• Corpus ID: 29153127

Effect of Gingival Margin Design on Retention of Thermoformed Orthodontic Aligners

@inproceedings{Cowley2012EffectOG,
  title={Effect of Gingival Margin Design on Retention of Thermoformed Orthodontic Aligners},
  author={Daniel P. Cowley},
  year={2012}
}
Purpose: The aim of this study was evaluate the effect of gingival margin design (scalloped vs. straight cut at gingival zenith vs. straight cut 2mm above gingival zenith) on the retention of thermoformed aligners. Retention of aligners is a critical requirement for efficient tooth movement. Methods: Two thermoform aligner materials were used, Invisacryl A and Invisacryl C, in 0.040 mil (1mm) thickness. Six aligner designs were fabricated for each of the two aligner materials (12 total aligner… 

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