Refer to Section 5 of the full guidance.
Non-surgical periodontal therapy begins by motivating and instructing the patient in adequate self care, followed by re-evaluation of their level of oral hygiene.
Non-surgical instrumentation to disrupt the plaque biofilm and remove calculus to give a clean, smooth tooth/root surface can then be completed both supra- and sub-gingivally.
If the patient can achieve good personal oral hygiene, then non-surgical therapy can be highly effective in stabilising periodontal health.