Hall technique crowns and children's masseter muscle activity: A surface electromyography pilot study.

Background: Hall technique crowns (HTCs) alter the occlusion temporarily, potentially affecting jaw muscles, particularly the masseter - the primary jaw-closing muscle.

Aim: To assess masseter muscle activity (MMA) in children treated with a unilateral HTC.

Design: In 12 children treated with a single HTC, bilateral MMA was recorded with surface electromyography (sEMG) for ten cycles of Rest Position (RP) and Maximum Voluntary Clenching (MVC) over 20 seconds immediately pre-HTC cementation (P ), immediately post-HTC cementation (P ), at 2 weeks post-HTC cementation (P ) and at 6 weeks post-HTC cementation (P ).