Journal of Advanced Oral Research最新文献

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The Effects of Selected Mouthwashes on the Surface Microhardness of a Single-shade Universal Resin Composite: In Vitro Study 选定漱口水对单色通用树脂复合材料表面显微硬度的影响:体外研究
IF 0.7
Journal of Advanced Oral Research Pub Date : 2022-10-18 DOI: 10.1177/23202068221129020
L. Al-Saud, Lina M. Alolyet, Dhayah S. Alenezi
{"title":"The Effects of Selected Mouthwashes on the Surface Microhardness of a Single-shade Universal Resin Composite: In Vitro Study","authors":"L. Al-Saud, Lina M. Alolyet, Dhayah S. Alenezi","doi":"10.1177/23202068221129020","DOIUrl":"https://doi.org/10.1177/23202068221129020","url":null,"abstract":"Aim: To investigate the effects of selected alcohol-free mouthwashes with different formulations (zinc-hydroxyapatite, hydrogen peroxide, and sodium fluoride) on the surface microhardness of a single-shade universal resin composite. Materials and Methods: Forty disc-shaped specimens (8 × 2 mm) from the universal resin composite (Omnichroma®), and a nano-hybrid composite (Tetric® N-Ceram) were prepared. After polymerization, baseline surface microhardness values were recorded using Vickers microhardness tester. The samples from each material were randomly assigned to 4 groups (n = 10) and immersed in 20 ml of the mouthwashes: Biorepair®, Listerine®, Colgate® Optic White, and distilled water (control). The samples were kept in the immersion solutions for 24 hours, and post-immersion microhardness values were recorded. Data were analyzed with one-way ANOVA and paired sample t-tests at p < .05. Results: Significant reduction in microhardness was observed in all resin composite groups after immersion in the mouthwashes compared to baseline values (p < .0001). The highest microhardness reduction in Omnichroma® group was observed after immersion in Colgate® Optic White; and Tetric® N-Ceram group after immersion in Listerine® mouthwash. For both materials, the least reduction in microhardness was observed after immersion in Biorepair®. Microhardness values for Omnichroma were significantly higher than Tetric® N-Ceram (p < .0001). However, Omnichroma exhibited a significantly greater reduction in microhardness after immersion in the tested mouthwashes. Conclusion: In vitro simulated use of the investigated mouthwashes negatively affected the surface microhardness of both tested resin composites. The observed effects were both mouthwash and material dependent.","PeriodicalId":43017,"journal":{"name":"Journal of Advanced Oral Research","volume":"115 1","pages":"234 - 244"},"PeriodicalIF":0.7,"publicationDate":"2022-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79119183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
The Effect of Sintering Procedures on Fit and Color in Zirconia Crowns 烧结工艺对氧化锆冠贴合度和颜色的影响
IF 0.7
Journal of Advanced Oral Research Pub Date : 2022-10-18 DOI: 10.1177/23202068221129025
Haydar Albayrak, R. Eraslan, Ozan Temizkanli, Bahar Sayin Sahin, Mustafa Ayata, Taygun Sezer
{"title":"The Effect of Sintering Procedures on Fit and Color in Zirconia Crowns","authors":"Haydar Albayrak, R. Eraslan, Ozan Temizkanli, Bahar Sayin Sahin, Mustafa Ayata, Taygun Sezer","doi":"10.1177/23202068221129025","DOIUrl":"https://doi.org/10.1177/23202068221129025","url":null,"abstract":"Purpose: The aim of this study was to examine the effects of various sintering procedures on the color parameters, marginal, and internal fit of zirconia crowns. Materials and Methods: Overall, 60 zirconia crowns were produced using 3 distinct zirconia blocks (Wieland Zenostar, Zirkonzahn Ice Translucent, and Zirkonzahn Prettau). For the sintering procedure of the crowns, six groups were created as follows: Wieland-Standard, Wieland-Speed, Ice-Standard, Ice-Speed, Prettau-Slow, and Prettau-Standard programs. The crowns were assigned into groups (n = 10 in each group). The color parameters, marginal fit, and internal fit of the crowns were evaluated. The normality of data distribution was evaluated with the Kolmogrov–Smirnov test. Two independent samples t-test and Mann–Whitney U test were used to compare the sintering groups. Results: Acceleration of sintering caused a significant change in the color parameters of the Wieland and Ice groups but not in the Prettau group. In the Wieland group, marginal (p = .047) and internal (p = .004) gap values of speed sintering were found to be