[A study on the bonding properties of four resin cements].

Abstract

OBJECTIVE:

To evaluate the dentin and enamel bonding strength and resin-dentin interfaces of four resin cements.

METHODS:

Twenty-four sound freshly extracted molars were sectioned with low-speed saw under running water. Two mesial-distal enamel disc and two buccal-lingual dentin discs were sectioned from each molar. Four resin cements (A group: Panavia(TM) F; B group: RelyX(TM) ARC; C group: RelyX(TM) Unicem; D group: Clearfil(TM) SA Cement) were applied to the surface of these enamel and dentin discs according to manufacturers' guidance. The bonded specimen were prepared for shear bond strength test and sectioned occluso-gingivally into two slabs for scanning electron microscopy (SEM) observation.

RESULTS:

The bonding strength between resin and enamel in B group [(29.38 ± 6.28) MPa] was higher than that in D group [(27.25 ± 7.03) MPa], and both of them were significantly higher than those in A [(22.92 ± 7.13) MPa] and C group [(10.92 ± 3.41) MPa] (P < 0.05). The highest dentin bonding strength was shown in B group [(27.28 ± 6.79) MPa], followed by A [(14.23 ± 6.39) MPa], D [(10.09 ± 3.26) MPa] and C group [(6.43 ± 1.60) MPa, P < 0.05].

CONCLUSIONS:

The four resin cements have different enamel or dentin bonding properties.

• Authors: San-Jun Zhao, Jian-Wei Sun, Ji-Hua Chen
• Journal: Zhonghua kou qiang yi xue za zhi = Zhonghua kouqiang yixue zazhi = Chinese journal of stomatology (Zhonghua Kou Qiang Yi Xue Za Zhi) Vol. 46 Issue 1 Pg. 38-41 (Jan 2011) ISSN: 1002-0098 [Print] China
• PMID: 21418945 (Publication Type: Comparative Study, Journal Article)

Chemical References

• Clearfil SA
• Dentin-Bonding Agents
• Panavia-Fluoro
• Polymethacrylic Acids
• Rely X Unicem
• RelyX ARC
• Resin Cements
• Polyethylene Glycols
• Bisphenol A-Glycidyl Methacrylate

Topics

• Bisphenol A-Glycidyl Methacrylate (chemistry)
• Dental Bonding
• Dental Enamel (ultrastructure)
• Dental Stress Analysis
• Dentin (ultrastructure)
• Dentin-Bonding Agents (chemistry)
• Humans
• Microscopy, Electrochemical, Scanning
• Molar
• Polyethylene Glycols (chemistry)
• Polymethacrylic Acids (chemistry)
• Resin Cements (chemistry)
• Shear Strength