Background: Although the prevalence of complete edentulism has decreased over the past decade, there are significant regional differences. For example, among adults aged 15 and older in the United States, the prevalence of complete edentulism is 4.9%, while in China, approximately one in four elderly individuals is completely edentulous. The primary treatment for this condition is complete dentures. Over the past ten years, the use of digital technology for fabricating complete dentures has increased substantially, prompting comparative studies between conventionally fabricated and digitally fabricated complete dentures. Aim: To compare the initial fit of complete maxillary dentures fabricated using digital and conventional methods, and to evaluate the dimensional changes after one month of denture use. Materials and Methods: This study was conducted based on the decision No. 24-25/05-02 of the Research Ethics Committee of the Mongolian National University of Medical Sciences. The study was carried out at the School of Dentistry, specifically in the Department of Prosthodontics and the Digital Technology Laboratory. A total of 30 complete dentures-15 fabricated digitally and 15 fabricated using conventional methods-were made for 15 patients with complete edentulism. Each denture was used for a period of one month, after which denture retention was re-evaluated using a force gauge (AMF500). Statistical analysis was performed using SPSS version 26.0, and differences were considered significant at p<0.05. Result: To compare the differences between digital and conventional methods at baseline, the Wilcoxon Signed-Rank Test was performed. The results showed a statistically significant difference (Z=-2.045, p=0.041, p<0.05). At the one-month follow-up, the Friedman test revealed a significant difference among the four groups (χ²(3)=11.40, p=0.01). Pairwise comparisons using the Wilcoxon Signed-Rank Test indicated that retention of conventional complete dentures at one month was significantly different (Z=-2.803, p=0.005), and retention of CAD/CAM-fabricated complete dentures at one month was also significantly different (Z=-2.497, p=0.013). However, comparison of baseline and one-month retention between CAD/CAM and conventional dentures showed no statistically significant difference (p=0.059). Conclusion At baseline, retention of conventional complete dentures was statistically higher compared to CAD/CAM-fabricated dentures. At the one-month follow-up, retention improved for both conventional and digital dentures.

Background: In the field of oral and maxillofacial prosthetics, implant-supported or tooth-supported prostheses have been proven to be an effective treatment option for patients with partial edentulism. However, complete dentures remain the sole treatment option for fully edentulous patients. Over the past decade, the use of CAD/CAM technology for fabricating complete dentures has increased substantially, leading to a growing number of studies comparing conventional complete dentures with those produced using CAD/CAM. In our country, however, there is a scarcity of research comparing the retention of maxillary complete dentures fabricated by conventional and CAD/CAM methods. Aim: To compare the retention of maxillary complete dentures fabricated by CAD/CAM and conventional methods. Materials and Methods: This study was conducted using a clinical trial design. The research was carried out at the Department of Prosthodontics, School of Dentistry, Mongolian National University of Medical Sciences (MNUMS), utilizing the Digital Technology Laboratory. The retention of 15 maxillary complete dentures fabricated by CAD/CAM and conventional methods was measured using a force gauge (AMF500). Statistical analysis was performed using SPSS version 26.0, and differences were considered statistically significant at p<0.05. Result: The mean retention of maxillary complete dentures fabricated by the conventional method (8.85±9.10N) was higher than that of dentures fabricated by the CAD/CAM method (4.95±2.57N). To assess the difference between the two fabrication methods, the Wilcoxon Signed Ranks Test was performed. The results showed Z=-2.045, p=0.041 (p<0.05), indicating that the retention of conventional dentures was statistically significantly higher than that of CAD/CAM dentures. Conclusion The retention of maxillary complete dentures fabricated by the conventional method was statistically significantly higher than that of dentures fabricated by the CAD/CAM method.

Introduction: Mongolia is one of the most vulnerable countries to climate change due to its geographical location, climate conditions, level of development and lifestyle of the population.
The “Impact of Climate Change on Drinking Water, Health and Adaptability” study report has shown that climate change is affecting the quality and composition of drinking water, drying up many rivers and lakes and reducing groundwater levels.
There was a strong positive correlation between precipitation and air temperature and dysentery, diarrhea and salmonellosis, while there was a strong negative correlation between precipitation, air temperature and viral hepatitis. Goal: The goal of the study was to reveal correlation between meteorology parameters and some intestinal infectious diseases and human health in Mongolia. Material and Methods: We evaluated climate and certain morbidity (intestinal infections) indicators for the last 15 years (2005-2019) using descriptive survey methods. The methodology of the survey has developed and discussed at the Scientific Council meeting of NCPH, 12th of Oct, 2020. The methodology of the survey has developed and discussed at Medical Ethics Reviews Committee of MOH on 23rd. of June, 2021. Results: On the other hand, the average air temperature has intensively risen for the last three decades since 1990 with the warmest average temperature between 2001-2010, whereas the coldest average temperature has been observed between 1951-1960. In 2005-2009, the prevalence of intestinal infections per 10.000 population was 0.8 cases of salmonellosis, 11.2 cases of dysentery, 0.2 cases of diarrhea, and 39.0 instances of hepatitis A. Throughout 2015 and 2019, the prevalence of salmonellosis fell by 0.1 per 10.000 population, dysentery by 2.9, diarrhea by 0.1, and hepatitis A by 0.1. Conclusion A seasonal trend in intestinal infections was observed (p<0.001). Strong positive correlation was found between high temperature and some intestinal infections (hepatitis А, dysentery, salmonellosis) respectively.

