Microshear bond strength of different restorative materials to teeth with molar-incisor-hypomineralisation (MIH): a pilot study
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).
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.
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).
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.
KeywordsMolar incisor hypomineralisation Enamel Bond strength Resin composite Resin modified glass ionomer
- dos Santos MPA, Maia LC. Molar incisor hypomineralization: morphological, aetiological, epidemiological and clinical considerations. In: Li DM-Y, editor. Contemporary approach to dental caries. InTech; 2012.Google Scholar
- Fayle SA. Molar incisor hypomineralisation: restorative management. Eur J Paediatr Dent. 2003;4(3):121–6.Google Scholar
- Garg N, Jain AK, Saha S, Singh J. Essentiality of early diagnosis of molar incisor hypomineralization in children and review of its clinical presentation, etiology and management. Int J Paediatr Dent. 2012;5(3):190–6.Google Scholar
- Kotsanos N, Kaklamanos EG, Arapostathis K. Treatment management of first permanent molars in children with Molar-Incisor hypomineralisation. Eur J Paediatr Dent. 2005;6(4):179–84.Google Scholar
- Lygidakis NA, Chaliasou A, Siounas G. Evaluation of composite restorations in hypomineralised permanent molars: a four year clinical study. Eur J Paediatr Dent. 2003;4(3):143–8.Google Scholar
- Mahoney EK. The treatment of localised hypoplastic and hypomineralised defects in first permanent molars. N Z Dent J. 2001;97(429):101–5.Google Scholar
- Sadashivamurthy P, Deshmukh S. Missing links of molar incisor hypomineralization: a review. J Int Oral Health. 2012;4(1):1–10.Google Scholar
- Wang H, Shimada Y, Tagami J. Shear bond stability of current adhesive systems to enamel. Oper Dent. 2004;29(2):168–75.Google Scholar
- Watanabe L, Marshall G, Marshall S (eds.). Variables influence on shear bond strength testing to dentin. Advanced adhesive dentistry, 3rd International Kuraray Symposium, vol. Granada International Symposium. Kuraray Co. Ltd; 1999, pp 75–90.Google Scholar
- Weerheijm KL, Duggal M, Mejare I et al. Judgement criteria for molar incisor hypomineralisation (MIH) in epidemiologic studies: a summary of the European meeting on MIH held in Athens, 2003. Eur J Paediatr Dent. 2003;4(3):110–3.Google Scholar
- William V, Burrow MF, Palamara JE, Messer LB. Microshear bond strength of resin composite to teeth affected by molar hypomineralization using 2 adhesive systems. Pediatr Dent. 2006a;28(3):233–41.Google Scholar
- William V, Messer LB, Burrow MF. Molar incisor hypomineralization: review and recommendations for clinical management. Pediatr Dent. 2006b;28(3):224–32.Google Scholar