Luz Cristiane L F, Garib Daniela G, Arouca Rafael
Department of Orthodontics, PrevOdonto Study Center, Rio de Janeiro, Brazil.
Am J Orthod Dentofacial Orthop. 2006 Oct;130(4):531-4. doi: 10.1016/j.ajodo.2006.06.011.
In this study, we examined the relationships among breastfeeding duration, nonnutritive infantile sucking habits, Class II facial patterns with mandibular retrusion, and Class II dental relationships.
A sample of 249 children in the mixed dentition was examined by 2 orthodontists. Data about the duration of breastfeeding and nonnutritive sucking habits were obtained by written questionnaires answered by the parents.
The chi-square test did not indicate a statistically significant association between breastfeeding duration and mandibular deficiency or Class II malocclusion. However, statistically significant associations were found between short breastfeeding duration (<6 months) and nonnutritive sucking habits, and between nonnutritive sucking habits and Class II malocclusions.
These findings point to the hypothesis that nonnutritive sucking habits may work as a dominant variable in the relationship between breastfeeding duration and the occurrence of Class II malocclusion. However, the prevention of mandibular deficiency should not be listed as one of the advantages of breastfeeding.
在本研究中，我们探讨了母乳喂养持续时间、非营养性婴儿吸吮习惯、伴有下颌后缩的II类面型以及II类牙关系之间的关联。
由2名正畸医生对249名处于混合牙列期的儿童进行检查。通过家长填写的问卷获取母乳喂养持续时间和非营养性吸吮习惯的数据。
卡方检验未显示母乳喂养持续时间与下颌发育不足或II类错牙合之间存在统计学上的显著关联。然而，发现母乳喂养持续时间短（<6个月）与非营养性吸吮习惯之间、非营养性吸吮习惯与II类错牙合之间存在统计学上的显著关联。
这些发现指向一个假设，即非营养性吸吮习惯可能是母乳喂养持续时间与II类错牙合发生之间关系中的一个主导变量。然而，预防下颌发育不足不应被列为母乳喂养的优势之一。
