Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry最新文献

{"title":"Shade variability and stability in interim and definitive tooth-colored resin-based restorative materials: Comparing manufacturer-claimed shades to a universal shade guide.","authors":"Amal Alfaraj, Toshiki Nagai, Wei-Shao Lin","doi":"10.1111/jopr.14069","DOIUrl":"https://doi.org/10.1111/jopr.14069","url":null,"abstract":"<p><strong>Purpose: </strong>To evaluate the shade variability and stability of interim and definitive tooth-colored restorative materials by comparing manufacturer-claimed shades to a universal shade guide before and after thermocycling.</p><p><strong>Materials and methods: </strong>Eight commercially available tooth-colored restorative materials were tested, including conventional, milled, and 3D-printed types. Each material was categorized into three shade subgroups (A1, A2, and A3), with 10 samples per subgroup. The color differences (ΔE₀₀) between the materials' shades and a universal shade guide (VITA classical A1-D4) were measured using a digital spectrophotometer before (ΔE_00-R1) and after (ΔE_00-R2) thermocycling. A higher ΔE₀₀ indicated higher variability between the manufacturer-claimed shade and a corresponding universal shade guide. The ΔE₀₀ was analyzed using the CIEDE2000 formula, and statistical analysis was performed to evaluate the effects of materials, shades, and thermocycling. In addition, the ΔE₀₀ was compared against 50%:50% perceptibility threshold (PT) and 50%:50% acceptability threshold (AT) using one-sample t-tests (α = 0.05).</p><p><strong>Results: </strong>The observations from descriptive statistics showed that the milled Aidite group exhibited the lowest ΔE₀₀. In addition, shade A1 showed higher ΔE₀₀ than A2 and A3 within each group; however, the ΔE₀₀ between shade types A2 and A3 was similar. The three-way interaction among materials, shades, and thermocycling was significant (p < 0.0001), highlighting their combined effect on ΔE₀₀. No significant interaction between shade and thermocycling was observed (p = 0.6239), suggesting that thermocycling did not significantly affect ΔE₀₀ among shade subgroups. Comparison of ΔE_00-R1 and ΔE_00-R2 against 50%:50% PT (0.8) and 50%:50% AT (1.8) revealed significant color differences beyond both thresholds for most study groups.</p><p><strong>Conclusions: </strong>Color variability in dental restorative materials is influenced by material, shade, and thermocycling. Most samples showed significant discrepancies from manufacturer-specified shades (A1, A2, and A3) when compared to the VITA classical A1-D4 guide. Clinicians might consider using a custom shade guide that is fabricated from the same material as the prostheses to improve shade matching outcomes.</p>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144044937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Maxillary reconstruction using subperiosteal dental implants: A clinical report.","authors":"Hannah Machine, Sassan Nadjmi","doi":"10.1111/jopr.14066","DOIUrl":"https://doi.org/10.1111/jopr.14066","url":null,"abstract":"<p><p>Subperiosteal implants were first described in the literature in the 1940s. A new generation of subperiosteal implants that utilize digital and CAD-CAM technology to fit the implant precisely to the patient's bone anatomy are becoming more commonplace. This treatment modality can be very useful for patients who suffer from atrophic edentulous ridges where bone augmentation is not possible. This clinical report documents a clinical case where a subperiosteal titanium framework was inserted and restored with a maxillary implant-assisted complete denture in a patient who received a hemi-maxillectomy due to an ameloblastoma.</p>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144027649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dual milling technique for manufacturing monolithic complete dentures with 3D-printed occlusal surfaces: A dental technique.","authors":"Fu-Chuan Tsai, Wei-Shao Lin, Sheng-Wei Feng, Chi-Chun Liao, Wei-Chun Lin","doi":"10.1111/jopr.14067","DOIUrl":"https://doi.org/10.1111/jopr.14067","url":null,"abstract":"<p><p>This technical report described a digital approach that utilized computer-aided design and computer-aided manufacturing (CAD-CAM) workflows, integrating digital design, selective laser melting (SLM) metal 3D-printing, and a dual milling process to fabricate monolithic complete dentures with metal occlusal surfaces. The dual milling technology ensured accurate occlusion and minimized the risk of assembly errors. This technique is indicated for patients with severe occlusal wear in acrylic denture teeth by substituting metal for the occlusal surfaces.