Relationship between changes in the oral periodontal pathogenic flora and crown color brightness in young women

<p>The relationship between periodontal pathogens in oral plaque and tooth color has been suggested update, though it has not been elucidated yet. We investigated the relationship between periodontal pathogenic flora and crown color brightness in healthy young adult women.</p><p>A total of 56 N-junior college students and faculty members, who were the subjects of this study (2021), provided plaques and cooperated with measuring crown color brightness (brightness). DNA of periodontopathic bacteria is prepared from collected plaque and 5 kinds of periodontopathic bacteria were identified by PCR. They were compared with 2015 data.</p><p>In periodontal pathogen carrier status, although 56 subjects of 2021 were all Aggregatibacter actinomycetemcomitans (A. a.) carriers, and 16.1% of them were Porphyromonas gingivalis (P. g.) carriers, 92.6% of 54 subjects in 2015 carried P. g. and 7.4% were A. a. carriers. The proportion of carriers of A. a. and P. g. was reversed between 2021 and 2015. It was divided into two groups according to brightness in 2021. Bright-color group (levels 1 and 2) and dark-colored group (levels 3 and 4) were 27 and 39 subjects, respectively. The number of people with a brightness level 3 was the most of them. As a result of comparing the average carrier types of the bright-color group and the dark-color group in 2021, the number of types was significantly higher in the bright-color group than the dark-color group, however, in 2015, the number of types was clearly larger in the dark-color group. This result was reversed, also.</p><p>This study suggests a relationship between the periodontal pathogenic flora and brightness, although the reason for this is an issue that needs to be clarified in the future.</p>