Safavi Seyed Mohammadreza, Sefidroodi Aliakbar, Nouri Mahtab, Eslamian Ladan, Kheirieh Sanam, Bagheban Alireza Akbarzadeh
Dental Research Center, Shaheed Beheshti University of Medical Sciences, School of Dentistry, Tehran, Iran.
Aust Orthod J. 2009 May;25(1):8-11.
To assess orthodontic treatment need in a Tehran high school population.
The Dental Health Component (DHC) of the Index of Orthodontic Treatment Need (IOTN) was used by 21 trained examiners to estimate the orthodontic treatment need in 5200 Tehran high school students. The children, between 14 and 16 years of age, attended 84 high schools in 21 educational areas in Tehran and the neighbouring city of Rey. Children who had had orthodontic treatment and those who had not been treated were assessed. Children under treatment were excluded. Major components of the DHC were recorded.
When the DHC is considered, 2 per cent of Tehran school children showed 'Extreme need', 18 per cent 'Severe need', 23 per cent 'Moderate need', 37 per cent 'Little need' and 20 per cent had 'No need' of orthodontic treatment. In those needing treatment (Grades 4 and 5) common deviations were hypodontia, contact point displacements, crossbites and increased overjet. A small number of the subjects (N=36) who had received orthodontic treatment required further treatment. Of these, 18 subjects (50 per cent) had hypodontia, 10 subjects (28 per cent) had contact point displacements and 4 subjects (11 per cent) had increased overjet.
Twenty per cent of Tehran high school students needed orthodontic treatment (IOTN Grades 4 and 5).
评估德黑兰一所高中学生的正畸治疗需求。
21名经过培训的检查人员使用正畸治疗需求指数（IOTN）的口腔健康组成部分（DHC）来评估5200名德黑兰高中生的正畸治疗需求。这些年龄在14至16岁之间的儿童就读于德黑兰和邻近城市雷伊的21个教育区域内的84所高中。对接受过正畸治疗的儿童和未接受过治疗的儿童进行了评估。正在接受治疗的儿童被排除在外。记录了DHC的主要组成部分。
考虑DHC时，2%的德黑兰学童显示“极度需要”正畸治疗，18%“严重需要”，23%“中度需要”，37%“轻度需要”，20%“不需要”正畸治疗。在需要治疗的儿童（4级和5级）中，常见的牙颌畸形有牙缺失、接触点移位、反牙合和覆盖增加。少数接受过正畸治疗的受试者（N = 36）需要进一步治疗。其中，18名受试者（50%）有牙缺失，10名受试者（28%）有接触点移位，4名受试者（11%）有覆盖增加。
20%的德黑兰高中生需要正畸治疗（IOTN 4级和5级）。
