The International journal of prosthodontics最新文献_第5页

"A Requiem for the Periodontal Ligament"" A Nuanced Perspective. "牙周韧带的安魂曲"细致入微的视角。

The International journal of prosthodontics Pub Date : 2024-08-23 DOI: 10.11607/ijp.2024.4.e

Steven J Sadowsky

引用次数: 0

EAO Junior Committee Summer Camp 2023: Fostering Communication, Leadership, and Connections. 2023 年 EAO 初级委员会夏令营：培养沟通、领导力和联系。

The International journal of prosthodontics Pub Date : 2024-08-23

Pierluigi Romandini, Lucrezia Paternó Holtzman, Maria-Angeliki Alexopoulou, Kathrin Becker, Balazs Feher, Nikolay Makarov, Iva Milinkovic, Miha Pirc, João Pitta, Pavel Scarlat, Ignacio Sanz-Sánchez

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THE EFFECT OF CEMENT AND SCREW ON THE RESISTANCE OF AN IMPLANT CROWN TELESCOPICALLY ENGAGED TO A HEXAGONAL-SHAPED ABUTMENT UNDER COMPRESSIVE DYNAMIC CYCLIC FATIGUE LOADING. 水泥和螺钉对六角形桥台在压缩动态循环疲劳载荷下伸缩式种植体冠阻力的影响。

The International journal of prosthodontics Pub Date : 2024-08-23 DOI: 10.11607/ijp.8362

Jan C Kwan, Norman Kwan

{"title":"THE EFFECT OF CEMENT AND SCREW ON THE RESISTANCE OF AN IMPLANT CROWN TELESCOPICALLY ENGAGED TO A HEXAGONAL-SHAPED ABUTMENT UNDER COMPRESSIVE DYNAMIC CYCLIC FATIGUE LOADING.","authors":"Jan C Kwan, Norman Kwan","doi":"10.11607/ijp.8362","DOIUrl":"10.11607/ijp.8362","url":null,"abstract":"Purpose: To investigate the resistance of an implant crown telescopically engaged to a geometrically defined hexagonal abutment with and without cement under compressive dynamic cyclic fatigue loading.Materials and methods: 40 crowns, 9 mm in height, were cast from prefabricated plastic copings, each telescopically engaged to a 3-mm-high machined hexagonal abutment. 20 crowns were retained with zinc phosphate cement, and 20 crowns were retained with a screw. A vertical load of 15 kg was applied to all samples under oscilla)on. A Periotest was used to measure the mobility of the implant crown in Periotest values (PTV). Test endpoints were defined by the following: fatigue cycles ≥ 20 million; crown PTV > 10; or if samples became visibly loose or component fracture.Results: Cement-retained crowns failed on average at 2.60 x 106 cycles ± 2.27, while screw-retained crown samples failed at 2.17 x 106 cycles ± 1.27 with no significant difference (P > .05). Implant and abutment screw fractures were the most prevalent mode of failure in the cement-retained group, while in the screw-retained group, failures were caused by the loosening of one or both screw joints. The rate of increase in PTV was higher in the screw-retained group than in the cement-retained group.Conclusions: Under the experimental conditions, an implant crown telescopically engaged vertically to a 3-mm-tall hexagonal abutment, under compressive dynamic cyclic fatigue loading with or without cement, demonstrated no differences in resistance or failure outcomes. A cement-retained implant crown with telescopic engagement to the abutment is more rigid, resulting in more implant and abutment screw fractures than loosening.","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"175-186"},"PeriodicalIF":0.0,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41224510","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

Retrospective Evaluation of Factors Affecting Long-Term Clinical Performance of CAD/CAM Laminate Veneers. 影响CAD-CAM层压板长期临床性能因素的回顾性评价。

The International journal of prosthodontics Pub Date : 2024-08-23 DOI: 10.11607/ijp.8499

