Principles of scaling

BASIC

Anterior teeth

Anterior teeth – concept of facing and averted surfaces

First identify axis or mid-line of the anterior teeth on labial and oral surfaces

Right handed operator

Left handed operator

Posterior teeth

Posterior teeth – sequence of treatment

First identify distal and mesial line angles on buccal and lingual surface of posterior teeth that divide surfaces to distal, mid-buccal and mesial sections

Sequence 1
Always start from distal line angle
and scale towards distal surface

Sequence 2
Proceed from distal line angle towards mesial

Sequence 3
Continue from mesial line angle towards mesial surface.

Right handed & Left handed operator

Same for both