Wendl, Thomas and Leitner, Erich and Wendl, Brigitte and Proff, Peter (2026) Analysis of orthodontic aligner biocompatibility: leachable compounds of different aligner materials. BIOMEDICAL ENGINEERING-BIOMEDIZINISCHE TECHNIK, 71 (1). pp. 31-38. ISSN 0013-5585, 1862-278X
Full text not available from this repository. (Request a copy)Abstract
Objectives the aim of this study was to clarify the biocompatibility of different tooth repositioning splints (aligners). This included the characterization of the volatile fraction by headspace solid phase microextraction coupled to gas chromatography mass spectrometry, simulation of leachable organic compounds using artificial saliva and the quantitation of bisphenol A and bisphenol S after extraction.Methods Four different aligners were characterized in this study, these included two splints with novel shape memory properties: a printable aligner made of the resin Tera Harz TC-85 DAC (Graphy Inc., South Korea) and a self-manufactured SMP-Aligner consisting of the components polypropylene carbonate and thermoplastic polyurethane. The other two aligners were conventional, thermoformable aligners: CA (R) Pro Clear Aligner (Scheu Dental GmbH, Germany) and Erkodur-al (Erkodent Erich Kopp GmbH, Germany).Results no BPA was found in all four samples after 72 h. BPS was found in one Aligner. The most leachable compounds were found in the samples of the SMP- and the direct printed Graphy-Aligner. Most of the compound release occurred during the first 24 h.Conclusions the cumulative exposure effect from aligner wear should be carefully considered, although the current research indicates that the levels of leachable compounds are generally low.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CYTOTOXICITY; orthodontics; aligner; direct print; thermoformed; bisphenols; biocompatibility |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Kieferorthopädie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 23 Sep 2026 05:29 |
| Last Modified: | 23 Sep 2026 05:29 |
| URI: | https://pred.uni-regensburg.de/id/eprint/66328 |
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