Journal of Advanced Prosthodontics最新文献

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Effect of position within a blank and thermo-mechanical aging on fracture force and failure mode of strength-gradient multilayer zirconia crowns. 空白位置和热机械老化对强度梯度多层氧化锆冠断裂力和破坏模式的影响
IF 2.5 3区 医学
Journal of Advanced Prosthodontics Pub Date : 2025-12-01 Epub Date: 2025-12-15 DOI: 10.4047/jap.2025.17.6.354
Surangkana Imaemporn, Onauma Angwaravong, Thidarat Angwarawong
{"title":"Effect of position within a blank and thermo-mechanical aging on fracture force and failure mode of strength-gradient multilayer zirconia crowns.","authors":"Surangkana Imaemporn, Onauma Angwaravong, Thidarat Angwarawong","doi":"10.4047/jap.2025.17.6.354","DOIUrl":"10.4047/jap.2025.17.6.354","url":null,"abstract":"<p><strong>Purpose: </strong>This study aimed to investigate the effects of blank position and thermo-mechanical aging on the fracture force of strength-gradient multilayer (SGM) zirconia crowns.</p><p><strong>Materials and methods: </strong>Eighty premolar SGM zirconia crowns (KATANA™ Zirconia YML) were assigned to eight groups (n = 10), based on four blank positions (1, 2, 3, and 4 mm below the top edge) and two conditions (with and without thermo-mechanical aging). Aging simulated five years of clinical service through 6,000 thermocycles (5℃ - 55℃) and cyclic fatigue (50 N, 1.2 Hz, 1,200,000 cycles). Fracture force was measured using a universal testing machine. Failure modes and fractographic features were examined. Data were assessed using two-way ANOVA, Bonferroni post hoc tests, independent t-tests, and Spearman correlation (<i>P</i> < .05).</p><p><strong>Results: </strong>Fracture force was significantly influenced by both blank position and thermo-mechanical aging. Crowns from the 1 - 2 mm regions demonstrated significantly lower fracture force and more severe failure modes (Types I - V), while those from the 3 - 4 mm regions showed significantly higher fracture force and milder modes (Types I - III). Thermo-mechanical aging reduced fracture force in all groups, supported by fractographic analysis. A strong negative correlation existed between position depth and failure severity.</p><p><strong>Conclusion: </strong>Both blank position and thermo-mechanical aging significantly affected fracture force and failure behavior. Lower blank positions provide better mechanical performance and are recommended for posterior restorations. Conversely, upper blank positions-offering improved translucency-are suitable for anterior restorations where esthetics are prioritized. These findings offer clinically relevant guidance for optimizing strength and appearance in zirconia crown fabrication.</p>","PeriodicalId":51291,"journal":{"name":"Journal of Advanced Prosthodontics","volume":"17 6","pages":"354-366"},"PeriodicalIF":2.5,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12798326/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145971581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluation of relative deviations in virtual articulators for simulating occlusal contacts at increased vertical dimensions. 在增加的垂直尺寸上模拟咬合接触的虚拟关节器的相对偏差评估。
IF 2.5 3区 医学
Journal of Advanced Prosthodontics Pub Date : 2025-12-01 Epub Date: 2025-12-15 DOI: 10.4047/jap.2025.17.6.339
Elvan Biren, Sina Saygılı, Berk Bilgen, Tonguç Sülün
{"title":"Evaluation of relative deviations in virtual articulators for simulating occlusal contacts at increased vertical dimensions.","authors":"Elvan Biren, Sina Saygılı, Berk Bilgen, Tonguç Sülün","doi":"10.4047/jap.2025.17.6.339","DOIUrl":"10.4047/jap.2025.17.6.339","url":null,"abstract":"<p><strong>Purpose: </strong>Accurate planning for occlusal vertical dimension (OVD) increase is crucial for prosthodontic success. This study evaluates the effects of different OVD increase amounts (2 mm or 5 mm), methods (articulator-based or intraoral) and virtual facebow use on occlusal contacts.