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International Journal of Orofacial Myology and Myofunctional Therapy is published by MDPI from Volume 51 Issue 1 (2025). Previous articles were published by another publisher in Open Access under a CC-BY (or CC-BY-NC-ND) licence, and they are hosted by MDPI on mdpi.com as a courtesy and upon agreement with the previous journal publisher.

Int. J. Orofac. Myol. Myofunct. Ther., Volume 43, Issue 1 (November 2017) – 6 articles

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17 pages, 552 KiB

Open AccessArticle

Effect of Myofunctional Therapy on Orofacial Functions and Quality of Life in Individuals Undergoing Orthognathic Surgery

by Renata Resina Migliorucci, Dagma Venturini Marques Abramides, Raquel Rodrigues Rosa, Marco Dapievi Bresaola, Hugo Nary Filho and Giédre Berretin-Felix

Int. J. Orofac. Myol. Myofunct. Ther. 2017, 43(1), 60-76; https://doi.org/10.52010/ijom.2017.43.1.5 - 1 Nov 2017

Cited by 3 | Viewed by 327

Abstract

Introduction: Some proposals of myofunctional therapy directed to individuals undergoing orthognathic surgery have been presented which promote the orofacial myofunctional balance, enhancing the treatment stability. Objective: To verify the effect of myofunctional therapy on orofacial functions and quality of life in individuals undergoing orthognathic surgery. Method: A total of 24 individuals, with mean age of 26.5 years, participated in the study. They were divided into two groups, namely with myofunctional therapy (N = 12) and without myofunctional therapy (N = 12). Breathing, chewing, swallowing, and speech were evaluated from tests established by the MBGR Orofacial Myofunctional Evaluation, using the scores specified in the protocol. The quality of life (QL) was evaluated using the Oral Health Impact Profile-OHIP-14 questionnaire, which comprises 14 questions that measure the individual´s perception of the impact of their oral conditions on their well-being in recent months. The evaluations were carried out before and 3 months after orthognathic surgery. The myofunctional therapy was initiated 30 days after surgery, with exercises aimed at improving orofacial mobility, tone and sensitivity, as well as the training of normal physiological patterns of orofacial functions. The comparisons between orofacial functions and the study groups were verified by the Mann-Whitney test, using a significance level of 5%. Results: After surgery, the individuals without myofunctional therapy presented with an improvement in breathing and oral health-related quality of life (p < 0.05), while in the group undergoing myofunctional therapy there was improvement in all aspects investigated (p < 0.05). Comparison between the study groups showed better performance in breathing (p = 0.002), chewing (p = 0.012), swallowing (p = 0.002) and speech (0.034) in individuals who underwent myofunctional therapy. Conclusion: The orthognathic surgery alone improved breathing and quality of life. However, the surgical procedure associated with myofunctional treatment, besides improving all oral functions investigated and quality of life, provided better functional performance in breathing, chewing, swallowing and speech. This study’s participants demonstrated the effectiveness of the orofacial myofunctional intervention. Full article

13 pages, 649 KiB

Open AccessCase Report

A Submerged Tooth Possibly Caused by Biting on a Tracheal Tube in Hospital Due to Cerebral Hemorrhage in Childhood

by Yamazaki Terumi, Kameoka Ryo, Shionoya Yoshiki, Matsuzaki Yuki, Ide Yoshiaki and Uchikawa Yoshimori

Int. J. Orofac. Myol. Myofunct. Ther. 2017, 43(1), 47-59; https://doi.org/10.52010/ijom.2017.43.1.4 - 1 Nov 2017

Viewed by 142

Abstract

We report the case study of a 17-year-old boy with cerebral-hemorrhage sequelae including intellectual disability, who presented with a severe, submerged first deciduous molar in his mandibular alveolar bone. It was believed that his condition was caused by biting on a tracheal tube during hospitalization after a fall that he experienced at the onset of a cerebral hemorrhage when he was 6 years old. His school dentist referred him to us, but he did not notice the submerged deciduous molar at that time. We found that the patient had 26 permanent teeth, with two congenitally missing lateral mandibular incisors, and there was some space with a small groove between his left first and second premolars. Panoramic radiography revealed the crown of his deciduous first molar lodged in the mandibular alveolar bone. Oral surgery to extract this tooth was performed under general anesthesia, with an additional aim of improving his oral hygiene. Additionally, a part of his extracted tooth was examined histopathologically, and was found to have no sign of ankylosis around its root. This case suggests that medical staff should pay attention to patients’ teeth in the hospital, especially because a tracheal tube has the potential to affect the teeth. This case also confirms the importance of dental treatment for people with special needs to improve their oral hygiene and quality of life. Full article

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13 pages, 502 KiB

Open AccessArticle

Development of a Computerized Method for Masticatory Pattern Assessment

by Rachel Pestana Marques, Marcio José Da Silva Campos, Raphaella Barcellos Fernandes, Bernardo Sotto-Maior Peralva, Luiz Cláudio Ribeiro and Robert Willer Farinazzo Vitral

