Regarding phase 1 scaling and root planing procedures, which statement is incorrect?

The statement that root planing achieves microscopically smoother root surfaces than ultrasonic debridement is incorrect. In practice, both hand instrumentation and ultrasonic debridement are effective methods for cleaning root surfaces, but studies indicate that ultrasonic instruments can achieve a smooth surface comparable to the traditional hand instruments, and they may even have an advantage in some cases.

Moreover, ultrasonic debridement can remove less cementum and is often preferred for its efficiency and the ability to flush out debris and bacteria during treatment. The smoothness of the root surface post-scaling and root planing depends on a variety of factors including the skill of the clinician, the condition of the instruments, and the technique used. Thus, it is misleading to assert that hand scaling and root planing consistently produce better results than ultrasonic methods when it comes to creating a smooth root surface.

The other statements reflect appropriate guidelines and outcomes associated with scaling and root planing procedures. Assessing tissue healing within four to six weeks is standard practice to gauge the effectiveness of the therapy. The stabilization of clinical attachment levels is a documented outcome of successful scaling and root planing. Lastly, the assertion regarding smokers generally responding more favorably than non-smokers to these procedures does not align with current research