| THE DENTAL MATURATION OF MAXILLA IN CHILDREN WITH ANTERIOR CROSSBITE OF MAXILLARY UNDERGROWTH TYPE |
| 부산대학교 치의학전문대학원 소아치과학교실 |
| 상악 열성장형 전치부 반대교합 아동에 있어서의 상악 치아 성숙도 |
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안울진, 노홍석, 정태성, 김신 |
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부산대학교 치의학전문대학원 소아치과학교실 |
Correspondence:
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Received: 10 February 2011 • Accepted: 9 May 2011 |
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| Abstract |
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In the process of assessing the children with anterior crossbite in early mixed dentition, it has frequently been detected that the stronger the skeletal pattern of the malocclusion is, the more markedly delayed the development and eruption of maxillary teeth are. If the anteroposterior characteristics of craniofacial skeleton has any relationship with dental maturation, the evaluation of dental development and eruption was thought to be able to contribute to early diagnosis of crossbite in children. This study was performed for the purpose of elucidating the relationship between dental maturation of maxillary teeth and some cephalometric values in children with anterior crossbite of maxillary undergrowth type in early mixed dentition. Among the children in Hellman dental age IIA and IIC who attended the Pediatric Dental Clinic of Pusan National University Hospital with orthodontic problems, cases with Class III malocclusion were classified and 50 cases of maxillary undergrowth type and type with normal maxilla respectively were randomly selected and studied as subjects. From their lateral cephalographs and panoramic radiographs, their anteroposterior skeletal features, the dental maturity and eruption rate were obtained of each group and data were analyzed to yield the results as follows: 1. Comparing the maturity of maxillary teeth of both groups, only the first molars of maxillary undergrowth group showed significantly slower development and eruption (p<0.05). 2. There was high correlation between maturation of maxillary 1st molar and chronological age(p<0.05). 3. Among the parameters of anteroposterior relationship of skeletal pattern in maxilla and mandible. Wits was revealed as a useful index to predict both the calcification and eruption rate of the 1st molars whereas SNA was to eruption rate(p<0.05). |
| Key Words:
Dental maturation, Maxillary undergrowth, Anterior crossbite, Early mixed dentition, Maxillary first molar |
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