significantly lower than those in standard sintering. In the Ice group, the marginal gap values of speed sintering were found to be significantly lower than those in standard sintering (p = .019). In the Prettau group, the marginal gap values of standard sintering were found to be significantly higher (p = .035) than those in slow sintering. Conclusions: It was concluded that the effects of sintering procedures on color parameters, and internal and marginal fit of zirconia crowns were clinically insignificant. Speed sintering can be recommended for zirconia restorations.","PeriodicalId":43017,"journal":{"name":"Journal of Advanced Oral Research","volume":"1 1","pages":"245 - 251"},"PeriodicalIF":0.7,"publicationDate":"2022-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75948002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
The Effect of Additional Finishing and Polishing Sequences on Hardness and Roughness of Two Different Dental Composites: An In Vitro Study 额外抛光和抛光顺序对两种牙体复合材料硬度和粗糙度影响的体外研究
IF 0.7
Journal of Advanced Oral Research Pub Date : 2022-09-28 DOI: 10.1177/23202068221121518
Kıvanç Dülger
{"title":"The Effect of Additional Finishing and Polishing Sequences on Hardness and Roughness of Two Different Dental Composites: An In Vitro Study","authors":"Kıvanç Dülger","doi":"10.1177/23202068221121518","DOIUrl":"https://doi.org/10.1177/23202068221121518","url":null,"abstract":"Aim: The aim of this study was to evaluate the effect of additional finishing and polishing sequences on a new structural colored (Omnichroma) and a conventional dental composite (Estelite Sigma Quick). Materials and Method: Forty disk-shaped dental composite specimens were prepared from each dental composite and assigned to four groups in terms of additional finishing polishing sequences. Group 1: Mylar strip (control). Group 2: Abrasive disks. Group 3: After abrasive disks, application of a felt brush with abrasive paste. Group 4: After abrasive disks, application of a felt brush with abrasive paste. Then, a single-bottle adhesive was applied as a surface sealer. Hardness and surface roughness were measured using the Vickers hardness test and a profilometer, respectively. SEM images of one of each group were captured at 500x, 1500x, and 3500x magnifications. Two-way analysis of variance, Tukey HSD, and Shapiro–Wilk tests were used for the statistical analysis. Results: Mean hardness values differ in terms of finishing-polishing sequences (P < .001), dental composites (P < .001), and interaction of finishing-polishing sequences-dental composites (P < .001). Mean roughness values differ in terms of finishing-polishing (P = .002). The main effect of composites on roughness values was not found statistically significant (P = .990). Also, there is no difference between the mean roughness values in terms of the interactions of finishing-polishing and composites (P = .967). Conclusion: Finishing-polishing with abrasive disks and abrasive paste are important steps for these dental composites. However, the application of a single-bottle adhesive as a surface sealant on these composites decreases the hardness of the materials.","PeriodicalId":43017,"journal":{"name":"Journal of Advanced Oral Research","volume":"25 1","pages":"216 - 224"},"PeriodicalIF":0.7,"publicationDate":"2022-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79995184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of Different Adhesive Strategies on the Microshear Bond Strength of Calcium-Silicate-Based Materials 不同粘结策略对硅酸钙基材料微剪切粘结强度的影响
IF 0.7
Journal of Advanced Oral Research Pub Date : 2022-09-01 DOI: 10.1177/23202068221118979
A. Gürcan, Soner Şişmanoğlu, Görkem Sengez
{"title":"Effect of Different Adhesive Strategies on the Microshear Bond Strength of Calcium-Silicate-Based Materials","authors":"A. Gürcan, Soner Şişmanoğlu, Görkem Sengez","doi":"10.1177/23202068221118979","DOIUrl":"https://doi.org/10.1177/23202068221118979","url":null,"abstract":"Aim: To evaluate the microshear bond strength (µSBS) of mineral trioxide aggregate and Biodentine to various resin-based materials using different adhesive strategies. Materials and Methods: Three resin-based materials—a self-adhering resin composite with or without acid etching (Vertise flow; Kerr, Orange, CA, USA), a conventional flowable composite with a total-etch adhesive (Filtek Ultimate Flowable; 3M ESPE, St. Paul, MN, USA), and a flowable