Programmed self‐instruction in oral hygiene

The aim of this investigation was to study whether programmed self‐instruction in oral hygiene, given once, could increase the subject's knowledge and also whether this resulted in more effective oral hygiene as measured by the accumulation of dental plaque and the state of the gingivae. The investigation was performed on recruits to the Armed Services. Using questionaires, it was estimated whether knowledge about oral hygiene was increased and retained. By estimating plaque formation and gingival health it was determined whether oral hygiene was improved. The self‐instruction programme contained 42 frames and was presented in the form of a book. It was read by the experimental groups on a single occasion. The subject's knowledge was tested immediately before and after the self‐instruction, and again after one month. The level of oral hygiene was assessed before the instruction, after one week and again after one month. The subject's knowledge was improved and retained, as estimated from the replies to the questions. The plaque and gingival scores were significantly reduced. The results were achieved with a minimum of time and personnel. Therefore, the method seems to be highly efficient. Due to this and to the fact that it can be adapted for varied purposes, it is concluded that programmed self‐instruction is a valuable method for teaching oral hygiene.