The Oral Hygiene Index (OHI) is a standardized, quantitative method used to assess and measure oral hygiene status in individuals. It is a useful tool for dental professionals and researchers to evaluate the efficacy of oral hygiene procedures and interventions.
The OHI is typically comprised of two main components - the Simplified Oral Hygiene Index (OHI-S) and the Green and Vermillion Oral Hygiene Index (OHI-GV). The OHI-S measures the presence of debris and calculus on the teeth, while the OHI-GV evaluates the amount of visible plaque present on certain tooth surfaces.
To perform an OHI assessment, dental professionals visually evaluate six specific tooth surfaces - the buccal, lingual, and occlusal surfaces of the upper and lower teeth. Each surface is given a score ranging from 0 to 3, with 0 indicating no debris, calculus, or plaque present, and 3 indicating a high level of accumulation.
The scores obtained from each tooth surface are then added together, resulting in a total OHI score for the individual. This score can be interpreted as an indicator of oral hygiene status, helping dental professionals identify areas that require improvement or targeted intervention.
By utilizing the OHI, oral health practitioners can objectively measure and monitor oral hygiene levels, allowing them to provide personalized recommendations and strategies to improve a patient's oral health. Additionally, the OHI can be used to compare oral hygiene status among different populations, assess the effectiveness of oral hygiene interventions, and aid in epidemiological studies.
