Journal of Clinical and Experimental Dentistry最新文献

{"title":"Perceptions on Facial Profile Aesthetics: A Survey of Young People and Orthodontists.","authors":"Beatriz Larena-Morencos, Ana Belén Macías-Gago, Iván Nieto-Sánchez, Víctor Gómez-Clemente","doi":"10.4317/jced.62939","DOIUrl":"10.4317/jced.62939","url":null,"abstract":"<p><strong>Background: </strong>The aim of this study is to understand the perceptions of young non-dental professionals and orthodontists on the aesthetics of facial profile.</p><p><strong>Material and methods: </strong>Perceptions were assessed using seven types of profile for both sexes, which represented different relations of the maxilla and mandible. In total, 50 young laypeople and 20 orthodontists were randomly selected to evaluate the aesthetics of each profile using numbers 1 to 10 to rank them in order of attractiveness. Aesthetics score was considered as a quantitative variable and comparison between groups was done with an ANOVA, and age and orthodontic treatment history of the evaluators from the young non-dental population was used as covariates to assess its possible effect.</p><p><strong>Results: </strong>The following female profiles were rated as most aesthetic: protruding jaw (<i>p</i><.001; R2:21.9%) and retruded jaw (<i>p</i><.001; R2:22.1%). The following male profiles were rated as most aesthetic: retruded maxilla (<i>p</i>=.001; R2:14.7%), bi-protruding maxilla and mandible (<i>p</i><.001; R2: 54.4%) and straight maxilla and mandible (<i>p</i><.05; R2:8.7%). Based on the sex of the evaluator, only significant differences were observed in these two male profiles. The straight profile showed significant differences (<i>p</i><.10) with a moderate effect (4.3%), and the bi-retruded profile (<i>p</i><.05) also had a moderate effect (8.5%); these were rated higher by men. Insufficient statistical evidence was found to admit that a history of orthodontic treatment influences aesthetic perception of male or female profiles. For all the variables, evaluators from the young population scored higher than orthodontists for both male and female profiles.</p><p><strong>Conclusions: </strong>The straight profile was considered more aesthetic for both sexes. Differences in aesthetic perception depending on sex and previous clinical history of orthodontic treatment were minimal. It can be concluded that the young lay population is less demanding in its evaluations than orthodontists. <b>Key words:</b>Orthodontics, facial profile, aesthetic, aesthetic perception.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"17 8","pages":"e951-e957"},"PeriodicalIF":0.0,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12424596/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145064813","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":"Clinical-Pathological profile of head and neck cancers other than squamous cell carcinoma: A retrospective 20-year follow-up study.","authors":"Paulo Goberlânio de Barros Silva, Mikaele Zizuino da Silva, Giulianna Aparecida Vieira Barreto, Ana Beatriz Silva Marques Araújo, Thinali Sousa Dantas, Cássia Emanuella Nobrega Malta, Fabrício Bitu Sousa, Marcelo Gurgel Carlos da Silva","doi":"10.4317/jced.62968","DOIUrl":"10.4317/jced.62968","url":null,"abstract":"<p><strong>Background: </strong>Squamous cell carcinoma (SCC) of the head and neck is the main histological type and the sixth most common cancer in the world. However, tumors other than squamous cell carcinoma can affect the oral cavity, such as salivary gland carcinomas, lymphomas and sarcomas.</p><p><strong>Material and methods: </strong>A quantitative, retrospective, observational and cross-sectional study, in which 395 medical records of patients diagnosed/treated with non-SCC head and neck tumors from 2000 to 2020 at the Haroldo Juaçaba Hospital/Ceará Cancer Institute (HHJ/ICC) were analyzed. The data was compared using Pearson's chi-square test or Fisher's exact test, Kaplan-Meier overall survival curves were constructed and the Mantel-Cox log-rank test was used.</p><p><strong>Results: </strong>Salivary gland tumors (1st = Adenoid Cystic Carcinoma), followed by sarcomas (1st = Kaposi's Sarcoma) and lymphoproliferative tumors (1st = Diffuse Large B-Cell Lymphoma). The majority of the sample were women, with a mean age of 56 and a low level of education. Median overall survival was (95%CI = 57.29-101.71) months, with no difference between the lesion groups (<i>p</i>=0.727). Salivary gland tumors and sarcomas affected significantly younger age groups (<i>p</i>=0.011). Most of the sample was N0 (<i>p</i>=0.006) and multimodal therapy was the preferred choice, especially for salivary gland tumors, sarcomas and melanomas (<i>p</i><0.001). Schooling (<i>p</i>=0.007) was inversely associated with overall survival and the independent predictor of death was the presence of lymph nodes (<i>p</i>=0.039).