Deciduous Tooth Eruption — MFDS Part 1 MCQ
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Correct answer: A — Mandibular central incisor
The mandibular central incisor is typically the first primary tooth to erupt. Central incisors usually emerge at approximately 6 months, and the mandibular central incisors generally precede their maxillary counterparts. Therefore, the maxillary central incisor is usually slightly later. The lateral incisors erupt after the central incisors, while first molars and canines emerge substantially later in the primary eruption sequence. Eruption timing varies between children, so the age is an approximate developmental guide rather than an absolute threshold.
Reference: NHS, “Baby teething symptoms,” section: What order do baby teeth appear in?, reviewed 14 May 2026. https://www.nhs.uk/baby/babys-development/teething/baby-teething-symptoms/