The International journal of prosthodontics最新文献

{"title":"Examining Circumferential Bone Stability around Narrow-Diameter Implants Retaining Mandibular Overdentures: A Three-Year Longitudinal Analysis.","authors":"Victória Klumb, Salma Rose Buchnveitz Salybi, Lucas Jardim da Silva, Laura Lourenço Morel, Anna Paula da Rosa Possebon, Alessandra Julie Schuster, Luciana de Rezende Pinto, Fernanda Faot","doi":"10.11607/ijp.9432","DOIUrl":"https://doi.org/10.11607/ijp.9432","url":null,"abstract":"<p><strong>Purpose: </strong>This longitudinal study investigated the relationship between secondary stability and circumferential bone level of narrow diameter implants to retain mandibular overdentures (MO) after 1 and 3 years.</p><p><strong>Materials and methods: </strong>Thirty patients (19 men, 11 women) with a mean age of 67.5 were monitored by the implant stability coefficient (ISQ) and the vertical (VBL) and horizontal (HBL) bone level assessed by CBCT were measured on the 4 implant faces. Two-way ANOVA with repeated measures followed by Sidak's post-hoc test was used to compare ISQ, VBL and HBL over time and between faces.</p><p><strong>Results: </strong>The linearity and association between ISQ and VBL and HBL were analyzed by Spearmann's correlation and linear regression tests. ISQ, VBL and HBL did not differ significantly over time (p≥0.05). The comparison between the faces showed that only VBL presented significant differences (p≤0.05) at 1 and 3 years between the following faces: distal and mesial; lingual and mesial; and mesial and buccal. A positive and moderate correlation was observed between ISQ and HBL of the lingual (r=0.502; p<0.01) and mesial (r=0.536; p<0.01) faces at 1 year. The VBL of the mesial face, HBL of the mesial and lingual faces and the overall HBL at 1 year were associated with the ISQ values obtained on these faces.</p><p><strong>Conclusion: </strong>VBL and HBL remained stable across all implant faces over the 3-year follow-up period. Nevertheless, the lingual face demonstrated the greatest VBL, whereas the mesial face exhibited the highest stability, with minimal VBL observed in the third year. Early bone remodeling, particularly during the first year of OM use, may affect implant stability and appears to be associated with HBL changes on the lingual and mesial faces.</p>","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"1-22"},"PeriodicalIF":1.8,"publicationDate":"2025-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144860038","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}

{"title":"A Technique for Denture Fabrication Using 3D-Printed Duplicated Removable Partial Dentures.","authors":"Takayuki Ohtake, Takeru Kondo, Sabina Bhattarai, Takayuki Harata, Hiroshi Egusa","doi":"10.11607/ijp.9423","DOIUrl":"https://doi.org/10.11607/ijp.9423","url":null,"abstract":"<p><p>Duplicate complete dentures can be used as custom trays and occlusion rims to fabricate biologically harmonious complete dentures. However, no reports have described the use of duplicated removable partial dentures to achieve simultaneous impressions of the alveolar ridge and teeth, along with bite registration. This case report describes the use of 3D-printed duplicated removable partial dentures with removable split custom trays for denture fabrication. This technique can address the challenges associated with adapting to newly fabricated dentures.</p>","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"1-9"},"PeriodicalIF":1.8,"publicationDate":"2025-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144860037","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}

{"title":"Comparison of Conventional and Digital Intraoral Scanning Method of Obtaining Complete Arch Dental Impressions.","authors":"Kunal Bhutada, Krishna Prasad D, Chethan Hegde Hegde, Athma Shetty","doi":"10.11607/ijp.9422","DOIUrl":"https://doi.org/10.11607/ijp.9422","url":null,"abstract":"<p><strong>Purpose: </strong>To compare the accuracy of digital and conventional complete-arch impressions in a clinical setting.</p><p><strong>Materials and methods: </strong>An in-vitro study was first conducted using a full-arch maxillary Nissin Typodont reference model. Three intraoral scanners Dentsply Sirona CEREC Primescan AC, Straumann Virtuo Vivo, and 3Shape TRIOS 3 were compared against conventional vinyl polysiloxane (VPS) impressions. Stereolithography (.stl) files were analyzed using Exocad DentalCAD software, employing Best Fit Alignment and Cut View Analysis at three key regions:• Cusp of maxillary right canine• Palatal cusp of maxillary left second premolar• Mesiobuccal cusp of maxillary right first molar. A secondary clinical evaluation involved 8 participants, each contributing three digital scans and one conventional VPS impression, resulting in a total of 32 samples (4 per participant). All STL files were analyzed using the same protocol. Statistical tests included one-way ANOVA and post hoc Tukey test (P < 0.05).</p><p><strong>Results: </strong>In clinical analysis, Virtuo Vivo showed the lowest discrepancy at the maxillary right canine (0.042 ± 0.015 mm), and TRIOS 3 the highest (0.061 ± 0.020 mm) (P = 0.394). At the left second premolar, TRIOS 3 had the lowest (0.039 ± 0.014 mm) and Primescan the highest (0.059 ± 0.021 mm) (P = 0.790). For the right first molar, Primescan showed the least discrepancy (0.047 ± 0.016 mm) and Virtuo Vivo the highest (0.063 ± 0.022 mm) (P = 0.330). Differences were not statistically significant; digital impressions were comparable in accuracy to conventional methods.</p><p><strong>Conclusions: </strong>Digital impressions are a reliable alternative to conventional impressions, with minimal differences in accuracy. Regional variation highlights the importance of technique and scanner-specific optimization. Ongoing advancements in intraoral scanning technology continue to improve clinical precision.</p>","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"1-20"},"PeriodicalIF":1.8,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144765959","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}

