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Preprint / Version 1

Trends in insurance claims for dental gold-silver-palladium alloy in private dental clinics from 2006 to 2020 in Japan

##article.authors##

  • Yukihiro Sato Division of Public Health and Epidemiology, Department of Social Medicine, Asahikawa Medical University
  • Kakuhiro Fukai Fukai Institute of Health Science
  • Yuki Kunori Division of Public Health and Epidemiology, Department of Social Medicine, Asahikawa Medical University
  • Eiji Yoshioka Division of Public Health and Epidemiology, Department of Social Medicine, Asahikawa Medical University
  • Yasuaki Saijo Division of Public Health and Epidemiology, Department of Social Medicine, Asahikawa Medical University

DOI:

https://doi.org/10.51094/jxiv.111

Keywords:

Dental materials, Health insurance claims data, Trend analysis, Gold-silver-palladium alloy, Repeated cross-sectional data

Abstract

This study aimed to describe the trend in insurance claims for dental gold-silver-palladium alloy in private dental clinics from 2006 to 2020 and examine the association between the trend and the increasing price. We calculated the proportions of dental gold-silver-palladium alloy in inlays and crowns and performed a segmented regression analysis for the annual trend changes in the proportions. In inlays and fillings, the proportion of dental gold-silver-palladium alloy decreased from 13.2% in 2006 to 7.0% in 2020. However, there was no significant downwards trend during the periods with the increasing price. In crowns, the proportion of dental gold-silver-palladium alloy decreased from 93.9% in 2006 to 75.8% in 2020, and a significant trend change occurred during the periods with the increasing price. Since 2006, the proportions of the insurance claims for dental gold-silver-palladium alloy have trended downwards. The increased price might have partially contributed to the downwards trend.

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Submitted: 2022-07-06 04:00:38 UTC

Published: 2022-07-07 01:33:57 UTC

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Dentistry