Hall technique crowns and children's masseter muscle activity: A surface electromyography pilot study
S Abu Serdaneh, M AlHalabi, M Kowash… - … journal of paediatric …, 2020 - Wiley Online Library
International journal of paediatric dentistry, 2020•Wiley Online Library
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 …
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 …
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.
Wiley Online Library以上显示的是最相近的搜索结果。 查看全部搜索结果