International Journal of Dentistry最新文献

{"title":"Examining the Impact of Mesoporous Zinc Oxide Nanoparticle Inclusion on the Surface Microhardness and Roughness of Resin-Modified Glass Ionomer Cement: An In Vitro Analysis.","authors":"Zahra Jowkar, Zahra Kazemi, Fereshteh Shafiei, Seyed Ahmadreza Hamidi, Ali Moaddeli","doi":"10.1155/ijod/5491727","DOIUrl":"10.1155/ijod/5491727","url":null,"abstract":"<p><strong>Aim: </strong>Addressing the need for enhanced antibacterial properties in dental materials, this study investigated the impact of integrating zinc oxide nanoparticles (ZnO NPs) and mesoporous ZnO NPs into resin-modified glass ionomer cement (RMGIC) on microhardness and surface roughness.</p><p><strong>Materials and methods: </strong>Seventy disk-shaped RMGIC specimens were allocated to seven experimental groups: RMGIC (control), RMGIC with 3 wt.% ZnO NPs, 5 wt.% ZnO NPs, 7 wt.% ZnO NPs, 3 wt.% mesoporous ZnO NPs, 5 wt.% mesoporous ZnO NPs, and 7 wt.% mesoporous ZnO NPs. Surface roughness and Vickers microhardness were quantified using a surface profilometer and Vickers microhardness tester, respectively. Statistical analysis was carried out with a significance level set at <i>p</i> < 0.05.</p><p><strong>Result: </strong>Incorporating 5 wt.% of ZnO NPs or mesoporous ZnO NPs into the RMGIC yielded the highest microhardness values, while the control group exhibited the lowest microhardness values. Notably, the microhardness values of RMGIC with 3 and 5 wt.% ZnO NPs or mesoporous ZnO NPs were significantly higher than those of the 7 wt.% concentration. Regarding surface roughness, the control group displayed the highest roughness value, while RMGIC with 5 wt.% mesoporous ZnO NPs exhibited the lowest roughness values. Therefore, incorporating up to 5 wt.% ZnO NPs or mesoporous ZnO NPs led to decreased roughness values, with a notable increase observed at the 7 wt.% concentration, albeit still lower than the control group's roughness values.</p><p><strong>Conclusion: </strong>Incorporating 5 wt.% ZnO NPs or mesoporous ZnO NPs resulted in significantly enhanced microhardness values compared to the control group and the 7 wt.% concentration. The introduction of up to 5 wt.% NPs led to reduced surface roughness, with the 7 wt.% concentration showing a slight increase in roughness. These findings highlight the importance of optimizing NP concentrations, particularly mesoporous NPs, in RMGIC to enhance mechanical properties, offering valuable insights for the development of dental materials with improved performance characteristics.</p>","PeriodicalId":13947,"journal":{"name":"International Journal of Dentistry","volume":"2025 ","pages":"5491727"},"PeriodicalIF":2.2,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12500347/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145244181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Incisal Height on Fracture Resistance of Lithium Disilicate and Hybrid Ceramic Laminate Veneers.","authors":"Negin Yaghoobi, Majid Sahebi, Farzaneh Farid","doi":"10.1155/ijod/8923600","DOIUrl":"10.1155/ijod/8923600","url":null,"abstract":"<p><strong>Objectives: </strong>This in vitro study evaluated the effect of the incisal height and the type of restorative material on the fracture resistance of labial laminate veneers in teeth with severe loss of incisal edge.</p><p><strong>Methods: </strong>In total, thirty-two human maxillary central incisors were randomly allocated into two groups (<i>n</i> = 16). In one group the incisal edge was reduced 2 mm and in the other group 3.5 mm. In each group half of the laminates were made of lithium disilicate (IPS e.max CAD) and the other half of a polymer-infiltrated ceramic network (PICN; VITA Enamic). After cementation of laminates with a resin cement (Choice 2), all specimens were subjected to thermal cycling (5-55°C, dwell time 30 s, 5000 cycles) and cyclic loading (30 N, 1.3 Hz, 500,000 cycles). Next, specimens were loaded to failure in a universal testing machine, with a crosshead speed of 1 mm/min. The data were analyzed using two-way analysis of variance (ANOVA) and <i>T</i>-test (<i>α</i> = 0.05).</p><p><strong>Results: </strong>Mean load to failure of laminates with 2 mm and 3.5 mm incisal height was respectively, 620.11 N and 901.81 N, in e.max CAD; and 466.43 N and 460.14 N in the VITA Enamic group. Only in e.max CAD laminates was the difference between two subgroups was significant(<i>p</i>=0.025).