</p><p><strong>Materials and methods: </strong>Twenty-one individuals were initially recruited; three dropped out, leaving 18 participants. Digital impressions, bite records in maximum intercuspal position (MIP) and facial scans were obtained. Each participant received eight occlusal splints, varying by OVD increase method, amount and facebow use. Centric relation contacts and MIP were recorded using articulator paper and a scannable bite material. These scans were superimposed with Group D (2 mm intraoral increase without facebow) serving as the reference baseline. Deviations in the X (lateral), Y (anteroposterior) and Z (superoinferior) directions were analyzed using non-parametric tests with Bonferroni correction for pairwise comparisons.</p><p><strong>Results: </strong>No significant deviations were observed in the X-direction. However, significant deviations occurred in the Y and Z-directions in certain groups, particularly with a 5 mm intraoral increase. Effect size analysis indicated that most Y-direction differences were minor, whereas Z-direction deviations at higher OVD increases were more clinically relevant.</p><p><strong>Conclusion: </strong>Regardless of the method, increasing the OVD by 2 or 5 mm and using a virtual facebow did not significantly affect the number of occlusal contacts. However, spatial deviations of contacts were detected, with articulator-based 5 mm increase producing fewer deviations than intraoral methods. Within the limitations of this study, the virtual facebow did not substantially reduce deviations.</p>","PeriodicalId":51291,"journal":{"name":"Journal of Advanced Prosthodontics","volume":"17 6","pages":"339-353"},"PeriodicalIF":2.5,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12798328/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145971554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Erratum - Influence of camera position, implant angulation and implant reference on the accuracy of complete arch implant recordings with photogrammetry. 照相机位置、种植体角度和种植体参考对用摄影测量法记录全弓种植体准确性的影响。
IF 2.5 3区 医学
Journal of Advanced Prosthodontics Pub Date : 2025-12-01 Epub Date: 2025-12-15 DOI: 10.4047/jap.2025.17.6.406
{"title":"Erratum - Influence of camera position, implant angulation and implant reference on the accuracy of complete arch implant recordings with photogrammetry.","authors":"","doi":"10.4047/jap.2025.17.6.406","DOIUrl":"https://doi.org/10.4047/jap.2025.17.6.406","url":null,"abstract":"<p><p>[This corrects the article on p. 292 in vol. 17, PMID: 41180326.].</p>","PeriodicalId":51291,"journal":{"name":"Journal of Advanced Prosthodontics","volume":"17 6","pages":"406"},"PeriodicalIF":2.5,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12798301/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145971590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of the scan body alignment process on the accuracy of virtual definitive implant casts: a pilot study. 扫描体对准过程对虚拟确定种植体铸型准确性的影响:一项初步研究。
IF 2.5 3区 医学
Journal of Advanced Prosthodontics Pub Date : 2025-10-01 Epub Date: 2025-10-20 DOI: 10.4047/jap.2025.17.5.279
Jaime Orejas Pérez, Cristina Andreu Vázquez, Ana Suárez, Andrea Santamaría Laorden
{"title":"Effect of the scan body alignment process on the accuracy of virtual definitive implant casts: a pilot study.","authors":"Jaime Orejas Pérez, Cristina Andreu Vázquez, Ana Suárez, Andrea Santamaría Laorden","doi":"10.4047/jap.2025.17.5.279","DOIUrl":"10.4047/jap.2025.17.5.279","url":null,"abstract":"<p><strong>Purpose: </strong>The aim of the present study was to evaluate whether the accuracy of digital definitive implant casts is affected by both the process of best fit (BF) alignment of the scan bodies (SBs) with the CAD library and the type of scanner used.