Nazmiye Sen, Ryan C Olley

{"title":"Retrospective Evaluation of Factors Affecting Long-Term Clinical Performance of CAD/CAM Laminate Veneers.","authors":"Nazmiye Sen, Ryan C Olley","doi":"10.11607/ijp.8499","DOIUrl":"10.11607/ijp.8499","url":null,"abstract":"Purpose: To assess the clinical performance of CAD/CAM laminate veneers placed by a single operator and systematically evaluated for up to 10 years.Materials and methods: A total of 197 laminate veneers fabricated using either feldspathic ceramics (VMII) or lithium disilicate ceramics (EmaxCAD) were followed up to 10 years in 32 patients. Technical, esthetic, and biologic findings of each restoration were evaluated using modified United States Public Health Service criteria. The survival and complication rates were assessed using Kaplan-Meier survival analysis and compared using log-rank test. Statistical significance was set at P < .05.Results: The estimated Kaplan-Meier survival rate was 91.9% after the mean observation period. According to the ceramic system used, the estimated Kaplan-Meier survival rate amounted to 92.7% for EmaxCAD and 89.1% for VMII. Survival rates were significantly affected by the location of veneer according to log-rank test (P < .05). A range of survival rates between 83.3% and 98.6% were observed based on the location of veneer.Conclusions: CAD/CAM laminate veneers milled from feldspathic or lithium disilicate ceramics have comparable long-term survival rates. Oral positioning affects the survival of veneers. Veneers of incisors have higher survival rates than the veneers of maxillary canines and premolars.","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"411-416"},"PeriodicalIF":0.0,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41224509","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

Evaluation of Color and Translucency of Stained and Glazed Monolithic Lithium Disilicates and Zirconia After Toothbrushing with Different Dentifrices and Thermocycling. 不同牙膏和热循环对染色和釉面单片硅酸锂和氧化锆刷牙后颜色和透明度的评价。

The International journal of prosthodontics Pub Date : 2024-08-23 DOI: 10.11607/ijp.8495

Bruno Arruda Mascaro, Jean-Pierre Salomon, Marina Santos Demartine, Tassiane Caroline Nicola, José Maurício Dos Santos Nunes Reis

{"title":"Evaluation of Color and Translucency of Stained and Glazed Monolithic Lithium Disilicates and Zirconia After Toothbrushing with Different Dentifrices and Thermocycling.","authors":"Bruno Arruda Mascaro, Jean-Pierre Salomon, Marina Santos Demartine, Tassiane Caroline Nicola, José Maurício Dos Santos Nunes Reis","doi":"10.11607/ijp.8495","DOIUrl":"10.11607/ijp.8495","url":null,"abstract":"Purpose: To evaluate changes in color and translucency of stained and glazed monolithic lithium disilicates and zirconia after toothbrushing with conventional or whitening dentifrices followed by thermocycling.Materials and methods: Samples (n = 20/material) from CAD/CAM (IPS e.max CAD [EC]) and pressable (IPS e.max Press [EP]) lithium disilicates and 5Y-PSZ zirconia (Prettau 4 Anterior [PA]) were prepared and received staining and glazing procedures. Aging was performed by toothbrushing with conventional (n = 10) or whitening (n = 10) dentifrices, followed by thermocycling simulating 5, 10, and 15 years. Color coordinates L*, a*, b*, , and C* and h° values were assessed with a spectrophotometer at baseline and after each aging period to calculate color changes (ΔE00), lightness (ΔL*), and translucency parameter (TP). Data were analyzed using three-way repeated measures ANOVA's followed by Sidak post-hoc test (α = .05).Results: When comparing the dentifrices, EC and EP produced the greatest ΔE00 after 15 years with the whitening dentifrice (P < .05). Regardless of the dentifrice, PA showed greater ΔE00 than EC after 10 years (P < .05). When comparing the aging periods, EC and PA did not show differences in ΔE00 for both dentifrices (P ≥ .05). EC and EP produced an increased ΔL* after 15 years in the whitening group (P < .05). In the whitening groups, the ΔL* values of PA differ (P < .005) from those of lithium disilicates. Regardless of the experimental group, the TP values followed the inequality: PA < EC < EP (P < .05).Conclusions: Overall, the color of stained and glazed monolithic lithium disilicates and zirconia changed under aging with greater effects for whitening dentifrice. Aging did not influence translucency.","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"423-431"},"PeriodicalIF":0.0,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138292673","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

