NCT01118143.

Trial name or title	Oral health literacy tailored communication (Effects of communication tailored to oral health literacy level of adult dental patients: a randomised controlled trial)
Methods	Randomised parallel controlled trial
Participants	Inclusion criteria: participants > 20 years of age; who master the Norwegian language; who are registered at the university dental clinic (IKO) Exclusion criteria: people who do not master the Norwegian language; strongly visually impaired people that have difficulty in reading; people with a history of heart attack in the past 6 months; immunocompromised people and organ‐transplanted people; people with other conditions that might lead to more disadvantages than advantages by participating
Interventions	Behavioural: tailored oral health literacy instruction The intervention includes oral hygiene instruction tailored to the level of oral health literacy, and will include information about the outcome of the clinical examination. Providing relevant information to the participant will be in focus, and there will be given a personalized demonstration as well as guidance on how to conduct proper oral hygiene practices at home. The aim of the intervention is to improve oral hygiene and attitudes towards dental care by taking the literacy level of the participant into consideration. Other Name: lifestyle counselling
Outcomes	Main outcome: gingival index (time frame: 6 months after intervention) Other outcome: plaque index (time frame: 6 months after intervention)
Starting date	June 2010
Contact information	Professor Jan O Bergdahl, University of Tromsoe, Norway
Notes	Author contacted: data collection completed, data analysis to be completed/published