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European Archives of Paediatric Dentistry

, Volume 20, Issue 1, pp 47–51 | Cite as

Microshear bond strength of different restorative materials to teeth with molar-incisor-hypomineralisation (MIH): a pilot study

  • M. ArabEmail author
  • E. Al-Sarraf
  • M. Al-Shammari
  • M. Qudeimat
Original Scientific Article

Abstract

Aim

To compare the microshear bond strength of resin based composite (RBC) and resin modified glass ionomer cement (RMGIC) restorations when bonded to teeth with molar incisor hypomineralisation (MIH).

Methods

Eleven first permanent molars with MIH were included in this study. Teeth were sectioned mesio-distally producing a total of 22 surfaces for testing. Each specimen was placed inside a plastic ring with the flattened surface in contact with a glass slab. The plastic ring was filled with autopolymerising acrylic resin to imbed the specimen leaving the enamel surface exposed. Each surface was then bonded to 0.96 mm diameter RBC and light cured RMGIC following the manufacturers’ instructions. Microshear bond testing was performed after 24 h storage in distilled water at 37 °C. A Bisco shear tester was used to apply shear stress of 1 mm/min until failure. Wilcoxon signed-rank paired-test was used for comparison of bond strength values.

Results

Microshear bond strength of RBC (30.80 ± 8.19 MPa) was significantly higher than that of RMGIC (11.13 ± 6.91 MPa) when bonded to hypomineralised permanent first molars (p < 0.001).

Conclusion

The microshear bond strength of RBC is significantly higher than that of RMGIC when bonded to MIH affected teeth. Therefore, RBC can be recommended as the restoration of choice for teeth with MIH whenever the clinical scenario allows.

Keywords

Molar incisor hypomineralisation Enamel Bond strength Resin composite Resin modified glass ionomer 

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Copyright information

© European Academy of Paediatric Dentistry 2018

Authors and Affiliations

  1. 1.1Ministry of Health, Al-Ahmadi GovernorateSafatKuwait
  2. 2.Department of Restorative Sciences, Faculty of DentistryKuwait UniversityKuwaitKuwait
  3. 3.Department of Developmental and Preventive Sciences, Faculty of DentistryKuwait UniversityKuwaitKuwait

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