Journal of Oral Science Research ›› 2017, Vol. 33 ›› Issue (5): 467-470.DOI: 10.13701/j.cnki.kqyxyj.2017.05.001

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Influence of Various Self-etch Adhesives on Interfacial Integrity Restored with Flowable Resin Composite.

CAO Pei-lin, ZHANG Lei, PAN Yi-Sha, LIU Qiang, CHEN Rui-tian, CHEN Zhi*.   

  1. School and Hospital of Stomatology, Wuhan University, Wuhan 430079, China.
  • Received:2017-03-22 Online:2017-05-20 Published:2017-05-26

Abstract: Objective: To compare the influence of various self-etch adhesives on interfacial integrity restored with flowable resin composite. Methods: Forty-two extracted intact human third molars were selected and cavities of 2mm*2mm*2mm were prepared on the occlusal surface of the teeth. The prepared teeth were randomly divided into seven groups and treated with different self-etch adhesives: Group A (SE Bond), Group B (Liner Bond F), Group C (SE Protect), Group D (SE Bond 2), Group E (SE One), Group F (S3 Bond), and Group G (Universal Bond Kit). All of the teeth were restored with flowable resin composite and were light-cured for 20s. Acoustic emission (AE) events were recorded when the light-curing started, and last for totally 2000s during and after light-curing time. The interfacial integrity was detected by optical coherence tomography (OCT). Results: The cumulative AE number increased rapidly in the early time period until 150s. The AE number of Group E was the lowest, while the AE number of Group B was the highest. However, there were no significant differences among all groups. The percentage of interfacial debonding in Group E was the lowest. The percentages of interfacial debonding calculated by OCT were not significantly different in all groups. Conclusion: AE technology and OCT were effective methods to detect tooth-composite interfacial integrity. The interfacial integrity showed no significant difference between one-step and two-step self-etch adhesives.

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