The European journal of prosthodontics and restorative dentistry最新文献

Water as Veneering Modeling Liquid Affects Microhardness of Glassy Matrix Veneering Ceramic. 水作为贴面模拟液对玻璃基贴面陶瓷显微硬度的影响

IF 1.3

The European journal of prosthodontics and restorative dentistry Pub Date : 2022-11-30 DOI: 10.1922/EJPRD_2372Amaral05

M Amaral, T M B Campos, T Takahashi, G S D Moura, G F Ramos, R M D Melo, M Özcan

{"title":"Water as Veneering Modeling Liquid Affects Microhardness of Glassy Matrix Veneering Ceramic.","authors":"M Amaral, T M B Campos, T Takahashi, G S D Moura, G F Ramos, R M D Melo, M Özcan","doi":"10.1922/EJPRD_2372Amaral05","DOIUrl":"https://doi.org/10.1922/EJPRD_2372Amaral05","url":null,"abstract":"Purpose/aim: To evaluate the effect of different veneering liquids used for modeling on microhardness, fracture toughness and biaxial flexural strength of a glass-veneering ceramic.Material and methods: The manufacturer recommended modeling liquid (ML), distilled water (DW), isopropyl alcohol (IA), 0.5% (P05), 1% (P1), and 2% (P2) polyethylene glycol solutions were mixed with feldspathic ceramic powder to form disc-shaped samples (n=20, 15 mm × 1.2 mm). After sintering, samples were mirror-polished and subjected to Vickers indentation (n=5) for measurement of microhardness and fracture toughness. The remaining 15 samples from each group were subjected to biaxial flexural strength. Data were subjected to one-way ANOVA and Weibull analysis.Results: The microhardness was affected by veneering liquid (p=0.002): DW promoted higher microhardness values than ML and IA. Fracture toughness (p=0.301) and flexural strength (p=0.930) were not affected by the veneering liquid but Weibull parameters were affected. All groups presented surface pores under high magnification.Conclusion: Even though the use of DW led to higher values of surface microhardness than the ML, all obtained values are inside the range of enamel microhardness values reported in the literature. Such parameters may affect antagonist wear and should be reported in clinical trials.","PeriodicalId":520796,"journal":{"name":"The European journal of prosthodontics and restorative dentistry","volume":" ","pages":"262-266"},"PeriodicalIF":1.3,"publicationDate":"2022-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40324376","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

The Influence of a Flexible Model on the Marginal Adaptation of Inlay Composite Restorations: A MicroCT Analysis. 柔性模型对嵌体复合修复体边缘适应性的影响:微ct分析。

IF 1.3

The European journal of prosthodontics and restorative dentistry Pub Date : 2022-08-30 DOI: 10.1922/EJPRD_2351Villanueva07

M V Villanueva, G D S Balbinot, G H Mogollon, V C B Leitune, F M Collares

{"title":"The Influence of a Flexible Model on the Marginal Adaptation of Inlay Composite Restorations: A MicroCT Analysis.","authors":"M V Villanueva, G D S Balbinot, G H Mogollon, V C B Leitune, F M Collares","doi":"10.1922/EJPRD_2351Villanueva07","DOIUrl":"https://doi.org/10.1922/EJPRD_2351Villanueva07","url":null,"abstract":"The aim of this study was to evaluate the influence of flexible models on the marginal adaptation of indirect resin composite restorations. Thirty-six cavity preparations were made for class II restorations in permanent molar teeth. Three groups (n=12) were defined following three impressions/model material combinations: G(STONE), polyvinylsiloxane, and type IV stone model, as a control group; G(IMPRESSIONPVS), alginate and flexible polyvinylsiloxane; G(MODELPVS), alginate and flexible polyvinylsiloxane for models. All restorations were positioned on their respective teeth and evaluated by micro-computed tomography. Absolute marginal discrepancies were measured digitally (ImageJ). The results were compared using one-way ANOVA (p⟨ 0.05). The mean ± SD absolute marginal discrepancy of indirect resin composite restorations made from flexible and rigid stone models was as follows: G(STONE), 206 (±79.95) μm; G(IMPRESSIONPVS), 221.50 (±61.73) μm; G(MODELPVS), 203.25 (±65.93) μm. Absolute marginal discrepancies were not significantly influenced by the flexible and rigid stone models (p=0.78). The flexible or rigid stone model did not influence the marginal adaptation of the indirect resin composite restorations.","PeriodicalId":520796,"journal":{"name":"The European journal of prosthodontics and restorative dentistry","volume":" ","pages":"200-206"},"PeriodicalIF":1.3,"publicationDate":"2022-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39873494","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 Translucency and Curing Mode of Four CAD/CAM Materials on Polymerization Efficiency of Light and Dual Cure Resin Cements. 四种CAD/CAM材料的半透明性和固化方式对光固化和双固化树脂水泥聚合效率的影响。

