A comparative study of shear bond strength of two adhesive liners to nanocomposite

*, Suprabha BS and *, Bhargavi Simi (2012) A comparative study of shear bond strength of two adhesive liners to nanocomposite. Journal of Interdisciplinary Dentistry, 2 (3). pp. 170-173. ISSN 2229-5194


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Aim: To compare the shear bond strength of resin‑modified glass ionomer and nano‑filled flowable composite liners to nanocomposite restorative material. Materials and Methods: In this in vitro study, 24 specimens were prepared in acrylic blocks for the study with 12 in each group. Group I consisted of resin‑modified glass ionomer liner (GC Fuji II LC Improved) bonded to a cylinder of nanocomposite (Z350 Universal Restorative) whereas in Group II flowable composite liner (Filtek Z350 Flowable Restorative) was bonded to a cylinder of nanocomposite (Z350 Universal Restorative). Shear bond strength was determined using Instron Universal testing machine. Student’s independent sample t test was used for analysis. Results: The mean shear bond strength value of Group I was greater than Group II and the difference was statistically significant (P = 0.001). Conclusion: Resin‑modified glass ionomer appears to be a more compatible liner under nanocomposite restoration than flowable composite as it exhibited significantly higher shear bond strength. CLINICAL RELEVANCE TO INTERDISCIPLINARY DENTISTRY • Resin‑modified glass ionomer and flowable composites have been used as liners under resin composite restorations in both primary and permanent teeth to compensate for their polymerization shrinkage. • Adequate bonding of liners to composites is as important as bonding to dentin for the success of this technique. • Bonding of resin‑modified glass ionomer liner to nanocomposite restorative material is better than flowable composite liner and hence should be preferred over flowable composite as a liner.

Item Type: Article
Uncontrolled Keywords: Bond strength, cavity liner, nanocomposite
Subjects: Dentistry > MCODS Mangalore > Pedodontics
Depositing User: KMCMLR User
Date Deposited: 21 Jun 2013 06:24
Last Modified: 21 Jun 2013 06:24
URI: http://eprints.manipal.edu/id/eprint/136347

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