resin-modified glass ionomer cement (RMGIC) without any surface modification (Ionoseal; VOCO GmbH, Cuxhaven, Germany)—and two calcium-silicate-based materials—Biodentine and BIOfactor mineral trioxide aggregate (MTA)—were tested. A total of 100 cylindrical acrylic molds were prepared. Biodentine and BIOfactor MTA were prepared and placed into the central holes on the molds. Specimens were divided into two main groups according to materials and into five subgroups (n = 10). µSBS were evaluated using a µSBS testing device. The failure modes were examined under a stereomicroscope with magnification. They were categorized as adhesive, cohesive, or mixed. Data were analyzed using two-way analysis of variance (ANOVA) and Tukey test. The significance level was taken as α = 0.05. Results: It was observed that both calcium-silicate-based material type and resin-based material type influenced the µSBS significantly according to two-way ANOVA. Biodentine exhibited higher bond strength values than MTA. However, no statistically significant interaction was demonstrated between these factors (P = .396). The µSBS values of intermediate materials to Biodentine and MTA were listed from the lowest to the highest as follows: RMGIC < Acid Etch + RMGIC < SARC (self-adhering resin composite) < FC (flowable composite) < Acid Etch + SARC. Conclusion: Self-adhering composites can be used on calcium-silicate-based materials in vital pulp treatments because of their mechanical properties. Acid-etching ensures high µSBS values. Although the µSBS of Biodentine were higher than MTA according to this study’s results, there was no statistically significant difference in µSBS of FC and acid-etched SARC to MTA.","PeriodicalId":43017,"journal":{"name":"Journal of Advanced Oral Research","volume":"41 1","pages":"191 - 199"},"PeriodicalIF":0.7,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90583420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mechanical, Chemical, and Biological Properties of 3D-Printed Abutments: A Systematic Review 3d打印基台的机械、化学和生物特性:系统综述
IF 0.7
Journal of Advanced Oral Research Pub Date : 2022-08-22 DOI: 10.1177/23202068221099772
Murilo Campos, T. T. Oliveira, A. Botelho, A. Reis
{"title":"Mechanical, Chemical, and Biological Properties of 3D-Printed Abutments: A Systematic Review","authors":"Murilo Campos, T. T. Oliveira, A. Botelho, A. Reis","doi":"10.1177/23202068221099772","DOIUrl":"https://doi.org/10.1177/23202068221099772","url":null,"abstract":"Aim: A systematic review of the methods of 3D printing and the materials used so far for the manufacture of abutments was performed to evaluate whether their clinical use is indicated through the mechanical, chemical, and biological analyses carried out. Materials and Methods: An electronic search conducted by three independent reviewers was carried out in the PubMed, Web of Science, Cochrane Library, Science Direct, and Lilac databases. The inclusion criterion was researching articles in English that contained as subject the manufacturing of abutments through 3D printing/additive manufacturing. Any meta-analyses, reviews, book chapters, abstracts, letters, conferences papers, and studies without abutments printed were excluded. Results: We found 780 references, which after applying the exclusion criteria resulted in the final inclusion of seven articles for review. The studies had a high heterogeneity, showing different materials and methodologies to manufacture abutments, which makes a comparison between them difficult, and for this reason it was not possible to carry out a meta-analysis with the data found. Conclusions: Even with the limitations found in the present research, it is possible to conclude that printed abutments have adequate mechanical, chemical, and biological properties that can indicate their clinical use. 3D printing presents high accuracy and speed and can produce customized abutments according to each case.","PeriodicalId":43017,"journal":{"name":"Journal of Advanced Oral Research","volume":"29 1","pages":"167 - 175"},"PeriodicalIF":0.7,"publicationDate":"2022-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74015653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Estimation of Salivary Neopterin Levels in Aggressive and Chronic Periodontitis After Nonsurgical Periodontal Therapy: A Cohort Study 侵袭性和慢性牙周炎非手术治疗后唾液新蝶呤水平的评估:一项队列研究
IF 0.7