{"title":"Effect of Sintering Speed of Large Laboratory Furnaces on Marginal and Internal Gaps of CAD-CAM Monolithic Zirconia Crowns.","authors":"Ewa Wilkin, Laura Althea Cuschieri, Juliana No-Cortes, Glenn Cassar, David Paul Mifsud, Arthur Rodriguez Gonzalez Cortes","doi":"10.11607/ijp.9431","DOIUrl":"https://doi.org/10.11607/ijp.9431","url":null,"abstract":"<p><strong>Purpose: </strong>High-speed sintering protocols have been used to expedite the production of zirconia crowns. However, information on the impact of different sintering speeds on the marginal and internal crown adaptation is sparse and only available for chairside systems. The aim of this study was to assess the impact of different sintering speed protocols on Sintering Speed on Marginal and Internal Gaps of CAD-CAM Monolithic Zirconia Crowns.</p><p><strong>Material and methods: </strong>This in-vitro study was performed on a total of 45 prefabricated standardized resin tooth preparations for study models. Each preparation received a monolithic zirconia crown designed and milled using a high-end computer-aided design and computer-aided manufacturing (CAD-CAM) system. The crowns were divided in 3 groups of 15 crowns each, according to the sintering protocols available in the system of the laboratory furnace used: conventional (8h), fast (3.5h) or ultra-fast sintering (75 min). Marginal and internal gaps of all crowns were assessed using a high-resolution digital microscope. Statistically significant differences among groups were assessed with the one-way ANOVA test.</p><p><strong>Results: </strong>Regarding marginal gap, conventional sintering (37.83 ± 10.41μm) was slightly outperformed by both fast (30.64 ± 9.32μm) and ultra-fast (24.01 ± 5.62μm) groups (p=.003), with a significant pairwise difference between the first and the latter (p=.006). In addition, there were no statistically significant differences among groups for internal gap measurements (p=.393).</p><p><strong>Conclusion: </strong>All three groups obtained satisfactory marginal and internal gap values. However, the present findings suggest that ultra-fast sintering speed protocols lead to smaller marginal gap of CAD-CAM zirconia crowns, as compared to the conventional counterparts.</p>","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"1-15"},"PeriodicalIF":1.8,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144765960","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}

{"title":"Influence of Dental Discolorations on the Covering Properties of Different Lithium Disilicate Masses.","authors":"Davide Silvestri, Carlo Monaco, Giancarlo Cozzolino, Francesca Aiello, Martina Bonvicini, Antonio Arena, Marco Redemagni, Salvatore D'Amato","doi":"10.11607/ijp.9428","DOIUrl":"https://doi.org/10.11607/ijp.9428","url":null,"abstract":"<p><strong>Purpose: </strong>This study evaluated the covering properties of lithium disilicate masses with varying translucencies and opacities when applied to discolored abutments, aiming to optimize esthetic outcomes in prosthetic restorations of dyschromic teeth.</p><p><strong>Materials and methods: </strong>Four resin abutments simulating various discolorations were fabricated. Thirteen lithium disilicate frameworks of high-opacity, medium-opacity, and low-translucency masses were heat-pressed to a uniform thickness of 1 mm. Color parameters (CIE L*, a*, b*) were measured using a spectrophotometer across abutment colors. Color differences (ΔE) were calculated relative to a non-dyschromic reference abutment with different LD frameworks above and statistically analyzed using non-parametric ANOVA and multiple comparisons tests (α=0.05).</p><p><strong>Results: </strong>Significant ΔE differences were found among lithium disilicate masses on dyschromic abutments (p<0.0001). High opacity 2 mass consistently showed the best masking performance, achieving ΔE values below the perceptibility threshold for light abutments but not for darker abutments. Low translucency and medium opacity masses exhibited intermediate results, with higher ΔE values on severely discolored abutments.</p><p><strong>Conclusions: </strong>Lithium disilicate frameworks at 1 mm thickness are insufficient to fully mask dyschromic abutments while maintaining translucency. High opacity 2 mass provided the best masking, but darker abutments required additional opaque veneering. The study highlights the limitations of minimally invasive lithium disilicate restorations for severe discolorations. Furthermore, this study highlighted how, in dyschromic abutment covering, it would be easier to reach a perfect matching with a light color, such as a Vita scale A1 using a high opacity mass of lithium disilicate, rather than with more chromatic colors, which resulted in more difficult to mimic.</p>","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"1-24"},"PeriodicalIF":1.8,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144765961","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}

