Accuracy of orthodontic movements with 3D printed aligners: A prospective observational pilot study.

Autor:	Migliorati M; Department of Digital Orthodontics, University of Genova, Genova, Italy., Drago S; Department of Digital Orthodontics, University of Genova, Genova, Italy., Castroflorio T; Private Practice, Torino, Italy., Pesce P; Department of Digital Orthodontics, University of Genova, Genova, Italy., Battista G; Private Practice, Foggia, Italy., Campobasso A; Department of Orthodontics, University of Foggia, Foggia, Italy., Gastaldi G; Department of Orthodontic, Università Vita Salute San Raffaele, Milano, Italy., Valvecchi FF; Department of Orthodontic, Università Vita Salute San Raffaele, Milano, Italy., Mari A; Department of Orthodontic, Università Vita Salute San Raffaele, Milano, Italy.
Jazyk:	angličtina
Zdroj:	Korean journal of orthodontics [Korean J Orthod] 2024 May 25; Vol. 54 (3), pp. 160-170. Date of Electronic Publication: 2024 Apr 08.
DOI:	10.4041/kjod23.268
Abstrakt:	Objective: Owing to the availability of 3D software, scanners, and printers, clinicians are encouraged to produce in-office aligners. Recently, a new directprinting resin (Tera Harz TC-85DAC) has been introduced. Studies on its mechanical characteristics and biological effects have been published; however, evidence on its efficacy in orthodontic treatment remains scarce. This pilot study aimed to investigate the accuracy of teeth movement achieved with directprinted aligners. Methods: Seventeen patients (eight males and nine females) with a mean age of 27.67 ± 8.95 years, presenting with dental rotations < 30° and spaces/crowding < 5 mm, were recruited for this study. The teeth movement was planned starting from a T0 digital dental cast. The 3D direct-printed aligners were produced using Tera Harz TC-85DAC resin. Once the orthodontic treatment was completed, a final digital cast was obtained (T1). The planned teeth positions were then superimposed onto the T0 and T1 digital models. The differences between the programmed movements and the achieved overall torque, tip, rotation, and transverse dimensions were assessed using the paired t test or Wilcoxon's signed rank test. Results: The overall accuracies for torque, tip, and rotation were 67.6%, 64.2%, and 72.0%, respectively. The accuracy of the change in transverse diameter was 99.6%. Conclusions: Within the limits of the present pilot study (difficulties with abnormally shaped teeth and use of attachments), it can be concluded that 3D printed aligners can be successfully printed in-house and utilized for mildly crowded cases, with a comparable accuracy of tooth movement to that of other aligners.
Databáze:	MEDLINE
Externí odkaz:	Zobrazit plný text záznamu