Trends in insurance claims for dental gold-silver-palladium alloy in private dental clinics in Japan from 2006 to 2021
DOI:
https://doi.org/10.51094/jxiv.111Keywords:
Dental materials, Health insurance claims data, Trend analysis, Gold-silver-palladium alloyAbstract
Aim. The price of dental gold-silver-palladium alloy has been increasing. This study aimed to describe the trend in insurance claims for dental gold-silver-palladium alloy in private dental clinics in Japan from 2006 to 2021 and examine the association between the trend in insurance claims and the increasing price of dental gold-silver-palladium alloy.
Methods. We calculated the proportions of dental gold-silver-palladium alloy in all dental materials for inlays and crowns using the age-standardised number of insurance claims. We performed a segmented regression analysis to estimate unstandardised coefficients and 95% confidence intervals (CIs) for the annual trend changes in the proportions during periods with the increasing price. The periods were estimated using a change point analysis.
Results. In inlays and fillings, the proportion of dental gold-silver-palladium alloy decreased from 13.1% in 2006 to 6.8% in 2021. However, there were no significant downwards trends during the periods with the increasing price. In crowns, the proportion of dental gold-silver-palladium alloy decreased from 94.1% in 2006 to 71.8% in 2021, and a trend change occurred during the periods with the increasing price (2011 to 2016: -0.78 [95%CI = -1.27, -0.29]; 2017 to 2018: -1.01 [95%CI = -2.65, 0.62]; 2019 to 2021: -4.93 [95%CI = -6.89, -2.96]).
Conclusion. Since 2006, the age-adjusted proportions of insurance claims for dental gold-silver-palladium alloy have trended downwards. The increased price might have partially contributed to the downwards trends.
Downloads *Displays the aggregated results up to the previous day.
References
Brennan D. Dental Health Services Epidemiology. In: Peres MA, Antunes JLF, Watt RG, eds. Oral Epidemiology: A Textbook on Oral Health Conditions, Research Topics and Methods. Springer International Publishing; 2021:395-407. doi:10.1007/978-3-030-50123-5_26
Bayne SC, Ferracane JL, Marshall GW, Marshall SJ, van Noort R. The Evolution of Dental Materials over the Past Century: Silver and Gold to Tooth Color and Beyond. J Dent Res. 2019;98(3):257-265. doi:10.1177/0022034518822808
Eklund SA. Trends in dental treatment, 1992 to 2007. J Am Dent Assoc. 2010;141(4):391-399. doi:10.14219/jada.archive.2010.0191
Brennan DS, Balasubramanian M, Spencer AJ. Trends in dental service provision in Australia: 1983–1984 to 2009–2010. Int Dent J. 2015;65(1):39-44. doi:10.1111/idj.12141
Ikegami N, Yoo BK, Hashimoto H, et al. Japanese universal health coverage: evolution, achievements, and challenges. The Lancet. 2011;378(9796):1106-1115. doi:10.1016/S0140-6736(11)60828-3
Zaitsu T, Saito T, Kawaguchi Y. The Oral Healthcare System in Japan. Healthcare. 2018;6(3):79. doi:10.3390/healthcare6030079
Sakamoto H, Rahman M, Nomura S, et al. Japan Health System Review. World Health Organization. Regional Office for South-East Asia; 2018. https://apps.who.int/iris/handle/10665/259941
Nakai M, Niinomi M. Chapter 12 Dental Metallic Materials. In: Advances in Metallic Biomaterials : Processing and Applications. Springer; 2015. doi:10.1007/978-3-662-46842-5
The World Bank. Commodity Markets. Published 2022. Accessed January 31, 2022. https://www.worldbank.org/en/research/commodity-markets
Manning WG, Bailit HL, Benjamin Bernadette, Newhouse JP. The demand for dental care: evidence from a randomized trial in health insurance. J Am Dent Assoc. 1985;110(6):895-902. doi:10.14219/jada.archive.1985.0031
Ministry of Health, Labour and Welfare. Statistics of Physicians, Dentists and Pharmacists. Published 2021. Accessed December 27, 2021. https://www.mhlw.go.jp/toukei/list/33-20c.html
Ministry of Health, Labour and Welfare. Survey on Economic Conditions in Health Care. Published 2021. Accessed December 24, 2021. https://www.mhlw.go.jp/bunya/iryouhoken/database/zenpan/iryoukikan.html
Reissmann DR, Bellows JC, Kasper J. Patient Preferred and Perceived Control in Dental Care Decision Making. JDR Clin Transl Res. 2019;4(2):151-159. doi:10.1177/2380084418811321
Samorodnitzky-Naveh GR, Geiger SB, Levin L. Patients’ satisfaction with dental esthetics. J Am Dent Assoc. 2007;138(6):805-808. doi:10.14219/jada.archive.2007.0269
Ministry of Health, Labour and Welfare. Statistics of Medical Care Activities in Public Health Insurance. Published 2020. Accessed April 25, 2022. https://www.mhlw.go.jp/toukei/list/26-19.html
Statistics Bureau of Japan. Population estimates in Japan. Published 2022. Accessed February 25, 2022. https://www.stat.go.jp/data/jinsui/2.html
FUJIDENTAL. Accessed February 16, 2022. https://fujidental.co.jp/
Statistics Bureau, Ministry of Internal Affairs and Communications. Consumer Price Index. Consumer Price Index. Published 2022. Accessed June 14, 2022. https://www.stat.go.jp/data/cpi/
Killick R, Eckley IA. changepoint: An R Package for Changepoint Analysis. J Stat Softw. 2014;58(3):1-19. doi:10.18637/jss.v058.i03
Muggeo VM. Segmented: an R package to fit regression models with broken-line relationships. R News. 2008;8(1):20-25.
Downloads
Posted
Submitted: 2022-07-06 04:00:38 UTC
Published: 2022-07-07 01:33:57 UTC — Updated on 2022-09-02 07:30:50 UTC
Versions
- 2022-09-02 07:30:50 UTC (2)
- 2022-07-07 01:33:57 UTC (1)
Reason(s) for revision
We have upated the data and statistical analyses.License
Copyright (c) 2022
Yukihiro Sato
Kakuhiro Fukai
Yuki Kunori
Eiji Yoshioka
Yasuaki Saijo
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