{"title":"The Effect of Build Angle on the Mechanical Properties of 3D-Printed Custom Tray Resin Specimens.","authors":"Fatma Uslu Kavrama, Nazli Aydin, Halit Yosuncigir, Yurdanur Ucar","doi":"10.11607/ijp.9052","DOIUrl":"10.11607/ijp.9052","url":null,"abstract":"<p><strong>Purpose: </strong>To evaluate the effect of build angle on the flexural strength (FS), elastic modulus (E), and hardness (VH) of stereolithography (SLA)-based 3D-printed custom tray resin.</p><p><strong>Materials and methods: </strong>3D-printed specimens with dimensions of 65.0 × 10.0 × 3.3 mm ± 0.2 mm were manufactured with different build angles (90, 120, 135, 150, 180 degrees) using custom tray resin. For preparing the specimens in the control groups, the autopolymerizing (AP) resin and the ultraviolet polymerizing (UV) resin were used. FS and E were determined by a three-point bending test, and hardness was evaluated with the VH test. Fracture surfaces were evaluated with scanning electron microscopy (SEM). Statistical analysis of the data was made using one way ANOVA followed by Dunnett T3 test.</p><p><strong>Results: </strong>Considering all parameters, the UV group was statistically significantly lower than the other groups. The mean E value of the 90D group was statistically significantly different than those of the 150D group (P = .000) and the 180D group (P = .002). The mean E value of the 120D group was statistically significantly different than those of the 150D group (P = .003) and the 180D group (P = .013). The AP group showed a higher mean VH number (20.20 ± 2.08), and the difference was statistically significant compared to the 3D-printed groups (P < .005).</p><p><strong>Conclusions: </strong>Considering its mechanical properties, it was appropriate to arrange the build angles at different degrees when manufacturing reliable custom trays using SLA. The 3D-printed custom tray production method was a more standard method compared to AP and UV.</p>","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"448-456"},"PeriodicalIF":0.0,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143367225","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}

{"title":"Significance of Primary Stability in Nonimmediately Loaded Dental Implants: A Systematic Review and Meta-analysis.","authors":"Nahal Razaghi, Thomas Gill, Anuya Patankar, Aviva Petrie, Shakeel Shahdad","doi":"10.11607/ijp.9115","DOIUrl":"10.11607/ijp.9115","url":null,"abstract":"<p><strong>Purpose: </strong>To determine the significance of primary stability, as measured by insertion torque (IT) and/or implant stability quotient (ISQ), in achieving osseointegration of nonimmediately loaded implants.</p><p><strong>Materials and methods: </strong>Three electronic databases were searched. Studies were included if they measured IT and/ or ISQ at time of placement and reported survival for up to 1 year. For studies where at least one implant failed, a random effects meta-analysis was carried out for the odds of survival.</p><p><strong>Results: </strong>In total, 3,431 publications were screened, and 79 were accepted for analysis. These included 28 RCTs, 12 CCTs, 10 cohort studies, and 29 case series. Overall, 21 studies provided individual implant data for a total of 1,413 implants, and 7 studies were included for meta-analysis. A total of 264 implants were placed with ISQ < 60 and 249 with IT < 35. Survival of implants placed with ISQ < 60 and IT < 35 were 97.7% and 95.2%, respectively. Meta-analysis found no evidence that an ISQ ≥ 60 was less likely to fail compared to ISQ < 60 (OR 0.54, 95% CI 0.17 to 1.75, P = .31), or that an IT ≥ 35 resulted in higher odds of failure compared to IT < 35 (OR 0.82, 95% CI 0.13 to 5.40, P = .84).</p><p><strong>Conclusions: </strong>This study found no evidence to support that an IT ≥ 35 or ISQ ≥ 60 for nonimmediately loaded implants results in higher survival than those below these values.</p>","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"457-482"},"PeriodicalIF":1.8,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143766243","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}

