The correct answer is Second molar.

In the human dentition, deciduous teeth (also known as primary or baby teeth) are eventually replaced by permanent teeth. However, not all deciduous teeth have a direct permanent successor.

- The deciduous molars are succeeded by permanent premolars (first and second premolars). Specifically, the first deciduous molar is succeeded by the first permanent premolar, and the second deciduous molar is succeeded by the second permanent premolar.
- The deciduous canines, central incisors, and lateral incisors are succeeded by their permanent counterparts (canine, central incisor, lateral incisor respectively).
- The permanent molars however, do not replace any deciduous teeth; they erupt posterior to the second molars (in the permanent dentition).

Key Points:
- Deciduous second molar is replaced by the permanent second premolar.
- Deciduous molars do not correspond to permanent molars but to premolars.
- Permanent molars erupt posteriorly and do not replace any deciduous teeth.

Reference: Ten Cate's Oral Histology, 8th Edition, Chapter 6: Development of the Dentition, p. 125