IF 1.3

The European journal of prosthodontics and restorative dentistry Pub Date : 2022-08-30 DOI: 10.1922/EJPRD_2353Shono09

N N Shono, A Elhejazi, A Maawadh, H Al Nahedh

{"title":"Effect of Translucency and Curing Mode of Four CAD/CAM Materials on Polymerization Efficiency of Light and Dual Cure Resin Cements.","authors":"N N Shono, A Elhejazi, A Maawadh, H Al Nahedh","doi":"10.1922/EJPRD_2353Shono09","DOIUrl":"https://doi.org/10.1922/EJPRD_2353Shono09","url":null,"abstract":"Purpose/aim: To determine the effect of translucency of four CAD/CAM materials and different curing modes on the degree of conversion of resin cements.Materials and methods: Disks were fabricated from IPS e.max CAD, Vita Suprinity, Vita Enamic, and DD Cube X². Translucency was measured using a spectrophotometer. The degree of conversion of two resin cements Variolink Esthetic DC and LC were measured using a Fourier transform infrared spectrometer. For Esthetic DC, the degree of conversion was determined in self-cure and dual cure modes. ANOVA, Tukey HSD test, and /Linear Regression R2 were used to statistically analyze the data.Results: There was a significant difference in the translucency of the four materials (P ⟨ 0.0001). The mean translucency of Vita Suprinity was significantly higher, followed by Vita Enamic, DD Cube X², and IPS E.max CAD. Degree of conversion of resin cements cured under DD Cube X² had the highest values (25.22%), whereas those cured under Vita Suprinity showed the lowest values (17.86%). The self-cure mode had the lowest degree of conversion values (16.22%) and dual cure mode showed the highest values (26.12%). A negative linear relationship was found between degree of conversion and translucency of the CAD/CAM materials.","PeriodicalId":520796,"journal":{"name":"The European journal of prosthodontics and restorative dentistry","volume":" ","pages":"230-238"},"PeriodicalIF":1.3,"publicationDate":"2022-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39873491","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

Evaluation of the Efficacy of Two Fibre-Reinforced Post Removal Techniques. 两种纤维增强支架去除技术的效果评价。

IF 1.3

The European journal of prosthodontics and restorative dentistry Pub Date : 2022-08-30 DOI: 10.1922/EJPRD_02101AlShabib06

