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Original Research

Open Access

Effect of Heat and Sonic Vibration on Penetration of a Flowable Resin Composite Used as a Pit and Fissure Sealant

  • Hae-Jung Kim1
  • Hyung-Jun Choi2
  • Ki-Yeol Kim3
  • Kwang-Mahn Kim1,*,

1Department and Research Institute of Dental Biomaterials and Bioengineering, College of Dentistry,Yonsei University, Seoul, Korea

2Department of Pediatric Dentistry, College of Dentistry,,Yonsei University, Seoul, Korea

3College of Dentistry,Yonsei University, Seoul, Korea

DOI: 10.17796/1053-4625-44.1.7 Vol.44,Issue 1,January 2020 pp.41-46

Published: 01 January 2020

*Corresponding Author(s): Kwang-Mahn Kim E-mail:


Objective: To evaluate penetration of a flowable resin composite into fissures using three different application methods: (1) conventional, (2) heat, and (3) sonic vibration. Study design: Forty-five sound maxillary third molars were divided randomly into three groups (n=15 per group). The occlusal surfaces of the teeth were etched and flowable resin composites were applied into the fissure using the assigned application method. The crowns were sectioned and examined with an optical microscope to assess penetration. In addition, three-point flexural strength was analyzed. Results: The sonic vibration group exhibited significantly greater penetration into the fissure compared with the other test groups (p<0.001). The heat group exhibited greater penetration into the fissure compared with the conventional group (p=0.003). However, three-point flexural strength was similar among all groups (p>0.05). Conclusions: Sonic vibration and heat increased penetration into fissures. Notably, sonic vibration exhibited the greatest penetration. We found that the application method did not influence the three-point flexural strength.


Pit and fissure sealant; Penetration; Sonic vibration; Heat

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Hae-Jung Kim,Hyung-Jun Choi,Ki-Yeol Kim,Kwang-Mahn Kim. Effect of Heat and Sonic Vibration on Penetration of a Flowable Resin Composite Used as a Pit and Fissure Sealant. Journal of Clinical Pediatric Dentistry. 2020. 44(1);41-46.


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