Stress Relaxation Properties of Five Orthodontic Aligner Materials: A 14-Day In-Vitro Study

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Bioengineering (Basel). 2022 Jul 28;9(8):349. doi: 10.3390/bioengineering9080349. ABSTRACT We aimed to investigate the stress relaxation properties of five different thermoplastic aligner materials subjected to 14 days of constant deflection. Five different thermoplastic aligner materials were selected, whose elastic properties varied: F22 Evoflex, F22 Aligner, Durasoft, Erkoloc-Pro and Duran. The static properties of these materials-in particular,…

Massive intrusion of maxillary second molar for prosthodontic purposes through miniscrew-supported biomechanics and fixed partial appliances: A case report

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Int Orthod. 2022 Jul 19:100662. doi: 10.1016/j.ortho.2022.100662. Online ahead of print. ABSTRACT This clinical case demonstrates how the use of a hybrid approach consisting of aligners, orthodontic miniscrews and partial fixed appliances can be an effective and efficient solution for recovering adequate vertical space for satisfactory implant-prosthetic rehabilitation. Specifically, massive intrusion of an upper second…

Comparative analysis of intraoral scanners accuracy using 3D software: an in vivo study

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Prog Orthod. 2022 Jul 4;23(1):21. doi: 10.1186/s40510-022-00416-5. ABSTRACT BACKGROUND: The purpose of the present in vivo study was to compare the accuracy, in terms of trueness, between full-arch digital impressions of different intraoral scanning systems, using as a reference the ideality of the conventional impression technique. METHODS: Polyvinyl siloxane (PVS) two-step technique impressions of 27…

Stability of transverse dental arch dimension with passive self-ligating brackets: a 6-year follow-up study

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Prog Orthod. 2022 Jun 20;23(1):19. doi: 10.1186/s40510-022-00414-7. ABSTRACT OBJECTIVE: The stability of the transverse expansion in passive self-ligating bracket treatments is a debated topic in orthodontics. However, to date, only 3 reports are available in the literature, with the maximum follow-up of 3 years after the end of therapy. The present study aims to evaluate…

Fluorescence-aided removal of orthodontic composites: an in vivo comparative study

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Prog Orthod. 2022 May 23;23(1):16. doi: 10.1186/s40510-022-00411-w. ABSTRACT BACKGROUND: To compare the fluorescent properties of 6 different orthodontic adhesives and provide useful information for clinicians in the adhesion choice, in order to remove it easily at the end of orthodontic treatment by using the Fluorescence-aided Identification Technique (FIT). METHODS: Six orthodontic adhesives were included: Ortho…