# The free gingival groove is most commonly associated with which tooth?
a) Maxillary canine
b) Mandibular incisor
c) Maxillary first molar
d) Mandibular premolar
The correct answer is:
b) Mandibular incisor
The free gingival groove is a shallow linear depression that demarcates the free gingiva from the attached gingiva. It is more prominent in some individuals and may not always be present. However, when it is visible, it is most commonly associated with the mandibular incisors due to their relatively thin and well-defined gingival anatomy. This aligns with standard dental textbooks like Carranza’s Clinical Periodontology, which highlights the mandibular incisors as a common site for the free gingival groove.
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