Journal of Yeungnam Medical Science

Original Articles

Trends in Malocclusion Patients of Yeungnam University Hospital.: Sung Ho Chung, Hee Kyung Lee; Yeungnam Univ J Med. 2006;23(1):71-81. Published online June 30, 2006; DOI: https://doi.org/10.12701/yujm.2006.23.1.71

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BACKGROUND
This study was done to better understand patterns, trends and local distribution patterns of malocclusion so that we can provide adequate information to patients, to help make the appropriate diagnosis and therapeutic plans, and to assess the future directions of malocclusion treatment. MATERILAS AND METHODS: Malocclusion patterns, distribution and trends of visiting patients were examined in 993 malocclusion patients who had been evaluated and diagnosed at the Department of Dentistry, Yeungnam University Hospital over a 10-year period from 1995 to 2004. RESULTS: The number of visiting patients per year showed an increasing trend and the visit rate was 1.28 time-higher in females(56.1%) than in males(43.9%). Age distribution showed that the 7-12 year-old group was the largest (36.7%). Geographic distribution showed the majority of patients were from the Dalseo district(28.2%). Angle's malocclusion classification revealed that class III was the largest(38.4%). Crowding was the chief complaint in the highest percentage of patients(33.9%). The therapeutic method used was the fixed appliance in 61% of cases and a combination with extraction in 30.8%. CONCLUSIONS: The availability of dental services can accommodate orthodontic needs adequately as well as obtain reliable quantitative information regarding the characteristics of orthodontic patients.

Citations

Citations to this article as recorded by

Distribution of Pediatric Malocclusion Patients in Seoul National University Dental Hospital
Sophia Rhee, Ji-Soo Song, Teo Jeon Shin, Young-Jae Kim, Jung-Wook Kim, Ki-Taeg Jang, Hong-Keun Hyun
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY.2021; 48(2): 140. CrossRef
Estimation of the prevalence of malocclusion on the basis of nationwide oral health examinations of pre-adolescent and adolescent students during 2012–2017
Mihee Hong, Hee-Moon Kyung, Hyo-Sang Park, Won-Jae Yu, Seung-Hak Baek
The Korean Journal of Orthodontics.2020; 50(3): 197. CrossRef
Five-year investigation of a large orthodontic patient population at a dental hospital in South Korea
Yongxu Piao, Sung-Jin Kim, Hyung-Seog Yu, Jung-Yul Cha, Hyoung-Seon Baik
The Korean Journal of Orthodontics.2016; 46(3): 137. CrossRef

A Lateral Cephalometric Study of Maxillofacial Morphologic Features in Class III Malocclusion Children.: Woo Ill Sohn, Ic Jun Chang, Jae Chul Song, Byung Rho Chin; Yeungnam Univ J Med. 2001;18(2):208-214. Published online December 31, 2001; DOI: https://doi.org/10.12701/yujm.2001.18.2.208

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Abstract PDF: BACKGROUND
When we make treatment plan of class III malocclusion children, it is difficult to determine whether we treat it with orthognathic surgery or without orthognathic surgery. To determine that, we must consider many factors, such as cephalometric analysis, growth pattern, family history, and skeletal age. A Harvold cephalometric analysis is useful in determining the amount of discrepancy by comparing the maxillary unit length with mandibular unit length. We tried this study to help the decision of treatment planning in class III malocclusion children by comparison in class III malocclusion and normal occlusion children using a Harvold analysis. MATERIALS AND METHODS: The materials for this study consisted of 20 class III malocclusion children. Cephalometric tracing and measurements were performed by one investigator. The control group consisted of 18 normal occlusion children and lateral cephalograms were obtained from 8.5 to 14.5 years old children biannually. The relationships between class III malocclusion group and normal occlusion group were evaluated statistically. RESULTS: The lower anterior facial heights between two groups were not significantly different, although the lower anterior facial heights of class III malocclusion group was higher than those of normal occlusion group in all age groups. The Maxillary-mandibular unit length differences of class III malocclusion group were significantly higher than those of normal occlusion group(p < 0.05). CONCLUSION: A Harvold analysis was useful to make treatment planning for class III malocclusion children.

Soft Tissue Change After Single Jaw(mandible) Surgery in Skeletal Class III Malocclusion.: Kwang Soo Park, Hee Kyung Lee, Byung Rho Chin; Yeungnam Univ J Med. 1997;14(1):197-208. Published online June 30, 1997; DOI: https://doi.org/10.12701/yujm.1997.14.1.197

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Abstract PDF

The purpose of this study was to evaluate the amount and interrelationship of the soft and hard tissue change after mandibular setback surgery in skeletal Class III malocclusion. The sample consisted of 25 adult patient (12 male and 13 female) who had severe anteropostrior skeletal discepancy. These patient had received presurgical orthodontic treatment and surgical treatment which is bilateral sagittal split ramus osteotomy. The presurgical and postsurgical lateral cephalograms were evaluated. The computerized statistical analysis was carried out with SPSS/PC program. The result were as follows: 1. After mandibular bilateral sagittal split ramus osteotomy, lower facial soft tissue horizontal posterior changes were high significance value. but vertical soft tissue changes were low significance value. 2. After mandibular bilateral sagittal split ramus osteotomy, relative upper lip protrusion increased(p<0.01) and relative lower lip protrusion decreased(p<0.01) and lower facial soft tissue thickness increased(p<0.01).

Citations

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Soft Tissue Changes After Posterior Impaction and Setback of the Maxilla With Le Fort I Osteotomy in Skeletal Class III Patients
Hyeong-Min Jeon, Jin-Young Choi, Seung-Hak Baek
Journal of Craniofacial Surgery.2014; 25(4): 1495. CrossRef

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