journal article·2022-07-25Open access

Visualization of orthodontic forces generated by aligner-type appliances

Yuri SHIMADA, Yoshifumi YOSHIDA, Ryosuke ISOGAI, Koutaro MAKI

Dental Materials Journal· Volume 41· Issue 4

Abstract

Recently, the number of patients who request esthetically pleasing aligner-type orthodontic appliances (referred to as aligners) has been increasing. However, the orthodontic forces generated by these aligners are still unknown. This study aimed to verify whether the orthodontic force in aligners can be estimated by measuring near infrared 2D birefringence, and to visualize the orthodontic force. We measured the mechanical and photoelastic properties of transparent orthodontic thermoplastic specimens to correlate the optical retardation with the applied load. The results confirmed equivalence between the mechanical properties and the photoelasticity. In addition, the 2D retardation distribution that occurred when stress was applied to the sample was mapped and visualized. This indicates that it is possible to estimate and visualize the orthodontic force using the retardation obtained by near infrared 2D birefringence measurement.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Orthodontics and Dentofacial Orthopedics · Dental materials and restorations · Dental Implant Techniques and Outcomes

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Orthodontics, Graduate School of Dentistry, Showa University

Seiko Holdings Corporation

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