Limeira Adriana Bezerra, Aguiar Carlos Menezes, de Lima Bezerra Niedje Siqueira, Câmara Andréea Cruz
Department of Prosthetics and Oral and Facial Surgery, School of Dentistry, Federal University of Pernambuco, in Recife, Pernambuco, Brazil.
Department of Clinical and Preventive Dentistry, School of Dentistry, Federal University of Pernambuco, Brazil; Institute of Integrative Medicine Professor Fernando Figueira, in Recife, Pernambuco, Brazil.
J Dent Child (Chic). 2014 Sep-Dec;81(3):122-7.
The purpose of this study was to evaluate the association between breast-feeding duration and the subsequent occurrence of posterior crossbite in Brazilian children.
A cross-sectional study was conducted involving 714 six- to nine-year-old children. A questionnaire was completed by mothers or guardians of the children concerning the length of time they were exclusively breast-fed and the breast-feeding duration. A clinical examination of each child was conducted to detect posterior crossbite. Data were analyzed using Pearson's chi-square test at a five percent significance level.
There was a posterior crossbite prevalence of approximately 15 percent. There was no statistically significant association between posterior crossbite and age or gender ( P >.05). The prevalence of posterior crossbite was higher among children who were not breast-fed (28 percent) than among breast-fed children (13 percent). There was a significant association between posterior crossbite and the length of time that children were exclusively breast-fed and the breast-feeding duration ( P <.05 percent).
The prevalence of posterior crossbite gradually decreased as exclusive breast-feeding duration increased, and there was a relationship between breast-feeding duration and the occurrence of posterior crossbite.
本研究旨在评估巴西儿童母乳喂养持续时间与随后发生后牙反合之间的关联。
开展了一项横断面研究，纳入714名6至9岁儿童。由儿童的母亲或监护人填写一份问卷，内容涉及他们纯母乳喂养的时间长度和母乳喂养持续时间。对每个儿童进行临床检查以检测后牙反合。使用Pearson卡方检验在5%的显著性水平下对数据进行分析。
后牙反合患病率约为15%。后牙反合与年龄或性别之间无统计学显著关联（P>.05）。未母乳喂养儿童的后牙反合患病率（28%）高于母乳喂养儿童（13%）。后牙反合与儿童纯母乳喂养的时间长度和母乳喂养持续时间之间存在显著关联（P<.05%）。
随着纯母乳喂养持续时间增加，后牙反合患病率逐渐降低，且母乳喂养持续时间与后牙反合的发生之间存在关联。
