Which of the following is NOT an objective of scaling?

The focus of scaling in periodontal therapy is primarily on the removal of subgingival and supragingival deposits such as calculus and plaque, which are significant contributors to periodontal disease. Achieving a smooth root surface and ensuring patient comfort during the procedure are also essential objectives of scaling.

However, restoring the enamel surface is not an objective of scaling. Scaling primarily addresses the affected soft tissue and the calculus that adheres to the root surfaces; it does not directly intervene in the enamel layer of the teeth. Enamel restoration falls under the domain of restorative dentistry rather than periodontal therapy. Thus, while scaling aims to enhance periodontal health by cleaning and smoothing surfaces, it does not target the restoration of enamel, making this the correct answer.