Kondapuram Seshu Madhavi R, Gash Christopher Leslie
Iscraig Dental Surgery, Conwy, Wales LL32 8LD, UK.
Case Rep Dent. 2012;2012:192912. doi: 10.1155/2012/192912. Epub 2012 Jul 5.
The general dental practitioner must consider orthodontic extrusion of a tooth when a subgingival defect, such as, crown fracture occurs before prosthetic rehabilitation, especially in the aesthetic zone. Extrusion enables the root portion to be elevated which exposes sound tooth structure for placement of restorative margins. This case report describes the multidisciplinary management of a fractured upper first premolar in a general dental practice. The forced orthodontic eruption is achieved by an endodontic attachment and sectional fixed appliance with an offset placed in the wire. The ability to extrude premolars with this method is complicated by heavy occlusal forces, occlusal interferences, and short clinical crown length. The tooth was restored with a titanium post, composite core, and porcelain fused to metal crown. The entire course of treatment was carried out under National Health Scheme, UK and as a part of vocational training. The 21 months followup showed no change in occlusal contacts or gingival level.
当在修复治疗前出现诸如牙冠折断等龈下缺损时,尤其是在美观区域,普通牙科医生必须考虑对牙齿进行正畸牵引。牵引可使牙根部分升高,从而暴露出健康的牙体结构以便放置修复边缘。本病例报告描述了在普通牙科诊所对一颗上颌第一前磨牙折断进行的多学科治疗。通过根管内附件和带有偏移量的分段固定矫治器实现强制正畸萌出,该偏移量置于弓丝中。用这种方法牵引前磨牙的能力会因强大的咬合力、咬合干扰和临床冠短小而变得复杂。该牙齿用钛桩、复合树脂核和烤瓷熔附金属冠进行修复。整个治疗过程在英国国家医疗服务体系下进行,作为职业培训的一部分。21个月的随访显示咬合接触或牙龈水平无变化。