Surgical extrusion of a maxillary premolar after orthodontic extrusion: a retrospective study
10.5125/jkaoms.2019.45.5.254
- Author:
Yong Hoon CHOI
1
;
Hyo Jung LEE
Author Information
1. Department of Conservative Dentistry, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, Korea.
- Publication Type:Original Article
- Keywords:
Surgical extrusion;
Maxillary premolar;
Surgical crown lengthening
- MeSH:
Bicuspid;
Follow-Up Studies;
Orthodontic Extrusion;
Retrospective Studies;
Root Caries;
Root Resorption;
Splints;
Tooth
- From:Journal of the Korean Association of Oral and Maxillofacial Surgeons
2019;45(5):254-259
- CountryRepublic of Korea
- Language:English
-
Abstract:
OBJECTIVES: Crown-root fracture and cervical caries in maxillary premolars constitute a challenge in cases of subgingival placement of restoration margins. Surgical extrusion has been practiced successfully in permanent anterior teeth. The aim of the present retrospective study was to assess the clinical outcome of surgical extrusion after orthodontic extrusion in maxillary premolars. MATERIALS AND METHODS: Twenty-one single, tapered root maxillary premolars with subgingival crown-root fracture or caries were included. Presurgical orthodontic extrusion was performed on all teeth to prevent root resorption. Extent of extrusion and rotation was determined based on crown/root ratio. The postoperative splinting period was 7 to 14 days. Clinical and radiographic examination was performed at an interval of 1, 2, and 3 months. RESULTS: After the mean follow-up of 41.9±15.2 months, failure was observed as increased mobility in 3 of 21 cases. No significant difference was observed in the outcome of surgical extrusion based on tooth type, age, sex, 180° rotation, or time for extraction. Furthermore, marginal bone loss was not observed. CONCLUSION: Surgical extrusion of maxillary premolars can be a possible therapeutic option in cases of subgingival crown-root fracture.
