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The Effect of Passive Clear Aligners on Masticatory Muscle Activity in Adults with Different Levels of Oral Parafunction by Nicholas Pittar; Fiona Firth; Hamza Bennani; Mauro Farella is a Dentistry article available to read on EtoBox.

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## Abstract ## Background There is limited knowledge of the possible side‐effects of clear aligners on jaw function. ## Objectives To determine the short‐term effect of passive clear aligners (PCAs) on masticatory muscle activity (MMA), occlusal discomfort (OD) and temporomandibular disorder (TMD) symptoms in adults with different levels of self‐reported oral parafunction. ## Materials and Methods Participants were screened for oral parafunctional behaviours using the oral behavioural checklist. Respondents in ≥85th and ≤15th percentiles were invited to participate and allocated to a high (HPF: N = 15) or low (lower parafunction [LPF]: N = 16) parafunction group. Participants underwent a TMD clinical examination; somatisation and somatosensory amplification were assessed by questionnaires; OD and stress were assessed by visual analogue scales. While wearing PCAs, awake‐time MMA was assessed three times over 9 days using a wearable electromyography device, along with OD, stress and TMD symptoms. ## Results The wearing of PCAs was associated with a significant decrease in mean contraction episode amplitude in both groups (p = 0.003). OD levels increased and remained raised in all par

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Author

Nicholas Pittar; Fiona Firth; Hamza Bennani; Mauro Farella

Publisher

Wiley

Published

2023

Field

Dentistry (Health Sciences)