Department of Morphology, Genetics, Orthodontics and Pediatric Dentistry, Araraquara School of Dentistry, UNESP-Universidade Estadual Paulista, Araraquara, São Paulo, Brazil.
Department of Pediatric Dentistry, School of Dentistry, Universidad CES, Medellín, Antioquia, Colombia.
ScientificWorldJournal. 2022 Dec 9;2022:4743252. doi: 10.1155/2022/4743252. eCollection 2022.
The aim of this study was to evaluate the prevalence evolution rate of MIH (molar-incisor hypomineralization) after a 6-year period in Araraquara/SP, Brazil. This population-based study evaluated MIH in 545 schoolchildren (6-12 years of age) and other associated alterations, dental caries and dental fluorosis (DF). A semistructured questionnaire was sent to the schoolchildren's parents/guardians with the purpose of identifying the socioeconomic profile. Associations between MIH and the clinical characteristics were analyzed by the Poisson analysis of regression with robust variance, estimating the RPc (crude prevalence ratio) with CI 95%. The level of significance of 5% was adopted. The MIH prevalence in Araraquara/SP in 2016 was 14.3% ( = 78), and at this time, an increase of 2% was observed, in comparison with the data of the first prevalence study conducted in 2010 (12.3%). The mild degree compromise was the most prevalent diagnosis in the affected teeth (82.0%). Among children with MIH, the mean number of affected teeth was 2.78. Of the total number of children with MIH, 32.0% presented alterations in both first permanent molars and permanent incisors. There is no significant association between MIH and dental caries experience on permanent dentition (PRc = 1.141; CI 95% 0.709-1.835) or on primary dentition (PR = 1.132; CI 95% 0.749-1.709). Children with MIH presented significantly less prevalence of dental fluorosis (PR = 0.505; CI 95% 0.268-0.950). There is no association between MIH and monthly Brazilian minimal wage income (PR = 1.130; CI 95% 0.655-1.949). It was concluded that the number of MIH cases had increased, revealing a greater need for defining the etiological factors and establishing a correct diagnosis to make it possible to institute early intervention.
本研究旨在评估巴西阿雷格里港/SP 地区经过 6 年时间后 MIH（磨牙-切牙矿化不全）的流行率演变。这是一项基于人群的研究，评估了 545 名（6-12 岁）学童的 MIH 以及其他相关改变，包括龋齿和氟斑牙（DF）。研究人员向学童的家长/监护人发送了一份半结构式问卷，以确定社会经济状况。采用回归泊松分析的稳健方差分析 MIH 与临床特征之间的关联，用 95%CI 估计 RPc（粗患病率比）。采用 5%的显著性水平。2016 年阿雷格里港/SP 的 MIH 患病率为 14.3%（ = 78），与 2010 年首次患病率研究的数据（12.3%）相比，观察到增加了 2%。在受影响的牙齿中，最常见的诊断是轻度损害（82.0%）。在患有 MIH 的儿童中，平均受影响的牙齿数为 2.78 颗。在患有 MIH 的儿童中，有 32.0%的儿童的第一恒磨牙和恒切牙都有改变。MIH 与恒牙列龋齿史（PRc = 1.141；95%CI 0.709-1.835）或乳牙列龋齿史（PRc = 1.132；95%CI 0.749-1.709）之间无显著关联。患有 MIH 的儿童的氟斑牙患病率显著降低（PRc = 0.505；95%CI 0.268-0.950）。MIH 与每月巴西最低工资收入之间无关联（PRc = 1.130；95%CI 0.655-1.949）。结论是 MIH 病例数量增加，这表明更需要确定病因因素并做出正确诊断，以便能够进行早期干预。
