Whole-field deformation measurement of clear orthodontic aligner by using electronic speckle pattern interferometry

被引：0

作者：

Wang, Jiawen ^{[1
]}

Wu, Junqing ^{[2
]}

Wu, Minyang ^{[1
]}

An, Yingbiao ^{[1
]}

Liu, Jingjing ^{[2
]}

Yan, Bin ^{[2
]}

Yang, Fujun ^{[1
]}

机构：

[1] School of Civil Engineering, Southeast University, Nanjing

[2] Department of Orthodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing

来源：

Guangxue Jingmi Gongcheng/Optics and Precision Engineering | 2024年 / 32卷 / 17期

关键词：

3-D measurement; clear aligner; electronic speckle pattern interferometry; micro-deformation;

D O I：

10.37188/OPE.20243217.2663

中图分类号：

学科分类号：

摘要：

To objectively and accurately measure the full-field deformation of clear aligners for improved clinical effectiveness and safety, a comprehensive three-dimensional deformation measurement system based on laser electronic speckle pattern interferometry has been established. The specimen's surface is illuminated with a tri-wavelength laser, generating a color speckle pattern. A phase-shift device produces a quasi π/2 phase step for all three color channels. Multi-frame images of the color speckle pattern are captured using a 3CCD color camera. Deformation phases are extracted using a 90° step four-frame technique from the separated red, green, and blue channels. A window-deformable filter effectively denoises the phase fringe patterns, allowing six derivative components to be obtained directly from the three deformation components using a digital differential method. Results show that the system achieves a precision of no more than 2.4'' for micro-rotation and better than 10με for strain measurements. Experimental results on clear aligners align closely with expected outcomes. © 2024 Chinese Academy of Sciences. All rights reserved.

引用

页码：2663 / 2675

页数：12

共 17 条

[1]

Attractiveness，acceptability，and value of orthodontic appliances［J］, American Journal of Orthodontics and Dentofacial Orthopedics, 135, 3, (2009)

[2]

WALTON D K, FIELDS H W，, JOHNSTON W M，, Et al., Orthodontic appliance preferences of children and adolescents［J］, American Journal of Orthodontics and Dentofacial Orthopedics, 138, 6, (2010)

[3]

BARBAGALLO L J，, SHEN G，, JONES A S，, Et al., A novel pressure film approach for determining the force imparted by clear removable thermoplastic appliances［J］, Annals of Biomedical Engineering, 36, 2, pp. 335-341, (2008)

[4]

DE CILLIS F，, Et al., Experimental study of the pressures and points of application of the forces exerted between aligner and tooth［J］, Nanomaterials, 9, 7, (2019)

[5]

LI X W., Preliminary Study on Measuring Invisible Orthodontic Force with Sensor Chip［D］, (2013)

[6]

Effects of time and clear aligner removal frequency on the force delivered by different polyethylene terephthalate glycol-modified materials determined with thin-film pressure sensors［J］, American Journal of Orthodontics and Dentofacial Orthopedics, 155, 1, pp. 98-107, (2019)

[7]

RASTOGI P., Simultaneous measurement of in-plane and out-of-plane displacement derivatives using dual-wavelength digital holographic interferometry［J］, Applied Optics, 50, 34, pp. H16-H21, (2011)

[8]

WANG Y H, YAO Y F, Et al., Progresses of shearography：key technologies and applications ［J］, Laser & Optoelectronics Progress, (2022)

[9]

SHAO X X, Et al., Thermal residual stress evaluation based on phase-shift lateral shearing interferometry［J］, Optics and Lasers in Engineering, 105, pp. 182-187, (2018)

[10]

MA Y H, JIANG H Y, DAI M L，, Et al., Cantilevered plate vibration analysis based on electronic speckle pattern interferometry and digital shearing speckle pattern interferometry［J］, Acta Optica Sinica, 39, 4, pp. 56-64, (2019)

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