</p><p><strong>Materials and methods: </strong>Scans of the upper and lower arches of a totally edentulous patient, each with eight implants, were performed using the Trios-3 (T) and True-Definition (TD) intraoral scanners and the Identica-Light extraoral scanner (EO) for casts. Two types of alignment of the SB with the CAD implant library were performed, using either 3/3 or 1/3 of its mesh. Twelve virtual definitive implant casts were generated, each with a designed prosthetic bar. Analysis included absolute differences in 28 inter-implant distances and 7 relative angles of the bar implant abutments.</p><p><strong>Results: </strong>Descriptive statistical analysis was carried out, including the calculation of means ± standard deviations and maximum and minimum values for both distances and angles.</p><p><strong>Conclusion: </strong>In conclusion, the accuracy of digital definitive casts with multiple implants was influenced by both the amount of mesh selected in the SBs during the BF alignment with the CAD library and the optical impression system used.</p>","PeriodicalId":51291,"journal":{"name":"Journal of Advanced Prosthodontics","volume":"17 5","pages":"279-291"},"PeriodicalIF":2.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12575066/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145433032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fracture strength and marginal gap comparisons of monolayered and multilayered monolithic zirconia crowns with various milling depths. 不同铣削深度下单层和多层整体氧化锆冠的断裂强度和边缘间隙比较。
IF 2.5 3区 医学
Journal of Advanced Prosthodontics Pub Date : 2025-10-01 Epub Date: 2025-10-20 DOI: 10.4047/jap.2025.17.5.304
Gökçe Zengin, Burcu Kanat-Ertürk, Mine Dündar-Çömlekoğlu
{"title":"Fracture strength and marginal gap comparisons of monolayered and multilayered monolithic zirconia crowns with various milling depths.","authors":"Gökçe Zengin, Burcu Kanat-Ertürk, Mine Dündar-Çömlekoğlu","doi":"10.4047/jap.2025.17.5.304","DOIUrl":"10.4047/jap.2025.17.5.304","url":null,"abstract":"<p><strong>Purpose: </strong>This study aimed to compare the marginal adaptation and fracture strength of monolayered and multilayered monolithic zirconia crowns fabricated at three distinct milling depths.</p><p><strong>Materials and methods: </strong>Eighty-four epoxy resin dies of prepared premolars were fabricated. Crowns were designed in software and milled from two monolayered zirconia materials [3Y-TZP (VITA YZ HT)(3-VYZ) and 4Y-TZP (Priti<sup>®</sup>multidisc ZrO<sub>2</sub> Extra Translucent)(4-ET)], three multilayered zirconia materials [3/5Y-TZP (IPS e.max ZirCAD Prime)(3/5-ZP), 4/5Y-TZP (IPS e.max ZirCAD Prime Esthetic)(4/5-ZPE), and 4/5Y-TZP (Priti<sup>®</sup>multidisc ZrO<sub>2</sub> Multi Translucent Plus)(4/5-MTP)], at three milling depths [above (A), center (C), below (B)], and a zirconia-reinforced lithium silicate glass ceramic block (VITA Suprinity)(VS) (n = 7). After sintering and glazing, marginal gaps (MG) were measured using silicone replica technique. Crowns were cemented with dualcure resin (SpeedCEM Plus, Ivoclar Vivadent), subjected to 5000 thermal cycles. Fracture strength (FS) test was performed perpendicularly to occlusal surface at 1 mm/min. Data were analyzed (SPSS 26, one-way ANOVA, Tukey post-hoc tests, <i>P</i> = .05), and fracture types were classified. SEM analysis was performed on representative specimens.</p><p><strong>Results: </strong>MG differences among groups were insignificant (<i>P</i> > .05). The highest FS values were observed in 3-VYZ (1587.14 ± 228.26 N), 3/5ZP-B (1537.28 ± 268.81 N), and 4-ET (1364.86 ± 196.98 N) (<i>P</i> > .05). The lowest FS values were found in VS (483.86 ± 47.10 N)(<i>P</i> > .05). B-positioned multilayered crowns exhibited numerically higher FS than A or C positions.</p><p><strong>Conclusion: </strong>Monolayered (3Y-TZP and 4Y-TZP) or multilayered 3/5Y-TZP zirconia milled from below layer may be preferred for posterior region, whereas multilayered 3/5Y-TZP milled from upper layer and all configurations of multilayered 4/5Y-TZP may be more suitable for anterior.</p>","PeriodicalId":51291,"journal":{"name":"Journal of Advanced Prosthodontics","volume":"17 5","pages":"304-314"},"PeriodicalIF":2.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12575065/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145433056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Influence of camera position, implant angulation and implant reference on the accuracy of complete arch implant recordings with photogrammetry. 相机位置、种植体角度和种植体参考对全弓种植体摄影测量记录精度的影响。
