The International journal of prosthodontics最新文献_第2页

A Preliminary Investigation on Physicomechanical Properties of High-Performance Polymers Reinforced on 3D-Printed Denture Bases. 三维打印义齿基托高性能聚合物增强材料物理力学性能的初步研究。

IF 1.8

The International journal of prosthodontics Pub Date : 2026-09-25 DOI: 10.11607/ijp.9402

Hao-Ern Lee, Muhammad Syafiq Alauddin, Zulfahmi Said, Mohd Ifwat Mohd Ghazali, Eshamsul Sulaiman

{"title":"A Preliminary Investigation on Physicomechanical Properties of High-Performance Polymers Reinforced on 3D-Printed Denture Bases.","authors":"Hao-Ern Lee, Muhammad Syafiq Alauddin, Zulfahmi Said, Mohd Ifwat Mohd Ghazali, Eshamsul Sulaiman","doi":"10.11607/ijp.9402","DOIUrl":"10.11607/ijp.9402","url":null,"abstract":"Purpose: To evaluate the physicomechanical characterization of 3D-printed denture bases after reinforcement with high-performance polyetherimide (PEI) microfillers.Materials and methods: The PEI microfillers (ULTEM 1000 PEI, SABIC) were incorporated into the 3D-printing denture base resin (NextDent Denture 3D+, 3D Systems) through polymer blending at various concentrations of 0.5%, 1%, 2%, and 3% (w/w), respectively, and printed using an LCD 3D printer (Mono 4K, Anycubic). The mechanical and physical properties were characterized by flexural strength and modulus, fracture toughness, and surface morphology using a universal testing machine (SLBL-5kN, Shimadzu) and scanning electron microscope (SEM; JSM 4600 SEM, JEOL).Results: The incorporation of PEI microfillers increased the mechanical properties of the 3D-printing denture base resin. The 0.5% group demonstrated the greatest flexural strength (101.5 ± 3.73 MPa) among all tested groups (P < .001). However, the flexural strength deteriorated as the composite ratio increased above 0.5% (P = .054). All the reinforced denture base resin groups had a higher flexural strength compared to the unmodified resin. For fracture toughness, the 0.5% group exhibited the greatest fracture toughness, and this property decreased as the filler content increased above 0.5% (P < .001). The microfillers were consistently rounded under SEM.Conclusions: This study confirms that the incorporation of microfillers demonstrates potential in enhancing the physicomechanical properties of 3D-printed denture base material.","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"631-637"},"PeriodicalIF":1.8,"publicationDate":"2026-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147719240","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 Technology-Assisted Dual-Approach Treatment of a Maxillary Canine with Radicular Dens Invaginatus: A Case Report. 数字技术辅助双入路治疗上颌犬根状突内陷1例。

IF 1.8

The International journal of prosthodontics Pub Date : 2026-09-25 DOI: 10.11607/ijp.9449

Tao Liu, Mengxi Zhou, Wen Ma, Xuefeng Ren, Mingzhu Zhang

{"title":"Digital Technology-Assisted Dual-Approach Treatment of a Maxillary Canine with Radicular Dens Invaginatus: A Case Report.","authors":"Tao Liu, Mengxi Zhou, Wen Ma, Xuefeng Ren, Mingzhu Zhang","doi":"10.11607/ijp.9449","DOIUrl":"10.11607/ijp.9449","url":null,"abstract":"Radicular dens invaginatus (RDI) is a developmental malformation often associated with severe periodontal destruction and a poor prognosis. Currently, no standardized treatment guidelines exist for RDI. Due to the complex and variable anatomy of affected teeth, one of the primary challenges in managing RDI is accurately locating and debriding the invaginated region while preserving pulp vitality and maintaining dental structural integrity. Therefore, this case report presents a clinical decision-making approach for the digitally assisted management of RDI. A female patient's maxillary left canine was diagnosed with RDI, complicated by infection and periodontal tissue loss, while pulp vitality remained intact. To ensure precise localization and thorough debridement of the invaginated lesion while preserving pulp vitality and tooth integrity, a dual surgical approach was designed using digital technology. Following infection removal, bioactive materials were applied for cavity filling, and guided tissue regeneration was performed. After a 1-year follow-up, pulp vitality was successfully maintained, and periodontal tissue healing was achieved.","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"698-706"},"PeriodicalIF":1.8,"publicationDate":"2026-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145411339","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

