The effects of cavity size and filling method on the bonding to class i cavities

Zhengdi He, Yasushi Shimada, Alireza Sadr, Masaomi Ikeda, Junji Tagami

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Purpose: The effects of incremental filling technique and flowable liner on the bond strength of resin composite in different sized cavities were investigated in this study. Materials and Methods: Two sizes of cylindrical Class I cavities were prepared in bovine dentin (98.1 mm3 and 21.2 mm3). A light-curing resin composite (Clearfil Photocore) with a self-etching primer adhesive (Clearfil SE Bond) was used to bulk fill the cavities (C-factor 5), with and without flowable liner (Clearfil FLOW-FX) or incremental filling (2 layers, Cfactor 3). As control, a 3-mm or 5-mm buildup was placed on the flat dentin surface (C-factor 0.2). After 24 h storage in 37°C water, the microtensile bond strength was measured at a crosshead speed of 1 mm/min. Mode of failure in the fractured specimens was observed using a scanning electron microscope. The obtained results were statistically analyzed. Results: In large cavities, incrementally filled and lined cavities showed higher bond strength values than the bulk-filled subgroup (p < 0.05). However, in small cavities, neither the incremental technique nor flowable liner improved the bond strength. Conclusion: Not only the filling techniques but also the cavity size affected the bond strength to the cavity floor in cylindrical Class I cavities.

Original languageEnglish
Pages (from-to)447-453
Number of pages7
JournalJournal of Adhesive Dentistry
Volume10
Issue number6
DOIs
Publication statusPublished - 2008
Externally publishedYes

Fingerprint

Composite Resins
Dentin
Adhesives
Electrons
Light
Water
Clearfil SE Bond

Keywords

  • C-factor
  • Cavity size
  • Flowable liner
  • Incremental technique
  • Microtensile bond strength

ASJC Scopus subject areas

  • Medicine(all)

Cite this

The effects of cavity size and filling method on the bonding to class i cavities. / He, Zhengdi; Shimada, Yasushi; Sadr, Alireza; Ikeda, Masaomi; Tagami, Junji.

In: Journal of Adhesive Dentistry, Vol. 10, No. 6, 2008, p. 447-453.

Research output: Contribution to journalArticle

He, Zhengdi ; Shimada, Yasushi ; Sadr, Alireza ; Ikeda, Masaomi ; Tagami, Junji. / The effects of cavity size and filling method on the bonding to class i cavities. In: Journal of Adhesive Dentistry. 2008 ; Vol. 10, No. 6. pp. 447-453.
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