Signs and appearance of teeth displaying bottle caries: Upper front teeth that break easily Brown teeth with fragmented edges White chalky lines or spots near the gums Children who have erupted teeth or are past the age to be weaned (one year old) are highly susceptible to rotted front teeth when being put to bed with a bottle containing milk, juice or other sugar-containing liquids. There is decreased salivary flow during sleep and clearance of the liquid from the teeth is slowed.