Load-Bearing Capacity of All-Ceramic Fixed Partial Dentures-Do In Vitro Tests Overestimate Strength? 全瓷固定局部义齿的承载能力——体外试验是否高估了强度？

IF 1.8

The International journal of prosthodontics Pub Date : 2026-09-25 DOI: 10.11607/ijp.9375

Kurt-Jürgen Erdelt, Josef Schweiger, Monika Bäumer, Daniel Edelhoff, Oliver Schubert

{"title":"Load-Bearing Capacity of All-Ceramic Fixed Partial Dentures-Do In Vitro Tests Overestimate Strength?","authors":"Kurt-Jürgen Erdelt, Josef Schweiger, Monika Bäumer, Daniel Edelhoff, Oliver Schubert","doi":"10.11607/ijp.9375","DOIUrl":"10.11607/ijp.9375","url":null,"abstract":"Purpose: To assess the impact of the testing model on the load-bearing capacity of monolithic zirconia three-unit fixed dental prostheses (FDPs) and to discuss its implications for transferring in vitro results to clinical reality.Materials and methods: In total, 32 CAD-designed three-unit FDPs milled from zirconia were resin-bonded to four different types of die models (n = 8 each): PM (models made from PMMA); FR (fiberglass-reinforced polymer models), NP (CoCr-alloy models), and TM (tooth mobility simulation models). Load-to-failure testing was performed, and data were analyzed (P < .05).Results: The mean fracture values were 1,676 ± 210 MPa in group TM, 1,820 ± 203 MPa in group PM, 2,266 ± 138 MPa in group FR, and 4,847 ± 496 MPa in group NP. All direct pairwise comparisons, except for TM and PM, showed significant differences.Conclusions: The results suggest that the nature of the underlying model has significant impact on the fracture values of all-ceramic FDPs in in vitro testing. Therefore, the validity of in vitro tests regarding clinical relevance must be questioned, emphasizing the necessity of a close-to-reality and highly standardized testing method.","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"676-679"},"PeriodicalIF":1.8,"publicationDate":"2026-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144304124","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

Evaluating AI Chatbot Performance Against Prosthodontic Residents on the National Prosthodontic Resident Examination (NPRE) from 2011 to 2023. 2011 - 2023年全国义齿住院医师考试（NPRE）中AI聊天机器人对义齿住院医师的表现评估

IF 1.8

The International journal of prosthodontics Pub Date : 2026-09-25 DOI: 10.11607/ijp.9486

Despoina Bompolaki, Esha Mukherjee, Kelsey A K Lee, Christopher Yoon, Hongseok An

{"title":"Evaluating AI Chatbot Performance Against Prosthodontic Residents on the National Prosthodontic Resident Examination (NPRE) from 2011 to 2023.","authors":"Despoina Bompolaki, Esha Mukherjee, Kelsey A K Lee, Christopher Yoon, Hongseok An","doi":"10.11607/ijp.9486","DOIUrl":"10.11607/ijp.9486","url":null,"abstract":"Purpose: To compare the performance of seven artificial intelligence (AI) chatbots (ChatGPT-3.5, ChatGPT-4, ChatGPT-4o, Gemini, Claude 3, Copilot, and Llama) to that of prosthodontic residents in the USA on the National Prosthodontic Resident Examination (NPRE) from 2011 to 2023.Materials and methods: NPRE exam files and answer keys were obtained from the American College of Prosthodontists (ACP). AI-generated responses were collected using standardized prompts that requested only letter answer choices. Each chatbot's first response was recorded and compared to the official exam key. Performance was evaluated as the percentage of correct responses, and results were compared to the average scores of human participants. Statistical analysis included repeated measures ANOVA and Bonferroni post-hoc comparisons.Results: Statistically significant differences were found between the different groups (P < .001). ChatGPT-3.5 achieved the highest scores, followed by Claude 3 and Llama, while Copilot performed significantly worse than residents. Other chatbots demonstrated performance levels comparable to human participants, but with notable variability across AI models. The findings suggest that AI chatbots, particularly ChatGPT-3.5, can perform at or above the level of prosthodontic residents on standardized examinations. However, differences in chatbot capabilities, training data, and inconsistencies in performance raise concerns about reliability. While AI has potential as a supplementary learning tool, its use should be guided by critical evaluation.Conclusions: AI chatbots demonstrate adequate performance on specialized academic exams, but variability across models highlights the need for further assessment before integration into dental education and professional practice.","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"604-608"},"PeriodicalIF":1.8,"publicationDate":"2026-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145411321","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 Total Occlusal Convergence Angle and Rounded Preparations on the Marginal and Internal Fit of Incisor Monolithic Zirconia Crowns. 全咬合角和圆形预备对切牙单片氧化锆冠边缘和内贴合的影响。

