Volume 19 Issue 7
Jul.  2021
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Article Navigation >  Chinese Journal of General Practice  > 2021  >  19(7): 1111-1113,1209
YANG Fan, LU Xiao-miao, LIU Fang, LIAO Sheng-kai. Effect of different binders on bond strength and durability of fibre post[J]. Chinese Journal of General Practice, 2021, 19(7): 1111-1113,1209. doi: 10.16766/j.cnki.issn.1674-4152.001997
Citation: YANG Fan, LU Xiao-miao, LIU Fang, LIAO Sheng-kai. Effect of different binders on bond strength and durability of fibre post[J]. Chinese Journal of General Practice, 2021, 19(7): 1111-1113,1209. doi: 10.16766/j.cnki.issn.1674-4152.001997
shu

Effect of different binders on bond strength and durability of fibre post

doi: 10.16766/j.cnki.issn.1674-4152.001997
  • 1.

    Department of Stomatology, the First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui 233004, China

Funds:

 KJ2018A1005

  • Received Date: 2020-07-26
    Available Online: 2022-02-16
    Abstract
  •   Objective  To discuss the influence of different resin binders on bond strength of fibre pile under different conditions.  Methods  Total 160 single-canal premolars that needed to be extracted for orthodontic treatment in the Department of Stomatology of the First Affiliated Hospital of Bengbu Medical College from July 2018 to December 2019 were selected as the research objects. After completing root canal therapy, root canal preparation was followed by cold pressure filling. Then, post-canal preparation was conducted and then divided into four A, B, C, D groups according to the random number table method (with 40 pieces in each group). Each group was treated with different binder. Group A was bonded with the sixth generation of Kelloli binder, group B was bonded with the eighth generation of 3M binder, group C was bonded with the eighth generation of BISCO binder, and group D was bonded with the eighth generation of Kerr binder. A 1-mm-thick segment of each tooth was cut in the root neck with a low-speed diamond cutting machine perpendicular to the tooth's long axis, which was used as the experimental specimen. Each group was divided into two groups, namely, the experimental group and the hot and cold cycle experimental group (with 20 pieces in each group). Under different conditions, the influence of different binders on the bond strength was tested and recorded. Finally, the fracture of the specimen was observed under a microscope.  Results  Statistically significant differences were observed in the bond degree of the four kinds of binders in the sheet pull-out test (F=110.854, P < 0.001). Amongst them, the bond degree of group D [(28.04±3.18) MPa] was the largest, and that of group A [(15.15±2.62) MPa] was the lowest. Statistically significant differences were observed amongst the four kinds of adhesive bonding degree in the hot and cold cycle experiments (F=82.630, P < 0.001). Amongst them, the bond strength of group D was the highest [(24.12±2.47) MPa], and group A had the lowest bond strength [(14. 29±2.11) MPa], and there was no significant difference in the distribution of fracture mode among the four groups (χ2=2.906, 3.593, P=0.820, 0.731).  Conclusion  The bond strength of fibre piles varies significantly amongst different binders, and the eighth generation of Kerr binder has the highest bond strength.

     

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