2020, Vol.20, No.3

Journal of Korean society of Dental Hygiene 2025 KCI Impact Factor : 1.22

pISSN : 2287-1705 / eISSN : 2288-2294
https://journal.kci.go.kr/jksdh

Objectives: This study aimed to determine and facilitate provisions for the unmet dental needs of Koreans, stratified by time, influencing factors, and research trends, through a systematic review of related published studies since 2006. Methods: this review focused on previous studies published between January 2006 and November 2019 that analyzed influencing the factors underlying the unmet dental needs of koreans. We followed the guidelines set for each phase of research and selected the final 32 studies that met the selection criteria for the analysis. Results: The number of studies has rapidly increased since 2015 (22 studies, 68.7%). the were 68.9% in 2006, 25.9% in 2009, 41.3% in 2010- 2012, and 33.3% in 2013-2015 for adults and 27.9% in 2010, 24.6% in 2015, and 16.1% in 2017 for the rates of older adults. the rates of unmet dental needs related to economic factors, were 38.6% in 2006, 41.4% in 2007-2009, and 35.9% in 2013-2015 for adults and 50.5% in 2010 and 41.2% in 2015 for the older adults. There were common influencing factors for unmet dental needs. the rate of unmet dental needs was increased by with female gender, younger age, single marital status, low family income, low educational level, worsened subjective health condition, and the presence of chronic diseases. Conclusions: Standardized studies with more accurate definitions and assessment tools are required. however, our study emphasizes the need for a policy intervention that accounts for the characteristics of subjects to reduce unmet dental needs.

Objectives: This purpose of this study was to examine the trends in interventional research and analyze the contents and results of intervention through a systematic literature review of the domestic research literature, suggesting the effect of an oral care program on elementary school students. Methods: A total of 262 articles were retrieved initially, and the duplicate articles were then removed, excluded after screening titles, abstracts, and full-text articles. Finally, a total of 16 papers were used in the review. Results: The study included 9 articles with the nonequivalent control group pretest-posttest design and 7 with the one-group pretest-posttest design. All articles were of non-randomized studies. The most common index of the interventional effect was dental plaque. Further, oral health behaviors and knowledge, perception, self-efficacy, and DMFT index were common indices. In the quality assessment, in the “blinding of outcome assessment” among six items of ROBANS, 12 studies showed a high risk of bias. Conclusions: In order to develop an interventional oral health care program for elementary school students and evaluate the effectiveness, a strict research design and qualitative improvement of research reports are required, and continuous research should be conducted to develop a systematic protocol.

Objectives: Previous studies have reported inconsistent findings in the association between dental diagnostic X-ray exposure and thyroid cancer. This study was a meta-analysis of case–control studies evaluating the association between exposure to dental radiation and the thyroid cancer risk. Methods: We searched the PubMed and EMBASE databases to identify studies on dental radiation and thyroid cancer risks that were published up to September 2018. Quality of studies was assessed using the Newcastle–Ottawa scale. A fixed-effects model was used to estimate pooled odds ratios (ORs) and 95% confidence intervals (CIs) using STATA 14.0. Potential publication biases were evaluated using Egger's test and Begg's funnel plot. Results: From the literature search, we included six case–control studies in this meta-analysis. The meta-analysis using the fixed-effects model found that dental X-ray exposure was associated with 2.34 times increased risk for thyroid cancer (OR=2.34, 95% CI=1.79–3.21). There was no heterogeneity in the data (p=0.662, I2 =0%). Egger's test showed that there was no publication bias (p=0.532). Conclusions: This meta-analysis confirmed the association of dental X-ray exposure and thyroid cancer risk. The current results underscore the importance of applying safety regulations at dental clinics to protect thyroid glands during dental radiography examinations.