Kariya Pratik, Tandon Shobha, Singh Sweta, Tewari Nitesh
Department of Paedodontics and Preventive Dentistry, KMSDCH, Sumandeep Vidyapeeth, Vadodara, Gujarat, India.
Centre for Paediatric Dentistry & Orthodontics Studies, Faculty of Dentistry, Universiti Teknologi MARA (UiTM), Selangor, Malaysia.
J Investig Clin Dent. 2018 Feb;9(1). doi: 10.1111/jicd.12266. Epub 2017 Mar 27.
The aim of the present study was to evaluate the timing and sequence of the eruption of deciduous teeth in Indian children.
This cross-sectional study focused on children aged 5-36 months. One hospital was randomly selected from four geographic zones of the city. A total of 400 children from each hospital, fulfilling the inclusion criteria, constituted the sample. The examination was carried out by a single, trained examiner. The tooth was recorded as "present" or "absent" on the day of examination. The mean age of emergence was calculated using a probit model. Independent sample t-test was used to assess the statistical significance of differences in the mean age of tooth emergence.
The deciduous mandibular central incisor was the first tooth to erupt in the oral cavity (8.15±1.69 months). Girls showed delayed eruption compared to boys; however, no interarch variation was observed in the mean age of tooth eruption. There was also no difference in the sequence of eruption of deciduous teeth, as reported in other studies.
The present study establishes a chronological table for the eruption of deciduous teeth in Indian children. There was delayed eruption of deciduous teeth when compared to the reference ranges of Western populations.
本研究旨在评估印度儿童乳牙萌出的时间和顺序。
这项横断面研究聚焦于5至36个月大的儿童。从该市四个地理区域中随机选取一家医院。每家医院共有400名符合纳入标准的儿童构成样本。检查由一名经过培训的单一检查者进行。在检查当天记录牙齿为“存在”或“缺失”。使用概率模型计算萌出的平均年龄。采用独立样本t检验评估牙齿萌出平均年龄差异的统计学意义。
乳牙下颌中切牙是口腔中最早萌出的牙齿（8.15±1.69个月）。女孩的萌出时间比男孩延迟；然而，在牙齿萌出的平均年龄方面未观察到牙弓间差异。乳牙萌出顺序也与其他研究报告的情况无差异。
本研究建立了印度儿童乳牙萌出的时间表。与西方人群的参考范围相比，乳牙萌出时间延迟。