</p><p><strong>Conclusions: </strong>According to the results of this study, increasing the incisal height of e.max CAD laminates increases their load to fracture. However, it has no significant effect on VITA Enamic laminates.</p><p><strong>Clinical significance: </strong>For anterior teeth that have lost more than 2 mm of incisal height, laminates made of lithium disilicate can be considered as a reliable option.</p>","PeriodicalId":13947,"journal":{"name":"International Journal of Dentistry","volume":"2025 ","pages":"8923600"},"PeriodicalIF":2.2,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12500350/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145244193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Influence of Implant Surface Modification on Marginal Bone Loss and Periodontal Health: A Cross-Over Randomized Clinical Trial.","authors":"Beatrice Longhi, Francesco Pera, Maria Menini, Francesco Bagnasco, Paolo Pesce, Marino Caroprese, Giuseppe Troiano, Khrystyna Zhurakivska","doi":"10.1155/ijod/8889144","DOIUrl":"10.1155/ijod/8889144","url":null,"abstract":"<p><p><b>Background:</b> Edentulism rehabilitation with short implants is a procedure of proven efficacy. To improve the biological aspects of the interface between the implant and hard and soft tissues, different implant and prosthetic surface treatments have been proposed, producing contrasting results. The aim of present study is to compare implants and transmucosal components with an anodized collar with those with a traditionally machined collar in terms of Marginal bone loss and periodontal indexes. <b>Materials and Methods:</b> 30 patients were treated with two adjacent 6 mm length and 4.3 mm diameter implants (Shard short, Mech&Human, Grisignano di Zocco, Italy), one with an anodized collar (Test group) and one with a traditional machined collar (Control group), randomly positioned. Definitive transmucosal straight multiunit abutments (MUAs) (Mech&Human, Grisignano di Zocco, Italy) of height 1 mm, with differentially treated surfaces, were immediately screwed. After 3 months, prosthetic rehabilitation with splinted zirconia crowns screwed to the MUAs was made. Marginal bone levels (MBLs) were evaluated at the time of implant placement (T0), after 3 months (T3), after 6 and 12 months (T6 and T12) through periapical radiographies. Periodontal indexes (probing depth [PD], bleeding on probing [BoP], and plaque index [PlI]) were evaluated at the same timepoints, with the maximum follow-up of 12 months. <b>Results:</b> Average marginal bone loss at T3 was 0.40 ± 0.31 mm in the Test group and 0.42 ± 0.40 mm in the Control group (<i>p</i>=0.76), reaching 0.63 ± 0.41 and 0.78 ± 0.43 mm at T12 in the Test and the Control groups, respectively (<i>p</i>=0.94). Physiological PDs, with average values ranging between 1.48 and 2.1 mm, were revealed around the implants in both the groups, and The PlI ranged between 0 and 1 in most cases, and BoP appeared in some cases with isolated bleeding spots after probe passing (mean values ranging between 0.20 ± 0.41 and 0.50 ± 0.52), with no significant differences between groups. <b>Conclusions:</b> Surface treatment with anodization of implant collar and transmucosal components seem to not influence marginal bone stability at 1-year follow-up, nor the condition of periodontal tissues. Long-term follow-ups are needed to confirm the results. <b>Trial Registration</b>: ClinicalTrials.gov identifier: NCT05766878.</p>","PeriodicalId":13947,"journal":{"name":"International Journal of Dentistry","volume":"2025 ","pages":"8889144"},"PeriodicalIF":2.2,"publicationDate":"2025-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12497520/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145244432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In Vitro Enhanced Bonding of Silane-Modified Adhesive Systems in Fiber Post Cementation.","authors":"Thais Pantoja de França, João Victor Frazão Câmara, Leonardo Queiroz Athias, Renata Antoun Simão, Maíra Prado","doi":"10.1155/ijod/5593764","DOIUrl":"10.1155/ijod/5593764","url":null,"abstract":"<p><p><b>Objective:</b> To compare the effect of applying silane prior to