Comparison between the effect of PETG and TPU aligner materials on attachment surface wear | ||||
| Egyptian Orthodontic Journal | ||||
| Volume 66, Issue 1, December 2024, Page 120-129 PDF (635.11 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/eos.2024.302364.1116 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Mostafa Kamal Abdo Khairallah  1; Kareem M Mohamed2; Wael Mohamed Refai3
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| 1assistant lecturer of orthodontics, faculty of dentistry, Aswan university, Egypt | ||||
| 2Department of orthodontics, Faculty of Dentistry, Minia University, Egypt. | ||||
| 3orthodonntic department , faculty of dentistry, minia university | ||||
| Abstract | ||||
| Aim: The current study aimed to quantitatively evaluate the surface wear of same configuration of attachments in patients during clear aligner therapy using two different types of aligner materials. Materials & Methods: 20 lower 1st premolars on the same quadrant from 20 patients were recruited in the study. They were divided randomly into 2 groups (10 per group) one group treated with PETG aligner materials & the other treated with TPU aligner materials. Both groups had vertical composite attachment. The scans were taken just after bonding the attachments T0 and after 4 months T1. The volume of the attachments was calculated and analyzed. Results: Both materials showed significant drop in size volume between the two time points (p-value: <0.001), PET-G was significantly associated with larger difference. The mean drop in volume was -3.9 mm3 in the PET-G group compared to only -2.5 mm3 in the TPU group (p-value: 0.016) Conclusion: PETG aligner material causes more attachment surface wear and attachment damage than TPU aligner material | ||||
| Keywords | ||||
| PETG; TPU; Attachment surface wear | ||||
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