IF 1.8

The International journal of prosthodontics Pub Date : 2026-09-25 DOI: 10.11607/ijp.9410

Zeynep Özkurt Kayahan, Markus B Blatz, Yunus Emre Özden, Akanay Çopuroğlu, Esra Silahtar, Ender Kazazoğlu

{"title":"Effect of Total Occlusal Convergence Angle and Rounded Preparations on the Marginal and Internal Fit of Incisor Monolithic Zirconia Crowns.","authors":"Zeynep Özkurt Kayahan, Markus B Blatz, Yunus Emre Özden, Akanay Çopuroğlu, Esra Silahtar, Ender Kazazoğlu","doi":"10.11607/ijp.9410","DOIUrl":"10.11607/ijp.9410","url":null,"abstract":"Purpose: To evaluate the marginal and internal fit of anterior monolithic zirconia crowns fabricated over preparations with different total occlusal convergence (TOC) angles with and without a rounded incisal design.Materials and methods: Crown preparations of 14 maxillary central incisors were digitally designed and fabricated using photosensitive resin. The crowns were designed with axial wall inclinations of -8, -4, 0, 8, 12, 16, and 22 degrees with and without rounded incisal corners and a 1-mm-wide chamfer-type finish line. Monolithic zirconia crowns (n = 10) were milled and assessed for fit using the dual-scan technique using an intraoral scanner. The STL files were analyzed in Geomagic Control X, measuring fit at 100, 150, and 175 points on the incisal, axial, and marginal areas, respectively. Data normality was tested (Shapiro-Wilk), and TOC angle groups were compared using one-way ANOVA, Levene test, Tukey HSD, and independent samples t tests (P < .05).Results: TOC angle groups showed statistically significantly differences (P < .001). The 22-degree preparation had the lowest marginal discrepancies (36 ± 5 μm rounded, 61 ± 5 μm nonrounded), while -8 degrees had the highest (117 ± 9 μm rounded, 147 ± 30 μm nonrounded). Axial discrepancies were lowest at 22 degrees (77 ± 14 μm) and highest at -8 degrees (208 ± 52 μm) in nonrounded samples (P < .001). The smallest incisal discrepancy was found in 22 degrees (95 ± 13 μm), while the largest (163 ± 31 μm) was at -4 degrees in the nonrounded groups (P < .001).Conclusions: TOC angle and rounded preparations have a significant impact on the fit of CAD/CAM-milled monolithic zirconia crowns. Rounded incisal corners and preparations with higher TOC angles increased marginal and internal adaptation of the crowns.","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"638-646"},"PeriodicalIF":1.8,"publicationDate":"2026-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145907153","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

Impact of Sintering Protocol on the Mechanical Properties of Hydrothermally Aged High- Translucent Zirconia Materials. 烧结工艺对水热老化高半透明氧化锆材料力学性能的影响。

IF 1.8

The International journal of prosthodontics Pub Date : 2026-09-25 DOI: 10.11607/ijp.9408

