Department of Pediatric Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Brazil;, Email:
Faculdade Arnaldo Janssen, Belo Horizonte, Minas Gerais, Brazil.
J Dent Child (Chic). 2024 Jan 15;91(1):10-17.
To evaluate the chronology of the eruption of primary mandibular central incisors in infants born preterm and with low weight (PLBW) and its association with weight/length ratio for gestational age (GA) at birth, individual characteristics and hospitalization at birth. A cohort of 46 infants was followed at a multidisciplinary reference center at a university hospital in Belo Horizonte, Brazil. The inclusion criteria were infants born preterm with low/very low/extreme low birth weight and at least four months of age. Oral clinical examinations were carried out by a calibrated dentist for a total of eight months, with a one-month interval between each examination, to verify the chrono- logy of eruption of the primary mandibular central incisors. Caregivers completed a sociodemographic and health questionnaire. Data on neonatal hospitalization were collected from medical records. Data were analyzed with the Kaplan-Meier method and log rank test, and bivariate analysis was done using the Mann-Whitney method and Kruskal-Wallis test ( <0.05). The average age at eruption of primary lower central incisors was 11 months for both sexes. No association was found between tooth eruption and child hospitalization or individual characteristics ( >0.05). Infants large for gestational age had earlier tooth eruption (9.3±1.41 months) than infants small for gestational age (13.6±3.29 months; <0.05). The most likely age for the eruption of the first primary teeth in infants born preterm and with low weight was 11 months, and there was no influence of individual characteristics and hospitalization at birth. Small-for-gestational age infants experienced delayed tooth eruption compared to large-for-GA infants.
评估早产儿和低体重儿（PLBW）下颌中切牙萌出的时间顺序及其与出生时胎龄的体重/身长比值（GA）、个体特征和出生时住院情况的关系。 方法：巴西贝洛奥里藏特一所大学附属医院的多学科参考中心对 46 名婴儿进行了随访。纳入标准为早产儿、低体重/极低体重/超低体重，且至少 4 月龄。由经过校准的牙医进行口腔临床检查，共进行了 8 个月，每次检查间隔 1 个月，以确定下颌中切牙萌出的时间顺序。照顾者填写了一份社会人口学和健康问卷。从病历中收集新生儿住院数据。采用 Kaplan-Meier 法和对数秩检验进行数据分析，采用 Mann-Whitney 法和 Kruskal-Wallis 检验进行二变量分析（ <0.05）。 结果：男女下颌中切牙萌出的平均年龄均为 11 个月。牙齿萌出与儿童住院或个体特征之间无相关性（ >0.05）。与适于胎龄儿相比，大于胎龄儿的婴儿萌出时间更早（9.3±1.41 个月）（ <0.05）。出生时体重低的早产儿中切牙萌出的最可能年龄为 11 个月，个体特征和出生时住院情况无影响。与适于胎龄儿相比，小于胎龄儿的婴儿出牙时间延迟。
