Aim: The aim of this study was to investigate the dental status of alcoholics; to evaluate the relationship of unstimulated and stimulated saliva pH on their decayed/missing/filled teeth (DMFT); and to evaluate the relationship of unstimulated and stimulated salivary flow rate on their DMFT. Method: A cross-sectional study was conducted in patients treated for alcohol dependency (n=70; mean age 41.7 years) and a control group of non-alcoholics (n=70; mean age 39.1 years). Examinations for dental caries were conducted using the World Health Organization (WHO) criteria and questionnaires. The correlation between nominal variables was determined using χ 2 test (α=0.05). The correlation between interval variables was determined using Pearson's correlation coefficient. Result: The mean DMFT was similar in alcoholics (14.40) and the control group (13.44) (p>0.05). There was a statistically significant correlation between alcoholism and unstimulated salivary flow rate (p<0.05), but no relationship on DMFT was recorded. No statistically significant differences were found between alcoholics and controls in terms of stimulated salivary flow rate (p>0.05) or stimulated salivary flow on DMFT (p>0.05). There was a statistically significant correlation between alcoholism and the pH value of stimulated saliva (p<0.01). There was no correlation between the amount of alcohol consumed and the number of carious lesions (p>0.05). Conclusions: No major differences were found with respect to overall DMFT in alcoholics compared to the control group. Alcoholism and stimulated salivary flow rate showed no correlation. Unstimulated salivary flow rate as well as the pH values of both unstimulated and stimulated saliva, were lower in the alcoholic group.

Objective: The aim of the study was to evaluate caries prevalence in a sample of schoolchildren aged 6 to 16 years from rural and urban areas in Croatia. Methods: Using standardized World Health Organisation (WHO) criteria, the oral health status of 1,589 children (265 from rural and 1,324 from urban areas) was assessed by recording the following indices: DMFT (decayed, missing, filled permanent teeth), deft (decayed, extracted, filled primary teeth), DMFS (decayed, missing, filled surfaces-permanent teeth), defs (decayed, extracted, filled surfaces-primary teeth) and SiC (Significant Caries Index). Rural areas were Štitar and Babina Greda municipalities in Slavonia and urban areas were the cities of Županja (Slavonia), Zagreb and Dubrovnik. Results: Half of the examined children (50.0%) had caries (D component in DMFT), with 46.0% of these being from urban and 70.2% from rural areas. The median DMFT among children was 2, 4 (rural) and 2 (urban) (p < 0.001). Among 12-year-olds, the median DMFT was 4 (rural) and 3 (urban), and mean DMFT was 3.4. The median DMFS for rural area was 5 and for urban area 3 (p < 0.001). The median deft was 1.00 for rural and 1.00 for urban, while the highest value was found among 6-year-olds at 9 in rural and 7 in urban areas. The median SiC was 4, 4 (urban) and 5 (rural). Conclusion: Schoolchildren from urban and rural areas in Croatia differ significantly in caries prevalence. They fall into the medium DMFT classification group according to the WHO, which indicates the need for a comprehensive oral health preservation programme.

SUMMARY The aim of this in vitro study was to evaluate the radiopacity of 19 current dental flowable composite materials by a digital technique. Digital radiographs were obtained with a CCD sensor using an aluminum step wedge, a 1-mm-thick tooth slice, and a 1-mm-thick flowable composite specimen using five different combinations of exposure and voltage. The radiopacity in pixels was determined using Digora 2.6. software. The equivalent thickness of aluminum for each material was then calculated based on the calibration curve. All of the tested flowable composite materials had higher radiopacities than that of dentin, but in almost every combination of exposure and voltage, there were some composite materials that exhibited radiopacities equal to or slightly greater than enamel p&gt;α; α=0.01). Of the flowable composite materials tested, 37% showed lower radiopacities than enamel, and 21% of the tested materials had higher radiopacities than the 3-mm aluminum equivalent. The highest radiopacity at all exposure values was produced by the Majesty Flow and Charisma Opal Flow materials, which had radiopacities almost twice that of enamel. Flowable composite materials should have radiopacities greater than that of enamel (ISO 4049), an important consideration for the introduction of new materials to the market. The digital radiopacity analysis techniques used in this study provide an easy, reliable, rapid, and precise method to characterize radiopacity of dental flowable composite materials.

The aim of this study was to determine the values of DMFT/DMFS and dft/dfs in the examined groups of children and the assessment of the mothers of the examined groups of children related to the oral health of their children. The research included children from the SOS Children’s Village in Croatia as well as children from biological families from rural and urban areas. The children were examined by the visual–tactile method according to the standardized World Health Organization criteria. dft/DMFT and dfs/DMFS indices were calculated. An analysis of completed questionnaires was made. The children from the SOS Children’s Village demonstrated the lowest mean values of the dft/dfs (2.42/3.31) and DMFT/DMFS (1.61/2.23) indices compared to children from rural and urban areas. The Kruskal–Wallis test showed a significant difference (p = 0.01) in SiC index values between the examined children. In the groups of children from the SOS Children’s Village and from the rural area compared to the children from the urban area, oral hygiene was singled out as the most important factor in the analysis of the main components. An equally significant factor for all the respondents is the assessment of oral health and eating habits. The least significant factor for the group of children from the SOS Children’s Village is socio-economic status, which is the most significant for the children from the urban area. The children from the SOS Children’s village have the lowest dft/DMFT, dfs/DMFS, and SiC indices. The most important factor influencing oral health in the group of children from the SOS Children’s Village that stands out is oral hygiene, and the least important is the socio-economic status. The assessment of oral health by the SOS mothers does not differ from the assessment of biological mothers of children from rural and urban areas.