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

{"title":"Simultaneous mandibular Jaw-in-a-Day and maxillary All-on-4 rehabilitation in a single surgery for severe facial trauma: A case report","authors":"Zachary Jin DMD,&nbsp;Jonathan J. Jelmini DDS, MD,&nbsp;David M. Schwitzer DDS, MD,&nbsp;Fayette C. Williams DDS, MD, FACS,&nbsp;Joshua J. Hockaday PA-C,&nbsp;Roderick Y. Kim DDS, MD, MBA, FACS","doi":"10.1111/jopr.14038","DOIUrl":"10.1111/jopr.14038","url":null,"abstract":"<p>Advancements in microvascular free-flap surgery and virtual surgical planning (VSP, 3D Systems) have allowed significant development in immediate reconstruction and dental rehabilitation of maxillofacial defects. These techniques are commonly utilized for dental rehabilitation of ablative defects of the head and neck affected by pathology. The widespread use of the Jaw-in-a-Day protocol has shown to be a feasible and predictable way to immediately reconstruct and dentally rehabilitate in one surgery. However, the literature on applying these advanced techniques in the trauma setting is limited. Furthermore, there are few reported cases in which a Jaw-in-a-Day protocol is used in conjunction with the full arch dental rehabilitation of the opposing jaw. In this scenario, restoring just one arch would not restore a fully functional occlusion. This case report describes a concomitant mandibular Jaw-in-a-Day with a maxillary All-on-4 in one surgery for a patient who sustained severe facial trauma from a self-inflicted gunshot wound.</p>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":"35 7","pages":"973-980"},"PeriodicalIF":3.6,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143392319","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":"Performance assessment of five artificial intelligence-based algorithms for automated tooth segmentation and labeling on intraoral scans","authors":"Germán del Cacho-Salvador B.Eng., MSc,&nbsp;Xavier Paolo Burgos-Artizzu B.Eng., MSc, PhD,&nbsp;Joaquín García-Arranz RDT,&nbsp;Óscar González-Martín DDS, MS, PhD,&nbsp;Carlos Oteo-Morilla DDS, MS, PhD,&nbsp;Mercedes Gallas-Torreira DDS, PhD,&nbsp;Eva Cernadas B.Eng., PhD,&nbsp;Wenceslao Piedra-Cascón DDS, MS","doi":"10.1111/jopr.70117","DOIUrl":"10.1111/jopr.70117","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Purpose</h3>\u0000 \u0000 <p>This study aimed to evaluate and compare the performance of five AI algorithms for tooth segmentation and labeling on intraoral scans, as their performance remains unclear.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Materials and Methods</h3>\u0000 \u0000 <p>A total of 100 intraoral scans in the STL file format were classified into two main groups: complete dentition (C) and partial dentition (P, fewer than 12 teeth). Each group was further divided by arch into four subgroups (<i>n</i> = 25 each): complete maxillary (Mx-C), complete mandibular (Md-C), partial maxillary (Mx-P), and partial mandibular (Md-P). The algorithms tested were the Tooth Group Network (Team CGIP), Dentbird Studio (Dentbird), Medit Ortho Simulation (Medit), NemoSmile 3D (Nemotec), and MovumStudio (MovumTech). Manual segmentations by an expert operator served as the ground truth. Performance was assessed using Python and five metrics, with Intersection over Union (IOU) as the primary indicator. Statistical analysis included permutation tests with the Bonferroni–Holm correction (<i>α</i> = 0.05).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Significant differences were observed between groups and algorithms (<i>P </i>&lt; 0.05). IOU scores ranged from 0.72 to 0.92 in complete dentition and showed greater variability in partial dentition (0–0.928). The Tooth Group Network and MovumStudio consistently outperformed the others, with MovumStudio achieving the highest performance across all metrics and groups. Its performance matched that of a human expert when compared against a subset of the data.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Tooth segmentation and labeling performance vary depending on dentition completeness and algorithm choice. MovumStudio demonstrated the most robust and consistent results, comparable to expert human annotation.