Mechanical scaling is is often faster and easier than hand scaling teeth. With this being the case, why do we still do some hand scaling of teeth when performing a dental prophylaxis? Question 13 options: Mechanical scaling does not always remove all calculus deposits as it can plane over the surface of calculus rather than removing it Mechanical scaling has a higher potential for damaging the teeth if not used correctly Hand instruments should be used to remove large chunks of calculus and can be used subgingivally Mechanical scaling can be used to remove large chunks but hand scaling is preferred to remove smaller deposits Hand scalers are used only subgingivally. A mechanical scaler can be used for the remainder of the prophylaxis