Digital Full-Arch Implant-Supported Polymethyl Methacrylate Interim Prosthesis: A Practice-Based Cohort Study on Survival and Quality of Life. 数字全弓种植体支持的聚甲基丙烯酸甲酯临时假体：一项基于实践的生存和生活质量队列研究。

The International journal of prosthodontics Pub Date : 2024-08-23 DOI: 10.11607/ijp.8468

Carlota Mendonça, Diana de Macedo, Carlos Nicolai, Hugo Madeira, Eric Van Dooren, David Norré, António Mata

{"title":"Digital Full-Arch Implant-Supported Polymethyl Methacrylate Interim Prosthesis: A Practice-Based Cohort Study on Survival and Quality of Life.","authors":"Carlota Mendonça, Diana de Macedo, Carlos Nicolai, Hugo Madeira, Eric Van Dooren, David Norré, António Mata","doi":"10.11607/ijp.8468","DOIUrl":"10.11607/ijp.8468","url":null,"abstract":"Purpose: To evaluate the clinical survival and impact on oral health-related quality of life (OHRQoL) of immediate loading of implant-supported full-arch CAD/CAM-milled PMMA interim restorations.Materials and methods: This was a practice-based prospective cohort study performed in a Portuguese dental clinic. Eleven patients received a total of 17 CAD/CAM fully implant-supported, screw-retained, full-arch restorations with milled PMMA and were followed up for 1 year. The primary outcome was prosthesis survival, determined with a modification of the California Dental Association score and a Kaplan-Meier survival function analysis. The secondary outcome was the patient quality of life, as defined by application of the OHIP-14-PT questionnaire and standardized effect size variation between two visits. Significance was set at 5%.Results: Survival probability at 12 months was 76%, complete fracture of the prosthesis occurred in 17.6% of the cases, and small fractures without lab involvement occurred in 5.9% of cases. There was a significant improvement in OHRQoL between visit 1 and visit 4. The mean difference and effect size for total OHIP-14-PT score were -32.91 ± 3.68 and 3.66 (95% CI -1.83 to -5.80) respectively (P < .001* Wilcoxon matched paired rank test).Conclusions: Fullarch implant-supported CAD/CAM-milled PMMA interim prosthesis seem to be a viable approach with good survival rate and great impact on patient OHRQoL.","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"394-403"},"PeriodicalIF":0.0,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41224433","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

3D-printed Zirconia and Lithium Disilicate in Dentistry and Their Clinical Applications. 牙科中的 3D 打印氧化锆和二硅酸锂及其临床应用。

The International journal of prosthodontics Pub Date : 2024-08-02 DOI: 10.11607/ijp.8831

Wei-Shao Lin, Li Chen, Amal Alfaraj

{"title":"3D-printed Zirconia and Lithium Disilicate in Dentistry and Their Clinical Applications.","authors":"Wei-Shao Lin, Li Chen, Amal Alfaraj","doi":"10.11607/ijp.8831","DOIUrl":"https://doi.org/10.11607/ijp.8831","url":null,"abstract":"The review focuses on the progressive role of 3D-printing in dentistry, particularly emphasizing the use of zirconia-based and lithium disilicate (LS2) -based ceramic materials. Celebrated for their biocompatibility and esthetic resemblance to natural teeth, these materials have shown promising results with high success rates. Digital light processing (DLP) and stereolithography (SLA) have been noted for producing superior 3D-printed ceramic products. Despite facing challenges such as surface defects, mechanical strength limitations, and esthetic inconsistencies, active research is dedicated to refining the quality and esthetics of 3D-printed zirconia-based and LS2-based ceramics. The review acknowledges the need to mitigate the steep costs of this manufacturing form and recognizes the current shortfall in clinician and technician awareness of these advanced techniques. Addressing these issues through focused research on improving surface quality, dimensional accuracy, and mechanical properties of 3D-printed dental prostheses is crucial, as is enhancing the dental community's understanding and acceptance of this innovative technology.","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":" ","pages":"1-29"},"PeriodicalIF":0.0,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141904104","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