</p><p><strong>Conclusions: </strong>The frequency of non-SCC head and neck tumors is very low. There is no difference between men and women, age is a determining factor in differentiating tumors and lymph node metastasis is the main predictor of survival. In addition, schooling is an important risk factor for mortality in these patients. <b>Key words:</b>Head and Neck Neoplasms, Squamous Cell Carcinoma, Salivary Gland Neoplasms, Survival.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"17 8","pages":"e903-e911"},"PeriodicalIF":0.0,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12424592/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145064736","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":"Cephalometric features associated with the mentolabial angle and lower lip eversion in young adults: A cross-sectional study.","authors":"Luis Ernesto Arriola-Guillén, André Alexis Díaz-Quevedo, Yalil Augusto Rodríguez-Cárdenas, Gustavo Armando Ruíz-Mora, Heraldo Luis Días-Da Silveira","doi":"10.4317/jced.63016","DOIUrl":"10.4317/jced.63016","url":null,"abstract":"<p><strong>Background: </strong>Understanding the cephalometric factors that affect the mentolabial angle and lower lip eversion is essential for orthodontics. The objective was to evaluate the influence of various skeletal and dentoalveolar cephalometric features associated with the mentolabial angle and lower lip eversion in young adults.</p><p><strong>Material and methods: </strong>This cross-sectional study assessed lateral head radiographs of individuals between the ages of 15 and 40 years. Two trained and calibrated evaluators performed angular and linear cephalometric measurements utilizing BlueSky Plan 4 software. The variables evaluated in this study included the presence of the mentolabial angle, labial eversion, overjet, and the position and inclination of the lower central incisors (measured by I-NB, I.NB, IMPA) as well as the upper central incisors (measured by I-NA, I.NA, UIPP). Additionally, we assessed the sagittal positions of the maxilla and mandible using SNA and SNB measurements, along with the sagittal and vertical skeletal relationships determined by the ANB and FMA angles. We applied multiple linear and binary logistic regression tests for statistical analysis (<i>p</i><0.05).</p><p><strong>Results: </strong>138 radiographs were evaluated (73 females and 65 males). The mentolabial angle is, on average, 7.68° greater in women than men (<i>p</i>=0.001). An increase in the IMPA and overjet decreases 0.40° (<i>p</i>=0.012) and 2.02° (<i>p</i>=0.003) in the mentolabial angle, respectively. Likewise, females are 82% less likely to experience lip eversion than males (exp B = 0.18, 0.05 to 0.60 CI 95%; <i>p</i>=0.006). Furthermore, for each degree increase in lower incisor inclination (I. NB) or overjet, the risk of developing lip eversion increases by 1.17 times (1.02 - 1.34 CI to 95%, <i>p</i>=0.023) and 1.85 times (1.23 - 2.78 CI to 95%, <i>p</i>=0.003), respectively.</p><p><strong>Conclusions: </strong>The inclination of the lower incisors and the overjet primarily influences the mento-labial angle. Women tend to have a greater mento labial angle, meaning it is more retrusive, compared to men. Additionally, the likelihood of lip eversion is higher in males. For each degree of increased lower incisor inclination or overjet, the risk of developing lip eversion also rises. <b>Key words:</b>Cephalometry, Chin, Dental Esthetics, Lip.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"17 8","pages":"e974-e979"},"PeriodicalIF":0.0,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12424598/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145064741","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":"Esthetic preference of upper central incisor inclination in a smile profile view. A cross-sectional study.","authors":"Silvia Fuentes-Valera, Aron Aliaga Castillo, Fabián Reta-Martínez, Nicolás Arboleda-Ariza, Yalil Augusto Rodríguez-Cárdenas, Gustavo Armando Ruíz-Mora, Luis Ernesto Arriola-Guillén","doi":"10.4317/jced.62924","DOIUrl":"10.4317/jced.62924","url":null,"abstract":"<p><strong>Background: </strong>The objective of this study was to determine the esthetic preference of the upper central incisor (UCI) inclination from a smiling profile view in laypeople of Latin American origin.