1Département d’Orthopédie dento-faciale, Université de Lorraine, 2 rue du Docteur Heydenreich, 54000Nancy, France
2Institut Jean Lamour, UMR 7198, CNRS, Université de Lorraine, Faculté des Sciences et Technologies, BP 70239 , 54506Vandoeuvre-les-Nancy Cedex, France
3CHRU de Nancy, Unité de Méthodologie, Data-management et Statistiques, Plateforme d’Aide à la Recherche Clinique, pôle Structure de Soutien à la Recherche, CHRU de Nancy, Bâtiment Recherche, rue du Morvan, 54511Vandoeuvre-les-Nancy Cedex, France
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Introduction: Does the new adhesive-coated APC™ Flash-Free bracket from the 3M Unitek® group simplify the bonding protocol without compromising precision? Objectives: The aim of this study was to compare the morphology of the adhesive joint between the classic APC™ PLUS adhesive-coated brackets and APC™ Flash-Free brackets. Materials and Methods: In vitro bonding of esthetic brackets in the CLARITY™ ADVANCED range was performed to compare the morphology of the excess flash between APC™ PLUS and APC™ Flash-Free brackets. Results: No statistically significant difference was found concerning the morphology of the excess flash between APC™ PLUS and APC™ Flash-Free brackets. A statistically significant difference was found regarding the thickness of the adhesive between the two types of bracket. The adhesive used for the APC™ Flash-Free brackets was significantly thicker than for the APC™ PLUS brackets (P=0.0001). Adhesive thickness was also more homogeneous on the APC™ Flash-Free brackets (P=0.001 for the relative difference). Conclusion: The adhesive is thicker but adhesive homogeneity is greater with APC™ Flash-Free brackets than with APC™ PLUS brackets.