The cleaning often begins with x-rays taken to help in diagnosing underlying dental conditions. The teeth are then carefully scraped and cleaned to remove tartar, plaque and stains. Once the teeth are cleaned, they are polished to a high shine and flossed carefully to remove plaque between the teeth. Cleanings typically take about a half an hour or slightly longer depending on the amount of buildup currently on your teeth. Most often, cleanings are accompanied with a dental examination to check for cavities, problematic restorations and even oral cancer. Preventative care through the use of expert cleanings is the best way to keep your smile healthy and free of cavities, gingivitis and periodontal disease.