</p>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144048605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Trueness, precision, and internal fit of additively and subtractively manufactured definitive resin-based crowns.","authors":"Ahmet Orgev, Rui Li, Burak Yilmaz, Gulce Cakmak","doi":"10.1111/jopr.14065","DOIUrl":"https://doi.org/10.1111/jopr.14065","url":null,"abstract":"<p><strong>Purpose: </strong>To assess the fabrication trueness, precision, and internal fit of additively manufactured (AM) and subtractively manufactured (SM) resin-based definitive crowns.</p><p><strong>Materials and methods: </strong>A maxillary right first molar complete-coverage crown was designed and fabricated using 2 additively manufactured [Pro Resins Crown X (AM-S); Straumann USA LLC and Flexcera Smile Ultra+ (AM-F); Desktop Health] and 2 subtractively manufactured [Shofu HC (SM-S); SHOFU Dental Corp and Brilliant Crios (SM-C); Coltene/Whaledent AG] resins (n = 15). The crowns were scanned using an intraoral scanner (IOS) and then seated onto the abutment tooth and rescanned. Fabrication trueness was evaluated by superimposing test data (TD) over the reference crown and computing the root mean square (RMS, µm) error for overall, intaglio, and margin surfaces. Internal fit was evaluated by measuring the average gap distance between the crown and abutment tooth (µm) using a modified triple scan protocol (TSP) for overall, occlusal, and axial surfaces. One-way ANOVA followed by post hoc Tukey's comparison tests was used to analyze the data (α = 0.05).</p><p><strong>Results: </strong>Significant differences were observed among the resin-based crown materials for trueness (RMS), precision deviation, and internal fit (p < 0.001). AM-F had the lowest intaglio RMS value. Margin RMS values for AM-F and AM-S were significantly lower than those for SM-C and SM-S (p < 0.001). SM-C and SM-S showed superior occlusal fit compared to AM-F and AM-S (p < 0.001).</p><p><strong>Conclusions: </strong>The type of CAD-CAM manufacturing method-additive or subtractive-significantly influenced the trueness and internal fit of resin-based definitive crowns.</p>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143993417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Timing of keratinized mucosa augmentation and peri-implant outcomes: A systematic review and meta-analysis.","authors":"Anahita Moscowchi, Reza Amid, Mohammad Nahvi, Nazli Rastkar","doi":"10.1111/jopr.14064","DOIUrl":"https://doi.org/10.1111/jopr.14064","url":null,"abstract":"<p><strong>Purpose: </strong>This study aimed to compare different surgical timings for keratinized mucosa (KM) augmentation and assess the impact on peri-implant parameters stability.</p><p><strong>Methods: </strong>Electronic searches were conducted through MEDLINE (via PubMed), Scopus, Embase, and Web of Science up to June 13, 2024, which was completed with a manual search. The inclusion criteria focused on randomized and non-randomized human clinical studies that assessed outcomes of KM augmentation, with at least 3-months follow-up. The analysis included changes in KM width over time and several secondary outcomes.</p><p><strong>Results: </strong>Twenty-five studies satisfied the inclusion criteria. The studies included 855 patients and 1588 implants. The KM width significantly increased after surgery, regardless of the time or method of intervention (MD: 5.17, 95% CI: 4.59, 5.75, p<0.001). The second-stage surgery, particularly with the use of autogenous graft, indicated the lowest reduction in KM width up to 3 months after surgery, while a significant shrinkage was found when the augmentation was performed post-restoratively.</p><p><strong>Conclusion: </strong>The evidence suggests that second-stage surgery is acceptable for KM augmentation, whereas the post-restorative phase is generally not the primary option. In cases where suboptimal soft tissue conditions are detected, it is advisable to either undertake KM augmentation or refer the patient for additional assessment before proceeding with the delivery of the restoration. Due to limited data, it is not possible to come to a definitive conclusion about the other surgical phases.</p>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144051761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of the accuracy of digital workflow for implant-supported full-arch fixed dental prostheses using a novel micro-CT measurement technique.","authors":"Amira Fouda, Chris Wyatt, Anthony McCullagh, Siddharth R Vora, Nancy L Ford, Mohamed Gebril","doi":"10.1111/jopr.14061","DOIUrl":"https://doi.org/10.1111/jopr.14061","url":null,"abstract":"<p><strong>Purpose: </strong>This study aims to evaluate the accuracy of fit of full-arch implant titanium frameworks fabricated from a fully digital workflow using a novel micro-CT measurement technique.