the adhesive with an adhesive containing silane in its composition in the cementation of fiber posts to conventional resin cement. <b>Materials and Methods:</b> In total 20 fiber posts were divided into two groups: silane/adhesive (G1): application of silane, followed by the application of the adhesive; and adhesive with silane (G2): application of adhesive containing silane in its composition. The test specimens were obtained from cylinders of AllCem Core resin cement, with the fiber postpositioned in the center of its long axis. The post/cement assembly was sectioned, and evaluated for bond strength (BS) by pushout test, and fracture pattern was analyzed with a stereoscopic microscope. <b>Results:</b> No significant difference in BS was observed between G1 (silane + adhesive) and G2 (adhesive containing silane). For fracture patterns, Type 3 (cohesive post and cement) was the most observed. <b>Conclusions:</b> The use of an adhesive containing silane, as per the adopted protocol, did not compromise BS when fiber posts were cemented with Allcem CORE cement. Both techniques exhibited similar results, with minor differences in fracture patterns.</p>","PeriodicalId":13947,"journal":{"name":"International Journal of Dentistry","volume":"2025 ","pages":"5593764"},"PeriodicalIF":2.2,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12496142/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145232323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Oral Health-Related Quality of Life and Oral Health Indices in Patients With Opioid Use Disorder Undergoing Methadone Maintenance Treatment.","authors":"Hodis Ehsani, Mohammad Mehdi Dindarloo, Anahita Lotfizadeh, Faezeh Alizadeh, Abbas Alipour, Kamaledin Alaedini, Maede Salehi, Ali Jafari, Alireza Arezumandi, Tahereh Molania","doi":"10.1155/ijod/5339532","DOIUrl":"10.1155/ijod/5339532","url":null,"abstract":"<p><p><b>Background:</b> Addiction to opioids causes several adverse effects, one of the most important of which is oral side effects. However, oral health has a noticeable impact on the quality of life. The purpose of the present study is to investigate the indicators of oral health and oral health-related quality of life (OHRQoL) among patients with opioid use disorder to help treatment planning. <b>Methods:</b> A total of 425 people suffering opioid use disorder were selected from addiction treatment centers in Sari. After recording demographic data, the OHRQoL questionnaire (OHIP[oral health impact profile]-14) was administered as an interview. Then nine questions related to xerostomia were asked and were followed by an oral examination to measure indices, including SBI (sulcus bleeding index), GI (gingival index), PI (plaque index), and DMFT (decayed, missed, and filled teeth), and an unstimulated salivary flow rate (USFR) sample was collected for weight measurement to determine patients' hyposalivation. Variables were described using mean, standard deviation, and frequency. Kolmogorov-Smirnov, independent <i>t</i>, and Pearson's correlation coefficient tests were used in this study. Multivariate linear regression was used to evaluate the factors related to the quality of life score of opioid users. Statistical analysis was performed by SPSS16 with a significance level of 0.05. <b>Results:</b> The correlation between age, ADD-OHIP, and USFR with xerostomia was statistically significant (<i>p</i> < 0.05). GI, SBI, and DMFT indices in patients with hyposalivation (determined by measuring USFR) were lower than those without hyposalivation (determined by measuring USFR) and the differences were not statistically significant (<i>p</i> > 0.05). The results of the linear regression model showed that gender, xerostomia, and DMFT are the main determinants of OHIP. <b>Conclusion:</b> Gender, xerostomia, and DMFT are the main determinants of OHIP. Oral health and compliance with oral hygiene in people with opioid use disorder is poor and affects their quality of life. Therefore, providing them proper access to oral health services is necessary.