IF 2.5 3区 医学
Journal of Advanced Prosthodontics Pub Date : 2025-10-01 Epub Date: 2025-10-20 DOI: 10.4047/jap.2025.17.5.292
Meriem Benabdallah-M'Rabat, Andrea Santamaria-Laorden, Sabina Francesca Bertuol-Gessi, Alicia Martínez-Marugán, Ana Suarez-García, Israel John Thuissard, Jaime Orejas-Pérez
{"title":"Influence of camera position, implant angulation and implant reference on the accuracy of complete arch implant recordings with photogrammetry.","authors":"Meriem Benabdallah-M'Rabat, Andrea Santamaria-Laorden, Sabina Francesca Bertuol-Gessi, Alicia Martínez-Marugán, Ana Suarez-García, Israel John Thuissard, Jaime Orejas-Pérez","doi":"10.4047/jap.2025.17.5.292","DOIUrl":"10.4047/jap.2025.17.5.292","url":null,"abstract":"<p><strong>Purpose: </strong>The aim of the present study was to assess the influence of various implant angulations, camera positions and number of implant references on the accuracy of a photogrammetry device for complete arch implant prostheses.</p><p><strong>Materials and methods: </strong>2 edentulous models, one with 6 parallel implants (PM) and other with 6 angled implants (AM), underwent digitalization with a coordinate measuring machine (CMM) to establish a reference standard. Both models underwent 20 impressions with 2 different camera positions and 3 different implant references, with a total of 240 impressions. Euclidean linear and angular measurements were obtained on the reference cast and each experimental scan and compared. Absolute (n) and relative frequencies (%) of true and precise measurements at 95% confidence intervals (CI) were calculated. Chi-squared tests were used to assess differences in trueness and precision between these factors.</p><p><strong>Results: </strong>3660 distances and 1440 angles were analyzed for trueness. The absolute difference was 54 ± 46 µm and 0.341 ± 0.301°. Precision was 18 ± 23 µm from 68400 measured distances and 0.048 ± 0.074° for the 22800 angulations measured. Statistically significant differences (<i>P</i> < .05) were identified between PM and Am, A1 and A2 and number of references in both distances and angulations for trueness and precision.</p><p><strong>Conclusion: </strong>Implant angulations, camera positions and number of implant references used affected the precision and trueness of Precise Implant Capture (PIC) system. However, these differences did not show clinically relevant values.</p>","PeriodicalId":51291,"journal":{"name":"Journal of Advanced Prosthodontics","volume":"17 5","pages":"292-303"},"PeriodicalIF":2.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12575067/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145433044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Osseointegration properties of niobia-modified yttria-stabilized zirconia implant surface: an in vivo study. 铌修饰氧化钇稳定氧化锆种植体表面的骨整合特性:体内研究。
IF 2.5 3区 医学
Journal of Advanced Prosthodontics Pub Date : 2025-10-01 Epub Date: 2025-10-20 DOI: 10.4047/jap.2025.17.5.315
Ji-Hyun Park, Le Na Lau, Young Suk Kang, In-Sung Luke Yeo
