Journal of Prosthetic Dentistry最新文献

{"title":"Sponsoring Organizations and Liaisons","authors":"","doi":"10.1016/S0022-3913(25)00635-3","DOIUrl":"10.1016/S0022-3913(25)00635-3","url":null,"abstract":"","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"134 3","pages":"Page A2"},"PeriodicalIF":4.8,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144926798","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":"Digital workflow for complete arch immediate loading with a prefabricated interim prosthesis using autonomous robotic surgery: A dental technique","authors":"Ping Li PhD ,&nbsp;Ke Chen MS ,&nbsp;Jiahao Chen MS ,&nbsp;Shulan Xu MS ,&nbsp;An Li PhD ,&nbsp;Shuo Yang MS","doi":"10.1016/j.prosdent.2024.07.028","DOIUrl":"10.1016/j.prosdent.2024.07.028","url":null,"abstract":"<div><div>A fully digital workflow incorporating autonomous robotic surgery is described. A prefabricated interim prosthesis offers the potential to streamline the process and reduce chairside time. Adopting this digital workflow can simplify the treatment procedure and help minimize the overall time required for the provision of implant-supported prostheses.</div></div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"134 3","pages":"Pages 573-579"},"PeriodicalIF":4.8,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142108593","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":"Influence of connected and nonconnected calibrated frameworks on the accuracy of complete arch implant scans obtained by using four intraoral scanners, a desktop scanner, and a photogrammetry system","authors":"Marta Revilla-León DDS, MSD, PhD ,&nbsp;Abdul B. Barmak MD, MSc, EdD ,&nbsp;Alejandro Lanis DDS, MS ,&nbsp;John C. Kois DMD, MSD","doi":"10.1016/j.prosdent.2024.01.017","DOIUrl":"10.1016/j.prosdent.2024.01.017","url":null,"abstract":"<div><h3>Statement of problem</h3><div>Different techniques have been proposed for increasing the accuracy of complete arch implant scans obtained by using intraoral scanners (IOSs), including a calibrated metal framework (IOSFix); however, its accuracy remains uncertain.</div></div><div><h3>Purpose</h3><div>The purpose of this in vitro study was to compare the accuracy of complete arch scans obtained with connecting and non-connecting the implant scan bodies (ISBs) recorded using intraoral scanners (IOSs), a laboratory scanner (LBS), and photogrammetry (PG).</div></div><div><h3>Material and methods</h3><div>A cast with 6 implant abutment analogs was obtained. Six groups were created: TRIOS 4, i700, iTero, CS3800, LBS, and PG groups. The IOSs and LBS groups were divided into 3 subgroups: nonconnected ISBs (ISB), splinted ISBs (SSB), and calibrated framework (CF), (n=15). For the ISB subgroups, an ISB was positioned on each implant abutment analog. For the SSB subgroups, a printed framework was used to connect the ISBs. For the CF subgroups, a calibrated framework (IOSFix) was used to connect the ISBs. For the PG group, scans were captured using a PG (PIC Camera). Implant positions of the reference cast were measured using a coordinate measurement machine, and Euclidean distances were used as a reference to calculate the discrepancies using the same distances obtained on each experimental scan. Wilcoxon squares 2-way ANOVA and pairwise multiple comparisons were used to analyze trueness (α=.05). The Levene test was used to analyze precision (α=.05).</div></div><div><h3>Results</h3><div>Linear and angular discrepancies were found among the groups (<em>P</em>&lt;.001) and subgroups (<em>P</em>&lt;.001). Linear (<em>P</em>=.008) and angular (<em>P</em>&lt;.001) precision differences were found among the subgroups.</div></div><div><h3>Conclusions</h3><div>The digitizing method and technique impacted the trueness and precision of the implant scans. The photogrammetry and calibrated framework groups obtained the best accuracy. Except for TRIOS 4, the calibrated framework method improved the accuracy of the scans obtained by using the IOSs tested.</div></div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"134 3","pages":"Pages 800-808"},"PeriodicalIF":4.8,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140039624","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":"Noncarious cervical lesions: Response from a 25-year clinical follow-up study","authors":"Caroline Vieira Maluf DDS, MS, PhD ,&nbsp;Eduardo José Veras Lourenço DDS, MS, PhD ,&nbsp;Luiz Fernando Pegoraro DDS, MS, PhD ,&nbsp;Daniel de Moraes Telles DDS, MS, PhD","doi":"10.1016/j.prosdent.2023.11.001","DOIUrl":"10.1016/j.prosdent.2023.11.001","url":null,"abstract":"<div><h3>Statement of problem</h3><div>The etiology and diagnosis of noncarious cervical lesions (NCCLs) remain poorly understood.</div></div><div><h3>Purpose</h3><div>The purpose of this clinical study was to examine NCCL progression in an existing group of participants, establish the incidence of new NCCLs in a 25-year follow-up study, and relate them to possible risk factors, including occlusal factors.