</p><p><strong>Materials and methods: </strong>A 3D-printed model with four implant analogs was fabricated. A baseline micro-CT was obtained after placing temporary cylinders on the model. Next, the printed model was scanned with an intraoral scanner (TRIOS 5), and the STL files were used to fabricate 10 titanium frameworks. Each framework was placed back on the model, and another micro-CT was taken under two conditions: single screw test (SST-CT) and final fit test (FFT-CT), and the measurements were compared to the baseline. Framework passivity was evaluated using a single-screw test (SST) and a screw-resistance test (SRT). The accuracy of the intraoral scans was assessed by superimposing the 10 scans with a laboratory scan STL to determine if the misfit was due to scanning or milling and designing errors.</p><p><strong>Results: </strong>None of the frameworks was deemed acceptable using SST-CT, and only three had an acceptable fit using FFT-CT. SST and SRT non-passivity rates were 60% and 80%, respectively. Superimposition analysis revealed that only two intraoral scans used for framework fabrication fell within the acceptable deviation range of 150 microns, suggesting a high tendency for scanning errors and a possible milling or designing error in two samples.</p><p><strong>Conclusion: </strong>The results show a significant level of misfit. This suggests that the full-digital workflow for full-mouth rehabilitation can present some limitations. Due to the rapid advancement in intraoral scanning, further studies are required to validate these findings.</p>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144062702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Workflow to facilitate complete denture scanning with an intraoral scanner: A technique report.","authors":"Jiayi Yu, Jiayi Lu, Berna Saglik, Junying Li","doi":"10.1111/jopr.14063","DOIUrl":"https://doi.org/10.1111/jopr.14063","url":null,"abstract":"<p><p>Scanning a denture with an intraoral scanner is typically more challenging than scanning a dentate arch. This article describes a novel technique for digitally duplicating a complete denture. The workflow involves scanning an existing denture using an intraoral scanner with the addition of specific markers and subsequently constructing a digital denture by smoothing out these markers. This protocol may enhance the efficiency and accuracy of the scanned data and requires only minimal processing using an open-source software program.</p>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144056720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biomechanics of the implant-supported full arch fixed complete denture manufactured by milling and injection techniques: An experimental and FEA study.","authors":"Mustafa Gürkan, Ovul Kumbuloglu, Makbule Heval Şahan, Mert Narin, Halis Kandaş, Yusuf Arman, Hasan Yildiz, Mahmut Pekedis","doi":"10.1111/jopr.14058","DOIUrl":"https://doi.org/10.1111/jopr.14058","url":null,"abstract":"<p><strong>Purpose: </strong>This study aims to characterize the mechanical properties of implant-supported full arch fixed complete dentures manufactured by milling and injection techniques.</p><p><strong>Materials and methods: </strong>Twenty-two samples with milling and injection manufacturing techniques were fabricated. Twenty-two titanium samples were manufactured to be used as the control group. Additionally, eight PEEK samples from both the injection and milling groups were manufactured and tested using a uniaxial tensile test, and the obtained results were used as input data for finite element analysis (FEA). All-on-four PEEK hybrid prostheses supported with 2 implants on the mandible were used for the simulations. The FEA computations were performed for a bilateral 150 N force applied in both vertical and oblique directions.</p><p><strong>Results: </strong>A significant difference was observed between the injection and milled PEEK groups in terms of modulus of elasticity (Injection PEEK group: 3.1 ± 0.6 GPa, Milling PEEK: 4.6 ± 0.9 GPa) and flexural rigidity (Injection PEEK group: 28.0 ± 5.8 kNmm², Milling PEEK: 41.2 ± 8.4 kNmm²) (p < 0.05), while no significant differences were observed between the injection and milled PEEK groups in terms of other parameters (p > 0.05). The finite element results showed that the highest stresses were observed in the Injection PEEK group, while the lowest were observed in the Milling Titanium group. Both injection and milled PEEK frameworks exceeded the yield stress limit during vertical and oblique loading.