Table 1.

Participant inclusion and exclusion criteria

• Inclusion Criteria	• Male or Female regular/routine attenders at dental practice
	• History of previous examinations and scale and polish
	• Aged 18 – 60 years
	• Good general health
	• 20+ permanent teeth (including crowned teeth)
• Exclusion Criteria	• BPE code of 3 or more in one or more sextants and/or requirement for more extensive periodontal therapy
	• More than 3 actively carious teeth
	• Requirement for prophylactic (pre-scaling) antibiotic cover
	• Removable prosthesis or orthodontic appliance present
	• Existing systemic condition which poses a risk factor for periodontal health e.g. diabetes mellitus
	• Medication which is known to affect the appearance or health of the periodontal tissues
	• Immunosuppressant state
	• Pregnancy
	• Involvement in any concurrent trial