{"title":"Osseointegration properties of niobia-modified yttria-stabilized zirconia implant surface: an <i>in vivo</i> study.","authors":"Ji-Hyun Park, Le Na Lau, Young Suk Kang, In-Sung Luke Yeo","doi":"10.4047/jap.2025.17.5.315","DOIUrl":"10.4047/jap.2025.17.5.315","url":null,"abstract":"<p><strong>Purpose: </strong>This study aimed to assess the osseointegration effects of niobia-modified yttria-stabilized tetragonal zirconia ((Y,Nb)-TZP) implants, compared to titanium implants and 3 mol% yttria-stabilized tetragonal zirconia (3Y-TZP) implants in a rabbit tibia model.</p><p><strong>Materials and methods: </strong>Sandblasted (Y,Nb)-TZP implants (YNb), sandblasted and acid-etched titanium implants (SLA), and smooth-surface 3D-printed 3Y-TZP implants (3Y) were prepared. Surface characteristics of the specimens were evaluated using scanning electron microscopy and confocal laser scanning microscopy. Implants were inserted into the tibiae of 16 rabbits, with eight rabbits euthanized at each time point (2 and 6 weeks). To estimate periodic bone remodeling, tetracycline and xylenol orange were administered to the rabbits euthanized at 6 weeks. Undecalcified specimens were prepared to measure the periodic bone remodeling ratio (PBR), bone-to-implant contact (BIC) and bone area (BA). Data analysis was conducted using one-way ANOVA with Bonferroni post hoc analysis and the Wilcoxon signed-rank test at a significance level of 0.05.</p><p><strong>Results: </strong>At both the 2-week and 6-week intervals, YNb group exhibited significantly higher BIC values than the SLA and 3Y groups. No significant differences (<i>P</i> > .05) were found in PBR and BA across all comparisons.</p><p><strong>Conclusion: </strong>Sandblasted (Y,Nb)-TZP implants indicated superior osseointegration in comparison to SLA titanium and smooth-surface 3D-printed 3Y-TZP implants. The enhanced osseointegration observed in this study supports the clinical potential of (Y,Nb)-TZP as a next-generation zirconia implant material.</p>","PeriodicalId":51291,"journal":{"name":"Journal of Advanced Prosthodontics","volume":"17 5","pages":"315-327"},"PeriodicalIF":2.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12575068/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145433145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comparison of the accuracy of removable partial denture frameworks fabricated using conventional and digital impressions: a clinical study. 使用传统印模和数字印模制作可移动局部义齿框架的准确性比较:一项临床研究。
IF 2.5 3区 医学
Journal of Advanced Prosthodontics Pub Date : 2025-10-01 Epub Date: 2025-10-20 DOI: 10.4047/jap.2025.17.5.269
Myeong Ah Yoon, Minji Sun, Jeongho Jeon, You-Jung Kang, Jee Hwan Kim
{"title":"Comparison of the accuracy of removable partial denture frameworks fabricated using conventional and digital impressions: a clinical study.","authors":"Myeong Ah Yoon, Minji Sun, Jeongho Jeon, You-Jung Kang, Jee Hwan Kim","doi":"10.4047/jap.2025.17.5.269","DOIUrl":"10.4047/jap.2025.17.5.269","url":null,"abstract":"<p><strong>Purpose: </strong>Removable partial dentures (RPDs) require metal frameworks for support, stability, and retention. Conventional impression methods are time-consuming and may introduce inaccuracies that affect framework fit. Intraoral scanning (IOS) offers a digital alternative that may improve accuracy and efficiency; however, few studies have quantitatively compared frameworks fabricated using IOS data with those fabricated using conventional methods. This study aimed to compare the accuracy of RPD frameworks fabricated using conventional and IOS-based methods.</p><p><strong>Materials and methods: </strong>This study included 15 arches from 13 patients requiring RPDs. Each arch received two metal frameworks, one fabricated using the conventional impression method (CON group) and the other using IOS (IOS group). Qualitative evaluations included visual inspection and pressing with a plugger, whereas quantitative evaluations were performed using three-dimensional superimposition and gap measurements at the rest-seat areas. Paired t-tests were used to compare the accuracy, and two-way analysis of variance was used to evaluate the interaction between the fabrication method and tooth position.