</div></div><div><h3>Material and methods</h3><div>Thirty-three participants who had completed a questionnaire about their habits, diet, and personal information were evaluated in this observational retrospective study. Impressions were made, and casts from 3 time periods (Phase I in 1996, Phase II in 1999, and Phase III in 2021) were scanned to obtain digital casts. The casts were then evaluated in a 3-dimensional analysis software program (Geomagic Control; 3D Systems) to establish digital comparisons between NCCLs and occlusal wear. Furthermore, data from an occlusal analysis device (T-Scan; Tekscan) collected in Phase I was used to analyze occlusal interferences relating to the progression of NCCLs. The statistical analysis applied nonparametric tests<span>, followed by the assessment of the association between NCCLs and risk factors, including occlusal wear, through binary logistic regression (α=.05).</span></div></div><div><h3>Results</h3><div>At the end of Phase III, 7 new individuals with NCCLs were detected compared with Phase II. The median percentage progression of NCCLs per participant was 0.0% in Phase I, 7.1% in Phase II, and 35.7% in Phase III (P&lt;.005). Occlusal wear in Phase I was associated with 5.02 times the occurrence of NCCLs in Phase III; occlusal wear in Phase II was associated with 4.73 times the occurrence of NCCLs in Phase III; and occlusal wear in Phase III was associated with 1.94 times the occurrence of NCCLs in Phase III (<em>P</em><span>&lt;.001). Occlusal interference in border movements of the mandible was associated with a 3.55 times greater chance of presenting NCCLs in Phase III (</span><em>P</em>&lt;.001). Additionally, statistically significant risk factors for the presence of NCCLs in Phase III were an acidic diet (<em>P</em>=.043) and alcohol consumption (<em>P</em>=.021).</div></div><div><h3>Conclusions</h3><div>The 25-year data showed an association between NCCLs and specific risk factors, including occlusal wear and occlusal interferences.</div></div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"134 3","pages":"Pages 653-661"},"PeriodicalIF":4.8,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138440892","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":"#implantology: A content analysis of the implant-related hashtags on Instagram","authors":"Passent Ellakany BDS, MSc, PhD ,&nbsp;Nourhan M. Aly BDS, MSc ,&nbsp;Mohamed G. Hassan BDS, MSc, PhD","doi":"10.1016/j.prosdent.2023.10.013","DOIUrl":"10.1016/j.prosdent.2023.10.013","url":null,"abstract":"<div><h3>Statement of problem</h3><div>Social media platforms such as Instagram have recently become popular among dentists, dental interest groups, and patients for sharing dental-related information. However, a study that dissects and analyzes implant-related posts on Instagram is lacking.</div></div><div><h3>Purpose</h3><div>The purpose of this study was to analyze the type of implant-related information on Instagram by highlighting the characteristics of the top-performing posts and assessing their usefulness as educational content.</div></div><div><h3>Material and methods</h3><div>A list of 12 implantology-related hashtags on Instagram was searched, and, for each hashtag, data were acquired for the “Top 12 posts” listed by the Instagram search algorithm. The contents of each post, including the number of likes and followers, content type, poster role, post content, theme and type, account type, and accuracy of claims, were collected. Descriptive statistics were calculated, and comparisons were performed by using the Mann-Whitney U and Kruskal Wallis tests (α=.05).</div></div><div><h3>Results</h3><div>The search identified 4 541 867 implant-related posts. The 2 most used hashtags were #dentalimplants (n=1 478 770) and #implant (n=1 303 575). Authorship and content analysis showed that dentists, including specialists, posted about 42% of the posts. More than half of the posts were in the form of pictures (62.5%), self-promotional (77.8%), and used for marketing purposes (61.8%). Most posts were not supported by evidence, and only 27.8% shared clinical facts. However, compared with self-promotional posts, most educational posts shared clinical facts with more likes, views, and followers (<em>P</em>&lt;.001).</div></div><div><h3>Conclusions</h3><div>More than 4 million posts related to implant dentistry were identified on Instagram. Dental interest groups and patients authored most posts, with less contribution from dentists and specialists. Social media awareness among dentists may enhance the number of educational posts and provide a novel platform for networking and communication.</div></div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"134 3","pages":"Pages 784-790"},"PeriodicalIF":4.8,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89718727","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":"Comparison of vertical marginal gap and internal fit of chairside laminate veneers fabricated from advanced versus conventional lithium disilicate ceramics: An in vitro study","authors":"Reham Said Elbasty BDS, PhD ,&nbsp;Omnia Nabil BDS, PhD ,&nbsp;Mai Salah Elgohary BDS, PhD ,&nbsp;Maha Taymour BDS, PhD","doi":"10.1016/j.prosdent.2025.02.044","DOIUrl":"10.1016/j.prosdent.2025.02.044","url":null,"abstract":"<div><h3>Statement of problem</h3><div>Conventional lithium disilicate material is frequently the material of choice whenever laminate veneers are advocated. Advanced lithium disilicate (CEREC Tessera) has been introduced and is thought to be a favorable alternative to conventional lithium disilicates in terms of reduced chairside time. However, its reliability as a material for laminate veneer fabrication has not been adequately assessed.