Secil Ozkan Ata, Sevgi Cetintas, Canan Akay, Emre Mumcu

{"title":"Impact of Sintering Protocol on the Mechanical Properties of Hydrothermally Aged High- Translucent Zirconia Materials.","authors":"Secil Ozkan Ata, Sevgi Cetintas, Canan Akay, Emre Mumcu","doi":"10.11607/ijp.9408","DOIUrl":"10.11607/ijp.9408","url":null,"abstract":"Purpose: To evaluate the effect of high-speed and conventional sintering on the biaxial flexural strength of high-translucent zirconia materials before and after artificial aging (low-temperature degradation [LTD]).Materials and methods: A total of 156 zirconia specimens (disk shaped, 12-mm diameter × 1.2-mm thickness) were prepared from three materials (4Y-TZP: Nacera DD-cube-ML-HT; 5Y-TZP: Nacera DD-cube- X2ML-HT; 6Y-TZP: Nacera Pearl-Q3-ML-HT; n = 52 each). Specimens were sintered using either a high-speed sintering protocol (1,580°C; n = 26) or a conventional sintering protocol (1,450°C; n = 26). Specimens were artificially aged (LTD; 10 hours, 134°C; n = 13) or not aged (control group). Microhardness and biaxial flexural strength were measured, and phase composition was characterized using x-ray diffraction (XRD) with Rietveld refinement. ANOVA, post-hoc Tukey, and Shapiro-Wilk tests were performed (P < .05). The survival probability was determined using Weibull analysis.Results: Conventional sintering of 4Y-TZP and 5Y-TZP zirconia resulted in similar mechanical characteristics after LTD. The Weibull modulus of high-speed sintered zirconia specimens decreased following LTD. Among the groups, 4Y-TZP specimens exhibited the highest stability and strength, whereas 6Y-TZP showed the lowest performance.Conclusions: Speed sintering and LTD can lead to degradation of the physical and mechanical properties of zirconia, potentially compromising its durability in clinical applications. Conventional sintering preserved higher flexural strength and phase stability compared to high-speed sintering under LTD conditions and therefore appears more favorable for long-term performance.","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"665-675"},"PeriodicalIF":1.8,"publicationDate":"2026-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145215122","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

Association Between Edentulism and Chronic Disease in a Brazilian Older Adult Population. 巴西老年人口中无牙症与慢性疾病之间的关系

IF 1.8

The International journal of prosthodontics Pub Date : 2026-09-25 DOI: 10.11607/ijp.9493

Ana Estéfanny Alves Cabral, Flávio Pereira Dos Santos Filho, Mariella Agostinho Gonçalves Lourenço, Bianca Souto de Medeiros Santos, Mateus Guedes Carvalho, Rafael Barroso Pazinatto, Fabíola Pessôa Pereira Leite, Laércio Almeida de Melo

{"title":"Association Between Edentulism and Chronic Disease in a Brazilian Older Adult Population.","authors":"Ana Estéfanny Alves Cabral, Flávio Pereira Dos Santos Filho, Mariella Agostinho Gonçalves Lourenço, Bianca Souto de Medeiros Santos, Mateus Guedes Carvalho, Rafael Barroso Pazinatto, Fabíola Pessôa Pereira Leite, Laércio Almeida de Melo","doi":"10.11607/ijp.9493","DOIUrl":"10.11607/ijp.9493","url":null,"abstract":"Purpose: To identify the chronic diseases present in Brazilian older adults that are associated with total edentulism.Materials and methods: This study is characterized as cross-sectional and population based. The database from the last National Health Survey (NHS) in Brazil was used to conduct the study. The study population consisted of adults aged 60 years or older. The chronic diseases analyzed were hypertension, diabetes, high cholesterol, heart disease, stroke, asthma, rheumatism, back problems, musculoskeletal disorders, depression, schizophrenia, chronic lung diseases, cancer, and kidney failure. Chi-square test was initially used in the data analysis. Then adjusted prevalence ratios were estimated using Poisson regression with robust variance, including all covariates in the model to identify chronic diseases associated with total edentulism.Results: A total of 22,728 older adults were included. The prevalence of completely edentulous older adults was 31.7%. The most prevalent chronic diseases in these completely edentulous older adults were hypertension (55.5%), back problems (29.1%), and high cholesterol (26.6%). Total edentulism in older adults was associated with being female (P < .001), older age (P < .001), illiteracy (P < .001), lack of health insurance (P < .001), hypertension (P < .001), diabetes (P = .004), and cerebrovascular accident (CVA; P < .001).Conclusions: Total edentulism in older adults is associated with worse socioeconomic conditions and with individuals who have hypertension, diabetes, and have suffered a stroke.","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"609-615"},"PeriodicalIF":1.8,"publicationDate":"2026-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145215080","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

Diagnostic Accuracy of Different Evaluation Approaches for the 5Ts Screener in Temporomandibular Disorder Assessment. 不同评估方法对5Ts筛查在颞下颌疾病评估中的诊断准确性。

IF 1.8

The International journal of prosthodontics Pub Date : 2026-09-25 DOI: 10.11607/ijp.9481

