Samimi Pouran, Shirban Mohammad-Reza, Arbabzadeh-Zavareh Farahnaz
Department of Operative Dentistry and Torabinejad Dental Research Center, Isfahan University of Medical Sciences, Isfahan, Iran.
Dent Res J (Isfahan). 2012 Jan;9(1):107-10. doi: 10.4103/1735-3327.92962.
The union of two different dental sprouts which can happen in any phase of dental development is commonly called fusion. This developmental anomaly may cause clinical problems including esthetic impairment, which are mainly treated by endodontic and surgical treatments. There are a few reports of conservative not invasive treatment of fused incisors teeth through restorative or prosthetic techniques. They are rarely reported in mandibular posterior teeth. This paper presents an unusual case of fusion of 7 and 8, and also 9 and 10 teeth which was treated with a nonendodontic and nonsurgical conservative approach. Patient was a healthy18-year-old female with chief complaint of bad-looking teeth that in intraoral examination revealed the fusion of 7 and 8, and also 9 and 10 teeth. The space between the mesial of the 6 and 11 teeth was reconstructed. Diastema between the fused teeth was closed. A new lateral tooth was replaced between the fused teeth (7 and 8) and 6 tooth with direct fiber-reinforced composite. The space between the fused teeth (9 and 10) and also tooth 11 was partially closed. Gingival papillas were reconstructed using pink composite. The mandibular anterior missing teeth were replaced with rochett bridge. At the end of treatment the esthetic of the patient was improved. As the treatment was not invasive, major complications are not expected; however, there is potential for eventual long-term periodontal problems due to poor oral hygiene. Debonding of the rochett bridge may happen as well.
两个不同牙胚的联合可发生在牙齿发育的任何阶段，通常称为融合。这种发育异常可能导致包括美观受损在内的临床问题，主要通过牙髓治疗和外科治疗。有少数关于通过修复或修复技术对融合切牙进行非侵入性保守治疗的报道。在下颌后牙中很少见。本文介绍了一例罕见的7和8以及9和10牙融合病例，采用非牙髓和非手术保守方法进行治疗。患者是一名健康的18岁女性，主诉牙齿外观不佳，口腔检查发现7和8以及9和10牙融合。重建了6和11牙近中之间的间隙。关闭融合牙之间的间隙。用直接纤维增强复合材料在融合牙（7和8）与6牙之间替换了一颗新的侧切牙。融合牙（9和10）与11牙之间的间隙部分关闭。用粉红色复合材料重建牙龈乳头。用罗氏桥修复下颌前牙缺失。治疗结束时患者的美观得到改善。由于治疗是非侵入性的，预计不会出现重大并发症；然而，由于口腔卫生不良，最终可能会出现长期牙周问题。罗氏桥也可能会脱粘。
