Sudhir Kudlur Maheswarappa, Suresh Sanikommu, Prashant Goudar Manjunath, Reddy Vulavala Venkata Subba, Shafiulla Mohammed, Chandu Gourapura Natraj
Department of Public Health Dentistry, Narayana Dental College and Hospital, Nellore, Andhra, Pradesh, India.
Oral Health Prev Dent. 2012;10(2):167-74.
To describe the different patterns of the intraoral distribution of enamel fluorosis in permanent dentition.
This cross-sectional analysis was conducted in Nalgonda district of Andhra Pradesh, India. A group of 1000 school children aged 13-15 years were selected by stratified cluster sampling from four different areas with different levels of naturally occurring fluoride in the drinking water. Fluorosis was recorded using the Thylstrup and Fejerskov index (TFI).
The prevalence of fluorosis (TFI score >=1) was 100% at all four fluoride levels. This study revealed two patterns of fluorotic enamel changes in dentition. In high fluoride areas, incisors exhibited lower TFI values than canines, premolars and molars, with the maximum affected being second molars followed by first molars. In low fluoride areas, a steeper profile of dental fluorosis, starting from incisors and first molars through canine and premolars to second molars, was noticed.
With the exception of permanent second molars and permanent first molars in high fluoride communities, the intraoral distribution of different degrees of dental fluorosis was related to the completion of primary enamel formation.
描述恒牙列中氟斑牙在口腔内的不同分布模式。
本横断面分析在印度安得拉邦的纳尔贡达地区进行。通过分层整群抽样，从四个饮用水中天然氟含量不同的地区选取了一组1000名13 - 15岁的学童。使用蒂尔斯楚普和费耶斯科夫指数（TFI）记录氟斑牙情况。
在所有四个氟含量水平下，氟斑牙（TFI评分≥1）的患病率均为100%。本研究揭示了牙列中氟斑牙釉质变化的两种模式。在高氟地区，前牙的TFI值低于尖牙、前磨牙和磨牙，受影响最大的是第二磨牙，其次是第一磨牙。在低氟地区，发现氟斑牙的分布情况是从门牙和第一磨牙开始，经尖牙和前磨牙到第二磨牙，呈更陡峭的分布态势。
除高氟社区的恒牙第二磨牙和恒牙第一磨牙外，不同程度氟斑牙在口腔内的分布与原发性釉质形成的完成情况有关。