{"title":"Comparative Evaluation of Surface Properties of Milled, 3D- Printed, and Conventional Denture Base Materials: Implications for Clinical Use.","authors":"Farahnaz Nejatidanesh, Omid Savabi, Mohammad Khodaei, Maryam Gheisarifar, Yousef Mohseni Homagarani","doi":"10.11607/ijp.9285","DOIUrl":"https://doi.org/10.11607/ijp.9285","url":null,"abstract":"<p><strong>Purpose: </strong>This study compared surface wettability, roughness, porosity, and hardness of milled (IvoBase CAD), 3D-printed (DentaBase, a light-cured resin), and conventional (heat- polymerized/injection-molded) PMMA denture base materials to assess their clinical suitability.</p><p><strong>Materials and methods: </strong>A total of 40 specimens (15×10×3.3 mm) from four different types of denture base materials (IvoBase CAD, DentaBase 3D Printed, ProBase Hot Heat Polymerized, and IvoBase High-impact Injection Molded Resin) were fabricated according to the manufacturer's instructions. Surface properties were evaluated by using the sessile drop method to measure wettability, digital laser profilometer to measure surface roughness, the gravimetric method to measure porosity, and Vickers micro hardness test to measure surface hardness. Statistical analyses were performed using ANOVA and a relative post hoc test (P value ≤ 0.05).</p><p><strong>Results: </strong>Milled and 3D-printed materials showed significantly lower roughness (0.15-0.12 µm) vs. conventional groups (0.16-0.20 µm; p<0.001). Wettability and hardness varied significantly (p<0.001), with DentaBase exhibiting the highest hardness (23.94 VHN). Porosity did not differ (p=0.633).</p><p><strong>Conclusions: </strong>Milled and 3D-printed resins demonstrated better surface properties, suggesting clinical advantages in reducing microbial adhesion and improving durability. However, heat-polymerized PMMA remains a viable option for specific applications.</p>","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"1-20"},"PeriodicalIF":0.0,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144692906","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}

{"title":"Complete Denture Preclinical Training Program and Digital Tools: A Pilot Study.","authors":"Yohann Flottes, Audrey Porcherot, Marie-Violaine Berteretche, Hélène Citterio, Olivier Fromentin, Christophe Rignon-Bret, Adeline Braud, Claudine Wulfman","doi":"10.11607/ijp.9022","DOIUrl":"10.11607/ijp.9022","url":null,"abstract":"<p><strong>Purpose: </strong>To determine whether digital training improves conceptual skills acquisition for custom tray fabrication and tooth arrangement in the preclinical curriculum for complete denture fabrication.</p><p><strong>Materials and methods: </strong>A crossover design study compared third-year student grades after conventional (manual) and digital training. Half the students were trained with conventional techniques prior to digital, while the other half were trained with digital techniques prior to conventional. The first part of the study (DP1) focused on custom tray fabrication and involved 154 students. The second part (DP2) focused on tooth arrangement with 204 students. The effect of preliminary digital training on conceptual skills was assessed by comparing the results of the students using Student t test. Results were also analyzed by ranking the students' Perceptual Ability Test (PAT) score. Finally, students' satisfaction with the training was investigated.</p><p><strong>Results: </strong>Students who completed the initial digital session achieved better custom tray fabrication and tooth arrangement in the subsequent manual sessions. For manual laboratory work, the most dexterous students (PAT1 group) demonstrated the best performance. However, PAT2 students had the best performance during the digital sessions during DP1, and PAT1 and PAT2 students had the best performance during the digital sessions during DP2. Additionally, 40% of DP1 and 12% of DP2 students expressed satisfaction with digital sessions.</p><p><strong>Conclusions: </strong>With complementary manual and digital teaching, digital tools may be useful for enhanced student learning. Digital training has contributed to improved results in manual sessions but did not affect student satisfaction and remained a limited tool to detect learning difficulties.</p>","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"437-447"},"PeriodicalIF":0.0,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140960998","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}

{"title":"Digital Workflow for Rehabilitation of Severely Discolored Teeth Due to Red Staining from Endodontic Material.","authors":"Joseph Christie Muscat, Ewa Wilkin, Daphne Rizzo, Arthur Rodriguez Gonzalez Cortes","doi":"10.11607/ijp.9106","DOIUrl":"10.11607/ijp.9106","url":null,"abstract":"<p><p>The aim of this article is to present a technique to rehabilitate severely discolored teeth with CAD/CAM zirconia crowns. After confirming the absence of periapical lesions and the presence of sufficient crown structure, any caries or fractured restorations can be removed and replaced with an interim composite restoration. A shoulder subgingival preparation is performed and scanned with an intraoral scanner to design a CAD/CAM zirconia crown using a monolithic zirconia material. This crown is highly polished using a specific polishing kit but not glazed. This technique is suggested to be useful in cases of dark discolored teeth due to staining endodontic materials such as resorcinol-formaldehyde resin.</p>","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"400-403"},"PeriodicalIF":0.0,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142640531","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}