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The purpose of this study was to determine if intraoral scanners (IOS) are useful for dental hygiene instruction. The dental plaque of eight volunteers with healthy dentition was stained with a plaque-disclosing solution, and the O'Leary Plaque Control Record (PCR) was measured by direct observation and by evaluating IOS images. PCR values were higher for IOS images than for direct observation. The difference was greatest for the lingual surface of mandibular anterior teeth. Use of IOS for dental plaque examination might be useful as a novel method for dental hygiene instruction. [ABSTRACT FROM AUTHOR]

Background: We first reported that intraoral imaging with a color-imaging intraoral scanner could evaluate stained plaques and contribute to oral hygiene instructions. In this study, we aimed to evaluate the effects of red and blue staining on dental hygiene assessment with an intraoral scanner using plaque control record values and plaque-stained areas., Material and Methods: Fifteen patients (six males and nine females, aged 25-85 years) were included in this study. The patients' teeth were stained with a two-tone (blue and red) dental plaque staining solution, and images of their teeth were recorded with an intraoral scanner and a digital camera. The plaque control record was measured by direct viewing, as usual, and on a monitor using intraoral scanner image. In addition, the plaque deposition area was measured using images obtained using an intraoral scanner and images taken by a digital camera., Results: Most parts were stained red and blue dental plaque staining was also observed. Plaque control record values tended to be higher in the intraoral scanner evaluation than in the direct evaluation. The plaque-stained area was larger in intraoral scanner images than in camera images., Conclusions: It is possible to use a two-tone plaque-staining solution for oral health evaluation using an intraoral scanner. In the future, we need to investigate cases of blue-stained plaques. Key words: Intraoral scanner, oral hygiene, dental plaque, preventive dentistry., Competing Interests: The authors declare that they have no competing interests., (Copyright: © 2024 Medicina Oral S.L.)