pawel, Fudalej Piotr, Katsaros Christos
Département d'Orthodontie et Orthopédie Dento-Faciale, Université de Berne, Berne, Suisse.
Département d'Orthodontie, Université Palacky, Olomouc, République Tchèque.
Orthod Fr. 2014 Jun;85(2):217-22. doi: 10.1051/orthodfr/2013060. Epub 2014 Jun 16.
Bonding a flexible spiral wire retainer to the lingual surfaces of all six anterior mandibular teeth is a commonly used type of retention. Complications are rare but can be serious enough to produce biologic damage. This article presents a serious complication of a lingual flexible spiral wire retainer. Four years after the orthodontic treatment, a 20-years-old man sought treatment for a broken flexible spiral wire retainer. The clinical examination showed about 35° of buccal root torque of that tooth. A cone-beam computed tomography image showed that the root and the apex of the tooth were almost completely out of the bone on its buccal side. Surprisingly, the tooth's vitality was preserved. The tooth was moved back, nearly to its original position; clinically, only a gingival recession remained. Orthodontists and dentists should be aware of possible complications of bonded retainers. Patients should be clearly informed how to detect problems at an early stage.
将柔性螺旋丝保持器粘结到下颌所有六颗前牙的舌面是一种常用的保持方式。并发症很少见，但可能严重到足以造成生物损伤。本文介绍了一例舌侧柔性螺旋丝保持器的严重并发症。正畸治疗四年后，一名20岁男性因柔性螺旋丝保持器断裂前来就诊。临床检查显示该牙颊侧牙根转矩约为35°。锥形束计算机断层扫描图像显示，该牙的牙根和根尖在颊侧几乎完全脱离牙槽骨。令人惊讶的是，该牙仍保持活力。将该牙向后移动，几乎回到其原始位置；临床上，仅遗留牙龈退缩。正畸医生和牙医应意识到粘结保持器可能出现的并发症。应明确告知患者如何早期发现问题。