</p><p><strong>Results: </strong>All frameworks met the qualitative evaluation criteria. In the quantitative evaluation, the IOS group exhibited a significantly smaller mean gap (201 ± 78 µm) than the CON group (239 ± 83 µm) (<i>P</i> = .015). Furthermore, the IOS group demonstrated significantly greater accuracy, particularly at the terminal abutments of distal-extension RPDs.</p><p><strong>Conclusion: </strong>Clinically acceptable RPD framework accuracy was achieved in both groups. However, accuracy was significantly better in the IOS group, especially at the terminal abutments of distal-extension RPDs.</p>","PeriodicalId":51291,"journal":{"name":"Journal of Advanced Prosthodontics","volume":"17 5","pages":"269-278"},"PeriodicalIF":2.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12575064/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145433020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comparing impression techniques in the prosthodontic treatment for edentulous patients: a 3D finite element analysis. 比较印模技术在无牙患者修复治疗中的应用:三维有限元分析。
IF 2.5 3区 医学
Journal of Advanced Prosthodontics Pub Date : 2025-10-01 Epub Date: 2025-10-20 DOI: 10.4047/jap.2025.17.5.328
Mary Delia Zoleta Bondoc, Mi-El Kim, Young-Jun Lim, Myung-Joo Kim, Ho-Beom Kwon
{"title":"Comparing impression techniques in the prosthodontic treatment for edentulous patients: a 3D finite element analysis.","authors":"Mary Delia Zoleta Bondoc, Mi-El Kim, Young-Jun Lim, Myung-Joo Kim, Ho-Beom Kwon","doi":"10.4047/jap.2025.17.5.328","DOIUrl":"10.4047/jap.2025.17.5.328","url":null,"abstract":"<p><strong>Purpose: </strong>The biomechanical advantage of selective pressure impressions over mucocompressive techniques remains unclear. This study aimed to determine whether selective pressure techniques offer substantial biomechanical advantage over mucocompressive impressions using clinical computer simulation.</p><p><strong>Materials and methods: </strong>Two models were analyzed: Model C, with mucocompressive impression tray, and Model S, with selective pressure impression tray with 10-mm diameter circular relief in the midline. Each model included the tray, polyvinyl siloxane (PVS), mucosa, cortical, and cancellous bone. Seven locations were designated, from which the results were analyzed. With a vertical load of 49 N on the palatal area, pressure, von Mises stress, and displacement were evaluated. Statistical analysis was performed using paired-samples t-test and effect size estimation (Cohen's d).</p><p><strong>Results: </strong>Both models generated mucosal displacement and stress transmission to the underlying structures upon load application. In Location 3, where the relief was placed, Model S exhibited lower pressure, stress, and displacement than Model C, indicating localized force reduction. Conversely, other locations exhibited higher values in Model S than in Model C. Low stress in bone for both trays suggested that tray design had minimal effect on bone. All variations demonstrated small effect sizes (d ≤ 0.2), despite statistical significance (<i>P</i> < .007).</p><p><strong>Conclusion: </strong>Selective pressure trays modified tissue loading locally at the relief site; however, these did not seem to provide a substantial biomechanical advantage, particularly on bone. Their clinical relevance remains limited and needs further supporting evidence.</p>","PeriodicalId":51291,"journal":{"name":"Journal of Advanced Prosthodontics","volume":"17 5","pages":"328-338"},"PeriodicalIF":2.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12575063/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145433006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Health of peri-implant soft tissues adjacent to glazed or polished monolithic zirconia: a randomized clinical trial. 釉面或抛光整体氧化锆相邻种植体周围软组织的健康:一项随机临床试验
IF 2.5 3区 医学
Journal of Advanced Prosthodontics Pub Date : 2025-10-01 Epub Date: 2025-10-20 DOI: 10.4047/jap.2025.17.5.259
Douglas Blum Segalla, Eduardo Rolim Teixeira, Rosemary Sadami Arai Shinkai
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