</p>\u0000 </section>\u0000 </div>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":"35 7","pages":"1046-1057"},"PeriodicalIF":3.6,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147786801","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":"The influence of implant placement depth on peri-implant tissues in immediate implant placement: A randomized controlled clinical trial with 1-year follow-up","authors":"Jonas Alkimavicius DDS, Dip Perio,&nbsp;Manish Rathi DDS, Dip Perio,&nbsp;Ula Linkeviciute dental student,&nbsp;Laura Linkeviciene DDS, Dip Ortho, PhD,&nbsp;Gediminas Zekonis DDS, Dip Pros, PhD,&nbsp;Tomas Linkevicius DDS, Dip Pros, PhD","doi":"10.1111/jopr.70189","DOIUrl":"10.1111/jopr.70189","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Purpose</h3>\u0000 \u0000 <p>This clinical trial was carried out to compare the outcomes of immediate implants positioned 4 mm below free gingival margin versus deeper placement of 6 mm after a period of 1 year.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Materials and Methods</h3>\u0000 \u0000 <p>Seventy platform-switching implants with a Morse taper conical connection and 1 mm of machined neck were placed in a flapless approach in the molar or premolar region immediately after tooth extraction. A total of 35 implants were positioned 4 mm below the buccal gingival margin (control group), and another 35 were placed 6 mm below the gingival margin (test group). All implant sites were grafted with an allogenic bone substitute and received individual healing abutments (IHAs) made chairside. After 4 months, the implants were restored with final screw-retained zirconia restorations. Radiographic marginal bone loss (MBL) was measured at the delivery of the final restoration (T1) and after 1 year (T2). Peri-implant clinical parameters (probing depth [PD], bleeding on probing [BOP], and plaque index [PI]) were recorded at 1-year follow-up appointment (T2).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>In total, 70 implants were evaluated after 1 year of follow-up (35 control and 35 test groups). The test group showed significantly lower (<i>p</i> &lt; 0.001) MBL than the control group at both T1 (mean ± standard deviation: 0.11 ± 0.32 vs. 0.76 ± 0.68 mm) and T2 (0.12 ± 0.23 vs. 0.54 ± 0.49 mm). The PD mean was 3.46 ± 0.74 in the control group and 3.49 ± 1.20 in the test group, with a <i>p</i>-value of 0.890. PI and BOP were also similar in both groups: PI-11% for the control and 8% for the test groups (<i>p</i> = 0.551), BOP-13% for the control and 7% for the test groups (<i>p</i> = 0.214).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Immediate implants placed 6 mm below the mid-buccal gingival level showed significantly less short-term (up to 1 year) MBL than immediate implants placed 4 mm below the gingiva.</p>\u0000 </section>\u0000 </div>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":"35 7","pages":"1008-1020"},"PeriodicalIF":3.6,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148399894","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":"Osseointegrated implant labial displacement with no mobility in maxillary anterior region: A clinical report","authors":"Yingxue Xiang MSD,&nbsp;Yundong Yang MSD,&nbsp;Yifan Sun MSD,&nbsp;Thomas D. Taylor DDS, MSD,&nbsp;Huijuan Xiao MSD","doi":"10.1111/jopr.70159","DOIUrl":"10.1111/jopr.70159","url":null,"abstract":"<p>Dental implants allow functional and aesthetic reconstruction. Osseointegration is essential for dental implants to be stable and successful. Osseointegration requires proper surface preparation and form design. It has been demonstrated that thread-design implants perform better than non-thread implants. Normally, osseointegrated implants have no obvious displacement. However, this article reports an unusual case of labial displacement of a non-threaded dental implant, with no mobility in the maxillary anterior region.</p>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":"35 7","pages":"981-987"},"PeriodicalIF":3.6,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147844927","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":"Randomized comparative crossover clinical study of mechanical and optical behavior, and oral health–related quality of life of CAD-CAM milled and 3D-printed complete-arch implant-supported interim restorations","authors":"Solange Vasquez-Ramos DDS, MSc, PhD Candidate,&nbsp;Rocío Cascos DDS, MSc, PhD,&nbsp;Juan Ballesteros-Martínez DDS, PhD Candidate,&nbsp;Marta Revilla-León DDS, MSD, PhD,&nbsp;Miguel Gómez-Polo DDS, PhD","doi":"10.1111/jopr.70186","DOIUrl":"10.1111/jopr.70186","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Purpose</h3>\u0000 \u0000 <p>Clinical evidence regarding 3D-printed complete arch interim prostheses remains limited. This randomized crossover trial was designed to compare mechanical complications between milled polymethylmethacrylate (PMMA) and a hybrid ceramic 3D-printed interim restoration and assess mechanical complications, passive fit, optical behavior, and oral health–related quality of life.