</p><p><strong>Material and methods: </strong>This descriptive and cross-sectional study used a smiling profile photograph that was digitally modified to generate 7 types of UCI inclinations (+15°, +10°, +5°,0°, -10°, and -15°). Thus, 160 evaluators distributed in 4 groups (40 Peruvians, 39 Mexicans, 40 Brazilians and 41 Colombians) assessed the images using a visual analog scale. Kruskal-Wallis and Dunn Bonferroni tests were applied for multiple comparisons of ratings between groups (<i>p</i><0.05).</p><p><strong>Results: </strong>The general sample of evaluators of the four nationalities considered -5° the most attractive slant and 0° the second most attractive slant, although a significant difference was found in the intensity of preference (<i>p</i><0.001). Further, Peruvians rated the intensity of preference being -5° (Visual analogic scale (VAS) = 80 points) and 0° (VAS = 77 points) the most attractive inclinations, Mexicans rated 0° (VAS = 90 points) and -5°, -10° and 5° (VAS = 80 points) as the most attractive, Brazilians rated the most attractive inclinations at -5° and 0° (both with VAS = 80 points) and Colombians rated the most attractive inclinations at -5°, 0°, 5° and 10° (VAS = 60 points).</p><p><strong>Conclusions: </strong>Slightly retroclined (-5°) and neutral (0°) inclinations of central incisor were the most preferred by the Latin American individuals. This result should be considered by orthodontists for treatment planning. <b>Key words:</b>Upper central incisors, inclination, esthetic preference, perception.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"17 8","pages":"e897-e902"},"PeriodicalIF":0.0,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12424597/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145064767","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":"Nickel Bioaccumulation in Oral Biofilm, Gingival Tissue, and Saliva During Fixed Orthodontic Treatment: A 12-Month Prospective Cohort Study on Predictors and Salivary pH Correlation.","authors":"Lizeth Galviz-García, Sandro Romero-Romero, Alejandra Herrera-Herrera, Jairo Mercado-Camargo, Antonio Díaz-Caballero, Jaime Plazas-Román, Carlos M Ardila","doi":"10.4317/jced.62923","DOIUrl":"10.4317/jced.62923","url":null,"abstract":"<p><strong>Background: </strong>Nickel-based alloys in fixed orthodontic appliances are susceptible to electrochemical corrosion in the oral environment, releasing ions with cytotoxic and allergenic potential. While previous studies have documented initial nickel release patterns, the longitudinal dynamics of its accumulation across oral biospaces (saliva, biofilm, gingival tissue) and interactions with salivary pH remain poorly characterized. This study investigates nickel accumulation in saliva, oral biofilm, and gingival tissue over 12 months of orthodontic treatment and its association with salivary pH.</p><p><strong>Material and methods: </strong>This 12-month prospective cohort study enrolled 120 participants undergoing fixed orthodontic treatment. Nickel concentrations were quantified via graphite furnace atomic absorption spectrophotometry in three biospaces at baseline (T0), 6 months (T1), and 9-12 months (T2). Salivary pH was measured concurrently. Statistical analyses included non-parametric longitudinal comparisons, inter-biospace contrasts, Spearman correlations, and multivariate regression modeling to identify predictors of nickel accumulation.</p><p><strong>Results: </strong>Nickel exhibited distinct spatiotemporal patterns: progressive accumulation in biofilm (0.0008→21.5833 µg/L, <i>p</i><0.001) versus biphasic kinetics in gingiva and saliva (peaking at T1 then declining). By T2, biofilm concentrations were 1000× higher than other biospaces (<i>p</i><0.001). Treatment duration was the strongest predictor across all compartments (β=0.56-0.67, <i>p</i><0.001), with biofilm accumulation additionally modulated by salivary pH (β=0.22, <i>p</i>=0.027) and age (β=-0.19, <i>p</i>=0.041). A time-dependent correlation emerged between salivary pH and biofilm nickel (T0: r=0.17, <i>p</i>=0.112; T2: r=0.41, <i>p</i>=0.008), suggesting pH-microbiome interactions.