Retrospective Study on the Survival Rate of Preformed Metal Crowns in Permanent First Molars
10.5933/JKAPD.2020.47.2.140
- Author:
Nayoung OH
1
;
Soonhyeun NAM
;
Jaesik LEE
;
Hyunjung KIM
Author Information
1. Department of Pediatric Dentistry, Kyungpook National University Dental Hospital
- Publication Type:1
- From:
Journal of Korean Academy of Pediatric Dentistry
2020;47(2):140-147
- CountryRepublic of Korea
- Language:Korean
-
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.
