Correct answer
A. At birth
Explanation
The correct answer is At birth.
The incisal edges and the incisal thirds of facial surfaces of mandibular incisors and canines generally oppose lingual surfaces of maxillary incisor and canines ________?
Which of the following tooth shows largest Mesio- buccal ridge ________?
Retrusion of mandible is achieved by ________?
The maxillary tooth exhibiting the greatest variation in root alignment is________?
Which four mandibular teeth are so aligned that when viewed from the occlusal, a straight line may be drawn bisecting the contact areas________?
The occlusal surface shape of a 3 cusped mandibular second premolar________?