Orthodontic treatment of a patient with unilateral orofacial muscle dysfunction: The efficacy of myofunctional therapy on the treatment outcome

Yasuyo Sugawara, Yoshihito Ishihara, Teruko Takano-Yamamoto, Takashi Yamashiro, Hiroshi Kamioka

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The orofacial muscle is an important factor in the harmony of the occlusion, and its dysfunction significantly influences a patient's occlusion after craniofacial growth and development. In this case report, we describe the successful orthodontic treatment of a patient with unilateral orofacial muscle dysfunction. A boy, 10 years 0 months of age, with a chief complaint of anterior open bite, was diagnosed with a Class III malocclusion with facial musculoskeletal asymmetry. His maxillomandibular relationships were unstable, and he was unable to lift the right corner of his mouth upon smiling because of weak right orofacial muscles. A satisfactory occlusion and a balanced smile were achieved after orthodontic treatment combined with orofacial myofunctional therapy, including muscle exercises. An acceptable occlusion and facial proportion were maintained after a 2-year retention period. These results suggest that orthodontic treatment with orofacial myofunctional therapy is an effective option for a patient with orofacial muscle dysfunction.

Original languageEnglish
Pages (from-to)167-180
Number of pages14
JournalAmerican Journal of Orthodontics and Dentofacial Orthopedics
Volume150
Issue number1
DOIs
Publication statusPublished - Jul 1 2016

ASJC Scopus subject areas

  • Orthodontics

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