</p><p><strong>Conclusions: </strong>Oral biofilm serves as the dominant long-term nickel reservoir during orthodontic treatment, with accumulation dynamics influenced by treatment duration, pH, and age. The pH-dependent biofilm-metal interaction highlights its potential as a biomarker for exposure monitoring and a target for preventive strategies. These findings support the development of pH-modulating oral care protocols and corrosion-resistant orthodontic materials to mitigate nickel exposure risks. <b>Key words:</b>Nickel, saliva, Spectrophotometry, Atomic, Orthodontic Appliances, Hydrogen-Ion Concentration.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"17 8","pages":"e920-e928"},"PeriodicalIF":0.0,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12424594/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145064840","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":"Debris Removal from Mandibular Molars Using Different Irrigation Volumes and Ultrasonic Tips: Micro-CT Study.","authors":"Alinne Patiery Pacífico Oliveira Feitosa, Arthur Costa Lemos, Suyane Maria Luna-Cruz, Ana Grasiela Limoeiro, Murilo Priori Alcalde, Rodrigo Ricci Vivan, Marco Antônio Hungaro Duarte, Bruno Carvalho Vasconcelos","doi":"10.4317/jced.62892","DOIUrl":"10.4317/jced.62892","url":null,"abstract":"<p><strong>Background: </strong>This study compared the impact of varying irrigating solution volumes and two ultrasonic tips on removing hard tissue debris (HTD) during passive ultrasonic irrigation (PUI) in mesial roots of mandibular molars.</p><p><strong>Material and methods: </strong>Sixty roots were instrumented using WaveOne Gold 35/.06 divided into 5 groups (<i>n</i>=12): Irrisonic 6 mL (IR6), Irrisonic 30 mL (IR30), Irrisonic Power 6 mL (IRP6), Irrisonic Power 30 mL (IRP30), and a control group with conventional irrigation. Microcomputed Tomography was used to measure HTD removal. Statistical analysis used ANOVA, Tukey, and t-Student tests (α = 5%).</p><p><strong>Results: </strong>Significant differences were observed in HTD removal between the IR30, IRP6, IRP30 groups, and the control group (<i>P</i> < 0.0001), while no statistical significance was found between IR6 and the control group (<i>P</i> > 0.05). A statistical difference was observed between IR30 and IR6 (<i>P</i> < 0.05). IR30 achieved the highest debris removal rate (87.63%), while IR6 showed the lowest (80.16%). Significant differences were observed between experimental and control groups (<i>P</i> < 0.05), except for IR6 (<i>P</i> > 0.05).</p><p><strong>Conclusions: </strong>A larger volume of irrigating solution (30 mL compared to 6 mL) during the PUI protocol resulted in greater removal of HTD. Additionally, the Irrisonic Power tip did not significantly enhance HTD removal. <b>Key words:</b>Endodontics, Passive Ultrasonic Irrigation, Root Canal Irrigant, Ultrasonic tip, X-ray microtomography.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"17 8","pages":"e891-e896"},"PeriodicalIF":0.0,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12424600/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145064739","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":"Influences of different fiber-reinforced biobases on the fracture strength and failure mode of lithium disilicate overlay restorations (a comparative <i>in vitro</i> study).","authors":"Maareb Abdulraheem Nabat, Alaa Jawad Kadhim","doi":"10.4317/jced.62746","DOIUrl":"10.4317/jced.62746","url":null,"abstract":"<p><strong>Background: </strong>Ceramic restorations are commonly employed in restorative dentistry. However, their inherent brittleness poses a challenge, particularly in extensive restorations. Limited data exist regarding the fiber reinforcement's role in the efficiency of lithium disilicate overlay restorations. This research sought to evaluate the fracture strength and failure mode of lithium disilicate overlay restorations using various biobase techniques.</p><p><strong>Material and methods: </strong>Fifty sound maxillary first premolars of equivalent dimensions received a full-bevel overlay preparation design with a 3-mm occlusal reduction. Samples were allocated randomly to five experimental groups (n = 10): Group A: (delayed dentin sealing); Group B: (immediate dentin sealing with Optibond FL); Group C: immediate dentin sealing was coated with a 1-mm flowable composite layer (Clearfil AP-X Flow); Group D: following immediate dentin sealing, a 1-mm short fiber reinforced composite layer (EverX Flow) was applied; and Group E: immediate dentin sealing followed by a 1-mm flowable composite layer reinforced with polyethylene Ribbond fibers. Following tooth preparation, digital impressions were made via a Medit i700 intraoral scanner, and overlays were digitally designed via Sirona inLab CAD software and milled via a 4-axis milling machine. The overlays were luted with a preheated composite. The fracture load was assessed (in Newtons) utilizing a universal testing unit. A one-way analysis of variance was employed to perform statistical analysis.