Effect of post-retained composite restoration of MOD preparations on the fracture resistance of endodontically treated teeth

Roberto Sorrentino, Ziad Salameh, Fernando Zarone, Franklin Chi Meng Tay, Marco Ferrari

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

Purpose: The present study aimed to compare the fracture resistance and failure patterns of endodontically treated premolars with MOD preparations restored using different material combinations. The null hypothesis postulated that there was no association between the fracture resistance of endodontically treated premolars and the resin composite materials or the post-and-core system used to build up the restorations. Materials and Methods: Eighty single-rooted maxillary premolars were used. After endodontic treatment and preparation of MOD preparations, 8 groups of 10 samples each were created, using the following material combinations: group 1 (control), flowable and microhybrid resin composites; group 2, flowable A; group 3, flowable B; group 4, microhybrid resin A; group 5, microhybrid resin B; group 6, flowable B + microhybrid resin B; group 7, flowable A + microhybrid resin A + post A; group 8, flowable B + microhybrid resin B + post B. Mechanical static fracture tests were performed loading the specimens till fracture. Results: The mean failure loads (N) were 502 (control), 470 (group 7), 445 (group 8), 441 (group 6), 405 (group 5), 364 (group 4), 317 (group 2), and 302 (group 3). Statistically significant differences were found between groups 1 vs 2, 1 vs 3, and 3 vs 7 (p < 0.05). Conclusion: The fracture resistance of endodontically treated premolars with MOD preparations was enhanced by the use of the sandwich technique. The samples restored with posts predominantly showed restorable fractures, while teeth restored without posts mostly displayed unrestorable failures.

Original languageEnglish (US)
Pages (from-to)49-56
Number of pages8
JournalJournal of Adhesive Dentistry
Volume9
Issue number1
StatePublished - Mar 21 2007

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Nonvital Tooth
Bicuspid
Composite Resins
Tooth Fractures
Control Groups
Endodontics

Keywords

  • Composite
  • Fracture resistance
  • Post

ASJC Scopus subject areas

  • Orthodontics
  • Oral Surgery
  • Periodontics

Cite this

Effect of post-retained composite restoration of MOD preparations on the fracture resistance of endodontically treated teeth. / Sorrentino, Roberto; Salameh, Ziad; Zarone, Fernando; Tay, Franklin Chi Meng; Ferrari, Marco.

In: Journal of Adhesive Dentistry, Vol. 9, No. 1, 21.03.2007, p. 49-56.

Research output: Contribution to journalArticle

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