Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil.
Discipline of Public Health, School of Medicine, Federal University of Fronteira Sul, Chapecó, Brazil.
Int J Paediatr Dent. 2020 Jan;30(1):27-34. doi: 10.1111/ipd.12579. Epub 2019 Oct 18.
Molar incisor hypomineralization (MIH) is a developmental enamel defect characterized by well-demarcated discolorations frequently detected in molars, causing pain and esthetic alterations.
To assess the interests of Google users on MIH-related information.
Digital data were collected in Google Trends through two search strategies, 'molar incisor hypomineralization' (topic) and 'MIH' (search term), between January 2004 and November 2018. ARIMA models were applied to analyze trends of curves and to predict the activity of Google users during 12 months. Autocorrelation and partial autocorrelation (ACF/PACF) plots were used to detect trends in the variation of relative search volume (RSV) related to search strategies over time. The most popular queries were analyzed qualitatively, whereas geographical heat maps were retrieved to determine search volumes according to countries (P < .05).
Gradual increasing trends were detected, with forecasts indicating similar levels of RSVs to the period between December 2017 and November 2018. Most popular queries and topics were associated with MIH diagnosis, being retrieved predominantly in European countries.
The activity of Google users related to this condition is maintained low, with a reduced intensification over time, suggesting that the awareness on MIH is probably confined to dentists and affected people worldwide.
磨牙和切牙釉质发育不全（MIH）是一种发育性牙釉质缺陷，其特征为在磨牙中经常发现的界限分明的变色，导致疼痛和美观改变。
评估 Google 用户对 MIH 相关信息的兴趣。
通过两种搜索策略“磨牙和切牙釉质发育不全”（主题）和“MIH”（搜索词），在 2004 年 1 月至 2018 年 11 月期间在 Google Trends 中收集数字数据。应用 ARIMA 模型分析曲线的趋势并预测 12 个月内 Google 用户的活动。自相关和部分自相关（ACF/PACF）图用于检测与随时间变化的搜索策略相关的相对搜索量（RSV）变化的趋势。定性分析最受欢迎的查询，而地理热图则用于根据国家/地区确定搜索量（P<.05）。
检测到逐渐增加的趋势，预测表明与 2017 年 12 月至 2018 年 11 月期间的 RSV 水平相似。最受欢迎的查询和主题与 MIH 诊断相关，主要在欧洲国家检索到。
与这种情况相关的 Google 用户的活动保持低水平，随着时间的推移，活动强度降低，这表明对 MIH 的认识可能仅限于全球范围内的牙医和受影响人群。
