European Archives of Paediatric Dentistry

, Volume 17, Issue 5, pp 377–380 | Cite as

Shear bond strength of composite resin bonded to preformed metal crowns for primary molars using a universal adhesive and two different surface treatments: an in vitro study

  • S. S. PatilEmail author
  • U. R. Kontham
  • A. Kamath
  • R. Kontham
Original Scientific Article



This was to determine the shear bond strength of composite resin bonded to preformed metal crowns with a new adhesive. Buccal surfaces of the crowns were roughened by two different methods to increase retention.


Typodont mandibular second primary molars (38) were divided into two groups (19 per group). Preformed metal crowns were cemented to the teeth with glass-ionomer cement. To enhance retention, buccal surfaces of the crowns in group I were roughened with cross-cut carbide burs (SS White #56); crowns in group II were sandblasted (aluminium oxide, 50 µm). Scotchbond Universal Adhesive (3 M-ESPE) was used to bond composite resin to the crowns. A universal testing machine tested the maximum shearing force withstood by the veneered composite surfaces.


Sandblasted crowns demonstrated significantly higher resistance (p = 0.001) to shearing force (324.4 N) than did the crowns that were roughened with a bur (234.2 N).


Chairside veneering of composite resin to pretreated crowns could be a feasible, aesthetically pleasing, and an economical option in paediatric dentistry.


Adhesive Preformed metal crown Primary molar Veneer 


Compliance with ethical standards


The present study was not funded.

Ethical approval

This article does not contain any studies with human participants or animal participants performed by any of the authors.

Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© European Academy of Paediatric Dentistry 2016

Authors and Affiliations

  • S. S. Patil
    • 1
    Email author
  • U. R. Kontham
    • 1
  • A. Kamath
    • 1
  • R. Kontham
    • 2
  1. 1.Department of PedodonticsDr. D. Y. Patil Dental College and HospitalPimpri, PuneIndia
  2. 2.Department of OrthodonticsNair Hospital Dental CollegeMumbaiIndia

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