![]() ![]() This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.ĭata Availability: All relevant data are within the paper and its Supporting Information files.įunding: This research was supported by a grant (16172MFDS335) from the Korea Ministry of Food and Drug Safety in 2016 ( ) and by Advanced Technology Center Program (No.10077361), 'Integrated System for Dental Diagnosis, Treatment Simulation & PSI(Patient Specific Instrument) Design' from the Ministry of Trade, Industry & Energy, MOTIE, Korea ( The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.Ĭompeting interests: The authors have declared that no competing interests exist.Ĭomputer-aided design and computer-aided manufacturing (CAD/CAM) systems have had great impacts on the efficiency and accuracy of dental treatment in recent years, as they have been implemented in both the dental laboratory and the clinic. Received: ApAccepted: AugPublished: September 11, 2018Ĭopyright: © 2018 Sha et al. PLoS ONE 13(9):Įditor: Chun-Pin Lin, National Taiwan University, school of dentistry, TAIWAN Customized brackets exhibited large deviations in DF and SBS all customized bracket systems exhibited DF that was equivalent or superior to that of preadjusted brackets, even when placed by indirect bonding.Ĭitation: Sha H-N, Choi S-H, Yu H-S, Hwang C-J, Cha J-Y, Kim K-M (2018) Debonding force and shear bond strength of an array of CAD/CAM-based customized orthodontic brackets, placed by indirect bonding- An In Vitro study. Group 3 had significantly lower ARI scores than other groups (P<0.05). However, SBS in Group 5 (11.46☗.22 MPa) was significantly higher than in Group 3 (3.58☒.14 MPa). ![]() No customized bracket groups exhibited significant differences in SBS, relative to Group 1 (6.73☑.36 MPa). ![]() Group 2 (196.90☘2.75 N) exhibited significantly higher DF than Group 1 (62.77☑2.65 N) other groups exhibited similar DFs, compared with Group 1. Adhesive remnants were analyzed via stereo microscopic images. Debonding force (DF N) was measured by Instron universal testing machine and shear bond strength (SBS MPa) was calculated via dividing DF by bonding area. Except in Group 1, premolar specimens were scanned via model scanner, and the images were sent to each manufacturing company to fabricate customized brackets and transfer trays/jigs. Thirty extracted human upper premolars were divided into five groups: Group 1, preadjusted self-ligating labial metal bracket Group 2, lingual self-ligating metal injection molding customized bracket Group 3, gold-casted lingual customized bracket Group 4, labial self-ligating milled customized bracket Group 5, labial customized resin base bracket. This study was undertaken to evaluate the design, bond strength, and residual adhesives of four different CAD/CAM customized brackets that were attached to human tooth specimens by indirect bonding. However, data remain limited regarding customized bracket design, characteristics, and stability. Based on three-dimensional scanning and computer-aided design and computer-aided manufacturing (CAD/CAM) techniques, customized bracket systems are increasingly used. ![]()
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