Department of Community Medicine, Faculty of Health Sciences, UiT The Arctic University of Norway, N-9037, Tromsø, Norway.
International School of Public Health, Northern State Medical University, Troickij av. 51, NSMU, ISPHA, office 1252, 163061, Arkhangelsk, Russia.
BMC Oral Health. 2017 Nov 28;17(1):136. doi: 10.1186/s12903-017-0426-x.
Little information exists about the experience of and risk factors for dental caries in young adults in Russia. We investigated dental caries experience and determinants in medical and dental students in North-West Russia.
This cross-sectional study included 442 medical and 309 dental undergraduate students of Russian nationality aged 18-25 years from the Northern State Medical University, Arkhangelsk, Russia. Information on socio-demographic factors and oral health behaviour (regularity of dental visits, frequency of tooth-brushing, using toothpaste with fluoride, and skipping tooth-brushing) was obtained from a structured, self-administered questionnaire. Dental caries experience was based on the decayed (D) missing (M) filled (F) teeth (T) index and the Significant Caries (SiC) index, which were assessed through dental examination. Students with a DMFT index ≥9 were placed in the SiC group. Negative binomial hurdle and multivariable binary logistic regressions were used for statistical analyses.
The prevalence of dental caries (DMFT >0) was 96.0%, overall mean DMFT index was 7.58 (DT: 0.61, MT: 0.12, and FT: 6.84), and the corresponding SiC index was 12.50. Age 21-25 years (incidence rate ratio [IRR] = 1.09, 95% confidence interval [CI]: 1.01-1.18), being a female (IRR = 1.10, 95% CI: 1.01-1.20), high subjective socioeconomic status (SES) [IRR = 1.11, 95% CI: 1.02-1.21], and skipping tooth-brushing (IRR = 1.09, 95% CI: 1.00-1.19) were associated with a higher DMFT index. DMFT index also increased among students who reported regular dental visits (IRR = 1.22, 95% CI: 1.10-1.36), but their odds of being in the dental caries-free group decreased (odds ratio [OR] = 0.38, 95% CI: 0.18-0.82). Significant predictors of being categorised to the SiC group were older age (OR = 1.41, 95% CI: 1.03-1.92), high subjective SES (OR = 1.57, 95% CI: 1.13-2.19), and regular dental visits (OR = 2.34, 95% CI: 1.56-3.51).
A high prevalence of dental caries and high DMFT index, with a dominance of FT, were observed in our Russian medical and dental students. Age, sex, subjective SES, regular dental visits, and skipping tooth-brushing were determinants of dental caries experience.
俄罗斯年轻人的龋齿经历和风险因素的相关信息很少。我们研究了俄罗斯西北部医科和牙科学院学生的龋齿经历和决定因素。
本横断面研究纳入了俄罗斯北部国立医科大学的 442 名医学生和 309 名牙科学员，年龄为 18-25 岁，均为俄罗斯国籍。通过结构问卷调查收集了社会人口统计学因素和口腔健康行为（定期看牙医、刷牙频率、使用含氟牙膏和跳过刷牙）的信息。龋齿经历基于龋齿（D）、缺失（M）、填充（F）牙（T）指数和显著龋齿（SiC）指数进行评估，通过口腔检查进行评估。DMFT 指数≥9 的学生被归入 SiC 组。采用负二项式障碍和多变量二元逻辑回归进行统计分析。
龋齿患病率（DMFT>0）为 96.0%，总体平均 DMFT 指数为 7.58（DT：0.61，MT：0.12，FT：6.84），相应的 SiC 指数为 12.50。21-25 岁年龄（发病率比 [IRR] = 1.09，95%置信区间 [CI]：1.01-1.18）、女性（IRR = 1.10，95% CI：1.01-1.20）、较高的主观社会经济地位（IRR = 1.11，95% CI：1.02-1.21）和跳过刷牙（IRR = 1.09，95% CI：1.00-1.19）与更高的 DMFT 指数相关。定期看牙医（IRR = 1.22，95% CI：1.10-1.36）也会增加学生的 DMFT 指数，但他们处于无龋齿组的几率降低（比值比 [OR] = 0.38，95% CI：0.18-0.82）。被归类为 SiC 组的显著预测因素是年龄较大（OR = 1.41，95% CI：1.03-1.92）、较高的主观 SES（OR = 1.57，95% CI：1.13-2.19）和定期看牙医（OR = 2.34，95% CI：1.56-3.51）。
我们的俄罗斯医学生和牙科学员中，龋齿的患病率和 DMFT 指数都很高，FT 占主导地位。年龄、性别、主观 SES、定期看牙医和跳过刷牙是龋齿经历的决定因素。
