Moritz Foersch1, Christian Schuster2, Roman K Rahimi3, Heinrich Wehrbein4, Collin Jacobs5. 1. a Research Fellow, Department of Orthodontics and Dentofacial Orthopedics, University Mainz Medical Center Mainz, Germany. 2. b Dental student, School of Dentistry, University Mainz Medical Center, Mainz, Germany. 3. c Resident, Research Fellow, Department of Oral and Maxillofacial Surgery, University Mainz Medical Center, Mainz, Germany. 4. d Professor and Chair, Department of Orthodontics and Dentofacial Orthopedics, University Mainz Medical Center, Mainz, Germany. 5. e Assistant Professor, Department of Orthodontics and Dentofacial Orthopedics, University Mainz Medical Center, Mainz, Germany.
Abstract
OBJECTIVE: To analyze the clinical and laboratory properties of the recently introduced APC flash-free orthodontic adhesive. MATERIAL AND METHODS: After bonding of 80 brackets on human teeth (group A: APC flash-free adhesive n = 40, group B: APC Plus adhesive n = 40), the following measurements were recorded: time for bonding, stereomicroscopic evaluation of excess adhesive, color penetration (methylene blue, 0.5%/24 h), and Adhesive Remnant Index (ARI) score after debonding. RESULTS: The time needed for bonding differed significantly between the two groups (A: 19.5 s/tooth vs B: 33.8 s/tooth). The adhesive excess, which was metrically measured from the bracket edge, ranged from 166.27 µm to 81.66 µm (group A) and 988.53 µm to 690.81 µm (group B). After methylene coloration in group A, 52 of 80 measurements showed discoloration on the bracket-adhesive and/or adhesive-enamel interface, while for group B, 78 of 80 were coloration positive. The ARI scores did not differ, with an average ARI score of 2.0 for group A and 2.8 for group B. CONCLUSION: The flash-free adhesive significantly reduced the time needed for the bonding process. The excess resin expanded 0.16 to 0.08 mm over the bracket margin. The new technology seems to facilitate a smooth and sufficient marginal surface of the adhesive, which clinically might improve reduction of plaque accumulation.
OBJECTIVE: To analyze the clinical and laboratory properties of the recently introduced APC flash-free orthodontic adhesive. MATERIAL AND METHODS: After bonding of 80 brackets on human teeth (group A: APC flash-free adhesive n = 40, group B: APC Plus adhesive n = 40), the following measurements were recorded: time for bonding, stereomicroscopic evaluation of excess adhesive, color penetration (methylene blue, 0.5%/24 h), and Adhesive Remnant Index (ARI) score after debonding. RESULTS: The time needed for bonding differed significantly between the two groups (A: 19.5 s/tooth vs B: 33.8 s/tooth). The adhesive excess, which was metrically measured from the bracket edge, ranged from 166.27 µm to 81.66 µm (group A) and 988.53 µm to 690.81 µm (group B). After methylene coloration in group A, 52 of 80 measurements showed discoloration on the bracket-adhesive and/or adhesive-enamel interface, while for group B, 78 of 80 were coloration positive. The ARI scores did not differ, with an average ARI score of 2.0 for group A and 2.8 for group B. CONCLUSION: The flash-free adhesive significantly reduced the time needed for the bonding process. The excess resin expanded 0.16 to 0.08 mm over the bracket margin. The new technology seems to facilitate a smooth and sufficient marginal surface of the adhesive, which clinically might improve reduction of plaque accumulation.
Authors: Carlos González-Serrano; Eugenia Baena; María-Victoria Fuentes; Alberto Albaladejo; Manuel Míguez-Contreras; Manuel O Lagravère; Laura Ceballos Journal: J Clin Exp Dent Date: 2019-02-01