Open AccessTongue Thrust in Breast-Fed and Bottle-Fed School Children: A Cross-Cultural Investigation
Author(s) -
Elnita Stanley,
Dale J. Lundeen
Publication year - 1980
Publication title -
the international journal of orofacial myology
Language(s) - English
Resource type - Journals
eISSN - 2694-2526
pISSN - 0735-0120
DOI - 10.52010/ijom.1980.6.1.2
Subject(s) - swallowing , tongue , navajo , medicine , significant difference , population , bottle , demography , dentistry , geography , philosophy , linguistics , environmental health , archaeology , pathology , sociology
To investigate the frequency of tongue-thrust swallowing in a breast-fed population and in a bottlefed population, 110 Navajo and 149 non-Indian children within the 7-to 13-year age range were individually tested. Frequency of tongue-thrust swallowing was 65% in the breast-fed (Navajo) sample and 81 % in the predominantly bottle-fed (non-Indian) sample. This difference was statistically significant. On the basis of a parent questionnaire, two subgroups were formed from the predominantly bottle-fed (non-Indian) sample. They were composed of a) 59 totally bottle-fed non-Indian children and b) 31 nonIndian children who had been breast-fed four months or longer. No statistical difference in terms of tongue-thrust swallowing was found between the two subgroups. However, a statistical difference was found when each of the two subgroups was compared separately with the breastfed Indian sample. Statistically more tongue-thrust swallowing existed in a totally bottle-fed group and in a group which had been breast-fed from four to twelve months than in the Navajo group which had been breast-fed from 18 to 36 months. The relationship between method of feeding in infancy and undue prolongation of tonguethrust swallowing clearly merits further investigation.