Which of the following describes the first teeth to erupt in infants?

Which of the following describes the first teeth to erupt in infants?

• A. The upper two teeth, the frontal incisors
• B. The bottom two teeth, the central incisors
• C. The two 'eye teeth', or canine teeth
• D. His primary molars

Answer: (B)

The first teeth to erupt are the lower central incisors. In most infants, eruption starts around 6 months, with the two bottom front teeth appearing before the upper ones. The typical sequence is lower central incisors first, then upper central incisors, followed by lateral incisors, first molars, canines, and second molars. So describing the bottom two teeth as the central incisors matches the usual earliest eruption pattern. The other options refer to teeth that come in later: upper central incisors after the bottom ones, canines, and molars erupt later in the sequence.

The first teeth to erupt are the lower central incisors. In most infants, eruption starts around 6 months, with the two bottom front teeth appearing before the upper ones. The typical sequence is lower central incisors first, then upper central incisors, followed by lateral incisors, first molars, canines, and second molars. So describing the bottom two teeth as the central incisors matches the usual earliest eruption pattern. The other options refer to teeth that come in later: upper central incisors after the bottom ones, canines, and molars erupt later in the sequence.