1. Thumbsucking in childhood as a cause of subsequent irregularity of the teeth;Chandler;Boston Med Surg J,1878
2. Damage to the primary dentition resulting from thumb and finger (digit) sucking;Fukuta;ASDC J Dent Child,1996
3. Effect of digit-sucking habits on root morphology in primary incisors;Taylor;Pediatr Dent,1983
4. Thumb-sucking: literature review;Johnson;ASDC J Dent Child,1993