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Materials and Methods</h3>\u0000 \u0000 <p>Twenty edentulous patients received two complete arch interim prostheses, one milled PMMA and one hybrid ceramic resin 3D-printed restoration, each used for 3 months in a randomized crossover sequence. Mechanical complications, passive fit, optical parameters (L*, a*, <i>b</i>*, Δ<i>E</i>00), and oral health–related quality of life were assessed. Paired nonparametric tests, including the Wilcoxon signed-rank test and McNemar test, were applied (α = 0.05), and risk differences with 95% confidence intervals were calculated.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Milled PMMA exhibited fewer mechanical complications than 3D-printed (10% vs. 45%; <i>p</i> = 0.016; risk difference +35.0 percentage points; 95% CI: 9.5–60.5). Passive fit showed no statistically significant differences between materials (<i>p</i> = 0.500). Mean Δ<i>E</i>00 did not differ significantly (PMMA 4.68 ± 6.57; 3D-printed 4.73 ± 4.75; <i>p</i> = 0.243). The 3D-printed material presented higher <i>L</i>* values at both evaluations (<i>p</i> &lt; 0.001) and a significant increase in <i>a</i>* over time (<i>p</i> = 0.008). Both materials improved Oral Health Impact Profile-14 scores; at 3 months, 3D-printed prostheses showed slightly lower scores than PMMA (<i>p</i> = 0.045).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Milled PMMA showed more favorable mechanical performance. Both materials demonstrated passive fit, stable optical behavior, and improvements in patient-reported outcomes during the 3-month period.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Trial Registration</h3>\u0000 \u0000 <p>ClinicalTrials.gov identifier: NCT05958043.</p>\u0000 </section>\u0000 </div>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":"35 7","pages":"1021-1030"},"PeriodicalIF":3.6,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148392302","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":"Accuracy of face scan-based virtual facebow records: A comparison between two registration methods","authors":"Mario Hertanto DDS, MS,&nbsp;Marcel Hertanto DDS, MS,&nbsp;Zhiqiang Luo DDS, MSD,&nbsp;Fei Liu DDS, MS, PhD, FACP,&nbsp;Luca Lepidi DDS, MDSc,&nbsp;Junying Li DDS, MS, PhD","doi":"10.1111/jopr.70153","DOIUrl":"10.1111/jopr.70153","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Purpose</h3>\u0000 \u0000 <p>Accurate maxillary positioning is critical in digital prosthodontics, particularly when transferring the spatial relationship of the maxilla to a virtual articulator. This study aimed to compare the accuracy of the two most common registration methods, three-dimensional (3D) match and UV (landmark-based point-pair registration) match, for virtual facebow transfer and to investigate whether the type of facial scanner used influences the accuracy of these registration techniques.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Materials and Methods</h3>\u0000 \u0000 <p>A cone beam computed tomography (CBCT) scan of a manikin was used as the reference. The maxillary arch was scanned with three anatomical landmarks and aligned to the CBCT. A computer-aided design and computer-aided manufacturing (CAD-CAM)-printed facebow fork was affixed to the arch, followed by facial scans using the EinScan HX and iPad (10 scans each). For each scan, two registration methods (3D match and UV match) were performed, generating 40 virtual alignments. Superimpositions were completed in Exocad, and accuracy was evaluated by comparing each registration to the CBCT reference using a Python script to measure linear and angular deviations. Trueness and precision were analyzed using a linear mixed model.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>3D match generally outperformed UV in both trueness and precision. The industrial scanner combined with 3D match yielded the highest accuracy, with linear trueness of 0.98 ± 0.67 mm and precision of 1.31 ± 0.79 mm (<i>p</i> &lt; 0.001). With the iPad, 3D registration demonstrated significantly superior angular accuracy (<i>p</i> &lt; 0.050).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>3D registration provides higher accuracy than UV match, and 3D registration, in combination with an industrial-grade scanner, offers higher accuracy in virtual facebow transfer than using iPad.