A study of internal decision-making about periodontal sensation by signal detection theory

2015 Fiscal Year Final Research Report

• Project/Area Number: 25462995
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Prosthodontics/ Dental materials science and
• Research Institution: Okayama University
• Principal Investigator: Oki Kazuhiro 岡山大学, 医歯(薬)学総合研究科, 助教 (00346454)
• Co-Investigator(Kenkyū-buntansha): Minagi Shogo 岡山大学, 医歯(薬)学総合研究科, 教授 (80190693) ; Nishigawa Goro 岡山大学, 大学病院, 講師 (00172635)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 歯根膜感覚 / 咬合感覚 / 信号検出理論 / 受信者操作特性

Outline of Final Research Achievements

This study examined the sensitivity of periodontal sensation in upper left first molar in terms of Receiver-Operating Characteristic Curve (ROC curve). ROC curve of periodontal sensation was evaluated by calculating area under curve (AUC) before and after rest (control task), mental arithmetic as psychological stress (mental task) and occlusal loading as physical stress (bite task).
This study showed that AUC of ROC in 10 gf loading was significant smaller than that in 20 gf loading before all tasks, however, after bite task, AUC of ROC in 20gf loading decreased, which caused significant difference not to appear.

Free Research Field

歯科補綴学