Refining Occlusion with Muscle Balance to Enhance Long Term Orthodontic Stability

Mahony, Derek

doi:10.12816/0003015

Cited by 5 publications

(4 citation statements)

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“…However, muscle harmony and balance are often ignored by some clinicians. Abnormal muscle activity can affect the final result which leads to relapse and instability which requires prolong and lifetime of retainers [18,19] due to a lack of information regarding the effect of the types of the brackets to the muscle 3 BioMed Research International activities [20]. Due to the limitation of the research focusing on this aspect, a direct comparison is not possible.…”

Section: Resultsmentioning

confidence: 99%

Surface Electromyography (sEMG) Activity of Masticatory Muscle (Masseter and Temporalis) with Three Different Types of Orthodontic Bracket

Nishi

Rahman

Alam

et al. 2021

BioMed Research International

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Objective. This pre-post study is aimed at determining the effects of masticatory muscle activity (masseter and temporalis) measured via sEMG between conventional, self-ligating, and ceramic bracket after six months of orthodontic treatment. Methods. A total of eighteen (18) malocclusion patients were identified. Malocclusion patients were subdivided into 3 groups based on the bracket selection (conventional, self-ligating, and ceramic bracket) with 6 patients for each group. sEMG of muscles were done using a two-channel electromyography device, where pregelled and self-adhesive electrodes (bilateral) were applied. Chewing and clenching of masseter and temporalis muscle activity were recorded for 20 s pre and 6 months of orthodontic treatment using sEMG (frequency 60 Hz). The data were analysed by using repeated measures ANOVA in IBM SPSS Statistics Version 24.0. Results. Chewing and clenching for masseter muscle showed no significant difference ( P > 0.05 ) in sEMG activity of three types of the brackets. However, for temporalis muscle, there was a significant difference found in sEMG activity during chewing ( P < 0.05 ) and clenching ( P < 0.05 ) between these three brackets. Conclusion. The activity of temporalis muscle showed significant changes in chewing and clenching, where the conventional group demonstrated better muscle activity pre and at six months of fixed appliances.

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Section: Resultsmentioning

confidence: 99%

Surface Electromyography (sEMG) Activity of Masticatory Muscle (Masseter and Temporalis) with Three Different Types of Orthodontic Bracket

Nishi

Rahman

Alam

et al. 2021

BioMed Research International

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“…Relapse and settling are examples of the craniofacial skeletal system adapting to a new occlusion. The achievement of a balance between morphological changes in occlusion and the functional adaptation of the surrounding neuromuscular system play a role in long-term occlusal stability [ 15 ]. Stable orthodontic retention depends on an equilibrium among the forces derived from the periodontal and gingival tissues, the orofacial musculature, the occlusion, and the post-treatment facial growth and development [ 20 , 21 ].…”

Section: Discussionmentioning

confidence: 99%

“…There have been a few studies that evaluate the relationship of occlusal contacts and masticatory muscles in post-orthodontic subjects, however they have not considered the retention protocol [ 14 , 15 ]. To the best of the authors’ knowledge, there are no studies investigating both occlusal dynamics and EMG muscle activity during post-orthodontic period follow-up.…”

Section: Introductionmentioning

confidence: 99%

Computerized Assessment of Occlusion and Muscle Activity during Use of a Multilayer Clear Retainer: A Preliminary Study

Kim

Choi

et al. 2021

Sensors

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The aim of this preliminary study was to evaluate the short-term changes of occlusal contacts and muscle activity after orthodontic treatment during the use of a multi-layer clear retainer. Evaluation was done with the T-scan and BioEMG systems. A total of 18 subjects were included, who were evaluated at three time intervals—T0 at debonding, T1 at one month after retainer delivery, and T2 at four months after retainer delivery. The T-scan and electromyography (EMG) data were recorded simultaneously. The T-scan system recorded the occlusion time, disclusion time and force distribution. The EMG waves were quantified by calculating the asymmetry index and activity index. The time variables changed but not significantly. Occlusal force decreased in the anterior dentition and increased in the posterior dentition during T0–T2. There was no clear evidence of a relationship between unbalanced occlusal forces and muscle activity. In most subjects, the temporalis anterior muscle was more dominant than the masseter muscle. From this preliminary computerized study, there were no significant changes in the state of the occlusion or muscle activity during the short-term retention period.

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“…Thus, those authors concluded that due to the quantity of unstable contacts, intervention involving the occlusal surfaces should be performed to maintain and/or improve the number of those contacts. Similarly, it was mentioned that when the occlusal contacts are distributed irregularly throughout the dental arch, they are capable of promoting dental motion, generating occlusal instability [5]. The variation of an axial force from zero to 30 degrees and inclined on a molar isolated in the arc promotes a significant increase of four times the force supported by the alveolar bone on the side.…”

Section: Introductionmentioning

confidence: 99%

Influence Of Increase Of The Occlusal Contact Area On The Tension Generation On Natural Teeth And Adjacent Structures By Finite Element Analisys (FEA)

Fm¹,

Lanza²,

J³

et al. 2014

Dentistry

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Refining Occlusion with Muscle Balance to Enhance Long Term Orthodontic Stability

Cited by 5 publications

References 0 publications

Surface Electromyography (sEMG) Activity of Masticatory Muscle (Masseter and Temporalis) with Three Different Types of Orthodontic Bracket

Surface Electromyography (sEMG) Activity of Masticatory Muscle (Masseter and Temporalis) with Three Different Types of Orthodontic Bracket

Computerized Assessment of Occlusion and Muscle Activity during Use of a Multilayer Clear Retainer: A Preliminary Study

Influence Of Increase Of The Occlusal Contact Area On The Tension Generation On Natural Teeth And Adjacent Structures By Finite Element Analisys (FEA)

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