</p><p><strong>Conclusion: </strong>It was concluded that the forces implemented on rigid framework material such as titanium were better distributed to the implants supporting the all-on-four prosthesis.</p>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144058363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Narrow-diameter implants for treatment with fixed restorations in the posterior region: A systematic review and meta-analysis.","authors":"Aspasia Pachiou, Panagiotis Tsirogiannis, Alexis Ioannidis, Tim Joda, Nikitas Sykaras, Olga Naka","doi":"10.1111/jopr.14057","DOIUrl":"https://doi.org/10.1111/jopr.14057","url":null,"abstract":"<p><strong>Purpose: </strong>To evaluate the survival and complication rates of narrow-diameter implants (NDIs) for treatment with fixed restorations in premolar and molar sites.</p><p><strong>Methods: </strong>A systematic review and meta-analysis were conducted following the preferred reporting items of systematic reviews and meta-analyses (PRISMA) guidelines. Searches were performed according to a Population-Intervention-Outcome (PIO) format in MEDLINE, Scopus, and Cochrane Library, supplemented by manual cross-referencing. Inclusion criteria encompassed clinical studies on NDIs (<3.75 mm diameter) restored with fixed dental prostheses (FDP) in the posterior region. Random-effect models were employed to pool survival and complication rates, and heterogeneity was assessed using the Q test and I² statistic. Subgroup analyses explored variations by jaw location, implant material, and follow-up. The risk of bias was evaluated using the Cochrane tool for randomized controlled trials (RCTs) and the MINORS tool for non-randomized studies.</p><p><strong>Results: </strong>Thirty-six trials involving 2741 NDIs were included in the systematic review and 29 in the meta-analysis. Survival rates (SRs) ranged from 92.73% to 100% with follow-up periods from 10.8 months to 12 years. Pooled SRs for maxillary (97.0%; 95%CI: 96.2%-97.8%) and mandibular (96.5%; 95%CI: 95.7%-97.3%) NDIs were not significantly different (p = 0.688). Comparing NDIs in the premolar and molar sites, jaw location demonstrated similar SRs of 97.5% (95% CI: 95.9%-99.1%) and 98.6% (95% CI: 96.5%-99.6%), respectively. Technical complication rates varied from 0% to 23.5%, with follow-up periods ranging from 1 to 12 years. These complications primarily included screw loosening, fractures, and detachment of restorations. Data on biological complications were notably limited, and due to the heterogeneity in reporting, comparisons were not feasible.</p><p><strong>Conclusion: </strong>NDIs demonstrate high survival and low complication rates for therapy of the partially edentulous patient with FDPs in posterior sites. The clinical performance is consistent across jaw location and implant materials.</p>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144043606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing digital workflows for removable partial dentures: A novel diagnostic surveyor and designer.","authors":"Ahmed Mahrous, David L Botsko, Tamer El-Gendy, Amira Elgreatly","doi":"10.1111/jopr.14059","DOIUrl":"https://doi.org/10.1111/jopr.14059","url":null,"abstract":"<p><p>Removable partial dentures (RPDs) are a valuable treatment option in prosthodontics, often selected due to patient-specific limitations such as financial constraints, inadequate bone support, or medical contraindications to other prosthetic solutions. Despite the advantages of digital dentistry, such as the efficiency and accuracy of various workflows, the adoption of fully digital RPD workflows has lagged due to the absence of accessible diagnostic surveying and design tools for digital models. This article introduces the AiDENTAL RPD Surveyor and Designer, a lightweight, browser-based software solution that simplifies digital surveying, streamlines design, and facilitates the export of diagnostic scans. By addressing these needs in the current digital workflow, the system aims to enhance the efficiency, accuracy, and convenience of RPD fabrication. A step-by-step description of the process highlights its potential to improve clinical outcomes and reintegrate traditional framework-based RPDs into mainstream practice.</p>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143992312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}