Oral myofunctional and electromyographic evaluation of the orbicularis oris and mentalis muscles in patients with class II/1 malocclusion submitted to first premolar extraction

Souza, Denize Ramirez de; Semeghini, Tatiana Adamov; Kroll, Lúcio Benedicto; Bérzin, Fausto

doi:10.1590/s1678-77572008000300012

Cited by 11 publications

(16 citation statements)

References 13 publications

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“…The orbicularis muscle of the mouth (upper part) presented similarity between ORO and RON, and significant difference in relation to RN. In the mental muscle, a significant difference was found in all the situations investigated 34 ( Figures 3, 4, 5). …”

Section: Sample Characterizationmentioning

confidence: 79%

“…In this study, the orbicularis muscle of the mouth (upper part) presented an average RMS value of 3.61μv considered normal, and the mental muscle, 7.44μv, close to the normality pattern. In ORO and RON groups, RMS values were much higher in the orbicularis muscle of the mouth (upper part) and in the mentual 34 (Table 3). These results confirm that not only intra-oral pressure is different in the inefficient labial sealing, as well as the behavior of the perioral muscles 5 .…”

Section: Sample Characterizationmentioning

confidence: 96%

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The impact of oronasal breathing on perioral musculature

2017

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Purpose: to compare the behavior of perioral muscles in nasal, oral and oronasal respirators. Methods: a sample consisting of three distinct groups, equally subdivided into Nasal, Oral and Oronasal Respirators. The behavior of the orbicular muscle of the mouth (upper part) and mentual one was measured by surface electromyography at rest, swallowing and labial isometry. Results: in all situations investigated, the orbicular muscle of the mouth (upper part) and mental muscle showed no significant difference in relation to Root Means Square, that is, average electrical activity between Oral and Oronasal Respirators. The data showed a significant difference in In Nasal Respirators, as compared to the other groups. Conclusion: similarity was seen in the comparison of perioral muscles behavior between oral and oronasal respirators, however, a significant difference in relation to nasal respirators.

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Section: Sample Characterizationmentioning

confidence: 79%

Section: Sample Characterizationmentioning

confidence: 96%

The impact of oronasal breathing on perioral musculature

2017

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“…Since its beginning, orthodontic treatment has always focused not only on dental displacement, but also on the control and modification of facial growth 7 , 12 , 15 . In growing patients, functional and orthopedic appliances can be used to modify dysfunctional habits, directing the facial structures towards more harmonious relationships 6 , 11 – 13 , 15 .…”

Section: Introductionmentioning

confidence: 99%

Non-invasive 3D facial analysis and surface electromyography during functional pre-orthodontic therapy: a preliminary report

Tartaglia

Grandi

Mian³

et al. 2009

J. Appl. Oral Sci.

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Objectives:Functional orthodontic devices can modify oral function thus permitting more adequate growth processes. The assessment of their effects should include both facial morphology and muscle function. This preliminary study investigated whether a preformed functional orthodontic device could induce variations in facial morphology and function along with correction of oral dysfunction in a group of orthodontic patients in the mixed and early permanent dentitions.Material and Methods:The three-dimensional coordinates of 50 facial landmarks (forehead, eyes, nose, cheeks, mouth, jaw and ears) were collected in 10 orthodontic male patients aged 8-13 years, and in 89 healthy reference boys of the same age. Soft tissue facial angles, distances, and ratios were computed. Surface electromyography of the masseter and temporalis muscles was performed, and standardized symmetry, muscular torque and activity were calculated. Soft-tissue facial modifications were analyzed non-invasively before and after a 6-month treatment with a functional device. Comparisons were made with z-scores and paired Student's t-tests.Results:The 6-month treatment stimulated mandibular growth in the anterior and inferior directions, with significant variations in three-dimensional facial divergence and facial convexity. The modifications were larger in the patients than in reference children. In several occasions, the discrepancies relative to the norm became not significant after treatment. No significant variations in standardized muscular activity were found.Conclusions:Preliminary results showed that the continuous and correct use of the functional device induced measurable intraoral (dental arches) and extraoral (face) morphological modifications. The device did not modify the functional equilibrium of the masticatory muscles.

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“…Factors that have been insufficiently studied and for which evidence cannot, to date, enable us to draw conclusions but could affect relapse, include skeletal characteristics such as the gonial angle 5 ; soft tissue values such as lip position 4 ; and functional factors such as bite force, 5 tongue thrust, and orbicularis oris, mentalis, and anterior suprahyoid muscle activity. 29,30 To obtain better evidence of the effect of certain factors on relapse, more high-quality prospective studies are needed. RCTs with adequate sample sizes, homogenous patient samples, transparent definitions of relapse, and robust methodology need to be conducted to enable researchers to conduct meta-analyses and therefore produce objective, quantifiable results in the future.…”

Section: Excluded Factors Possibly Influencing Sagittal Stabilitymentioning

confidence: 99%

Predictive factors of sagittal stability after treatment of Class II malocclusions

Maniewicz

Antonarakis

Kiliaridis

2015

The Angle Orthodontist

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Objective: To determine the existence of factors permitting the prediction of sagittal stability after orthodontic treatment in patients with Angle Class II malocclusion. Materials and Methods: PubMed, EMBASE, and the Cochrane Library were searched up to March 2015. Inclusion criteria were longitudinal studies with at least 10 subjects investigating associations between at least one factor and stability, with an average minimum follow-up period of 2 years; stability measured using posttreatment sagittal dental changes; and orthodontic treatment including removable and/or fixed appliances with or without extractions. Two reviewers independently selected and assessed the quality of the articles. Results: The search strategy resulted in 1372 articles, of which 17 met the inclusion criteria. Large changes during treatment in molar and canine relationships were the only two factors found to be positively associated with relapse, but with limited evidence. Fourteen factors were found not to be predictive of relapse, also with limited evidence. These factors included treatment characteristics, patient pretreatment characteristics, and final posttreatment characteristics. Conclusions: There is currently limited evidence to support the influence of factors predictive of sagittal stability following Class II malocclusion treatment. More high-quality prospective studies are needed, and functional factors possibly affecting relapse also need to be further assessed.

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Oral myofunctional and electromyographic evaluation of the orbicularis oris and mentalis muscles in patients with class II/1 malocclusion submitted to first premolar extraction

Cited by 11 publications

References 13 publications

The impact of oronasal breathing on perioral musculature

The impact of oronasal breathing on perioral musculature

Non-invasive 3D facial analysis and surface electromyography during functional pre-orthodontic therapy: a preliminary report

Predictive factors of sagittal stability after treatment of Class II malocclusions

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