What part of the scaler blade is known as the back of the blade?

In the context of a scaler blade, the term "back of the blade" refers to a specific part of the instrument that is not used for scaling but rather serves a different purpose in handling the instrument effectively. This part is typically characterized by its smooth, non-cutting surface, which is important for decreasing the potential for soft tissue trauma during procedures.

Part 9 designates this section of the scaler blade, as it is located opposite the working edge. The design of scalers requires various parts to perform specific functions; the back assists in stabilizing the instrument while the surgeon or hygienist works, ensuring meticulous control and precision without causing damage to the surrounding tissues.

Recognition of the specific function of each part of the scaler contributes to the overall effectiveness and safety of periodontal treatments, making it essential for dental professionals to be knowledgeable about their instruments. In the context of this question, identifying the "back of the blade" as being Part 9 aligns with the anatomical features and operational functions that are fundamental in periodontology practices.