</p><p><strong>Results: </strong>The one-way ANOVA test indicated no significant difference between the groups (<i>P</i>> 0.05). Nevertheless, the fiber-reinforced biobases in Groups D and E exhibited less catastrophic failure modes than those in Groups A, B, and C.</p><p><strong>Conclusions: </strong>All of the tested overlay restorations displayed sufficient strength to endure the normal masticatory force. The incorporation of fiber-reinforced biobases positively influenced the failure mode. <b>Key words:</b>Biobase, Ever X flow, Full bevel, Overlay, Ribbond fiber.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"17 8","pages":"e884-e890"},"PeriodicalIF":0.0,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12424585/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145064740","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":"Comparison of clinical performance of glass ionomer cement vs. composite resin in restorations of non-carious cervical lesions: A systematic review and meta-analysis.","authors":"Heber Isac Arbildo-Vega, Fredy Hugo Cruzado-Oliva, Franz Tito Coronel-Zubiate, Sara Antonieta Luján-Valencia, Joan Manuel Meza-Málaga, Rubén Aguirre-Ipenza, Adriana Echevarria-Goche, Eduardo Luján-Urviola, Tania Belú Castillo-Cornock, Katherine Serquen-Olano","doi":"10.4317/jced.62997","DOIUrl":"10.4317/jced.62997","url":null,"abstract":"<p><strong>Background: </strong>To compare the clinical performance of glass ionomer cement (GIC) vs. composite resin (CR) in restorations of non-carious cervical lesions (NCCL).</p><p><strong>Material and methods: </strong>A bibliographic search was conducted until October 2023, in the biomedical databases: PubMed/Medline, Cochrane Library, SciELO, Scopus, Web of Science and Google Scholar. Randomized clinical trials reporting the effect of GIC compared to CR in the restoration of NCCLs were included, without restrictions on publication date or language. The RoB 2.0 tool was used to assess the risk of bias of the included studies and the GRADEPro GDT tool was used to assess the quality of evidence and the strength of recommendations.</p><p><strong>Results: </strong>The search yielded a total of 296 articles. After excluding those that did not meet the selection criteria, 18 articles remained for the quantitative synthesis. The analysis found no statistically significant differences between CR and GIC in the restoration of NCCLs.</p><p><strong>Conclusions: </strong>The literature reviewed suggests that there are no differences in clinical performance over time when restoring NCCLs with CRs or GICs. <b>Key words:</b>Non-carious cervical lesion, composite resin, glass ionomer cement, review, meta-analysis.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"17 8","pages":"e995-e1005"},"PeriodicalIF":0.0,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12424605/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145064682","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":"Evaluation of Microleakage and Micromorphological Analysis of Different Self-Adhesive Restorative Systems in Class V Cavities: Laboratory Study.","authors":"Mohamed E Hamouda, Youniss S Harp, Abeer E Elembaby","doi":"10.4317/jced.62843","DOIUrl":"10.4317/jced.62843","url":null,"abstract":"<p><strong>Background: </strong>Microleakage is a common problem that affects the longevity of restorative materials in Class V cavities. It is influenced by factors such as the type of restorative materials, composition of the cavity margins and aging. This study aimed to evaluate and compare microleakage and micromorphological analysis of restoration-dentin interface for Class V cavities restored with resin modified glass ionomer cement, self-adhesive flowable composite and self-adhesive composite hybrid before and after thermocycling for 10000 cycles.</p><p><strong>Material and methods: </strong>One hundred two sound premolars received standardized Class V cavities on their buccal surfaces with the gingival margin placed 1mm above the cementum-enamel junction. The prepared premolars were randomly divided into three groups according to the self-adhesive restorative systems used (n=34). Each group was further subdivided into two subgroups according to aging (n=17); the first one was immediately evaluated after 24 hours of restoration placement, while the second was evaluated after thermocycling. Restored premolars were evaluated using dye penetration microleakage test under a stereomicroscope and micromorphological analysis of restorations/dentin interface. Microleakage scores were statistically analyzed using Kruskal-Wallis test, Mann-Whitney U test and Wilcoxon Signed Rank test.