Oral health-related quality of life (OHRQoL) is utilized in health services research to examine trends in oral health and population-based needs assessment. To determine the impact of oral diseases on everyday life, measures of oral quality of life are needed. In addition to common disease-based measures, they assess the need for oral care to evaluate oral health care programs and treatment management. The aim of this study was to evaluate the OHRQoL among Croatian university students. A cross-sectional study was conducted among 895 students (mean age 22 ± 4 years; 54.75% were females). The data collection was carried out through a self-administered short-form oral health impact profile (OHIP-14) questionnaire which comprises 14 items that describe 7 subscales. Each subscale is named according to its constitutive items: functional limitation, physical pain, psychological discomfort, physical disability, psychological disability, social disability and social handicap. The quality of data was descriptively analysed and internal consistency reliability was assessed by Chronbach’s alpha coefficient. Pearson’s correlation was performed on the OHIP-14 total score and 7 subscale scores. The level of significance was set to p < 0.05. The prevalence of reported impact on OHRQoL was 31.84% and the mean OHIP-14 score was 11.66 ± 8.72. Chronbach’s alpha for the OHIP-14 total score was 0.91 (range for subscales: 0.70–0.87). Total OHIP-14 score was correlated with each of the seven subscales (correlation range: 0.56–0.84). The psychological discomfort and physical pain subscales recorded the highest impact with 56.09% and 24.47%, respectively, while the least impact was recorded in the physical disability subscale with 13.35%. The mean OHIP-14 score of the students in this study reflects that the oral health status of most of the students did not significantly affect their OHRQoL. However, the psychological discomfort and physical pain subscales were the most severely affected aspects of their OHRQoL. The OHIP-14 had reasonable reliability in relation to subjective global oral health indicators among students and thus appears to be a useful OHRQoL measure in this context.

The aim of this study was to detect molar–incisor hypomineralization (MIH) and caries prevalence in eight-year-old children with early mixed dentition in Eastern Croatia. There is a lack of data on MIH in Croatia. There were 729 children examined in total: 356 (48.83%) were female and 373 (51.16%) were male. The presence of MIH was found in 95 children, the prevalence of MIH was 13%, and the remaining 634 (87%) did not have any changes associated with MIH. The prevalence of caries overall in the population of examined children was 11.48%. In the group of children with MIH, the prevalence of caries was 24.14%, while in the group of children with no MIH, the prevalence of caries was 11.18%. Teeth had a Decayed, Missing, and Filled Teeth (DMFT) index of 1.2, the value of the SiC index was 1.4, and the decayed, missing, and filled teeth (dmft) index for deciduous teeth was 5.8. Children with MIH had a caries index of DMFT 2.1, and the value of the SiC index was 2.6. The index of caries for non-MIH children was DMFT 1.1 and the SiC index was 1.2. MIH prevalence in Croatia is more common in girls than in boys. MIH has a significant impact on children’s development and is a major factor in the occurrence of caries.

Green synthesis employs environmentally friendly, biodegradable substances for the production of nanomaterials. This study aims to develop an innovative method for synthesizing silver nanoparticles (AgNPs) using a methanolic extract of Fomes fomentarius L. Fr. as the reducing agent and to assess the potential antibacterial properties of the resulting nanoparticles. The successful synthesis of AgNPs was confirmed through characterization techniques such as UV-visible (UV-Vis) spectrophotometry, Fourier-transform infrared spectroscopy (FT-IR), and powder X-ray diffraction (PXRD). The UV-Vis analysis revealed an absorption peak at 423 nm, while FT-IR identified key phytochemical compounds involved in the reduction process. PXRD analysis indicated a face-centered cubic (fcc) structure with prominent peaks observed at 2θ = 38°, 44.6°, 64.6°, and 78°, confirming the crystalline nature of the AgNPs, with a crystallite diameter of approximately 24 nm, consistent with TEM analysis. The synthesized AgNPs demonstrated significant antibacterial activity, particularly against S. aureus, with higher efficacy against gram-positive bacteria.

The purpose of this study was to evaluate the knowledge regarding tooth avulsion and dental first aid response among Croatian students of the Faculty of Education. A cross-sectional study was conducted among students. Participants (N = 235) were female with an average age of 21.9 ± 2.7 years. The questionnaire contained 10 close-ended questions with two to eleven possible answers. Every participant chose one correct answer. Statistical significance was determined using a Chi-square test. Majority of participants had never received any kind of information on management of a knocked-out tooth. Questions in the nature of tooth injuries, a knocked-out tooth, tooth replantation and whether the knocked-out tooth should be placed back were answered confirmatively by 40.43%, 83.40%, 57.02% and 62.55% of participants, respectively. The questionnaire showed that 18.78% of participants were aware that replantation should be performed within 30 min. The appropriate cleaning and transport medium was chosen by 40.85% and 35.31% of participants, respectively. A nearby dentist would be visited by 66.38% of students. Only 8.08% of participants provided a correct answer to all of the knowledge-based questions. The “I do not know” answer was chosen by 18.30% of participants whenever it was offered. This indicates that the majority (89.78%) were not aware of the fact that the procedure they chose would be inappropriate. The current study confirmed that future primary school teachers have a lack of knowledge for immediate response to tooth avulsion, leaving small chances for a successful prognosis of tooth replantation.

The increasing accumulation of agricultural waste poses a significant environmental challenge, highlighting the need for sustainable waste valorization strategies. This study presents a green synthesis approach for silver nanoparticles (AgNPs) using walnut septum waste, an underutilized bioactive-rich by-product. Ultraviolet-visible spectrophotometry confirmed AgNP formation with a characteristic surface plasmon resonance band at 407 nm. Fourier-transform infrared spectroscopy, powder X-ray diffraction, and transmission electron microscopy revealed spherical, crystalline AgNPs (26–27 nm) with stability over 3 months. The antibacterial efficacy of these AgNPs was assessed against Gram-positive ( Bacillus subtilis , Staphylococcus aureus ) and Gram-negative ( Escherichia coli , Pseudomonas aeruginosa ) bacteria using the broth microdilution method. The AgNPs exhibited strong antibacterial activity, with minimum inhibitory concentrations ranging from 31.25 to 62.5 µg·mL ⁻¹ , demonstrating superior effectiveness compared to the unprocessed walnut septum extract. These findings highlight the dual benefits of repurposing agricultural waste for nanomaterial synthesis while offering an eco-friendly alternative to chemically synthesized nanoparticles. The results support the potential biomedical and environmental applications of AgNPs in antimicrobial coatings, wound dressings, food preservation, and water purification. This study provides a sustainable, cost-effective, and scalable method for AgNPs production, contributing to green nanotechnology and solid waste management.

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.