Abstract
Objective: The purpose of this study was to investigate if incremental-filling technique and cavity size would affect the bond strength of resin composite. Methods: Two sizes of Class I cavities were prepared in bovine dentin (large cavities: π × (5/2)2 × 5 mm3; small cavity: π × (3/2)2 × 3 mm3). Light-cure resin composite (Clearfil Photocore) with a self-etching primer adhesive (Clearfil SE Bond) was placed into the cavities by bulk filling (C-factor = 5) or incremental filling (two layers, C-factor = 3) and light-cured. As a control, 3 or 5 mm thick resin composite was bonded to the flat dentin surface. After 24 h storage in 37 °C water, the micro-tensile bond strength was measured at a crosshead speed of 1 mm/min. The results obtained were statistically analyzed using two-way ANOVA and t-test at a significance level of P = 0.05. Results: The results obtained showed that there was no significant difference among the filling techniques in small cavities (P > 0.05). However, in large cavities, bulk filling presented the lowest bond strength (P < 0.05). Significance: Not only the filling technique affected the bonding strength to the cavity floor, but the cavity size was also an influential factor in Class I cavities.
| Original language | English |
|---|---|
| Pages (from-to) | 533-538 |
| Number of pages | 6 |
| Journal | Dental Materials |
| Volume | 23 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - Apr 2007 |
| Externally published | Yes |
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Keywords
- C-factor
- Cavity size
- Incremental technique
- Micro-tensile bond strength
- Self-etching primer
ASJC Scopus subject areas
- Dentistry(all)
Cite this
The effects of cavity size and incremental technique on micro-tensile bond strength of resin composite in Class I cavities. / He, Zhengdi; Shimada, Yasushi; Tagami, Junji.
In: Dental Materials, Vol. 23, No. 5, 04.2007, p. 533-538.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The effects of cavity size and incremental technique on micro-tensile bond strength of resin composite in Class I cavities
AU - He, Zhengdi
AU - Shimada, Yasushi
AU - Tagami, Junji
PY - 2007/4
Y1 - 2007/4
N2 - Objective: The purpose of this study was to investigate if incremental-filling technique and cavity size would affect the bond strength of resin composite. Methods: Two sizes of Class I cavities were prepared in bovine dentin (large cavities: π × (5/2)2 × 5 mm3; small cavity: π × (3/2)2 × 3 mm3). Light-cure resin composite (Clearfil Photocore) with a self-etching primer adhesive (Clearfil SE Bond) was placed into the cavities by bulk filling (C-factor = 5) or incremental filling (two layers, C-factor = 3) and light-cured. As a control, 3 or 5 mm thick resin composite was bonded to the flat dentin surface. After 24 h storage in 37 °C water, the micro-tensile bond strength was measured at a crosshead speed of 1 mm/min. The results obtained were statistically analyzed using two-way ANOVA and t-test at a significance level of P = 0.05. Results: The results obtained showed that there was no significant difference among the filling techniques in small cavities (P > 0.05). However, in large cavities, bulk filling presented the lowest bond strength (P < 0.05). Significance: Not only the filling technique affected the bonding strength to the cavity floor, but the cavity size was also an influential factor in Class I cavities.
AB - Objective: The purpose of this study was to investigate if incremental-filling technique and cavity size would affect the bond strength of resin composite. Methods: Two sizes of Class I cavities were prepared in bovine dentin (large cavities: π × (5/2)2 × 5 mm3; small cavity: π × (3/2)2 × 3 mm3). Light-cure resin composite (Clearfil Photocore) with a self-etching primer adhesive (Clearfil SE Bond) was placed into the cavities by bulk filling (C-factor = 5) or incremental filling (two layers, C-factor = 3) and light-cured. As a control, 3 or 5 mm thick resin composite was bonded to the flat dentin surface. After 24 h storage in 37 °C water, the micro-tensile bond strength was measured at a crosshead speed of 1 mm/min. The results obtained were statistically analyzed using two-way ANOVA and t-test at a significance level of P = 0.05. Results: The results obtained showed that there was no significant difference among the filling techniques in small cavities (P > 0.05). However, in large cavities, bulk filling presented the lowest bond strength (P < 0.05). Significance: Not only the filling technique affected the bonding strength to the cavity floor, but the cavity size was also an influential factor in Class I cavities.
KW - C-factor
KW - Cavity size
KW - Incremental technique
KW - Micro-tensile bond strength
KW - Self-etching primer
UR - http://www.scopus.com/inward/record.url?scp=33947194030&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33947194030&partnerID=8YFLogxK
U2 - 10.1016/j.dental.2006.03.012
DO - 10.1016/j.dental.2006.03.012
M3 - Article
C2 - 16725190
AN - SCOPUS:33947194030
VL - 23
SP - 533
EP - 538
JO - Dental Materials
JF - Dental Materials
SN - 0109-5641
IS - 5
ER -