• Niger J Clin Pract · Jun 2021

    Nondestructive evaluation of microleakage in restored primary teeth using CP-OCT.

    • T A Bakhsh, S J Khan, H A Gharamah, E Alshoaibi, and A Turkistani.
    • Restorative Dentistry Department, Faculty of Dentistry, King Abdulaziz University, P.O. Box 80209, Jeddah 215-89; School of Dentistry, Alfarabi Private College, Jeddah; Dental Department, Doctor Samir Abbas Hospital, Jeddah 214-18, Saudi Arabia.
    • Niger J Clin Pract. 2021 Jun 1; 24 (6): 919-924.

    BackgroundAlthough the demand for esthetic filling of primary teeth with resin composite is increasing, there is no enough data on the adhesive performance of composite restorations in primary teeth. Despite the improvements in resin composites, interfacial gap is still a disadvantage as it may cause marginal staining, secondary caries, and restoration failure. Previous studies have validated the efficiency of optical coherence tomography (OCT) in the evaluation of adhesive interface in permanent teeth, but not in primary teeth.AimsThe aim of this study was to assess microleakage upon composite restorations in primary teeth using cross-polarization OCT (CP-OCT).MethodologyCylindrical class-V cavities were prepared in extracted human primary second molars and divided into four groups randomly. In groups 1 and 2, cavities were restored using Tetric N-Universal adhesive in the self-etch mode followed by IPS Impress Direct Composite and Ceram.x One Universal composite, respectively. In groups 3 and 4, one-step self-etch Prime and Bond Elect adhesive was used followed by ID composite and CX composite in groups 3 and 4, respectively. The specimens were then immersed in a contrasting solution followed by interfacial microleakage examination under CP-OCT. The recorded images were analyzed to quantify the mean gap percentages.ResultsAll tested groups showed variable degree of interfacial microleakage under composite restorations. Two-way ANOVA showed the composite factor was significantly influencing the results, unlike the adhesive. Group 1 and 2 had the lowest and highest mean gap percentage, respectively, which were significantly different from the other groups. Groups 3 and 4 were not significantly different.ConclusionBased on the current finding, a polymeric restorative system from the same manufacturer reduces the risk of interfacial microleakage in primary teeth.

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