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


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.



Vargas CM, Ronzio CR. Disparities in Early Childhood Caries. BMC Oral Health. 2006;6(Suppl 1):S3.

AAPD. Policy on Early Childhood Caries (ECC): Unique Challenges and Treatment Options. 2014;37:53-5.

Collado V, Pichot H, Delfosse C. Impact of early childhood caries and its treatment under general anesthesia on orofacial function and quality of life: A prospective comparative study. Med Oral Patol Oral Cir Bucal. 2017;22(3):e333-41.

AAPD. Guidline on restorative dentistry 2017.

Waggoner WF. restoring primary anterior teeth. Pediatr Dent. 2002;24(5):511-16.

Judd PL, Kenny DJ, Johnston DH, Yacobi R. Composite resin short-post technique for primary anterior teeth. J Am Dent Assoc. 1990;120(5):553-5.

Nikolaenko SA, Lohbauer U, Roggendorf M, Petschelt A, Dasch W, Frankenberger R. Influence of c-factor and layering technique on microtensile bond strength to dentin. Dent Mater. 2004;20(6):579-85.

Heymann HO, Jr EJS, Ritter AV. Sturdevant's Art and Science of Operative Dentistry. 13 ed: Elsevier; 2013. p. 261-3.

Niu Y, Ma X, Fan M, Zhu S. Effects of layering techniques on the micro-tensile bond strength to dentin in resin composite restorations. Dent Mater. 2009;25(1):129-34.

Mosharrafian S, Afshar H, Farbod M, Baniameri Z. Effect of Etching Time and Preparation on Push-Out Bond Strength of Composite to Intracanal Dentin of Primary Anterior Teeth. J Dent. 2016;13(5).

Bitter K, Meyer-Lueckel H, Priehn K, Kanjuparambil JP, Neumann K, Kielbassa AM. Effects of luting agent and thermocycling on bond strengths to root canal dentine. Int Endod J. 2006;39(10):809-18.

Soares CJ, Santana FR, Castro CG, Santos-Filho PC, Soares PV, Qian F, et al. Finite element analysis and bond strength of a glass post to intraradicular dentin: comparison between microtensile and push-out tests. Dent Mater. 2008;24(10):1405-11.

Memarpour M, Shafiei F, Abbaszadeh M. Retentive strength of different intracanal posts in restorations of anterior primary teeth: an in vitro study. Restor Dent Endod. 2013;38(4):215-21.

Sirisha K, Rambabu T, Shankar YR, Ravikumar P. Validity of bond strength tests: A critical review: Part I. J Conserv Dent. 2014;17(4):305-11.

Sardella TN, de Castro FL, Sanabe ME, Hebling J. Shortening of primary dentin etching time and its implication on bond strength. J Dent. 2005;33(5):355-62.

Osorio R, Aguilera FS, Otero PR, Romero M, Osorio E, Garcia-Godoy F, et al. Primary dentin etching time, bond strength and ultra-structure characterization of dentin surfaces. J Dent. 2010;38(3):222-31.

Oskoee PA, Navamipour EJ, Oskoee SS, Bahari M, Pournaghiazar F. Effect of different adhesion strategies on push- out bond strength of fiber reinforced composite posts. African journal of Biotechnology. 2011;10(76):17593- 8.

Erdemir U, Mumcu E, Topcu FT, Yildiz E, Yamanel K, Akyol M. Micro push-out bond strengths of 2 fiber post types luted using different adhesive strategies. Oral Surg Oral Med Oral Pathol Oral Radiol Endod.110(4):534-44.

Oskoee SS, Bahari M, Kimyai S, Asgary S, Katebi K. Push-out Bond Strength of Fiber Posts to Intraradicular Dentin Using Multimode Adhesive System. J Endod. 2016;42(12):1794-8.

da Silveira-Pedrosa DM, Martins LR, Sinhoreti MA, Correr-Sobrinho L, Sousa-Neto MD, Costa EDJ, et al. Push-out Bond Strength of Glass Fiber Posts Cemented in Weakened Roots with Different Luting Agents. J Contemp Dent Pract. 2016;17(2):119-24.

Kahnamouei MA, Mohammadi N, Navimipour EJ, Shakerifar M. Push-out bond strength of quartz fibre posts to root canal dentin using total-etch and self-adhesive resin cements. Med Oral Patol Oral Cir Bucal. 2012;17(2):e337-44.

Uekusa S, Yamaguchi K, Miyazaki M, Tsubota K, Kurokawa H, Hosoya Y. Bonding Efficacy of Single-step Self-etch Systems to Sound Primary and Permanent Tooth Dentin. Oper Dent. 2006;31(5):569-76.

McCabe JF, Walls AWG. Applied Dental Materials. Ninth Edition ed2008. p. 207-8.

Afshar H, Baradaran Nakhjavani Y, Rahro Taban S, Baniameri Z, Nahvi A. Bond Strength of 5(th), 6(th) and 7(th) Generation Bonding Agents to Intracanal Dentin of Primary Teeth. J Dent (Tehran). 2015;12(2):90-8.

Mosharrafian S, Sharifi Z. Comparison of Push-Out Bond Strength of Two Bulk-Fill and One Conventional Composite to Intracanal Dentin in Severely Damaged Primary Anterior Teeth. J Dent (Tehran). 2016;13(3):207-14.

Berkovitz BKB, Holland GR, Moxham BJ. Oral Anatomy, Histology and Embryology: Mosby/Elsevier; 2009.

Baghdadi ZD. Bond strengths of Dyract AP compomer material to dentin of permanent and primary molars: phosphoric acid versus non-rinse conditioner. J Dent Child (Chic). 2003;70(2):145-52.

de Araujo FB, Garcia-Godoy F, Issao M. A comparison of three resin bonding agents to primary tooth dentin. Pediatr Dent. 1997;19(4):253-7.

How to Cite
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. Front Dent. 15(5):300-308.
Original Article