Chinese Journal of Tissue Engineering Research ›› 2012, Vol. 16 ›› Issue (43): 8037-8040.doi: 10.3969/j.issn.2095-4344.2012.43.013

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Effect of polyurethane binder with catalyst on the enamel-porcelain adhesive property

Chen Xiang-tao1, Wang Zhi-xia2, Chen Lin2, Yue Chang-jun2, Wang Jia-qi2   

  1. 1Department of Prosthodontics, the Second Affiliated Hospital (Stomatological Hospital) of Jiamusi University, Jiamusi 154002, Heilongjiang Province, China
    2Jiamusi University, Jiamusi 154002, Heilongjiang Province, China
  • Received:2012-01-11 Revised:2012-03-13 Online:2012-10-21 Published:2012-10-21
  • About author:Chen Xiang-tao, Master’s supervisor, Professor, Department of Prosthodontics, the Second Affiliated Hospital (Stomatological Hospital) of Jiamusi University, Jiamusi 154002, Heilongjiang Province, China chengxiangtao0298@163.com

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Abstract:

BACKGROUND: Although polyurethane binder has a strong cohesive force, the cohre conditions do not comply with the basic conditions used in oral adhesive.
OBJECTIVE: To observe the effect of catalyst on the performance of polyurethane binder.
METHODS: Freshly extracted 20 non-carious human premolars or anterior teeth were collected to prepare flat mesial and distal enamel bonding interface with diamond bur. Totally 40 ceramic discs (3 mm in diameter, 3 mm in height) were fabricated, and then cemented on enamel bonding interface. These teeth and ceramic discs were evenly divided into four groups: stannous octoate binder group (polyurethane binder+stannous octoate), pentamethyldie thylenetriamine group (polyurethane binder+pentamethyldie thylenetriamine), the pure polyurethane binder group and Panaviya F adhesive group.
RESULTS AND CONCLUSION: Adhesive strength of the stannous octoate binder group was the biggest, and that of the pentamethyldie thylenetriamine and pure polyurethane binder groups were smaller, while that of the Panaviya F adhesive group was the minimum. Adhesive strength of stannous octoate binder group, pentamethyldie thylenetriamine group and pure polyurethane binder group were all higher than that of the Panaviya F adhesive group (P < 0.05). Besides, the addition of stannous octoate and pentamethyldie thylenetriamine group shortened the solidification time. These findings suggest that catalyst can effectively shorten the solidification time of the polyurethane binder, and improve the adhesive strength of the polyurethane binder.

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