</p>","PeriodicalId":13947,"journal":{"name":"International Journal of Dentistry","volume":"2025 ","pages":"5339532"},"PeriodicalIF":2.2,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12496143/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145232515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Two Years of Revolutionizing Oral Health in Tanzania: Evaluation of a Multicomponent Government-Led Model.","authors":"Baraka J Nzobo, Sima Rugarabamu, James Tumaini Kengia, Mavere Tukai, Hamad Nyembea","doi":"10.1155/ijod/7004986","DOIUrl":"10.1155/ijod/7004986","url":null,"abstract":"<p><p><b>Background:</b> In 2022, the Tanzanian government launched a comprehensive multicomponent reform aimed at revolutionizing the national oral health care system. This initiative is part of a broader commitment to align with global health standards and address the significant oral health challenges faced by the population. Prior to the reforms, Tanzania's oral health infrastructure was marked by outdated practices and high prevalence rates of oral diseases, including dental caries and periodontal disease. <b>Methods:</b> We employed a qualitative case study design, guided by Walt and Gilson's Policy Triangle and Kingdon's Multiple Streams Framework, to analyze the planning, implementation, and early outcomes of the reform. Data were sourced from national surveys, District Health Information System-2 (DHIS2), official policy documents, procurement and training reports, and triangulated across multiple systems. Analysis focused on reform milestones, service utilization trends, and contextual drivers. <b>Results:</b> The reform resulted in significant system-wide changes, including the procurement of 340 modern dental chairs, installation of 306 digital radiography units, and national phase-out of dental amalgam. An Oral Health Scorecard was deployed to monitor restorative treatment trends, contributing to a reduction in the extraction-to-restoration ratio from 2.8:1 in 2022 to 1.3:1 in 2025. The introduction of a pregnancy-focused oral health program and expanded training for dental therapists further enhanced service equity and quality. Reform implementation was enabled by strong political will, professional consolidation, and integration within existing national health strategies. <b>Conclusion:</b> Tanzania's rapid and multicomponent oral health reform represents a pioneering model for low- and middle-income countries. By aligning with the WHO Global Oral Health Action Plan and embedding oral health into primary and maternal healthcare, the country has laid the foundation for sustainable and equitable dental care. Continued investments in digital innovation, public-private partnerships, and health education will be critical for scaling impact.</p>","PeriodicalId":13947,"journal":{"name":"International Journal of Dentistry","volume":"2025 ","pages":"7004986"},"PeriodicalIF":2.2,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12483748/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145206347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quantitative Analysis of Closed Porosity in Direct Resin Composites: A Micro-CT Study on the Influence of Material Type.","authors":"Enas Mangoush, Lippo Lassila, Pekka K Vallittu, Sufyan Garoushi","doi":"10.1155/ijod/3292581","DOIUrl":"10.1155/ijod/3292581","url":null,"abstract":"<p><p><b>Aim:</b> This study aimed to evaluate and compare the average pores size and closed porosity levels in different types of resin composites using micro-computed tomography (micro-CT). <b>Materials and methods:</b> Ninety specimens (2.5 mm × 4 mm × 4 mm) were prepared using 15 different materials divided into 15 groups (<i>n</i> = 6/group). Groups were either conventional packable (Filtek Universal Restorative and G-aenial A'chord), conventional flowable (CLEARFIL MAJESTY ES Flow, G-aenial Flo X, and G-aenial Universal Injectable), bulk fill flowable (SDR flow+ and Filtek Bulk Fill Flowable Restorative), dual-cure (Gradia Core and CLEARFIL DC Core Plus), or fiber-reinforced composites (Nova Pro Flow, Fibrafill DENTIN, everX Flow with either Dentin or Bulk shade, and everX Posterior), in addition to one glass hybrid material (EQUIA Forte HT Fil). All specimens were scanned using a micro-CT machine (Bruker Skyscan 1272), and analyzed for the average size, volume percentage, and distribution of closed porosities. Data was analyzed using Shapiro-Wilk for normality, followed by two-way ANOVA with Tukey's HSD for group comparisons. Pearson correlation assessed the relation between