A AlShabib, S Brindley, J Satterthwaite

{"title":"Evaluation of the Efficacy of Two Fibre-Reinforced Post Removal Techniques.","authors":"A AlShabib, S Brindley, J Satterthwaite","doi":"10.1922/EJPRD_02101AlShabib06","DOIUrl":"https://doi.org/10.1922/EJPRD_02101AlShabib06","url":null,"abstract":"Objective: The aim of this in-vitro study was to compare the amount of material (post and luting agent) and root dentine removed using two methods for removal of endodontic posts.Methods: Human premolar teeth (n=20) were sectioned at the CEJ and fibre reinforced posts were cemented at a length of 10mm following root canal therapy. Teeth were randomly assigned to two study groups. The methods of removal compared were: the use of RTD re-access kit (Composipost, RTD, France, St Egreve) in a conventional hand-piece driven by an electric motor (Group A); or a long tapered diamond bur (FG Diamond grit bur, Dentsply Ltd, UK) in an air-driven high speed turbine (Group B). Using micro- CT the volume of material and root dentine removed for each sample was calculated.Results: Both the volume of material removed and the volume of root dentine removed were significantly greater when using diamond burs. (p⟨0.001). The volume of dentine removed using the diamond bur method (mean 22.64mm³) was greater than the volume removed using the reaccess kit (mean 11.71mm³).Significance: Use of a diamond bur to remove fibre reinforced endodontic post removal poses higher risk for root perforation compared to the reaccess kit.","PeriodicalId":520796,"journal":{"name":"The European journal of prosthodontics and restorative dentistry","volume":" ","pages":"239-244"},"PeriodicalIF":1.3,"publicationDate":"2022-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39941007","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: 2

Comparison of Stud- Retentor Versus Bar-Clip Attachment as Implant- Supported Systems Used in Overdentures: A Systematic Review and Meta-Analysis. 螺柱-固位器与棒夹附着体作为种植支撑系统用于覆盖义齿的比较:系统综述和荟萃分析。

IF 1.3

The European journal of prosthodontics and restorative dentistry Pub Date : 2022-08-30 DOI: 10.1922/EJPRD_2338deCastro19

F M C de Castro, G Z Martins, H F P de Oliveira, P B Hernández, S Gavinha, G V O Fernandes

{"title":"Comparison of Stud- Retentor Versus Bar-Clip Attachment as Implant- Supported Systems Used in Overdentures: A Systematic Review and Meta-Analysis.","authors":"F M C de Castro, G Z Martins, H F P de Oliveira, P B Hernández, S Gavinha, G V O Fernandes","doi":"10.1922/EJPRD_2338deCastro19","DOIUrl":"https://doi.org/10.1922/EJPRD_2338deCastro19","url":null,"abstract":"This study aimed to perform a systematic review and meta-analysis to analyze the results obtained clinically for bar-clip versus stud-retainers in overdentures. Three databases (PubMed Central, MEDLINE, and BvSalud) were used beyond a manual search. The study followed strictly the inclusion and exclusion criteria, considering the PICO strategy. For the risk of bias and quality assessment of studies, in the case of RCT, there were six domains of analysis, and for non-RCT studies, the Modified Newcastle-Ottawa Scale was performed. A meta-analysis was developed using the available data for marginal bone loss (MBL) and survival rate. 25 studies were included. The stud-retentor had the lowest implant SR (87.6%) and the greatest MBL (1.96 mm). For the bar-clip system, the mean survival rate was 95.91%, with only 4 studies included for this system, and the mean MBL was 1.13 mm. Only 3 studies directly compared both systems quantitatively, showing a significantly greater MBL toward the stud-retention group. The results may not allow determination of the best system for overdenture (stud retentor or bar-clip). Therefore, most of the studies suggested the stud-retentor as a more preferable system due to better distribution of forces, biological peri-implant behavior, low-cost, and ease for removal facilitating the sanitization and/or repair.","PeriodicalId":520796,"journal":{"name":"The European journal of prosthodontics and restorative dentistry","volume":" ","pages":"169-187"},"PeriodicalIF":1.3,"publicationDate":"2022-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40324375","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: 2

Strain Gauge Analysis of the Stresses Induced by Different Secondary Coping Materials in Tooth Supported Telescopic Overdentures. 不同复盖材料对牙托套筒覆盖义齿应力的应变分析。

IF 1.3

The European journal of prosthodontics and restorative dentistry Pub Date : 2022-08-30 DOI: 10.1922/EJPRD_2361Mohamed09

