Which statement regarding phase 1 scaling and root planing procedures is NOT true?

The statement that is not true is the one suggesting that compared to ultrasonic debridement, root planing achieves microscopically smoother root surfaces and better outcomes. Research has indicated that while hand instrumentation (root planing) is traditionally associated with achieving smoother root surfaces, ultrasonic debridement has shown comparable or even superior results in certain contexts. In fact, ultrasonic instruments can effectively remove biofilm and calculus while minimizing damage to the cementum, which may lead to similar or even improved clinical outcomes in terms of attachment gain and periodontal health restoration.

The other options are accurate representations of the effects and expectations of phase 1 scaling and root planing procedures. Healing assessment after four to six weeks is standard practice to determine the effectiveness of the therapy, as it allows time for tissue response and recovery. Additionally, it is well-established that scaling and root planing can effectively stabilize clinical attachment levels in cases of mild to moderate periodontitis, leading to improved periodontal status. Lastly, the observation that smokers have a less favorable response to these procedures is supported by research indicating that smoking can impair healing and may complicate the treatment of periodontal disease.