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Biocompatibility Analysis of Chemomechanical Caries Removal Material Papacárie on Cultured Fibroblasts and Subcutaneous Tissue

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Chemomechanical caries removal allies an atraumatic technique with antimicrobiotic characteristics, minimizing painful stimuli and maximally preserving healthy dental structures. The purpose of this study was to compare the cytotoxic effects of papain-based gel (Papacarie) and another caries-removing substance, Carisolv, to a nontreatment control on cultured fibroblasts in vitro and the biocompatibility in subcutaneous tissue in vivo. The cytotoxicity analysis was performed on fibroblast cultures (NIH-3T3) after 0-, 4-, 8-, and 12-hour exposure (cell viability assay) and after 1-, 3-, 5-, and 7-day exposure (survival assay). In the in vivo study, the 2 compounds were introduced into polyethylene tubes that were implanted into subcutaneous tissues of rats. After 1, 7, 14, 30, and 60 days, tissue samples were examined histologically. Cell viability did not differ between the 2 experimental groups. The control group, however, showed significantly higher percentage viability. There were no differences in cell survival between the control and experimental groups. The histological analysis revealed a moderate inflammatory response at 2 and 7 days and a mild response at 15 days, becoming almost imperceptible by 30 and 60 days in both experimental groups. The 2 tested substances exhibited acceptable biocompatibilities and demonstrated similar responses in the in vitro cytotoxicity and in vivo implantation assay.
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Keywords: BIOCOMPATIBILITY; CELL CULTURE; CHEMOMECHANICAL CARIES REMOVAL; CYTOTOXICITY; DENTAL CARIES

Document Type: Research Article

Affiliations: 1: Professor of Rehabilitation Science Post-Graduation Program, Nove de Julho University -UNINOVE, São Paulo -SP, Brazil 2: Professor of School of Dentistry, Nove de Julho University -UNINOVE, São Paulo -SP, Brazil 3: Professor of School of Dentistry, Mogi das Cruzes University, UMC, Mogi das Cruzes, São Paulo, Brazil 4: Post-graduate student of Rehabilitation Science Post-Graduation Program, Nove de Julho University -UNINOVE, São Paulo -SP, Brazil

Publication date: 01 July 2009

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  • Acquired after the merger between the American Society of Dentistry for Children and the American Academy of Pediatric Dentistry in 2002, the Journal of Dentistry for Children (JDC) is an internationally renowned journal whose publishing dates back to 1934. Published three times a year, JDC promotes the practice, education and research specifically related to the specialty of pediatric dentistry. It covers a wide range of topics related to the clinical care of children, from clinical techniques of daily importance to the practitioner, to studies on child behavior and growth and development. JDC also provides information on the physical, psychological and emotional conditions of children as they relate to and affect their dental health.
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