Introduction: Soum and family health care centers (primary health care centers) provide public health services to reduce the negative effects of air pollution on health. In order to decrease the risk factors due to air pollution, it is crucial for health professionals, who are providing health care services to the public, to have the knowledge, attitude and practice to give an advice for residents on how to protect their health from air pollution. The “Air pollution and child health” report from WHO recommended that responsibility of health professionals must include knowing the latest information on air pollution, doing a research, spreading the knowledge, educating families and community and learning from them as well, proposing solutions, and finding a solution for policy developers and decision makers in other sectors. Therefore, we conducted this survey with purpose to determine the long-term effects of air pollution on population psychology and lifestyle and to evaluate the level of knowledge, attitude, and practice of health professionals on how to protect a health from air pollution. Goal: Evaluate the level of knowledge, attitude, and practice of health professionals on air pollution. Material and Methods: In 2019, this study conducted a cross-sectional design and collected quantitative and qualitative data. 88.4% of (n=532) health professionals from 48 secondary health care centers (SHCC) and 64 family health care centers (FHCC), which are agents that implement UNICEF project, in Bayanzurkh, Songinokhairkhan districts and Bayankhongor aimag were participated in the survey. Results: 97.4% of the participants agreed that air pollution has negative effects on human health. 99.5% of participants did not know the Mongolian standard for the acceptable level of air pollutant particulate matter (PM) and 73.1% of all participants did not receive information about air quality index. 82.1% of participants regularly give prevention advice with the purpose of protecting maternal and child health from air. The participants who worked for more than 21 years and who are older than 51 years old were more likely to give advice (p<0.05). As for the reasons for not giving advice about air pollution for protecting the maternal and child health, 29.2% of participants answered the service time is not enough, and 22.9% mentioned the lack of knowledge and information. 30.5% (162) of participants were not satisfied with their skill to give an advice on how to protect maternal and child health from air pollution. 86.8% of participants indicated that they did not receive proper training on air pollution and prevention from air pollution. Conclusion There is a need to provide training and information on how to protect maternal and child health from air pollution for health professionals.

Background: Headache disorders are most prevalent public-health problem. Worldwide, among the adults 46% suffer from primary headache, where the migraine presents 11% and tension type headache (TTH) presents 25%. Recently, one type of the primary headache, medication overuse headache tends to increase. Nowadays, there is no sufficient study about primary headache in Mongolia. So that, it is necessary to investigate prevalence, clinical type and risk factors of the primary headache. Purpose: To study prevalence and risk factors of primary headache in Mongolia. Materials and Methods: This cross-sectional study was carried out from June to November of 2017. Participants aged 18-65 years old were randomly selected from four provinces and three districts of Ulaanbaatar city. The diagnosis of headache was made using the International Classification of Headache Disorders-3 beta. Statistical analysis was performed on SPSS-23 program. Results: A total of 2043 participants (812 men and 1231 women) were reviewed. The participant’s average age was 38.6±13.4years. 1350 (66.1%) participants reported recurrent headache within the last 1 year. Of the total study population, the prevalence rate of primary headache was 1305 (63.9%). Number of people who suffered from migraine was 494 (24.2%), significantly greater in female than male participants (p=0.0001), with most frequent attacks at age 26-45 years. The risk of migraine associated with sex, education and family history (p=0.001). 592 (29.0%) of participants had TTH, mean age of them was 37.7±5.24, significant high rate in female than men, risk of TTH depends on education and job. The medication overuse headache was diagnosed at 116 (5.7%), 29.4% in men and 70.5% in women with average of 45.6±11.4 and 43±12.7 respectively. Among the participants 38.6% used medications, 28% people had one drug, 8.5% two drugs and 2% used three or more drugs. Use of non-steroid anti-inflammatory drugs (NSAID) made up major percent in headache patients. Increased frequency of medication and multidrug affected to medication overuse headache (p=0.008). Conclusion More than half of studied population had primary headache. Migraine was in 24.2%, TTH in 29.0% of people, and associated with sex, education and family history. Use of non-steroid anti-inflammatory drugs made up major percent in headache patients.

