A multi-centered epidemiological study evaluating the reliability of the treatment difficulty indices developed by the Japan Prosthodontic Society

Takuo Kuboki, Tetsuo Ichikawa, Kazuyoshi Baba, Masayuki Hideshima, Yuji Sato, Hiroyuki Wake, Kan Nagao, Yorika Kodaira-Ueda, Aya Kimura-Ono, Katsushi Tamaki, Kazuhiro Tsuga, Kaoru Sakurai, Hironobu Sato, Kanji Ishibashi, Hirofumi Yatani, Takashi Ohyama, Yasumasa Akagawa, Toshihiro Hirai, Keiichi Sasaki, Kiyoshi Koyano

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Background: The diagnostic assessment of the level of difficulty in treating patients who need prosthodontic care is useful to establish a medico-economically efficient system with primary care dentists and prosthodontic specialists. Materials and methods: A multi-axis assessment protocol was established using the newly established treatment difficulty indices. The protocol contains Axis I: oral physiological conditions (e.g., teeth damage and/or missing teeth); Axis II: general health and sociological conditions (e.g., medical disorders); Axis III: oral health-related quality of life (OHRQOL; e.g., oral health impact profile: OHIP); and Axis IV: psychological health (e.g., mood, anxiety, somatoform disorders). A preliminary study on the test-retest consistency of the protocol was conducted to check the levels of reliability of the indices prior to a large-scale, multi-center cohort study on the validity of the protocol. Results: The test-retest consistency in terms of the oral physiological condition (Axis I) after data reduction was 0.63 for patients with teeth problems, 0.95 for partially edentulous patients, and 0.62 for edentulous patients. The reliability for general health and sociological conditions (Axis II), OHRQOL (Axis III), and psychological health (Axis IV) were 0.88, 0.74, and 0.61, respectively. These values reflect either " sufficient agreement" or " excellent agreement" in accordance with the criteria established by Landis and Koch (1977) [1]. Conclusion: This protocol is the first multi-axis assessment scheme introduced for prosthodontic treatment with sufficient reliability. This new system is therefore expected to have a significant impact on future dental diagnostic nomenclature systems.

Original languageEnglish
Pages (from-to)71-86
Number of pages16
JournalJournal of Prosthodontic Research
Volume56
Issue number2
DOIs
Publication statusPublished - Apr 1 2012

Keywords

  • Diagnosis
  • Patient risk profile
  • Prosthodontics
  • Quality assurance
  • Treatment outcome

ASJC Scopus subject areas

  • Oral Surgery
  • Dentistry (miscellaneous)

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    Kuboki, T., Ichikawa, T., Baba, K., Hideshima, M., Sato, Y., Wake, H., Nagao, K., Kodaira-Ueda, Y., Kimura-Ono, A., Tamaki, K., Tsuga, K., Sakurai, K., Sato, H., Ishibashi, K., Yatani, H., Ohyama, T., Akagawa, Y., Hirai, T., Sasaki, K., & Koyano, K. (2012). A multi-centered epidemiological study evaluating the reliability of the treatment difficulty indices developed by the Japan Prosthodontic Society. Journal of Prosthodontic Research, 56(2), 71-86. https://doi.org/10.1016/j.jpor.2012.02.007