The purpose of this paper is to share information about the digit-(thumb/finger) sucking behavior including how it begins; the biological, psychological and physiological connections; how it becomes perpetuated; problems related to prolonged sucking activity; guidelines for referral; and considerations for appropriate patient selection to enhance successful therapy. The basis for this information is a combination of published research and 24 years of clinical experience working with approximately 1500 individuals with sucking habits. Data compiled on 723 individuals will be presented.


digit sucking, treatment efficacy, case reports