Flexural Strength of Different Yttrium Oxide Containing Monochrome and Multilayer Partially Stabilized Zirconia upon Various Sintering Rates. 不同烧结速率下不同含氧化钇单层和多层部分稳定氧化锆的抗弯强度

The International journal of prosthodontics Pub Date : 2024-08-02 DOI: 10.11607/ijp.9092

Atthasit Boonbanyen, Newt Juntavee, Apa Juntavee

{"title":"Flexural Strength of Different Yttrium Oxide Containing Monochrome and Multilayer Partially Stabilized Zirconia upon Various Sintering Rates.","authors":"Atthasit Boonbanyen, Newt Juntavee, Apa Juntavee","doi":"10.11607/ijp.9092","DOIUrl":"https://doi.org/10.11607/ijp.9092","url":null,"abstract":"Purpose: Sintering procedures influence the properties of zirconia. This study evaluated the effect of varying sintering rates on flexural strength (σ) of 3, 4, and 5 mol% yttria (Y) containing monochrome (Mo) and multilayer (Mu) zirconia. Materials and Methods: 270 specimens (width×length×thickness = 11.2×20×1.5 mm) were prepared from Mo and Mu of 3Y, 4Y, and 5Y zirconia and randomly sintered at regular (RS: 10 °C/min), fast (FS: 35 °C/min), and speed (SS: 70 °C/min) sintering (n = 15/group). Three-point bending test was determined for σ. ANOVA and Bonferroni test were analyzed for significant differences of σ (a=0.05). The microstructure and crystalline [monoclinic (m), tetragonal (t), and cubic (c)] phases were evaluated by SEM and XRD.Results: σ of zirconia was affected by zirconia type, shade pattern, and sintering rate. Significant higher σ for 3Y>4Y>5Y (p<0.05). Significant greater σ for Mu>Mo (p<0.05). Significant reduction of σ upon SS than RS and FS (p<0.05). However, no significant effect on σ upon varying sintering rates within each type of zirconia (p>0.05). SEM indicated greater grain size in 5Y than in 4Y and 3Y. XRD indicated higher t phase in 3Y, whereas higher c phase in 5Y. Mo indicated a higher c phase than Mu.Conclusions: σ was influenced by Y content (3Y>4Y>5Y), shade pattern (Mu>Mo), and sintering rate (RS@FS>SS). Nonetheless, no influence of varying sintering rates on σ for each type of zirconia, suggesting sintering zirconia with RS and FS for expecting higher σ and at SS for acceptable σ for chair-side cost-effective restoration.","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":" ","pages":"1-32"},"PeriodicalIF":0.0,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141904107","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 Survey of Preferences for Ceramic Materials on Tooth-Supported Crowns Among Dental Practitioners in Chile. 智利牙科医生对牙冠陶瓷材料偏好的调查。

The International journal of prosthodontics Pub Date : 2024-08-02 DOI: 10.11607/ijp.8880

