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Volume 9 Issue 1 (January, 2021)

Original Articles

Evaluation of orthodontic shear peel-band strength, adhesive remnants, site of bond failure and solubility of three commonly used cements when applied to pre-fabricated and customized bands- An in-vitro study
Varsha Merani, Rohan Pulgaonkar, Sandeep Jethe, Jayesh S. Rahalkar, Sonali Deshmukh, Shailesh Dongre

Aim: Compare mean retentive strength, site of band failure, adhesive remnants & solubility of three dental cements used for orthodontic banding. Materials and methods: Dual cure, GIC and zinc phosphate cement were tested. Ninety human premolar teeth were divided into two subgroups having 15 teeth each. Subgroup 1 was banded manually using stainless steel band material, subgroup 2 was banded with preformed bands. Buttons were welded to the buccal and lingual sides of the band for testing with universal testing machine to measure retentive strength. On band failure, visual assessment was made for amount of cement remaining on the tooth surface. Luting cements were evaluated for solubility at three different time intervals (1,3,7 days). Results: Dual cure cement had highest, zinc phosphate had lowest mean retentive strength. GIC bands failed at enamel-cement interface as compared to other groups. Dual cure cement shows less adhesive remnants on the tooth surface compared to other groups. Zinc phosphate showed highest solubility amongst the three groups at all three testing times. Conclusion: Dual cure cement showed highest retentive strength, least amount of cement remnants after debanding and least solubility followed by GIC and Zinc Phosphate cement respectively. Keywords: Shear-peel band strength, site of band failure, adhesive remnants, solubility.

 
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