Effects of cavity configuration on composite restoration

K. K. Choi, Jack Ferracane, G. J. Ryu, S. M. Choi, M. J. Lee, S. J. Park

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

This study evaluated the effects of various cavity configurations on the bond strength, microleakage, flexural strength and elastic modulus of a hybrid (Clearfil AP-X) and a microhybrid (Esthet-X) composite restorative. After the specimens were made with C-factors of less than 1, 2.4 and 3.4, flexural strength and elastic modulus were evaluated in three-point bending using a mechanical testing machine. Fragments of the fractured specimens were selected randomly and the fracture surfaces were examined in SEM. To evaluate the microtensile bond strength and microleakage of composite restorations in bovine cavities, C-factors (ratio of bonded to non-bonded cavity surface) were controlled as 1.0, 2.3, 3.0 and 3.7. All specimens were stored in distilled water at 37°C for 24 hours and tested in a universal testing machine (EZ Test, Shimadzu, Japan). For the microleakage test, teeth with restorations were stained with silver nitrate and examined by two examiners under a stereomicroscope at 40x magnification. The hybrid composite showed higher mechanical properties than the microhybrid composite. The flexural strength and elastic modulus of both composites decreased when polymerized under greater constraint, that is, with increasing C-factor. Mean microtensile bond strength to dentin was also decreased with increasing C-factor for both types of composites. Microleakage scores for the hybrid composite restorations were generally higher than the microhybrid composite.

Original languageEnglish (US)
Pages (from-to)462-469
Number of pages8
JournalOperative Dentistry
Volume29
Issue number4
StatePublished - Jul 2004

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Elastic Modulus
Silver Nitrate
Dentin
Tooth
Japan
Water

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Choi, K. K., Ferracane, J., Ryu, G. J., Choi, S. M., Lee, M. J., & Park, S. J. (2004). Effects of cavity configuration on composite restoration. Operative Dentistry, 29(4), 462-469.

Effects of cavity configuration on composite restoration. / Choi, K. K.; Ferracane, Jack; Ryu, G. J.; Choi, S. M.; Lee, M. J.; Park, S. J.

In: Operative Dentistry, Vol. 29, No. 4, 07.2004, p. 462-469.

Research output: Contribution to journalArticle

Choi, KK, Ferracane, J, Ryu, GJ, Choi, SM, Lee, MJ & Park, SJ 2004, 'Effects of cavity configuration on composite restoration', Operative Dentistry, vol. 29, no. 4, pp. 462-469.
Choi KK, Ferracane J, Ryu GJ, Choi SM, Lee MJ, Park SJ. Effects of cavity configuration on composite restoration. Operative Dentistry. 2004 Jul;29(4):462-469.
Choi, K. K. ; Ferracane, Jack ; Ryu, G. J. ; Choi, S. M. ; Lee, M. J. ; Park, S. J. / Effects of cavity configuration on composite restoration. In: Operative Dentistry. 2004 ; Vol. 29, No. 4. pp. 462-469.
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