J Korean Acad Conserv Dent.  2004 Mar;29(2):153-161. 10.5395/JKACD.2004.29.2.153.

Effect of rewetting agent on dentinal microtensile bond strength

• Kang HY
• Cho YG
• Kim JU
• Park BC
• Yoo SH
• Jin CH
• Choi HY
• Ki YJ

• KMID: 1987089
• DOI: http://doi.org/10.5395/JKACD.2004.29.2.153

Abstract

This study investigated that the effect of rewetting agent on dentinal microtensile bond strength (microTBS). Human molars were sectioned to expose the superficial dentin surfaces. Samples were divided into two groups according to type of adhesives-Single Bond (S) and One-Step (O)], and again subdivided into five groups by different dentin surface treatment-dry for 15s (D), blot dry (BD) or dry for 15s, and rewet with different rewetting agents [distilled water (DW), Gluma Desensitizer (GD) and Aqua-Prep (AP)] for 30s. After application of adhesive, composite resin was built up on the bonding surface. Each tooth was sectioned to obtain stick with 1 mm2 cross sectional area and the microTBS was determined by EZ test. In the S group, the mean microTBS of GD, AP and BD group was significantly higher than that of DW and D group (p < 0.05). In the O group, the mean microTBS of AP, GD, BD and DW group was significantly higher than that of D group (p < 0.05). The data suggested that Gluma Desensitizer and Aqua-Prep could be successfully used as rewetting agents, and Distilled water could be acceptable in aceton based adhesive system only.

Keyword

Microtensile bond strength; One-bottle adhesive; Rewetting agent; Distilled water; Gluma Desensitizer; Aqua-Prep

MeSH Terms

Adhesives
Dentin*
Humans
Molar
Tooth
Water
Adhesives
Water

Figure

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  Figure 1 Specimen adhered to the testing apparatus

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  Figure 2 EZ test for microtensile bond strength test

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  Figure 3 Microtensile bond strength (MPa) of each group according to adhesives and dentin surface treatment

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