Comparison between traditional and digital anterior repositioning splints on the upper airway in skeletal class II malocclusion with TMJ degenerative disease.

On the one hand, the sample size of this study (55 cases per group) was determined based on preliminary feasibility data rather than formal power analysis, and insufficient statistical power may lead to marginal significance of the results.

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Therefor, in the intergroup comparisons of changes in upper airway indicators, the digital device is superior to traditional treatment in improving the minimum cross-sectional area of the upper airway, with a suggestive trend toward better outcomes in total airway volume and oropharyngeal volume.

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