Reference values of periodontal inflamed surface area as a clinical index determined by a multicenter retrospective observational study

DOI Web Site 7 Citations 13 References
  • Inoue Yuki
    Department of Pathophysiology - Periodontal Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
  • Hatanaka Kazu
    Department of Pathophysiology - Periodontal Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
  • Yamamoto Tadashi
    Department of Pathophysiology - Periodontal Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
  • Hirata Takahisa
    Division of Periodontology, Department of Oral Interdisciplinary Medicine, Graduate School of Dentistry, Kanagawa Dental University
  • Minabe Masato
    Division of Periodontology, Department of Oral Interdisciplinary Medicine, Graduate School of Dentistry, Kanagawa Dental University
  • Yamamoto Tatsuo
    Department of Disaster Medicine and Dental Sociology, Graduate School of Dentistry, Kanagawa Dental University
  • Naito Toru
    Department of Geriatric Dentistry, Fukuoka Dental College
  • Yamamoto Matsuo
    Department of Periodontology, Showa University School of Dentistry
  • Sato Shuichi
    Department of Periodontology, Nihon University School of Dentistry
  • Ishihata Hiroshi
    Division of Periodontology and Endodontology, Tohoku University Graduate School of Dentistry
  • Inagaki Koji
    Department of Dental Hygiene, Aichi Gakuin University Junior College
  • Mitani Akio
    Department of Periodontology, School of Dentistry, Aichi Gakuin University
  • Nakashima Keisuke
    Department of Periodontology, Kyushu Dental University
  • Urushihara Joji
    Corporation FOD
  • Takashiba Shogo
    Department of Pathophysiology - Periodontal Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences

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Other Title
  • 多施設後ろ向き観察研究による臨床指標としての歯周炎症表面積の基準値

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<p>Periodontal inflamed surface area (PISA) is a new clinical index of periodontal disease that represents the inflamed area in periodontal tissue. It is considered to be a useful index even for medical professionals other than dentists, to understand the degree of inflammation of periodontal disease. However, the reference values of PISA and the criteria for both the severity of periodontal disease and the effects of treatment are still unknown. We retrospectively examined the values of PISA in each phase of periodontal treatment, based on data obtained from computerized dental records prepared by applicants for accredited dentists recognized by the Japanese Society of Periodontology (JSP) as JSP Board Certified Periodontists, and proposed reference values of PISA to show the degree of inflammation associated with periodontal treatment. PISA was calculated for 113 cases from 8 institutions by the method of Nesse et al., from the probing pocket depth and bleeding on probing (BOP). The results revealed a median value of PISA of 1,271.4 mm2 at the first examination, 211.8 mm2 at the end of the initial preparation, 52.1 mm2 at supportive periodontal therapy (SPT) transition, and 30.0 mm2 at the latest SPT. Moreover, PISA was highly correlated with BOP (p<0.001), and in fact, reflected the treatment effect more sensitively than BOP. Our findings revealed that periodontal inflammation with a PISA value of approximately 1,500 mm2 at the first examination decreased to less than 100 mm2 (approximately 7%) at SPT. Further accumulation of data and more detailed analysis could lead to PISA being developed as a useful index for conveying the severity of periodontal disease in cooperative medical and dental practice.</p>

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