Journal of Advanced Oral Research Pub Date : 2022-08-21 DOI: 10.1177/23202068221116749
S. N. Gottumukkala, Chaitanya A., Ramesh Konathala Santhosh Venkata, Gautami. S. Penmetsa, Suneetha Koneru, Swetha Pasupuleti
{"title":"Estimation of Salivary Neopterin Levels in Aggressive and Chronic Periodontitis After Nonsurgical Periodontal Therapy: A Cohort Study","authors":"S. N. Gottumukkala, Chaitanya A., Ramesh Konathala Santhosh Venkata, Gautami. S. Penmetsa, Suneetha Koneru, Swetha Pasupuleti","doi":"10.1177/23202068221116749","DOIUrl":"https://doi.org/10.1177/23202068221116749","url":null,"abstract":"Aim: Neopterin is a marker associated with cell-mediated immunity produced by interferon-Ɣ-stimulated macrophages. The levels of neopterin in body fluids are elevated in infections, autoimmune diseases, malignancies, and allograft rejections. Recently, it was shown to be associated with the initiation and progression of periodontal disease. This investigation was designed to explore the use of salivary neopterin in predicting the outcome of nonsurgical periodontal therapy (NSPT) in aggressive and chronic periodontitis patients. Materials and Methods: This case-control study with stratified sampling comprised 45 subjects divided into three groups: a control group of 15 periodontally healthy participants, a test Group A of 15 participants with chronic periodontitis, and a test Group B of 15 participants with aggressive periodontitis. Periodontal parameters, including plaque index (PI), gingival index (GI), probing depth (PD), and clinical attachment level (CAL), were recorded at baseline and three months after scaling and root planing (SRP). An enzyme-linked immunosorbent assay (ELISA) analysis was performed to measure neopterin levels in saliva in study groups before and after SRP. Kruskal–Wallis analysis of variance and Mann–Whitney U tests were done for intra- and intergroup comparisons. The correlation between salivary neopterin levels with clinical parameters was done by Karl Pearson’s correlation coefficient. Results: Baseline salivary neopterin levels were least in the control group (5 62 nmol/L), higher in test Group A (9.30 nmol/L), and highest in test Group B (9.76 nmol/L). Three months after SRP, there was a significant reduction in all the clinical parameters, and the reduction in mean salivary neopterin levels were 2.79 and 2.57 in test Group A and test Group B, respectively; the difference was not statistically significant. Conclusion: Salivary neopterin levels have the potential to be utilized as a diagnostic tool for detecting the presence, activity of the disease, and the course of the lesions. It cannot, however, be utilized to distinguish between chronic and aggressive periodontitis.","PeriodicalId":43017,"journal":{"name":"Journal of Advanced Oral Research","volume":"66 1 1","pages":"200 - 206"},"PeriodicalIF":0.7,"publicationDate":"2022-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83421695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Systematic Review and Meta-Analysis of the Success of Resin Composite Restorations 树脂复合修复体成功的系统回顾和荟萃分析
IF 0.7
Journal of Advanced Oral Research Pub Date : 2022-08-21 DOI: 10.1177/23202068221114979
T. Kölüş, A. Uçar
{"title":"A Systematic Review and Meta-Analysis of the Success of Resin Composite Restorations","authors":"T. Kölüş, A. Uçar","doi":"10.1177/23202068221114979","DOIUrl":"https://doi.org/10.1177/23202068221114979","url":null,"abstract":"Aim: This review examines the studies on resin composites within the past decade and evaluates the materials’ application methods and success through Fédération Dentaire Internationale (FDI) scores. Materials and Methods: Search results from three databases (a total of 3295 studies) were transferred to Mendeley Desktop (Mendeley, London, UK) software and deduplicated (2638 studies). Eight studies were included in this meta-analysis after scanning the title, abstract, and full-text screening. Risk of bias analysis was performed using the Cochrane Handbook tool. Shapiro–Wilk, Kolmogorov–Smirnov, Kruskal–Wallis, and post hoc Tamhane’s T2 were used for statistical analysis. Results: Conventional composite’s surface staining FDI score was higher than flowable and silorane composites (no difference between these two). Also, conventional composite has the highest score in terms of staining. Conventional composite + two-step self-etch adhesive and bulk fill composite + two-step