Hall technique crowns and children's masseter muscle activity: A surface electromyography pilot study. Issue 3 (24th January 2020)

• Record Type: Journal Article
• Authors: Abu Serdaneh, Salsabeel; AlHalabi, Manal; Kowash, Mawlood; Macefield, Vaughan; Khamis, Ammar H.; Salami, Anas; Hussein, Iyad
• Is Part Of: International journal of paediatric dentistry. Volume 30:Issue 3(2020)
• Page Start: 303
• Page End: 313
• Publication Date: 2020-01-24
• Subjects: children -- dental caries -- Hall technique -- masseter muscle activity -- surface electromyography -- United Arab Emirates; Pedodontics -- Periodicals; 617.645
• DOI: 10.1111/ipd.12611
• Languages: English
• ISSNs: 0960-7439

Abstract

Abstract: 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 (Pbase ), immediately post‐HTC cementation (Pimmed ), at 2 weeks post‐HTC cementation (P2w ) and at 6 weeks post‐HTC cementation (P6w ). t test, ANOVA and post hoc statistics were used ( P < .05). Results: As expected, MMA was low at rest and increased during maximal jaw clenching ( P < .0001). MMA (mean ± SD) increased significantly ( P < .001) between RP and MVC at: Pbase [from 1.60 μV·s (±0.96) to 5.40(±2.30)]; Pimmed [1.57(±1.15) to 3.75(±1.87)]; P2w [1.39(±0.54) to 5.54(±1.45)] and finally P6w [1.46(±0.56) to 6.45(±2.56)]. Rest MMA at Pbase, Pimmed, P2w and P6w remained unchanged ( P = .18) whereas Pbase clench MMA reduced by a third at Pimmed ( P < .001), returned to and exceeded baseline levels at P2w ( P = .822) and P6w ( P < .001), respectively. Conclusions: This pilot study showed that Hall technique crowns may affect masseter muscle activity in children. Clench MMA was reduced immediately post‐treatment but returned to and later exceeded baseline levels at 2 and 6 weeks, respectively. Rest MMA remained unchanged.