the average size and the percentage of closed pores. <b>Results:</b> The results revealed significant differences in closed porosity levels among the tested groups. Filtek Universal Restorative exhibited the lowest porosity (0.049%), while Fibrafill DENTIN had the highest (4.78%) and the largest average pore size (0.996 mm³). In contrast, A'chord had the smallest average closed pore size (0.017 mm³) (<i>p</i>  < 0.05). When the composites were categorized into flowable and packable variants, a significant difference (<i>p</i>  < 0.05) was observed in the average percentage of closed pores, with flowable composites showing a lower porosity (0.31%) compared to packable composites (1.25%). <b>Conclusion:</b> The findings highlight the influence of material type on porosity formation, with larger pore sizes correlating with higher closed porosity percentages.</p>","PeriodicalId":13947,"journal":{"name":"International Journal of Dentistry","volume":"2025 ","pages":"3292581"},"PeriodicalIF":2.2,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12479152/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145199224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of Oral Hygiene Practices and Associated Risk Factors Among Dental Patients in Kabul, Afghanistan: A Cross-Sectional Study.","authors":"Ali Maisam Eshraqi, Abdurrahman Anwari, Sayed Esa Sadaat, Mohammad Haris Taheri, Arash Nemat, Elaha Sumaya Ghafari, Ahmad Siyar Noormal","doi":"10.1155/ijod/7840384","DOIUrl":"10.1155/ijod/7840384","url":null,"abstract":"<p><p><b>Background:</b> Oral health is a critical aspect of overall well-being, with significant implications for physical health and quality of life. Despite the well-documented understanding of oral hygiene practices, there is limited research on oral health behaviors in Afghanistan, a country with unique sociocultural and economic challenges. <b>Objectives:</b> This study aims to assess oral hygiene practices and identify associated risk factors among individuals in Kabul, Afghanistan, to provide insights into oral health behaviors in low-resource settings. <b>Methods:</b> Institutional based cross-sectional study was conducted from March 2021 to March 2022, involving 1948 participants from dental hospitals in Kabul. Descriptive and inferential statistical analyses, including logistic regression, were employed to explore associations between variables and oral hygiene status. <b>Results:</b> The study revealed that 59.7% of participants had poor oral hygiene. Key predictors of good oral hygiene included higher education levels, better wealth status, and younger age. Surprisingly, higher snack consumption was associated (AOR: 1.66, CI: 1.24-2.21) with better oral hygiene, contrary to existing literature. Continuous medication use also correlated with better oral hygiene practices with an AOR of 2.14. <b>Conclusions:</b> The findings highlight the complex interplay of demographic, educational, and behavioral factors in determining oral hygiene practices. Targeted interventions including health information provision regarding oral health for patients specifically for poor and uneducated individuals is recommended to enhance oral health outcomes in low-resource settings like Afghanistan.</p>","PeriodicalId":13947,"journal":{"name":"International Journal of Dentistry","volume":"2025 ","pages":"7840384"},"PeriodicalIF":2.2,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12463539/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145185990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Inside the Mouths of Caregivers: Evaluating Oral Health Status of Iranian Female Dental Nurses-A Pilot Study Findings.","authors":"Ehsan Babaei Zarch, Seyed Mohammad Heidarpour Zarchi, Fatemeh Owlia","doi":"10.1155/ijod/7818864","DOIUrl":"10.1155/ijod/7818864","url":null,"abstract":"<p><p><b>Background:</b> Poor oral health is also a notable cause of pain and discomfort and is usually a pointer to general health. Dental nurses play a significant role in improving the oral health of the community. This study presents the assessment and evaluation of the oral health status of Iranian dental nurses based on the oral health questionnaire (OHQ) developed by the WHO. <b>Materials and Methods:</b> This descriptive cross-sectional survey studied 50 informally