A mother to a well 2-year-old girl with thumb sucking behavior,she is worried that the behavior may continue or may cause dental problem

(C). Thumb sucking is common in infancy and in as many as 25% of children age 2 yr and 15% of children age 5 yr. Thumb sucking beyond 5 yr may be associated with sequelae (paronychia, anterior open bite). Like other rhythmic patterns of behavior, thumb sucking is self soothing. Basic behavioral management, including encouraging parents to ignore thumb sucking and instead focus on praising the child for substitute behaviors, is often effective treatment. Simple reminders and reinforcers, such as giving the child a sticker (or other rewards) for each block of time that he or she does not suck the thumb can also be considered. Use of noxious agents (bitter salves) this approach should rarely be necessary. Going deep in social history seems to be non-appropriate in a well child. Response A is true but incomplete.