If degenerative changes occur in the junctional epithelium, pocket formation is retarded.

A concave mirror is commonly used by a dentist.

The Sillness and Loe index considers the thickness of plaque on the tooth.

The most important modification of amalgam restorations on primary teeth is cavity preparation (Answer: 2). Unlike permanent teeth, primary teeth have a thinner enamel layer and a larger pulp chamber relative to their size. Therefore, the cavity preparation must be done with caution to avoid pulp exposure and ensure the longevity of the restoration.

The first step in coronoplasty is the elimination of retrusive contact prematurities.