self-etch adhesive have lower FDI scores in marginal staining. In noncarious cervical lesions (NCCL), conventional composite + two-step total-etch adhesive has a higher score than flowable composite + two-step self-etch adhesive. Flowable composite + two-step self-etch adhesive and conventional composite + single-step self-etch adhesive have the highest FDI scores for marginal adaptation (no statistical difference between them). Conventional composite + two-step self-etch adhesive and bulk fill composite + two-step self-etch have the lowest scores (no statistical difference between them). For recurrence of caries, all groups have Score 1, the best score, and there is no significant difference between them. Conclusions: Each restorative material and adhesive system has different advantages, and the practitioner must choose the most appropriate.","PeriodicalId":43017,"journal":{"name":"Journal of Advanced Oral Research","volume":"8 1","pages":"157 - 166"},"PeriodicalIF":0.7,"publicationDate":"2022-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84477021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Variation in the Use of Basic Behavioral Management Techniques in General and Pediatric Dental Practice: A Cross-sectional Study 在普通和儿童牙科实践中使用基本行为管理技术的差异:一项横断面研究
IF 0.7
Journal of Advanced Oral Research Pub Date : 2022-08-05 DOI: 10.1177/23202068221103983
Osama Felemban, Ruba A. Baamer, Zuhor Bukhari, K. Baghlaf, M. Aldajani, Ohoud Sijini
{"title":"Variation in the Use of Basic Behavioral Management Techniques in General and Pediatric Dental Practice: A Cross-sectional Study","authors":"Osama Felemban, Ruba A. Baamer, Zuhor Bukhari, K. Baghlaf, M. Aldajani, Ohoud Sijini","doi":"10.1177/23202068221103983","DOIUrl":"https://doi.org/10.1177/23202068221103983","url":null,"abstract":"Aim: Basic guidance on nonpharmacological behavioral management techniques in dental practice is fundamental for the effective treatment of pediatric patients. The aim of this study was to compare the use of basic nonpharmacological behavior guidance in general and specialist pediatric dentists and to evaluate the perceived difference in their effectiveness across hospital clinics in Jeddah, Saudi Arabia. Material and Methods: A cross-sectional study with a nonpurposive sample of 179 registered general and pediatric dentists in the Saudi Dental Society based in Jeddah in 2019. Participants were contacted and asked to complete a validated questionnaire. The first section of the questionnaire comprised questions on demographic data and the second section investigated the frequency of the use of various behavioral management techniques. Descriptive statistics (frequency and percentages) and inferential statistics were used. Results: A total of 109 participants completed the survey; 52 were general dentists and 57 were pediatric dentists. The techniques tell–show–do (P = .018), positive reinforcement (P = .004), distraction (P = .001), and nonverbal communication (P = .001) were used more frequently by pediatric dentists than general dentists, and there were statistically significant differences. Also, pediatric dentists reported that the techniques tell–show–do (P = 0.035), positive reinforcement (P = .026), distraction (P = .011), and nonverbal communication (P = .007) were highly effective more often than general dentists did. Conclusions: Statistically significant differences were found between general and pediatric dentists in the use of basic behavioral management techniques. Broadly, general dentists used fewer behavior guidance techniques compared to pediatric dentists. More pediatric dentists reported that behavioral management techniques were effective in comparison to general dentists.","PeriodicalId":43017,"journal":{"name":"Journal of Advanced Oral Research","volume":"93 1","pages":"225 - 233"},"PeriodicalIF":0.7,"publicationDate":"2022-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83776933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Color Change Evaluation of Three Universal Resin Composites after Storage in Water: An In Vitro Study 三种通用树脂复合材料在水中保存后的颜色变化评价:体外研究
IF 0.7
Journal of Advanced Oral Research Pub Date : 2022-08-04 DOI: 10.1177/23202068221099100
Sinem Akgül, Ceyda Gündoğdu
