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ORIGINAL RESEARCH Table of Contents   
Year : 2019  |  Volume : 30  |  Issue : 1  |  Page : 52-56
Influence of infiltrant application time on the reduction of opaqueness of proximal enamel caries

1 Health Sciences Center, Federal University of Paraiba, Cidade Universitária, 58051-900 João Pessoa, Paraiba, Brazil
2 Department of Morphology, Health Science Center, Federal University of Paraiba, Cidade Universitaria, 58051-900 João Pessoa, Paraiba, Brazil

Correspondence Address:
Prof. Frederico Barbosa de Sousa
Department of Morphology, Health Science Center, Federal University of Paraiba, Cidade Universitária, S/N, CEP 58051-900, João Pessoa, Paraíba
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ijdr.IJDR_267_17

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Introduction: Infiltrant resins were developed to hamper carious lesion progression and mask the whitish appearance of first evidence of caries. Objective: This study aimed at testing the hypothesis that a long application time of resin infiltrant in proximal enamel caries improves esthetic outcome compared to the commercially recommended time. Materials and Methods: Twenty teeth with uncavitated inactive proximal white enamel caries lesions (selected by two calibrated examiners; inter-examiner κ = 0.87) were divided into two groups (experimental and control group; n = 10) that agreed regarding lesion surface area. Lesions were infiltrated following the protocol recommended by the manufacturer (two applications, 3 min application first and another 1 min application later; control) and by the protocol tested in this study (one application of 30 min; experimental). Enamel opaqueness (esthetic outcome) was measured by a calibrated examiner (intra-class coefficient of 0.9) before and after infiltration using fluorescence microscopy. Results: Reduction of enamel opaqueness was significantly higher in the experimental group (40.0% ± 18.5%) than in the control group (18.6% ± 14.9%) (P = 0.0105, one-tailed t-test; Hedge's g of 1.28, 95% confidence interval of 0.43/2.13, and power of 86%). Conclusions: It can be concluded that the application time of 30 min provides a greater reduction in opaqueness of proximal enamel lesion compared to the application time recommended by the manufacturer. The high effect size could stimulate patients to comply with the treatment time.

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