Australian Dental Council (ADC) Test 2026 – 400 Free Practice Questions to Pass the Exam

The blade of periodontal scalers and curettes is formed by the lateral surface and the face. The lateral surface refers to the sides of the instrument that help to adapt to the contours of the teeth and subgingival areas. The face, which is the flat or slightly curved portion at the end of the blade, plays a critical role in providing the cutting edge necessary for the instrument's function. Together, these surfaces enable effective scaling and root planing by allowing the clinician to engage calculus and biofilm effectively during periodontal treatment.

In terms of function, the lateral surfaces facilitate the positioning of the instrument against the tooth surface, while the face provides the cutting action when used with a pulling or pushing motion. This specific configuration is designed to optimize the removal of deposits while minimizing trauma to the surrounding tissues.

Understanding the relationship between these surfaces and their specific roles in periodontal therapy is crucial for effective instrument use and patient care.