A 15-year clinical comparative study of the cumulative survival rate of cast metal core and resin core restorations luted with adhesive resin cement.

Takayuki Hikasa, Yoshizo Matsuka, Atsushi Mine, Hajime Minakuchi, Emilio satoshi Hara, Bart Van Meerbeek, Hirofumi Yatani, Takuo Kuboki

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The aim of this study was to compare the core survival rates (CSRs) of cast metal versus resin core restorations luted with adhesive resin cement, as well as to determine the risk factors for core failure. Nine hundred ninety-one patients (2,124 cores) who received either cast metal or resin cores luted with adhesive resin cement at the Fixed Prosthodontic Clinic of Okayama University Dental Hospital between April 1988 and December 1991 and whose structured clinical core record was filled appropriately comprised the study subjects. The clinical core record included information regarding patient age, sex, core restoration type, tooth location, tooth type, remaining coronal dentin, and root canal form. CSRs, as well as causes for failure, were analyzed 15 years postinsertion. Since 381 patients lacked data regarding predictors for core failure, a subsample of 610 patients (1,053 cores) was used for the subsequent risk factor analysis. The cumulative CSR of resin cores (78.7%) was significantly higher than that of cast metal cores (55.4%; log-rank test, P <.0001). The Cox proportional hazards test revealed that sex (male, P <.0001), absence of remaining coronal dentin (P = .0057), core restoration type (cast metal, P = .0186), and higher age at core insertion (P = .0380) were significant predictors for core failure. The incidence of complications, such as core loosening (P = .0016) and tooth extraction (P <.0001), was significantly higher in cast metal cores. Cast metal cores were associated with a significantly lower CSR than resin cores, and significant risk factors for core failure were sex (male), absence of remaining coronal dentin, core restoration type (cast metal), and higher age at core insertion.

Original languageEnglish
Pages (from-to)397-405
Number of pages9
JournalThe International journal of prosthodontics
Volume23
Issue number5
Publication statusPublished - Sep 2010

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Resin Cements
Survival Rate
Metals
Dentin
Tooth
Prosthodontics
Tooth Extraction
Dental Pulp Cavity
Clinical Studies
Adhesive cement
Statistical Factor Analysis
Incidence

ASJC Scopus subject areas

  • Oral Surgery

Cite this

A 15-year clinical comparative study of the cumulative survival rate of cast metal core and resin core restorations luted with adhesive resin cement. / Hikasa, Takayuki; Matsuka, Yoshizo; Mine, Atsushi; Minakuchi, Hajime; Hara, Emilio satoshi; Van Meerbeek, Bart; Yatani, Hirofumi; Kuboki, Takuo.

In: The International journal of prosthodontics, Vol. 23, No. 5, 09.2010, p. 397-405.

Research output: Contribution to journalArticle

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