{"title":"Color Change Evaluation of Three Universal Resin Composites after Storage in Water: An In Vitro Study","authors":"Sinem Akgül, Ceyda Gündoğdu","doi":"10.1177/23202068221099100","DOIUrl":"https://doi.org/10.1177/23202068221099100","url":null,"abstract":"Aim: The aim of this in vitro study was to evaluate the color changes of three different universal resin composites after immersion in distilled water for one month. Materials and Methods: Omnichroma, Estelite Σ Quick, and Filtek Universal Restorative were investigated. Ten disk shaped specimens (6 mm diameter, 2 mm thickness) were prepared according to the manufacturers’ instructions for each material. After polishing, initial color measurements were taken followed by individual storage of the specimens in distilled water at 37 °C for one month when color measurements were repeated. The change in the color of each resin composites (ΔE00) was calculated with a digital method, using the CIEDE2000 color difference formula. The data were analyzed using one-way ANOVA followed by Tukey post-hoc test (P < .05). Results: All resin composites exhibited acceptable color change after one month. Omnichroma exhibited the highest color change (2.26 ± 0.48) value while Filtek Universal Restorative showed the lowest (1.14 ± 0.38) value. All color parameters influenced the ΔE00 values in all groups except Filtek Universal for ΔL* and Δb values. Conclusion: When performing composite resin restorations, especially for esthetic purposes, polymerization may lead to change in the color of restorative material over time, but it should be considered whether this is within acceptable limits.","PeriodicalId":43017,"journal":{"name":"Journal of Advanced Oral Research","volume":"100 1","pages":"176 - 182"},"PeriodicalIF":0.7,"publicationDate":"2022-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85792554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Comparison of the Marginal and Internal Discrepancy of Metal-Ceramic Restorations Produced by Milling for Soft Metal, Direct Metal Laser Sintering and Casting Methods: An In Vitro Study 软金属铣削、直接金属激光烧结和铸造金属陶瓷修复体的边缘和内部差异比较:体外研究
IF 0.7
Journal of Advanced Oral Research Pub Date : 2022-07-11 DOI: 10.1177/23202068221103980
Nazli Aydin, Orhun Ekren, E. Koçak, Y. Uçar
{"title":"Comparison of the Marginal and Internal Discrepancy of Metal-Ceramic Restorations Produced by Milling for Soft Metal, Direct Metal Laser Sintering and Casting Methods: An In Vitro Study","authors":"Nazli Aydin, Orhun Ekren, E. Koçak, Y. Uçar","doi":"10.1177/23202068221103980","DOIUrl":"https://doi.org/10.1177/23202068221103980","url":null,"abstract":"Aim: To evaluate the effect of ceramic firing cycles on the internal and marginal discrepancy of restorations fabricated using conventional lost wax casting (LW), direct metal laser sintering (DMLS), and milling for soft metal (MS). Materials and Methods: A total of 45 restorations were produced by LW, DMLS, and MS methods (n = 15), according to the digital impression on the metal die representing the prepared first molar. The internal discrepancy (ID) was measured through the silicon weight method and the marginal discrepancy (MD) was measured using a light microscope. ID and MD measurements were repeated following the metal manufacturing, ceramic application, and glazing. Statistical analyses were conducted by means of two-way analysis of variance and Tukey-HSD (α = 0.05) tests. Results: Statistically significant differences were found between the fabrication methods (P ≤ 0.001) both for MD and ID. The mean MD values of the restorations were 31.4 ± 13.8 µm for MS, 20.8 ± 14.4 µm for LW, and 7.3 ± 6 µm for DMLS. A statistically significant increase was observed in the mean MD values of metal frameworks (P ≤ 0.001) following ceramic and glaze applications. However, no statistically significant difference was found between the ceramic and the glaze applied stages (P = .072). The mean ID values were 37 ± 5.7 mg for LW, 28 ± 6.1 mg for DMLS, and 21.6 ± 7.3 mg for MS. Unlike the manufacturing method, ceramic firing cycles had no effects on the ID (P > 0.05). Conclusion: MS had the highest mean MD, but it had the lowest ID. The ceramic firing had a significantly negative effect only on MD.","PeriodicalId":43017,"journal":{"name":"Journal of Advanced Oral Research","volume":"104 1","pages":"183 - 190"},"PeriodicalIF":0.7,"publicationDate":"2022-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86745349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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