Background People of all age and gender groups are at risk of dental diseases; however, some groups, such as pregnant women, are more vulnerable than others due to their specific physiological situations. The protection of maternal and fetal is critical. Therefore, the present study intended to investigate the relationship between the Decayed, Missing, and Filled Teeth (DMFT) index and the number of pregnancies. Methods The present cross-sectional study was performed using the Tabari Cohort Study (T.C.S.) data. Data of 5,496 women enrolled in the T.C.S. were included in the study. After obtaining the approval of the Ethics Committee, the related data on the variables of age, age at the first pregnancy, number of pregnancies, total number of teeth at the time of examination, number of DMFT, employment status, socioeconomic status, educational level, residence location, body mass index, and the status of diabetes mellitus, hypertension, and cardiovascular diseases were extracted. Finally, data analysis was performed in the STATA software (version 14). Results The mean DMFT index in women with 1, 2, 3, 4, 5, 6, and more than six pregnancies were obtained at 12.74 ± 7.11, 13.09 ± 7.06, 14.80 ± 7.81, 17.07 ± 8.11, 19.82 ± 9.02, 22.89 ± 8.98, and 26.17 ± 8.01, respectively (P < 0.001). Using the multivariate linear regression and adjusting the effect of potential confounding variables, it was found that the DMFT index increased by 34% for each unit increase in the number of pregnancies (β = 0.34, P < 0.001). Conclusions According to our results, there was a significant relationship between the DMFT index and the number of pregnancies. The DMFT index was increased with an increased number of pregnancies. Therefore, oral healthcare promotion should receive special attention in healthcare planning and related policies by raising awareness and providing easy access to dental services for women of childbearing age, especially pregnant women.

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Background The association between caries index, which is diagnosed by Decayed, Missing, and Filled Teeth (DMFT), and asthma has been assessed in several studies, which yielded contradictory results. Meta-analysis is the statistical procedure for combining data from multiple studies and reducing the differences among parameters due to the increased number of studies involved in the analysis process. Therefore, the present study aimed to determine the relationship between dental caries using decayed, missing, filled teeth indices (DMFT, dmft, and DMFS indices) and asthma using meta-analysis. Methods Databases were searched using such keywords as “Asthma,” “Caries,” “DMFT,” “DMFS,” “Iran,” and OR operators, AND, and NOT. After the elimination of duplicate documentation, the articles which met the inclusion criteria were selected. Quality assessment was performed based on the Newcastle-Ottawa Quality Checklist (NOS). After that, standardized mean difference (SMD) of DMFT, dmft, and Decayed, Missing, and Filled Surfaces (DMFS) indices were estimated. Results The number of 10 evidence was extracted out of nine studies in which mean oral health indices were compared between asthmatic patients and the control group. Out of 10 evidences that examined the association of DMFT, dmft, and DMFS with asthma, these indices were higher in asthmatic patients than the control group in seven cases. In three cases, these differences were statistically significant. The SMD of DMFT, dmft, and DMFS indices between asthmatic patients and the control group at the confidence level of 95% were reported as 0.29 (− 0.05, 0.62), 0.48 (− 0.20, 1.17), and − 0.05(− 0.30, 0.21), respectively. Conclusion According to the results, the prevalence of dental caries is higher among patients with asthma than in the control group. Therefore, having asthma could be considered a risk factor for the development of dental caries.

Introduction Scientific evidence of the association between Decayed, Missing, and Filled Teeth (DMFT) and thalassemia are conflicting and difficult to establish conclusions. Therefore, this study aimed to determine the relationship between dental caries (using the DMFT index) and thalassemia major using meta-analysis. Methods Databases were searched using such keywords as “Thalassemia,” “Caries,” “decay,” “DMFT,” “Iran,” and OR operators, AND, and NOT. After the elimination of duplicate documentation, the articles which met the inclusion criteria were selected. Quality assessment was performed based on the Newcastle-Ottawa Quality Checklist. Thereafter, the standardized mean difference of the DMFT index was estimated. Results In eight studies, the mean DMFT was compared between patients with thalassemia major and the control group. In six studies, the mean of this index was higher in patients with thalassemia major than in the control group and in all six of the studies, the differences were statistically significant. The mean standardized difference of DMFT, D, M, and F were reported as 1.36 (0.41, 2.30), 2.63 (0.42, 4.84), 1.65 (−0.14, 3.45), and 0.02 (−1.67, 1.72), respectively. Conclusion The results of this meta-analysis indicated that DMFT index was more inappropriate in patients with thalassemia, as compared to the control group which represents the higher incidence of dental caries among patients with thalassemia compared to the control group.

Introduction: Dental treatments have a high-risk nature due to the close relationship between the patient and direct exposure to saliva, blood, etc. Concerns about the transmission of COVID-19 infection have led to the formation of some form of patient fear. Therefore, considering the importance of mental health, the present study was designed to investigate the degree of anxiety in people with COVID-19 through dentistry.Material and Methods: In the present descriptive study, 384 questionnaires were randomly distributed among the patients of Sari Dental Clinic in the period of April to June 2021. After the necessary explanations and obtaining informed written consent, the questionnaires were completed by the clients. Finally, the data were analyzed using SPSS V.22 software and statistical tests. Values greater than 0.05 were also considered significant.Results: In this study, 29.2% were male and 68.8% were female, and corona-related anxiety was more common in women and married people. As they got older, they tended to respond to higher options like most of the time or always. The higher the level of education, the less noticeable the unnecessary visits to the dental clinic.Conclusion: People were more worried about transmitting the disease to those around them and this anxiety was more in women than men. Married people were also more anxious than single people. Anxiety was significantly higher in the unemployed than in the employed. There was a significant relationship between degree and level of anxiety and people with higher education levels showed more anxiety.