J Korean Acad Conserv Dent.  2005 Nov;30(6):435-441. 10.5395/JKACD.2005.30.6.435.

Effect of increasing application time of single bottle adhesives to microtensile bond strength of dried dentin

• Kim HG
• Kim DJ
• Hwang YC
• Oh W
• Hwang IN

• KMID: 2175745
• DOI: http://doi.org/10.5395/JKACD.2005.30.6.435

Abstract

The purpose of this study was to evaluate the effect of increasing application time of single bottle adhesives (SBA) to microtensile bond strength (MTBS) of dried dentin. To expose the superficial dentin surfaces, human molars were sectioned perpendicular to the long axis of tooth. 32% phosphoric acid gels were applied for 15s and rinsed. The teeth were randomly assigned to 3 groups ; S group (Single Bond), O group (One-Step), P group (Prime & Bond NT). Each group was divided to 3 subgroups (W: dentin wipe with wet gauge and light cured immediately, D: dentin dried for 30s and light cured immediately, 30: dentin dried for 30s and light cured after applying SBA for 30s). Composite resin was built up on the dentin surface and sectioned to obtain 20 specimens with 1 mm2 cross sectional area and the MTBS was measured. For Single Bond, the mean MTBS of S-W and S-30 group were higher than that of S-D group statistically (P < 0.05). For One-Step, the mean MTBS of O-D group was statistically lower than that of O-W group (P < 0.05). For Prime & Bond NT, the mean MTBS of P-30 group was statistically lower than that of P-D group (P < 0.05).

Keyword

Microtensile bond strength; Dried dentin; Application time; Single Bond; One-Step; Prime & Bond NT

MeSH Terms

Adhesives*
Axis, Cervical Vertebra
Dentin*
Gels
Humans
Molar
Tooth
Adhesives
Gels

Figure

• 

  Figure 1 Microtensile bond strength (MPa) of each group.

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