Effects of different aligner materials and attachments on orthodontic behavior

doi:doi.org/10.1016/j.jds.2021.01.011

中山醫學大學機構典藏 CSMUIR > 口腔醫學院 > 口腔醫學研究所 > 期刊論文 > Item 310902500/21580

Please use this identifier to cite or link to this item: https://ir.csmu.edu.tw:8080/ir/handle/310902500/21580

Title:	Effects of different aligner materials and attachments on orthodontic behavior
Authors:	Ho, Chung-Te Huang, Yun-Ting Chao, Chien-Wei Huang, Tsui-Hsine Kao, Chia-Tze
Contributors:	中山醫學大學;牙醫系
Keywords:	Attachment;Aligner;Polyethylene terephthalate;Polyethylene terephthalate glycol;Thermoplastic polyurethanes
Date:	2021-07-01
Issue Date:	2021-08-11T03:25:37Z (UTC)
Publisher:	Elsevier Inc.
ISSN:	1991-7902
Abstract:	Background/purpose: The orthodontic aligner becomes popular worldwide in or-thodontic therapy as an esthetic alternative to fixed labial braces. This study evaluated ortho-dontic tooth movement behavior using different aligner materials and attachment shapes for the movement of a single tooth. Materials and methods: First bicuspid extracted resin typodont models were printed with a 3D printer. Three type of attachments, an ellipsoid shape (thick and thin) and a bar, were de-signed to fit the canine crown surface. Three types of aligner materials, Polyethylene Tere-phthalate enhanced with glycol (BIOSTAR) Polyethylene Terephthalate (BenQ), and Thermoplastic polyurethanes (TPU) were used to fabricate different aligners. The typodonts with aligners were sunk in a water bath to simulate canine distal movement in vivo. The canine crown, root movement, and long axis angle changes in each step were calculated and re-corded. The data were analysed using a oneway ANOVA statistical method. Results: Comparing the three aligners, the changes the long axis of the canine showed that the BENQ group had a smaller change in the long axis angle. The BENQ group canine involved bodily movement, but the canine movement of the BIOSTAR and TPU group involved tipping. Comparing the three attachments, the bar type attachment had more canine crown tipping in the BIOSTAR and TPU groups. The thick and thin ellipsoid-shaped attachments showed no statistical differences in tooth movement. Conclusion: Attachment shape or size had little influence on the bodily movement of the tooth. A high modulus material may thus be suitable for clinical applications. (c) 2021 Association for Dental Sciences of the Republic of China. Publishing services by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons. org/licenses/by-nc-nd/4.0/).
URI:	https://ir.csmu.edu.tw:8080/handle/310902500/21580
Relation:	Journal of Dental Sciences, 2021-07-01, 卷 16, 期 3, 頁面 1001-1009
Appears in Collections:	[口腔醫學研究所] 期刊論文

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