Macarena Rivera, Alexandra Angulo, Barbara Cerda, Rolando Schulz, Markus B Blatz

{"title":"A Survey of Preferences for Ceramic Materials on Tooth-Supported Crowns Among Dental Practitioners in Chile.","authors":"Macarena Rivera, Alexandra Angulo, Barbara Cerda, Rolando Schulz, Markus B Blatz","doi":"10.11607/ijp.8880","DOIUrl":"https://doi.org/10.11607/ijp.8880","url":null,"abstract":"Purpose: To evaluate the preferences of dental practitioners for tooth-supported crowns dental ceramics by means of an online survey and to assess the influence of age, gender, years of experience, and dental specialty on those preferences. Materials and Methods: An anonymous questionnaire was delivered online through Google Surveys, targeting 796 dentists. It contained 17 dichotomous, closed questions with two sections. The first section dealt with general characteristics, including age, gender, years of experience, training in prosthodontics, and hours worked per week. The second section included questions regarding preferences of different materials for crowns, and the use of digital workflows. Analyses were carried out with Stata 14.0 software (StataCorp, TX, USA). A significance level of p=0.05 was adopted. Results: 248 surveys were answered. Practitioners in Chile preferred lithium disilicate for the anterior region (55.2%) but also for the posterior area (40.7%), regardless of their age, gender, years since graduation, hours worked per week or any training in prosthodontics. Chilean dentists over 50 years old considered zirconia almost 4 times more than those under 30 years old for anterior crowns (51.85%). 59.68% of dentists take digital impressions, and 37.10% have access to chairside CAD/CAM technology. In this group, 54.4% preferred feldspathic ceramic for anterior and 23.9% for posterior crowns. Conclusions: While there is a wide range of dental ceramic materials, these results provide a snapshot of the current trends in Chile where lithium disilicate is the most preferred ceramic material for tooth-supported crowns, and metal-ceramic is the least preferred material.","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":" ","pages":"1-21"},"PeriodicalIF":0.0,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141904105","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

Monomer Elution of Additive and Subtractive Manufactured Resins for Permanent Restorations. 用于永久修复的添加型和减量型人造树脂的单体洗脱。

The International journal of prosthodontics Pub Date : 2024-08-02 DOI: 10.11607/ijp.9119

Samet Atasoy, Sultan Aktuğ Karademir

{"title":"Monomer Elution of Additive and Subtractive Manufactured Resins for Permanent Restorations.","authors":"Samet Atasoy, Sultan Aktuğ Karademir","doi":"10.11607/ijp.9119","DOIUrl":"https://doi.org/10.11607/ijp.9119","url":null,"abstract":"Purpose: To evaluate the elution of residual monomers from resins used in additive and subtractive manufactured permanent restorations over a period of one month, using highperformance liquid chromatography (HPLC). Materials and Methods: Two additive manufacturing permanent crown resins (Crowntec, CT and VarseoSmile Crown Plus, VS) and a subtractive manufacturing resin nanoceramic (Cerasmart, CS) were used to fabricate 30 disc-shaped samples (10 × 2 mm) (n=10). The elution of bisphenol A ethoxylate dimethacrylate (BisEMA), urethane dimethacrylate (UDMA), and triethylene glycol dimethacrylate (TEGDMA) monomers was measured with HPLC at 1 day and 30 days after immersion. One-way analysis of variance (ANOVA) and post-hoc Tukey tests were used to evaluate differences in eluted monomer concentrations. Paired-sample t tests were used to test the differences in monomer concentration between storage times. Results: CS released BisEMA and UDMA residual monomers, while VS and CT released BisEMA and TEGDMA residual monomers. The residual monomer elution from CT was consistently lower than that from VS for both BisEMA (p <0.001) and TEGDMA (p <0.001). CS showed a decreasing release pattern in BisEMA (p =0.002) and UDMA (p <0.001) residuel monomers, whereas VS and CT showed an increasing release pattern in BisEMA (p <0.001) and TEGDMA (p <0.001) residuel monomers. Conclusions: The additive manufactured composite resins released higher amounts of residual monomers than the subtractive manufactured resin nanoceramic. Although the amounts of residual monomers released in the additive manufactured composite resins increased over time in contrast to subtractive manufactured resin nanoceramic, these values were below cytotoxic levels.","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":" ","pages":"1-14"},"PeriodicalIF":0.0,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141904109","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