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Comparison of 2 Invisalign tray generations using the Peer Assessment Rating index. | LitMetric

AI Article Synopsis

  • - This study compared the effectiveness of two generations of Invisalign trays (previous material vs. SmartTrack) in improving dental alignment, measured by the Peer Assessment Rating (PAR) score for patients in a graduate orthodontic clinic.
  • - Forty-five patients used the previous Invisalign material while 49 patients used SmartTrack; both groups were analyzed for changes in their PAR scores before and after treatment, considering factors like age and treatment time.
  • - The results showed no significant differences in PAR score reductions between the two generations of aligners, indicating that both types were similarly effective in reducing malocclusion. However, the provider should also consider the patient-centric benefits of SmartTrack aligners.

Article Abstract

Introduction: This study aimed to establish if there is a significant difference in effectiveness between 2 generations of Invisalign trays in terms of Peer Assessment Rating (PAR) score reduction for finished patients from a graduate orthodontic clinic.

Methods: Forty-five pretreatment and posttreatment patients treated with the previous Invisalign material and 49 pretreatment and posttreatment patients treated with SmartTrack material were scored using the Peer Assessment Rating (PAR) index. Both groups were controlled for initial weighted PAR score, age, gender, and treatment time. The 2 generations were compared in regard to absolute reduction, percent reduction, and great improvement in PAR score.

Results: The mean absolute reduction in weighted PAR score between the groups was not statistically significant (P = 0.526). The mean percent reduction in weighted PAR score between the groups was not statistically significant (P = 0.210). The proportion of great improvement between the groups was not significant (P = 0.526). Only 6 of the 8 components of occlusion had enough variation to be modeled. An absolute reduction in unweighted PAR score was not significantly different between the groups for maxillary anterior alignment, overjet, or mandibular anterior alignment (P = 0.996, 1.000, and 0.114, respectively). Percent reduction in unweighted PAR score was not significantly different between the 2 groups for an anteroposterior, overbite, or transverse (P = 1.000, 1.000, and 1.000, respectively) relationships.

Conclusions: Our study indicates that both generations of Invisalign aligners improved the malocclusion to a similar degree according to the PAR index. Patient-centric benefits of SmartTrack aligner should also be considered by the provider.

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Source
http://dx.doi.org/10.1016/j.ajodo.2020.05.028DOI Listing

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