</p>\u0000 </section>\u0000 </div>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":"35 7","pages":"1105-1113"},"PeriodicalIF":3.6,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jopr.70153","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147844510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of stress distribution around splinted and nonsplinted implants with different crown height space in posterior mandible: A finite element analysis study","authors":"Hamiyet Güngör Erdoğan DDS, PhD,&nbsp;Mert Keleş DDS, PhD,&nbsp;Burak Yılmaz DDS, PhD","doi":"10.1111/jopr.13935","DOIUrl":"10.1111/jopr.13935","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Purpose</h3>\u0000 \u0000 <p>The purpose of this finite element analysis (FEA) study was to analyze the stress distribution on prosthetic components of splinted and nonsplinted prostheses, bone, and implants with different crown height space (CHS).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Materials and Methods</h3>\u0000 \u0000 <p>Mandibular posterior segment was modeled with no resorption at the second premolar site and various amounts of resorption (0, 3, 6, and 9 mm) at the first molar site. Two adjacent implants (Straumann bone level implants, 4.1 mm×8 mm) were placed; at the second premolar site, the crown height was 8 mm and at the first molar site, the crown height varied (8, 11, 14, and 17 mm), depending on the amount of resorption. Both splinted and nonsplinted crowns were designed. Vertical and oblique loads of 400 N were applied to the crowns. von Mises stress was used to evaluate the stress distribution in the implant complex and maximum principal stress was used to evaluate the stress in the bone.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>When oblique forces were applied, the highest von Mises stresses were observed for nonsplinted crowns in the 17 mm CHS group. The maximum principal and minimum principal stresses observed in bone under oblique loading increased with increased CHS for nonsplinted restorations.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Crown height affected the amount of stress in bone and implant components. When the crown height difference between two adjacent implants increases, splinting may be crucial.</p>\u0000 </section>\u0000 </div>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":"35 7","pages":"1124-1133"},"PeriodicalIF":3.6,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jopr.13935","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142127124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","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 DDS, MSc, MSD,&nbsp;Rui Li DDS, PhD,&nbsp;Burak Yilmaz DDS, PhD,&nbsp;Gulce Cakmak DDS, PhD","doi":"10.1111/jopr.14065","DOIUrl":"10.1111/jopr.14065","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Purpose</h3>\u0000 \u0000 <p>To assess the fabrication trueness, precision, and internal fit of additively manufactured (AM) and subtractively manufactured (SM) resin-based definitive crowns.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Materials and Methods</h3>\u0000 \u0000 <p>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 (<i>n</i> = 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 (<i>α</i> = 0.05).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Significant differences were observed among the resin-based crown materials for trueness (RMS), precision deviation, and internal fit (<i>p</i> &lt; 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 (<i>p </i>&lt; 0.001). SM-C and SM-S showed superior occlusal fit compared to AM-F and AM-S (<i>p</i> &lt; 0.001).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>The type of CAD-CAM manufacturing method—additive or subtractive—significantly influenced the trueness and internal fit of resin-based definitive crowns.</p>\u0000 </section>\u0000 </div>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":"35 7","pages":"1134-1141"},"PeriodicalIF":3.6,"publicationDate":"2026-08-10","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":"Masking performance of structural-color composites as luting agents for high-translucency zirconia-reinforced lithium silicate veneers.","authors":"Alaa Al-Haddad, Mikel Alrabadi, Rawan Abu Zaghlan, Omar Al-Karadsheh, Mahmoud K Al-Omiri","doi":"10.1111/jopr.70211","DOIUrl":"https://doi.org/10.1111/jopr.70211","url":null,"abstract":"<p><strong>Purpose: </strong>To evaluate the aging-related masking performance of structural-color composites used as luting agents for ultrathin, high-translucency (HT) zirconia-reinforced lithium silicate (ZLS) veneers, comparing a dedicated blocker against its universal counterpart, conventional light-cure veneer cements, and preheated composites.