A 5-year-old presents with an erupted permanent first molar, an erupted mandibular permanent lateral incisor, and an erupted maxillary permanent central incisor. How should this dental development be characterised?

Correct answer: C. Advanced (accelerated) for chronological age

• A. Endocrine disorders such as hyperthyroidism can accelerate eruption, but isolated advancement in a well child does not by itself indicate pathology.
• B. Delayed development would show a complete primary dentition with no permanent eruption at 7 or older.
• C. Correct. This is ADVANCED dental development. First permanent molars and mandibular central incisors normally erupt at age 6–7, mandibular LATERAL incisors at 7–8, and maxillary centrals at 7–8. A 5-year-old with all of these already erupted is running roughly one to two years ahead of schedule. Isolated dental advancement in an otherwise healthy child is usually a normal variant, often familial and more common in girls and in children with a higher body mass index.
• D. Normal 5-year-old status is a complete primary dentition with no permanent teeth erupted.