Retrospective Study on the Survival Rate of Preformed Metal Crowns in Permanent First Molars

Nayoung Oh (오나영); NAM Soon-Hyeun (남순현); 이제식; Kim, Hyun - Jung (김현정)

doi:10.5933/JKAPD.2020.47.2.140

Retrospective Study on the Survival Rate of Preformed Metal Crowns in Permanent First Molars

Journal of the Korean academy of pediatric dentistry
Abbr : J Korean Acad Pediatr Dent
2020, 47(2), pp.140~147
DOI : 10.5933/JKAPD.2020.47.2.140
Publisher : The Korean Academy Of Pediatric Dentistry
Research Area : Medicine and Pharmacy > Dentistry
Received : September 24, 2019
Accepted : November 4, 2019
Published : May 29, 2020

Nayoung Oh ¹, NAM Soon-Hyeun ², 이제식 ², Kim, Hyun - Jung ²

¹경북대학교치과병원 소아치과
²경북대학교

Accredited

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.

KEYWORDS

Permanent first molar, Preformed metal crown, Stainless steel crown, Survival rate

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