</p><p><strong>Materials and methods: </strong>ZLS discs (VITA Suprinity 0M1-HT; 10 × 0.50 mm²; n = 35; n = 5 per group) were luted to standardized zirconia substrates. Luting media included RelyX Veneer (Translucent, A3, WO), Omnichroma Universal, Omnichroma Blocker, Filtek Z250 XT B1, and Vittra APS E-Bleach. Specimens were aged by thermocycling (10,000 cycles, 5-55°C) followed by coffee immersion (7 days, 37°C). Color was measured over white and black backgrounds at baseline and post-aging using a spectrophotometer. Outcomes included CIEDE2000 color difference (ΔE₀₀), whiteness index change (ΔWI_D), and translucency parameter change (ΔTP₀₀). Data were analyzed using one-way ANOVA with Holm-adjusted pairwise comparisons (α = 0.05). Results were interpreted against established perceptibility and acceptability thresholds (PT₀₀ = 0.8, AT₀₀ = 1.8; whiteness perceptibility threshold = 0.72, whiteness acceptability threshold = 2.62; TPT₀₀ = 0.62, TAT₀₀ = 2.62).</p><p><strong>Results: </strong>Luting medium significantly affected all optical outcomes (p < 0.001). For the primary endpoint (ΔE₀₀ over black background), Omnichroma Universal showed the smallest change (0.27 ± 0.10), whereas Vittra APS E-Bleach showed the largest (4.38 ± 0.34), exceeding the acceptability threshold in all specimens. Omnichroma Blocker (0.57 ± 0.15) did not differ significantly from Omnichroma Universal after Holm adjustment for the primary endpoint. Filtek Z250 XT B1 (1.30 ± 0.22) exceeded the perceptibility threshold in all specimens. For whiteness change, Vittra APS E-Bleach exceeded the acceptability threshold in all specimens (ΔWI_D = 6.51 ± 1.29), whereas Omnichroma groups showed negative ΔWI_D values (-0.80 ± 0.36 and -0.73 ± 0.52). Translucency changes remained below clinically detectable thresholds across all groups.</p><p><strong>Conclusions: </strong>For ultrathin, HT ZLS veneers, aging-related optical stability was highly luting material-specific. Omnichroma Blocker did not provide superior aging-related masking stability compared with Omnichroma Universal for the primary dark-background endpoint. Vittra APS E-Bleach showed color and whiteness changes that exceeded acceptability thresholds under the tested aging conditions, whereas translucency changes remained limited across all luting media.</p>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":" ","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148680739","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 four digital methods in capturing complete-arch implant positions: Direct scanning, splinted scan bodies, three-dimensional-printed scan aids, and intraoral photogrammetry.","authors":"Lina Aljumaili, İhsan Caglar Cinar","doi":"10.1111/jopr.70213","DOIUrl":"https://doi.org/10.1111/jopr.70213","url":null,"abstract":"<p><strong>Purpose: </strong>This study compared the trueness of four digital impression methods in capturing complete-arch implant positions.</p><p><strong>Materials and methods: </strong>An edentulous mandibular model with four angled multi-unit abutment analogs was fabricated and digitized using a desktop scanner (Vinyl HR; Smart Optics) to create a reference dataset. An intraoral scanner (IOS) (Aoralscan Elite; Shining three-dimensional [3D]) equipped with intraoral photogrammetry (IPG) was used for the experimental scans. Four methods were evaluated: direct scanning without splinting (scan body [SB]), splinting scan bodies with light-polymerized acrylic resin (SP), scanning with custom 3D-printed scan aids (SAs), and IPG. A power analysis determined the need for 21 scans per group. Standard tessellation language files were imported into CAD software, converted into implant abutment replicas, and analyzed using 3D inspection software (Geomagic Control X; 3D Systems) to assess 3D, linear, and angular discrepancies. Trueness was analyzed with Kruskal-Wallis and one-way analysis of variance tests (α = 0.05), followed by post hoc analysis.</p><p><strong>Results: </strong>The SB group showed the highest 3D distortion, and the SP group exhibited the highest angular deviation. The IPG and SA groups had comparable linear and 3D deviation values without significant differences. IPG demonstrated the lowest angular distortion of all methods. The right posterior implant recorded the highest 3D distortion, whereas the right anterior implant exhibited the greatest angular deviation.</p><p><strong>Conclusions: </strong>IPG and SA approaches yielded comparable results, except for angular distortion. These findings provide evidence for selecting optimal digital workflows in full-arch implant rehabilitation. Scan aids can enhance the performance of IOSs in acquiring complete-arch digital impressions, with trueness values approaching IPG systems.</p>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":" ","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148680741","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}