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:: Volume 21, Issue 4 (Winter (Special Issue) 2004) ::
J Dent Sch GYEAR__, 21(4): 661-670 Back to browse issues page
Evaluation of occlusion in 3-5 year old nurseryschools children in Tehran–2003
Mina Biria Corresponding Author: Dr. * , Gholamreza Eslami Amirabadi Dr., Mona Rahmani Dr.
Assistant Prof.
Abstract:   (5792 Views)

Background & Aim: The characteristics of occlusion in primary dentition differ among different populations. The purpose of this study was to evaluate the occlusion characteristics of primary dentition in a group of 3 – 5 year old nursery schools of Tehran & also to evaluate these relationships with age & sex separation.

Method & Materials: The study has been done in a descriptive & cross-sectional way. Our major media for gathering the data were questionnaires & examining among the community of 3-5 year children presenting at nurseryschools that were selected according to the cluster sampling from nurseryschools of Tehran in year 2003. The community was constituted of 811 children of 3 to 5 years (270 of 3 year, 270 of 4 year & 271 of 5 year).

Results: The prevalence of flush terminal plane in the study group was 55.4%, mesial step was 36.8% & distal step was 78%. CLI canine relationship was seen in 77.3%, CLII in 13.3% & CLIII in 9.4%. Normal overbite was seen in 78.7% & normal overjet was seen in 79.2%. Prevalence of crowding was 9.9% in the mandible & 1.2% in the maxilla. Unilateral primate space in the maxilla was significantly more in boys than girls (P=0.024). In 38% of the children, space was seen between all the incisors & in 14.5% there was no space between them. Anterior crossbite was seen in 3.3% & posterior crossbite was seen in 5.7%. Infraocclusion was seen in 9 children & double teeth were seen in 4. In 12.3% of children, midline discrepancy was seen. The results of the studies about primary occlusion are variable. This difference may be related to many factors such as kind of the study, number of examined children, the using criteria, ethnic groups, kind of diet & so on.

Conclusion: 1- In more than half of the samples FTP molar relationship was seen. 2-The lack of primary space in maxilla in girls was significantly more than boys. 3-The interdental spaces would have arised with age & also were more in boys.

J Dent Sch 2004 21(Special Issue): 661

Keywords: Prevalence, Primary dentition, Occlusion, Nurseryschools children
Full-Text [PDF 290 kb]   (927 Downloads)    
Type of Study: Original Article | Subject: Special
Received: 2006/09/6
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Biria M, Eslami Amirabadi G, Rahmani M. Evaluation of occlusion in 3-5 year old nurseryschools children in Tehran–2003. J Dent Sch. 2004; 21 (4) :661-670
URL: http://jds.sbmu.ac.ir/article-1-625-en.html


Volume 21, Issue 4 (Winter (Special Issue) 2004) Back to browse issues page
مجله دانشکده دندانپزشکی دانشگاه علوم پزشکی شهید بهشتی Shahid Beheshti University Dental Journal
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