A M A Mohamed, N H Nawar

{"title":"Strain Gauge Analysis of the Stresses Induced by Different Secondary Coping Materials in Tooth Supported Telescopic Overdentures.","authors":"A M A Mohamed, N H Nawar","doi":"10.1922/EJPRD_2361Mohamed09","DOIUrl":"https://doi.org/10.1922/EJPRD_2361Mohamed09","url":null,"abstract":"Purpose: To compare the stresses induced on the supporting abutments by different secondary coping materials; zirconia, Polyetheretherketone (PEEK) and Polyetherketone ketone (PEKK) in tooth supported telescopic overdentures using strain gauge analysis.Materials and methods: A virtual model simulating a completely edentulous mandibular arch with two telescopic overdenture abutments in the canine region was designed and printed. The abutments received a milled zirconia primary coping. The secondary coping was milled out of zirconia in the model ZR, PEEK in the model PE and PEKK in the model PK. Five overdentures were made for each model. Strain gauge rosettes were bonded mesial and distal to each abutment. Unilateral and bilateral loadings were applied. An ANOVA test was used for statistical analysis between the three models.(α=0.01).Results: Significant differences were found between the three models during unilateral and bilateral loading. Post Hoc Tukey tests showed significant difference between ZR and PE models, ZR and PK models in addition to PE and PK models during unilateral and bilateral loading.Conclusion: Zirconia copings induced the highest stress while the lowest stress values were induced by the PEKK copings.","PeriodicalId":520796,"journal":{"name":"The European journal of prosthodontics and restorative dentistry","volume":" ","pages":"214-222"},"PeriodicalIF":1.3,"publicationDate":"2022-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39873489","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: 2

Evaluation of Various Polishing Systems for Lithium Disilicate Glass-Ceramics. 二硅酸锂玻璃陶瓷各种抛光系统的评价。

IF 1.3

The European journal of prosthodontics and restorative dentistry Pub Date : 2022-08-30 DOI: 10.1922/EJPRD_2332Lee12

Y-J Lee, Y-H Huh, K-H Ko, C-J Park, L-R Cho

{"title":"Evaluation of Various Polishing Systems for Lithium Disilicate Glass-Ceramics.","authors":"Y-J Lee, Y-H Huh, K-H Ko, C-J Park, L-R Cho","doi":"10.1922/EJPRD_2332Lee12","DOIUrl":"https://doi.org/10.1922/EJPRD_2332Lee12","url":null,"abstract":"Objective: The aim of this study was to investigate the surface roughness of lithium disilicates (LS2s) polished using various polishing systems.Materials and methods: Two types of LS2 (A, Amber Mill and E, IPS e.max CAD) were polished using LS2-specific polishing systems (L-Edenta, L-Jota), a zirconia-specific polishing system (Z-Jota), and a conventional ceramic polishing system (P-Shofu) (n = 8 per group). The compositions of different polishing systems were analyzed using EDS. Surface roughness was measured using confocal laser scanning microscopy and analyzed using EDS and SEM. ANOVA and Tukey's tests were used for the statistical analyses (p = 0.05).Results: The polishing systems were mainly composed of C, O, and Si. The L-Jota group exhibited rougher surfaces than the other groups. Amber Mill exhibited higher surface roughness than IPS e.max CAD (p⟨0.001). Among the polishing systems, the L-Jota group presented the highest roughness value (pp⟨0.001). The surface roughness of the AL-Jota group was higher than that of the other groups.Conclusions: A sufficiently smooth surface can be achieved without a LS2-specific polishing system. Further, the same polishing system can have different effects depending on the type of LS2.","PeriodicalId":520796,"journal":{"name":"The European journal of prosthodontics and restorative dentistry","volume":" ","pages":"188-199"},"PeriodicalIF":1.3,"publicationDate":"2022-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39943584","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