trained dental nurses. Subjects were recruited through a census sampling technique from two dental clinic centers affiliated with Shahid Sadoughi University of Medical Sciences, Yazd, Iran, between August and October 2023. Oral health status and oral health behavior were measured using the WHO OHQ for dental nurses. <b>Results:</b> The mean age of participants was 35.52 ± 7.86 years. All respondents reported brushing their teeth and 48 (96%) used toothpaste. Similarly, 95% of participants reported having a total of 20 or more teeth. Of the sample, 44% had visited the dentist in past 6 months. Singles had significantly better oral health behavior scores than married subjects and also showed fewer signs of oral and dental health problems. The mean scores of oral problems did not differ significantly by age, systemic diseases, work experience, workplace, or household family income. <b>Conclusion:</b> Generally, the majority of Iranian dental nurses in the study assessed their oral health status as good, while their scores concerning oral health behaviors were very poor. Emphasizing the importance of academic educational courses for dental nurses is crucial in promoting oral health behavior. This study demonstrated that merely having easy access to dental services is not a sufficient replacement for formally institutionalized training in dental nurses.</p>","PeriodicalId":13947,"journal":{"name":"International Journal of Dentistry","volume":"2025 ","pages":"7818864"},"PeriodicalIF":2.2,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12463506/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145186010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Degree of Conversion and Microshear Bond Strength of New Composite to Postcured Composite Resin Surface Treated With Ethyl Acetate.","authors":"Tayebeh Rostamzadeh, Seyedeh Maryam Tavangar, Fatemeh Golsorkhtabar","doi":"10.1155/ijod/3791468","DOIUrl":"10.1155/ijod/3791468","url":null,"abstract":"<p><p><b>Objectives:</b> This study aimed to investigate the impact of ethyl acetate (E) surface treatment on the degree of conversion (DC) of postcured composite, measured by the Fourier transform infrared spectroscopy (FTIR) method, and its microshear bond strength to the new composite. <b>Materials and Methods:</b> A total of 42 composite discs were prepared in a plexiglass mold with a thickness of 2 mm. Both sides of the discs were postcured in the Labolight LV-ӀӀӀ machine for 5 min. The composite discs were then divided into three groups, each containing 14 discs (<i>n</i> = 14), based on the surface treatment method used. It is worth noting that the mentioned division was employed randomly to ensure an unbiased study. The control group received sandblast and silane treatment. The second group was treated with E, while the third group underwent treatment with both E and silane (ESi). Cylindrical composite blocks were bonded to the prepared discs in a tygon tube. All groups underwent 5000 thermal cycles. The microshear bond strength was measured using a universal testing machine, and DC before and after treatment with E was determined through FTIR testing. Additionally, samples were examined under a stereomicroscope with a 40x magnification to investigate the failure mode. <b>Results:</b> The microshear bond strength of the control group was significantly higher than that of the other two groups; however, no significant difference was observed between the E and ESi groups (<i>p</i>-value = 0.18). In the control group, cohesive failure whereas in the other two groups, adhesive failure was the most frequent. The FTIR results showed that the application of E resulted in an 11% reduction in DC. <b>Conclusions:</b> The surface treatment of postcured composite, utilizing both chemical and mechanical methods, still results in better bond strength. Although the use of E led to a higher bonding potential of the postcured composite, it did not improve bond strength compared to the control group.</p>","PeriodicalId":13947,"journal":{"name":"International Journal of Dentistry","volume":"2025 ","pages":"3791468"},"PeriodicalIF":2.2,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12463523/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145185935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}