Ni Luh Dewi, Adrian Ujin Yap, Wita Anggraini, Carolina Marpaung

{"title":"Diagnostic Accuracy of Different Evaluation Approaches for the 5Ts Screener in Temporomandibular Disorder Assessment.","authors":"Ni Luh Dewi, Adrian Ujin Yap, Wita Anggraini, Carolina Marpaung","doi":"10.11607/ijp.9481","DOIUrl":"10.11607/ijp.9481","url":null,"abstract":"Purpose: To compare the diagnostic performance of different Five TMD Symptoms (5Ts) evaluation approaches and to establish the most accurate method and cut-off point (CP) in non-clinical populations.Materials and methods: A cross-sectional study was conducted with 278 participants (mean age 22.17 years [SD 1.82]) recruited from a large private university. Participants completed a survey including demographics, the 5Ts with yes/no responses, and 5Ts with frequency options (5Ts-F). Temporomandibular disorder (TMD) diagnoses were established using the DC/TMD protocol and algorithms. Diagnostic accuracy was analyzed using the area under the receiver operating characteristic (AUC) curves, sensitivity, specificity, and predictive values for four approaches: A1 (5Ts, conventional), A2 (5Ts, CP 1.5), A3 (5Ts-F, CP 1.5), and A4 (5Ts-F, CP 2.5).Results: Among participants, 68.7% received a DC/TMD diagnosis. A1 identified 72.3% as TMD-positive, showing AUCs of 0.94 for all TMDs, PT, and IT. A2 to A4 had AUCs below 0.9. A1's sensitivity/specificity were 100%/88.5%. When items were analyzed separately, A1's AUCs increased to 0.99 for PT and 0.95 for IT.Conclusions: The conventional 5Ts assessment method was the most accurate, and total scores of ≥ 1 can identify the presence of TMDs in non-clinical samples when points are assigned for yes/no responses.","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"597-603"},"PeriodicalIF":1.8,"publicationDate":"2026-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146260590","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 Technique for Denture Fabrication Using 3D-Printed Duplicate Removable Partial Dentures. 一种3d打印可移动局部义齿制造技术。

IF 1.8

The International journal of prosthodontics Pub Date : 2026-09-25 DOI: 10.11607/ijp.9423

Takayuki Ohtake, Takeru Kondo, Sabina Bhattarai, Takayuki Harata, Hiroshi Egusa

引用次数: 0

Effect of Firing Cycles on the Optical Performance of Zirconia-Reinforced Lithium Disilicate Ceramics: A Comparison of Translucency and Color Stability Parameters. 烧成周期对氧化锆增强二硅酸锂陶瓷光学性能的影响：半透明性和颜色稳定性参数的比较。

IF 1.8

The International journal of prosthodontics Pub Date : 2026-09-25 DOI: 10.11607/ijp.9401

Ziad N Al-Dwairi, Nadin Al-Haj Husain

{"title":"Effect of Firing Cycles on the Optical Performance of Zirconia-Reinforced Lithium Disilicate Ceramics: A Comparison of Translucency and Color Stability Parameters.","authors":"Ziad N Al-Dwairi, Nadin Al-Haj Husain","doi":"10.11607/ijp.9401","DOIUrl":"10.11607/ijp.9401","url":null,"abstract":"Purpose: To evaluate the translucency parameters (TP) and color stability (DE) of VITA Ambria's A1 shade in high translucent (HT) and translucent (H) zirconia-reinforced lithium disilicate after three firing cycles compared to lithium disilicate glass-ceramics.Materials and methods: In total, 45 disk-shaped specimens (1.2-mm thickness) were allocated to three groups: G1-VITA Ambria translucent (VAT), G2-VITA Ambria high translucent (VAHT), and G3-IPS e.max Press (Ivoclar). Each group underwent one, three, or five firing cycles. TP and ΔE were measured using a spectrophotometer. Two-way ANOVA and post-hoc Tukey tests analyzed the effects of firing cycles and ceramic type (P < .05).Results: Both ceramic type and firing cycles significantly affected TP and ΔE. Multiple firing cycles led to a greater reduction in TP for IPS e.max Press compared to VITA Ambria. VAHT demonstrated superior translucency compared to VAT and IPS e.max Press.Conclusions: Multiple firing cycles caused alterations in the translucency and color stability of the lithium disilicate and zirconia-reinforced lithium disilicate glass-ceramic materials tested. Heat-pressed zirconiareinforced lithium disilicate exhibited the best optical performance, suggesting a potential advantage in clinical situations requiring repeated firings. However, further clinical studies are necessary to evaluate its long-term optical performance.","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"625-630"},"PeriodicalIF":1.8,"publicationDate":"2026-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144692907","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