Where should the initial point of insertion be when using an anterior scaler?

• A. At the line angle of the tooth
• B. At the incisal edge
• C. At the root furcation
• D. At the cusp tip

Answer: (A)

Starting at the line angle of the tooth provides the correct orientation to engage the blade with the surface and begin the stroke along the tooth contour. This spot sits where two surfaces meet, giving you stable access to the facial or lingual surfaces of the anterior teeth and enabling proper angulation to remove calculus effectively. The incisal edge is too coronal to initiate instrumentation, and the root furcation (a feature on multirooted teeth) or cusp tips (not present on anterior teeth) aren’t relevant insertion points here.