Malocclusion and Age
							z During the first 3 yrs, the damage from the habit is mainly confined to the anterior segment, producing an anterior open bite. z Damage can be detrimental if the habit is continued beyond the age of 3.5 yrs. z After 4 years of age, the habit becomes strongly established. The damage seen is more significant. z After the eruption of the permanent incisors, the worst amount of damage seen.