Table 1.

Investigated aligner materials, including manufacturer, material thickness, and composition

Untersuchte Aligner-Materialien, einschließlich Hersteller, Materialstärke und Zusammensetzung

Name	Manufacturer	Thickness	Composition
Essix ACE®	Dentsply Sirona (Bensheim, Germany)	0.75 mm	Single-layer (PET)
Essix®PLUS™	Dentsply Sirona (Bensheim, Germany)	0.80 mm	Unknown
Invisalign®	Align Technology (San Jose, CA, USA)	0.75 mm	Multilayera
Duran®+	Scheu-Dental (Iserlohn, Germany)	0.75 mm	Single-layer (PET-G)
Zendura™	Bay Materials (Fremont, CA, USA)	0.76 mm	Single-layer (TPU)

PET polyethylene terephthalate, PET‑G polyethylene terephthalate glycol, TPU thermoplastic polyurethane

^a The Invisalign thermoformed aligners utilized in this investigation were procured directly from the manufacturer, lacking any explicit details regarding the fabrication conditions, sheet thickness, and composition