Fracture resistance of 3 types of primary esthetic stainless steel crowns

Sean Beattie, Burak Taskonak, James Jones, Judith Chin, Brian Sanders, Angela Tomlin, James Weddell

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Background and Objective: Demand is increasing for esthetic restorations in pediatric dentistry. When full coverage is indicated, one option is to use esthetic stainless steel crowns (SSCs). However, this type of crown is prone to fracture. The purpose of this study was to evaluate the fracture resistance of 3 types of esthetic SSCs. Materials and Methods: Esthetic SSCs for first primary mandibular molars were cemented to idealized epoxy dies with glass ionomer cement. The die-crown units were fractured on a universal testing machine. The force was delivered by a stainless steel ball fixture, set in a uniaxial lever to replicate a cusp contact, with a crosshead speed of 1 mm/min. The differences among the 3 types of crown, in terms of force required to fracture, were compared statistically by 1-way analysis of variance. Pairwise comparisons were performed with Fisher's protected least significant difference test, at an overall significance level of 5%. Results: The force required to fracture, expressed as average ± standard error, did not differ significantly among the 3 brands of esthetic SSCs: 1730 N ± 50 N, 1826 N ± 62 N and 1671 N ± 68 N, respectively (p = 0.19), well below the maximum bite force of pediatric patients determined in a previous study. Conclusion: Esthetic SSCs should be able to resist occlusal forces over short clinical periods. However, long-term occlusal loading and fatigue failures should be taken into account when evaluating the success of this type of crown.

Original languageEnglish (US)
Article numberb90
JournalJournal (Canadian Dental Association)
Volume77
StatePublished - 2011

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Stainless Steel
Crowns
Esthetics
Bite Force
Pediatric Dentistry
Glass Ionomer Cements
Fatigue
Analysis of Variance
Pediatrics

ASJC Scopus subject areas

  • Dentistry(all)
  • Medicine(all)

Cite this

Fracture resistance of 3 types of primary esthetic stainless steel crowns. / Beattie, Sean; Taskonak, Burak; Jones, James; Chin, Judith; Sanders, Brian; Tomlin, Angela; Weddell, James.

In: Journal (Canadian Dental Association), Vol. 77, b90, 2011.

Research output: Contribution to journalArticle

Beattie, Sean ; Taskonak, Burak ; Jones, James ; Chin, Judith ; Sanders, Brian ; Tomlin, Angela ; Weddell, James. / Fracture resistance of 3 types of primary esthetic stainless steel crowns. In: Journal (Canadian Dental Association). 2011 ; Vol. 77.
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