Fluctuations of Subjective Symptoms in VAS Recordings in TMD Patients.

DOI 1 Citations 15 References
  • Kikawada Yasuto
    Department of Fixed Prosthodontics, School of Dentistry, Iwate Medical University
  • Kurihashi Ryuichi
    Department of Fixed Prosthodontics, School of Dentistry, Iwate Medical University
  • Fujisawa Masanori
    Department of Fixed Prosthodontics, School of Dentistry, Iwate Medical University
  • Shioyama Tsukasa
    Department of Fixed Prosthodontics, School of Dentistry, Iwate Medical University
  • Ishibashi Kanji
    Department of Fixed Prosthodontics, School of Dentistry, Iwate Medical University

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Other Title
  • 顎関節症患者のＶＡＳ記録からみた主観評価の変化

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Although the visual analogue scale (VAS) is utilized to evaluate changes before and after treatment, it has not been confirmed how bias could affect the subjective evaluation over a long period of treatment. To evaluate the validity and reliability of VAS, three categories of VAS were identified. The initial pre-treatment status (VAS-1), the recalled pre-treatment status (VAS-2), and the post-treatment status (VAS-3) were recorded by 46 outpatients with temporomandibular disorders in the Department of Fixed Prosthodontics, Dental Hospital of Iwate Medical University. VAS-1 was recorded at their first visit to the hospital, and the VAS-2 and VAS-3 recordings were both taken on the same day at least 6 months after the first visit. Higher scores for VAS-2 compared to VAS-1 showed the effect of treatment on the subjective evaluation of pain, level of inconvenience, and range of jaw motion. Although “spontaneous pain” and “pain on opening” showed a high correlation between VAS-1 and VAS-2 in terms of the correlation coefficient, Cohen's κ, “difficulty of opening” revealed little correlation between the two. Since the pain reports of VAS-1 and VAS-2 provided reliable data, it was concluded that VAS is an effective way to evaluate treatment outcome.

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