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Normalization of Masticatory Function of a Scissors-Bite Child with Primary Dentition: A Case Report

2008; Taylor & Francis; Volume: 26; Issue: 2 Linguagem: Inglês

10.1179/crn.2008.020

2151-0903

Emi Inada, Issei Saitoh, Norihito Ishitani, Yoko Iwase, Youichi Yamasaki,

Temporomandibular Joint Disorders

AbstractNormalization of mandibular function in children is important for normal orofacial development because their function is not still matured. This case report examined jaw movement during chewing in a young patient with unilateral scissors-bite. He could hardly chew on the affected side, preferring to chew only on the unaffected side, and his minimum opening position was initially unstable, i.e., he had two positions before active treatment. Retention did not stabilize his minimal opening position and his dual-bite was not corrected. His minimal opening position was stabilized after equipping his upper canines with a resin cap. Although orthodontic treatment morphologically improved the patient’s malocclusion, his function did not improve. Normal jaw movement on both sides was achieved after interfering with his old chewing pattern. Because normalization is needed for acquisition of normal function in children, long-term observations of their growth and functional changes are necessary after orthodontic treatment. Additional informationNotes on contributorsEmi InadaDr. Emi Inada received her D.D.S. degree in 2004 from the Faculty of Dental Science, Kagoshima University, Japan. She fulfilled her two-year internship at the Kagoshima University Hospital. Since 2006 she has worked for the Section of Pediatric Dentistry, Division of Oral Health, Growth, and Development, Kagoshima University Graduate School of Dental Science. Her main research interest is development of mandibular function in children with primary dentition.Issei SaitohDr. Issei Saitoh received his D.D.S. degree from Faculty of Dental Science, Kyushu University, Japan in 1999, and a Ph.D at the same university in 2003. He received the Award for Young Scientist from the Japanese Society of Stomatognathic Function in 2004. He fulfilled his internship at the Kyushu University Hospital for two years. He attends the Department of Pediatric Dentistry, Field of Developmental Medicine, Health Research Course, Graduate School of Medical and Dental Sciences, Kagoshima University as an assistant professor since 2005. His research interest is development of oral function in children with primary dentition.Norihito IshitaniDr. Norihito Ishitani received his D.D.S. degree from Faculty of Dental Science, Kagoshima University, Japan in 1998. He completed his two-year internship at the Kagoshima University Hospital. He attends the Department of Pediatric Dentistry, Field of Developmental Medicine, Health Research Course, Graduate School of Medical and Dental Sciences, Kagoshima University as an assistant professor since 2001. He received a Ph.D at the same university and a Pedodontist Certificate from the Japanese Society of Pediatric Dentistry in 2005.Yoko IwaseDr. Yoko Iwase received her D.D.S. degree in 1997 from Faculty of Dentistry, Kyushu University. She subsequently worked at the Section of Pediatric Dentistry, Division of Oral Health, Growth, and Development, Kyushu University Graduate School of Dental Science from 1997 to 2001. She received her Ph.D. at the same university and a Pedodontist Certificate from the Japanese Society of Pediatric Dentistry in 2003. Currently, she is working as a resident in the Department of Dental Anesthesia, Kagoshima University Medical and Dental Hospital. Her research interest is occlusal contacts during masticatory movement in children with primary dentition.Youichi YamasakiDr. Youichi Yamasaki received his D.D.S. degree in 1983 and a Ph.D. degree in 1989 from the Faculty of Dentistry in Kyushu University in Fukuoka, Japan. He worked as an assistant professor in the pediatric dental clinic at Kyushu University Dental Hospital. He has been a professor and chairman of Kagoshima University Graduate School of Medical and Dental Sciences since 2003. Dr. Yamasaki is studying the relationship between stomatognathic function and the effects of early treatment for malocclusion in children with primary and mixed dentition.