</p><p><strong>Results: </strong>There was a statistically significant difference regarding microleakage between the used self-adhesive restorative systems (<i>p</i><0.05). Self-adhesive composite hybrid had the highest microleakage scores followed by self-adhesive flowable composite while resin modified glass ionomer cement had the lowest microleakage scores. Also, there was a significant increase in the microleakage scores for the used restorative systems after thermocycling (<i>p</i><0.05).</p><p><strong>Conclusions: </strong>Resin modified glass ionomer cement remains the material of choice for Class V cavities in the term of microleakage compared to self-adhesive flowable composite and self-adhesive composite hybrid. The sealing stability of the used self-adhesive restorative systems still questionable over time. <b>Key words:</b>Class V cavities, microleakage, resin modified glass ionomer cement, self-adhesive composite, thermocycling.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"17 7","pages":"e805-e815"},"PeriodicalIF":0.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12357500/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144873405","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":"Surface microhardness and depth of cure in bulk fill resin composites with and without preheating: An <i>in vitro</i> study.","authors":"Brisseth Pérez-Pachas, Fiorella Shibuya-Panduro, Leonor Castro-Ramirez, Luis Cervantes-Ganoza, Marysela Ladera-Castañeda, Jose Huamani-Echaccaya, César Cayo-Rojas","doi":"10.4317/jced.62844","DOIUrl":"10.4317/jced.62844","url":null,"abstract":"<p><strong>Background: </strong>Preheating bulk-fill resins reduces their viscosity, facilitates their adaptation, and improves polymerization by accelerating the activity of photoinitiators. This would allow for more efficient application and deeper curing. The study's objective was to compare the surface microhardness and depth of cure of three bulk-fill composite resins with and without preheating.</p><p><strong>Material and methods: </strong>Sixty samples were prepared from three different materials, Aura Bulk Fill, Filtek One Bulk Fill, and Opus Bulk Fill, in standardized molds. A Vickers electronic hardness tester was used to measure the surface microhardness. The depth of cure was calculated using the upper-to-lower microhardness ratio for each sample. Robust Student's T was used to compare two independent measures, and Welch's robust ANOVA was used to compare more than two independent measures with Games Howell's post hoc. Significance was set at <i>p</i><0.05.</p><p><strong>Results: </strong>It was observed that the preheated Aura Bulk Fill and Filtek One Bulk Fill resins had significantly higher surface microhardness than the same resins without preheating (<i>p</i><0.001 and <i>p</i>=0.038, respectively). On the other hand, the non-preheated Opus Bulk Fill resin had significantly higher surface microhardness than the same resin preheated (<i>p</i> = 0.046). In addition, it was evident that the Filtek One Bulk Fill resin had a greater depth of cure than the Aura Bulk Fill resin (<i>p</i> = 0.011). This, in turn, had a greater depth of cure than Opus Bulk Fill resin (<i>p</i> = 0.003). Finally, with and without preheating, no significant differences existed in the depth of cure of the Bulk Fill resins evaluated (<i>p</i>>0.05).</p><p><strong>Conclusions: </strong>Preheating significantly increased the surface microhardness in Aura Bulk Fill and Filtek One Bulk Fill resin, while it caused the opposite effect in Opus Bulk Fill resin. In addition, preheating did not increase the depth of cure of each Bulk Fill resin evaluated. Finally, with and without preheating, Filtek One Bulk Fill resin presented higher surface microhardness and depth of cure than Aura Bulk Fill and Opus Bulk Fill resins. <b>Key words:</b>Preheating, bulk-fill composite resin, depth of cure, microhardness.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"17 7","pages":"e825-e833"},"PeriodicalIF":0.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12357508/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144873337","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}