BackgroundClimate change, as defined by the United Nations Convention on Climate Change, is a “Change of climate which is attributed directly or indirectly to human activity that alters the composition of the global atmosphere and is observed over time”. In 2001 an Initial Communication on Climate Change was prepared by the Government as part of its obligations under the UNFCCC. One of its recommendations was for “creating public awareness among a wide range of stakeholders including public, private and community sector organizations”. GoalThe main goal of the study was to develop recommendations and measures on prevention from diseases and adaptation to climate change by assessing knowledge, attitude and practice (KAP) of population towards climate change. Based on the main goal the following objectives were setup. Therefore addressing the different levels of knowledge and types of attitudes and practices people have towards climate change must initially be dealt with at the local level where site specific variations can be accounted for. Once research has been undertaken at the local level it can later inform decisions and policy at the regional, continental and global levels on how to incorporate site specific variations with in the greater context of the global threat.Objectives:1. To determine knowledge and attitude of population towards climate change;2. To determine practice of population on some adverse consequences of climate change;3. To develop recommendations and measures on prevention from and adaptation to climate change;Materials and MethodsThe study was at once carried out by means of questionnaire. In order to assess KAP of population, the data was collected using a card with 38 questions in three chapters which previously produced and ratified. The questionnaire was structured into 4 sections; demographics, knowledge, attitudes and practices. Two sums in an aimag from each climate zone of Mongolia were selected. In total, 2258 respondents aged 15 to 64 were involved from eight sums in four aimags (Zavkhan, Selenge, Dornod and Umnugovi), and two districts in Ulaanbaatar. The study data was input to computer using EPIDATA-3.6 software and statistically analyzed using SPSS-18.0 software.ResultsA total of 2258 individuals were interviewed. 44.1% 44.1% (995) of the participants was residents of Ulaanbaatar city and remained percentages accounted for residents living in the center of aimags and soums. 56.7% (1281) of participants were women and 43.3% (977) were men aged with 35.2±15.1 in average. Most of the study participants had educated with medium level (34.8%) and high level (30.0%). Employment percentage is 47.5% (1073). However, most respondents interpreted the meaning of climate change as “a change in weather,” “a change in normal climate conditions,” or “a change in temperature” – answers that requires more common sense than climate change savvy. Global warming is one of the evident of climate change. To know study participants awareness about climate change we used terminology of global warming. 25.3% (571) of the total participants answered that climate change revealed by the overheating or warming earth surface. 42.4% of the respondents answered the climate change could affect to health, 33.2% to environment and 16.3% to economy. 84.5% (1908) of the study participants agreed with that climate change has been started. Most of them (71.3%, 1824) allowed that people’s improper use of nature tend to global warming. When ranging the protection practices during the strong storm means of timbering the houses or gers accounted for 42.5% (960). Study participants supported the following activities; 41.2% (931) agreed that is it necessary to increase health services and 34.1% (769) suggested that it is better to enhance training and propagation for increasing awareness of population about climate change adaptation procedures and some information on climate changes and protection events. 85.2% (1923) of the study participants answered that they want to get the information on climate change from public TV.ConclusionsAlthough knowledge on global warming as the climate change was poor among the respondents, they agreed the climate change has already been started worldwide as well as in Mongolia. Only half of the respondents have had practice to prevent themselves from natural disaster.

Background: The Incidence of Intracranial haemorrhage (ICH) in childhood compare to adulthood not very common. The multifactorial etiology ICH may involve coagulation disturbance, venousinfarction, infection, heart congenital abnormalities, birth asphyxia and trauma. ICH is a major cause of morbidity and mortality in neonates and it’s related to vitamin K deficiency. The previous studies have shown, that 37.8% of children with Cerebral Palsy and 31.2% of infants with hypoxic-ischemic encephalopathy had ICH and 48.2% of dead premature infants due to ICH. The number of infants with ICH are increasing year by year. Therefore, the aim of this study was to identify and explore influential factors and causes of ICH among infants in own country.Materials and Methods: The present study was conducted atseveral departments such as PICU, neurology, and cardiology of the State Maternal and Child Health Research of Mongolia. Sixty one patient with ICH involved in the case group and one hundred twenty two infants were involved in control group.Statistical methods. The Mann Whitney U and Fisher’sexact tests were used to compare clinical characteristics of thecontrol infants and infants with ICH. Ethics. The present study was approved by the ethics committee of the MoH and MCHRC. Informedparental consent was obtained for each patient before entry into the study.Results: Among children with ICH 95.1% were under one year and just 4.9% were aged 1-5 years. The following causes of ICH in infants aged under one year were identified: hemorrhagic disorder-39.7%; HIE-13.3%, trauma- 10.4%, unknown reason-12.1% and congenital heart abnormality- 3.4% and Intrauterine infection – 3.4%. However, most common cause of ICH among children aged 1-5 years was trauma – 66.7%, and 33.3% were related to infection.Conclusion:1. The incidence of ICH is high among infants.2. The most common cause of ICH among children were hemorrhagic disorder-37.7%; HIE-13.1%; trauma-13.1%; infection-sepsis -14.8%; intrauterine infection- 9.9%; congenital abnormality of the brain- 3.3% and congenital heart defect-3.3%.3. Influential factors of ICH are preeclampsia (OR=8.6), CS (OR=3.4), newborn asphyxia (OR=3.3) and pathological jaundice (OR=6.8).