Identifying incisors by position in the dental arch

Steps:

• Recall the standard human lower jaw arrangement: central incisors, lateral incisors, canines, premolars, molars from front to back.
• Locate the front teeth in the diagram, which are the incisors for cutting food.
• Examine labels: D points to a front tooth matching incisor position.
• Confirm D's shape and location align with incisor function.

Why D is correct:

• Incisors are defined as the four chisel-shaped front teeth in each jaw quadrant, positioned anteriorly for biting and cutting.

Why the others are wrong:

• A is a molar, located posteriorly for grinding food.
• B is a premolar, situated between canines and molars for tearing.
• C is a canine, positioned next to incisors for piercing meat.

Final answer: D