Effect of Layering Technique on Push-Out Bond Strength of Composite Resin to Intracanal Dentin of Primary Anterior Teeth

  • Zohreh Estaki Postgraduate student, Department of Pediatric Dentistry, School of Dentistry, Tehran University of Medical Sciences
  • Hossein Afshar Professor, Department of Pediatric Dentistry, School of Dentistry, Tehran University of Medical Sciences
  • Sara Ghadimi Laser Research Center of Dentistry, Dental Research Institute, Department of Pediatric Dentistry, School of Dentistry, Tehran University of Medical Sciences
  • Samira Derakhshan Assistant professor, Department of Oral & Maxillofacial Pathology, School of Dentistry, Tehran University of Medical Sciences
Keywords: Composite Resins; Deciduous Teeth; Dentin

Abstract

Objectives: This in-vitro study aimed to compare the push-out bond strength of composite resin posts packed into the root canal of primary anterior teeth using two different layering techniques. Materials and Methods: Thirty-two primary anterior teeth were randomly divided into two groups. In group 1, after the preparation of post spaces, a posterior composite resin (Filtek P60) was packed in three horizontal layers by a composite condenser instrument with a cylindrical tip using the horizontal layering technique (HLT). In group 2, this was done using a condenser with a conical tip in three funnel-shaped layers according to the funnel-shaped layering technique (FSLT). Next, the specimens were subjected to push-out bond strength testing. Data were analyzed using t-test and the Kaplan-Meier curves. Results: The mean±standard deviation (SD) bond strengths of composite resin posts were 8.46±3.45 MPa and 7.7±2.24 MPa for the HLT and FSLT, respectively; the difference was not statistically significant (P=0.46). Conclusions: The layering technique by which composite resin was packed into the root canal of primary anterior teeth (HLT versus FSLT) had no significant effect on the push-out bond strength of composite resin posts. Key words: Composite Resins; Deciduous Teeth; Dentin

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Published
2018-10-10
How to Cite
1.
Estaki Z, Afshar H, Ghadimi S, Derakhshan S. Effect of Layering Technique on Push-Out Bond Strength of Composite Resin to Intracanal Dentin of Primary Anterior Teeth. jdt. 15(5):300-8.
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Original Article(s)