Int. J. Orofac. Myol. Myofunct. Ther. 2017, 43(1), 34-46; https://doi.org/10.52010/ijom.2017.43.1.3 - 1 Nov 2017

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Abstract

Objective: To develop a computerized method to assess the mandibular lateral deviation pattern during mastication. Method: 44 videos of masticatory processes were analysed using the algorithm developed. The individuals were instructed to perform a specific pattern of mastication: only on the left or the right side (group 1), alternating five bites on one side and two on the opposite side (group 2), alternating 3 bites on each side (group 3). The computerized method identified, frame by frame, the lateral displacement of the chin and determined the amplitude and the percentage of mandibular lateral deviation to each side. Results: The groups 1 and 2 showed significantly higher number of cycles on the side of chewing compared to the opposite side and there was no difference between two sides in group 3. The amplitude of cycles showed similar results. In groups 1 and 2, the method identified the preferred chewing side, however, the percentage of the identified cycles in the chewing side was significantly lower than the percentage of cycles required (p < 0.001). Conclusion: The proposed computerized method was effective in identifying the bilateral masticatory pattern and recognizing the existence of preference to use one of the sides during the masticatory cycles. Full article

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15 pages, 669 KiB

Open AccessArticle

Deviation of the Mandibular Labial Frenum as Related to Signs and Symptoms of Temporomandibular Disorders (TMDs)

by Naif A. Bindayel, Moshabab A. Asiry and Georgios Kanavakis

Int. J. Orofac. Myol. Myofunct. Ther. 2017, 43(1), 19-33; https://doi.org/10.52010/ijom.2017.43.1.2 - 1 Nov 2017

Viewed by 125

Abstract

Aim: To investigate the association between mid-line deviation of the mandible, as determined by upper to lower labial frena, and signs and symptoms of Temporomandibular Disorders (TMDs). Materials and Methods: The current study was original research conducted on a sample of 439 medical records of TMD patients treated at Tufts University. All patients underwent a clinical examination revealed a detailed information regarding temporomandibular joints, history of pain, and comprehensive intra-oral findings. Subjects were divided into three groups: 1. No frenal deviation, 2. Deviation to the right, and 3. Deviation to the left. Results: Signs and symptoms of TMD tend to occur more likely on the side of the frenum deviation. The signs and symptoms that were significantly associated to frenum position were TMJ crepitation sounds and locking, right muscles pain on palpation (medial pterygoid and sternocleidomastoid), and “reported locking on the left TMJ”. Subjects with aligned frena showed a statistically significant increase in the range of motion to the right side. The results also revealed a highly significant association between maxillary plane canting and mandibular frenum position. Left posterior cross bite was significantly more prevalent in the left frenum deviation group. Conclusion: Expression of TMD signs and symptoms was more prevalent on the side of frenum deviation. TMD population showed a higher prevalence of left mandibular frenum deviation. Several signs and symptoms were significantly associated to frenum position. Full article

13 pages, 880 KiB

Open AccessArticle

Remediating Abnormal Oral Cavity Motor Strategies in a Horn Player Using RT-MRI: A Case Study

by Natalie Douglass, Peter W. Iltis, Jens Frahm, Dirk Voit, Arun A. Joseph and Patricia K. Fisher

Int. J. Orofac. Myol. Myofunct. Ther. 2017, 43(1), 5-17; https://doi.org/10.52010/ijom.2017.43.1.1 - 1 Nov 2017

Viewed by 137

Abstract

This study uses real-time (cine) MRI to examine how orofacial myofunctional disorders (OMDs) affect muscle function during speech and horn playing. Dynamic MRI images were captured of an OMD subject and control subjects reciting a speech task and sustaining a note on an MRI-compatible horn. A following visual feedback session allowed the OMD subject to view and react to their (cine) MRI next to the image of an elite subject. Profile lines created in MATLAB allowed analysis of muscle function and changes in oral cavitation between the OMD and control subjects. In both the speech and horn films, the OMD subject consistently utilized maladaptive muscle movements, resulting in low and forward tongue position against the front teeth. Both control subjects had tongue placement free of the front teeth, and the horn control subject could elevate the tongue to narrow the air stream and play higher pitches. The MRI films suggest a connection between speech disorders and compromised horn-playing technique. OMDs limit the ability of the tongue to make the changes in oral cavitation used to play different pitches on the horn. Full article

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1 pages, 57 KiB

Open AccessEditorial

Editor's Corner: Research

by Patricia Taylor

Int. J. Orofac. Myol. Myofunct. Ther. 2017, 43(1), 4; https://doi.org/10.52010/ijom.2017.43.1.6 - 1 Nov 2017

Viewed by 86

Abstract

While there is a great deal of research related to orofacial myology and the positive effects of myofunctional therapy, we continue to have a need for some basic research to be conducted [...] Full article

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Int. J. Orofac. Myol. Myofunct. Ther., Volume 43, Issue 1 (November 2017) – 6 articles

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