[Severe complication of a bonded mandibular lingual retainer]
SourceL' Orthodontie Française, 85, 2, (2014), pp. 217-222
Article / Letter to editor
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Orthodontics and Oral Biology
L' Orthodontie Française
SubjectRadboudumc 10: Reconstructive and regenerative medicine RIHS: Radboud Institute for Health Sciences
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 degrees 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.
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