Thumbsucking as related to placement and acoustic aspects of /s, z/ and lingual rest postures
Kellum, G.D.; Gross, A.M.; Hale, S.T.; Eiland, S.; Williams, C.
International Journal of Orofacial Myology Official Publication of the International Association of Orofacial Myology 20: 4-9
1994
ISSN/ISBN: 0735-0120 PMID: 9055658 Document Number: 438659
Three hundred seventy-one second graders in rural public schools were evaluated for thumbsucking, rest and swallow postures of the tongue, and articulatory placement and acoustic aspects of /s,z/. Significant relationships were observed between thumbsucking and lower dental or interdental rest and swallow postures as well as acoustic errors for /s,z/. The implications of these relationships are discussed.