J Korean Acad Pediatr Dent.
2020 May;47(2):140-147. 10.5933/JKAPD.2020.47.2.140.
Retrospective Study on the Survival Rate of Preformed Metal Crowns in Permanent First Molars
- Affiliations
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- 1Department of Pediatric Dentistry, Kyungpook National University Dental Hospital
- 2Department of Pediatric Dentistry, College of Dentistry, Kyungpook National University
- KMID: 2511418
- DOI: http://doi.org/10.5933/JKAPD.2020.47.2.140
Abstract
- This study analyzed the longevity of preformed metal crowns (PMCs) in first permanent molars and evaluated factors influencing their survival during a long-term follow-up period. In all, 115 first permanent molars treated with PMCs between June 2008 and June 2018 were retrospectively analyzed. The overall combined success rate for the study group was 84.3%. The 5-year survival rate was 82.8%. Multivariate Cox regression analyses identified distal cavities and mandibular PMC placement as risk factors for restoration failure. Careful placement of PMCs at the final try-in stage augments the longevity of the crown.
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