The Need for Orthodontic Treatment among Vietnamese School Children and Young Adults

Abstract

Objective. The aim of this study was to evaluate the need for orthodontic treatment among 12-year-old school children and 18-year-olds from Da Nang, Vietnam. Basic Research Design. A random representative sample of 200 12-year-old children from primary schools in Da Nang city was gathered. In addition, 200 18-year-old students were randomly selected from among the 4000 students studying at Da Nang University of Medical Technology and Pharmacy, Vietnam. All the subjects were evaluated according to Angle's molar relationship, the presence of malocclusion, and the components of the Index of Orthodontic Treatment Need (Dental Health Component, DHC, and Aesthetic Component, AC). Results. The DHC of index of orthodontic treatment need (IOTN) for 12-year-olds was in 60% of cases no or little, in 21% of cases moderate, and in 19% of cases definitive, while the prevalence of moderate and definitive need for treatment among the 18-year-olds was 24% and 30.5%, respectively. The prevalence of class III malocclusion, contact point displacement, and crossbite was higher in 18-year-olds than among the 12-year-olds, while the prevalence of increased overjet and increased overbite had decreased in 18-year-olds compared to the group of 12-year-olds. Conclusions. There is a strong need for orthodontic treatment in Vietnam's population. The need for orthodontic treatment was determined by contact point displacement, crossbite, increased overjet, and increased overbite.

Prevalence of Need of Orthodontic Treatment in 7–16-Year-Old School Children in Udaipur City, India

“…The results of our study were in agreement with the reports of the previous studies of the similar nature comprising different population groups (15,16,21,23,24,27,30). In contrast, the lesser prevalence of Grade 4 (6.4%) and Grade 5 (2.6%) was reported in Iranian school children (19).…”

“…Researches around the world have used IOTN to determine the need of malocclusion treatment in different population groups (13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28)(29)(30). DHC of IOTN is considered as an objective and synthetic method of verifying the malocclusion status and need of orthodontic treatment.…”

“…No significant statistical difference was noted for the age-based comparison of DHC grades of IOTN in the current sample. The (15,16,21,22). Nevertheless, a highly significant statistical difference was noted for different grades for the same age group, with Grades 1 and 3 being most commonly prevalent for the all the age groups.…”

Analysis of the prevalence of dental and occlusal anomalies in children and adolescents in Poland and elsewhere – review of the publications from the last 10 years

“…The examination of the Indian children from the Maharashtra region, aged 6-13, showed malocclusion in 33% of the subjects (Kumar et al 2014). In a group of 200 Vietnamese pupils, aged 12, and a group of 200 pupils, aged 18, class I defect was diagnosed in 67% jointly in both groups, class II defect in 17.5%, increased overjet in 36.3% and increased overbite in 26.3% (Nguyen et al 2014).…”

Association between maternal education and malocclusion in Mongolian adolescents: a cross-sectional study

“…9 Approximately 30% of schoolchildren were considered likely to have malocclusion requiring orthodontic treatment. We assumed that high and low maternal education levels would be found in a proportion30 of 1:2.…”