Accuracy of Three Bracket Transfer Media for Indirect Bonding Techniques (IDB) Fabricated by Three-Dimensional Printing

Abstract:

To evaluate and compare the accuracy of bracket placement in three bracket transfer media techniques for indirect bonding. A total of 300 brackets were bonded on dental casts by indirect bonding techniques using three different bracket transfer media. The bracket positions were simulated by digital software. In the first two methods, digital models were designed with two types of markers, one with fully mocked up bracket (container method), and another with only marked bracket margins (marker method), then the models were printed out by a three-dimensional (3D) printer using pink resin and bracket transfer trays were vacuum formed on these models with polyvinylsiloxane. In the third methods, digital software was used to design full arch transfer trays, and printed by a stereolithographic 3D printer using elastic resin. With the transfer trays, the brackets were bonded onto dental stone casts, and a 3D model scanner was used to capture the final bracket positions on the casts. Superimpositions between the planned and actual bracket positions were done. Nonparametric statistical analyses were used to determine whether there were significant differences between planned and actual bracket positions and between the three methods. All significant differences in bracket position were less than 0.31 mm and most (95%) were less than 0.08 mm. Significant differences between all three methods were found. Indirect bonding methods using digital software combined with 3D printing show good accuracy with clinically insignificant positional discrepancies of less than 0.5mm.

• Periodical: Applied Mechanics and Materials (Volume 897)
• Pages: 179-184
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.897.179
• Online since: April 2020
• Authors: Sopit Rattanasumawong*, Peerapong Santiwong, Somchart Raocharernporn, Syrina Tantidhnazet
• Keywords: Bracket Accuracy, Bracket Transfer Media, Indirect Bonding

References

[1] E. Silverman, M. Cohen, A. A. Gianelly, V. S. Dietz, A universal direct bonding system for both metal and plastic brackets, Am. J. Orthod. 62(3) (1972) 236-244.

DOI: 10.1016/s0002-9416(72)90264-3

[2] J. T. Kalange, Indirect bonding: a comprehensive review of the advantages, World J. Orthod. 5(4) (2004).

[3] M. W. Brown, L. Koroluk, C. C. Ko, K. Zhang, M. Chen, T Nguyen, Effectiveness and efficiency of a CAD/CAM orthodontic bracket system, Am. J. Orthod. Dentof. 148(6) (2015) 1067-1074.

DOI: 10.1016/j.ajodo.2015.07.029

[4] A. Westerlund, W. Tancredi, M. Ransjo, A. Bresin, S. Psonis, O. Torgersson, Digital casts in orthodontics: a comparison of 4 software systems, Am. J. Orthod. Dentof. 147(4) (2015) 509-516.

DOI: 10.1016/j.ajodo.2014.11.020

[5] M. L. Quimby, K. W. Vig, R. G. Rashid, A. R. Firestone, The accuracy and reliability of measurements made on computer-based digital models, Angle Orthod. 74(3) (2004) 298-303.

[6] P. S. Fleming, V. Marinho, A. Johal, Orthodontic measurements on digital study models compared with plaster models: a systematic review, Orthod. Craniof. Res. 14(1) (2011) 1-16.

DOI: 10.1111/j.1601-6343.2010.01503.x

[7] T. Grünheid, M. S. Lee, B. E. Larson, Transfer accuracy of vinyl polysiloxane trays for indirect bonding, Angle Orthod. 86(3) (2015) 468-474.

DOI: 10.2319/042415-279.1

[8] S. Sasamoto, M. Konno, J. Uechi, Y. Yasuda, M. Iijima, I. Mizoguchi, Assessment of the effects of two indirect bonding techniques on the three-dimensional accuracy of bracket positioning, J. Hokkaido Orthod. Soc. 46(1) (2018) 2.

[9] J. Schmid, D. Brenner, W. Recheis, P. Hofer-Picout, M. Brenner, A. G. Crismani, Transfer accuracy of two indirect bonding techniques—an in vitro study with 3D scanned models, Europ. J. Orthod. 40(5) (2018) 549-555.

DOI: 10.1093/ejo/cjy006

[10] A. E. Castilla, J. J. Crowe, J. R. Moses, M. Wang, J. L. Ferracane, D. A. Covell Jr, Measurement and comparison of bracket transfer accuracy of five indirect bonding techniques, Angle Orthod. 84(4) (2014) 607-614.

DOI: 10.2319/070113-484.1

[11] Y. Li, L. Mei, J. Wei, X. Yan, X. Zhang, W. Zheng, Y. Li, Effectiveness, efficiency and adverse effects of using direct or indirect bonding technique in orthodontic patients: a systematic review and meta-analysis, BMC Oral Health, 19(1) (2019) 137.

DOI: 10.1186/s12903-019-0831-4