</div></div><div><h3>Purpose</h3><div>The purpose of this in vitro study was to assess the vertical marginal gap and internal fit of laminate veneers fabricated from the advanced lithium disilicate ceramic versus the conventional lithium disilicate ceramic.</div></div><div><h3>Material and methods</h3><div><span>A total of 22 laminate veneers were fabricated for a maxillary central incisor and divided into 2 groups; Group E (e.max CAD): fabricated from conventional lithium disilicate and Group T (Tessera):fabricated from advanced lithium disilicate. A typodont maxillary right central incisor was prepared by following the recommended parameters, and the laminate veneers were then scanned, designed, and milled. Quantitative measurements of the vertical marginal gap and internal fit of the laminate veneers on the typodont tooth were made by direct viewing and the silicone replica approach, respectively, using a digital microscope. The Student </span><em>t</em> test was performed for statistical analysis of the results (α=.05).</div></div><div><h3>Results</h3><div>The mean values of both groups varied significantly. Group T had a lower mean vertical marginal gap (40.5 µm) than group E (52.6 µm) (<em>P</em>&lt;.05). In terms of internal fit, group T had a higher value (191.5 µm) than group E (142.4 µm) (<em>P</em>&lt;.05).</div></div><div><h3>Conclusions</h3><div>Advanced lithium disilicate laminate veneers revealed better vertical marginal gap and lower internal fit than conventional lithium disilicate laminate veneers.</div></div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"134 3","pages":"Pages 748.e1-748.e6"},"PeriodicalIF":4.8,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143663759","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":"Wear behavior of 3D printed, minimally invasive restorations: Clinical data after 24 months in function","authors":"Magda Doumit DMD ,&nbsp;Florian Beuer DMD ,&nbsp;Mats Wernfried Heinrich Böse DMD ,&nbsp;Alexey Unkovskiy DMD ,&nbsp;Jeremias Hey DMD ,&nbsp;Elisabeth Prause DMD","doi":"10.1016/j.prosdent.2025.03.014","DOIUrl":"10.1016/j.prosdent.2025.03.014","url":null,"abstract":"<div><h3>Statement of problem</h3><div>The prevalence of pathological tooth wear and a reduced vertical dimension of occlusion has increased, but prosthetic rehabilitation concepts have been invasive, time-consuming, and expensive. How affordable, esthetic, and less invasive treatment concepts will perform remains unclear.</div></div><div><h3>Purpose</h3><div>The purpose of this proof-of-concept clinical study was to evaluate the wear behavior of 3-dimensionally (3D) printed, minimally invasive restorations fabricated from a ceramic- reinforced composite resin material after 24 months in clinical function.</div></div><div><h3>Material and methods</h3><div>The study included 28 participants who received noninvasive 3D printed restorations made of a computer-aided design and computer aided-manufacturing (CAD-CAM) ceramic-reinforced composite resin material (n=352). Maximum occlusal height loss and mean profile loss were measured by using an intraoral scanner and a matching software program (Geomagic Control X; 3D systems) by 1 clinician. Scans were conducted at baseline and after 12 and 24 months. A descriptive statistical analysis, including mean values, medians, standard deviations (SDs) interquartile range and 95% confidence interval (95% CI) were conducted (α=.05).</div></div><div><h3>Results</h3><div>Maximum occlusal height loss and mean profile loss were analyzed. The molar restorations showed the highest mean values of maximum occlusal height loss after 12 (0.76 mm) and 24 (1.25 mm) months. The anterior restorations showed the lowest wear rates. In general, 123 restorations (35%) had material wear &gt;0.5 mm and were classified as fractured after 24 months of clinical application. Most of the nonfractured restorations experienced localized material wear between 0.11 mm and 0.35 mm, whereas mean profile loss values varied between 0.05 mm and 0.11 mm.</div></div><div><h3>Conclusions</h3><div>Three-dimensionally printed, noninvasive restorations manufactured from a ceramic-reinforced composite resin material showed considerable material wear after 2 years of clinical function, and the material appears suitable only for interim restorations.</div></div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"134 3","pages":"Pages 662-669"},"PeriodicalIF":4.8,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143970793","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":"Relationship between sleep bruxism and masticatory performance in healthy adults: A cross-sectional study","authors":"Mireia Ustrell-Barral DDS ,&nbsp;Carla Zamora-Olave DDS, PhD ,&nbsp;Laura Khoury-Ribas DDS, PhD ,&nbsp;Bernat Rovira-Lastra DDS, PhD ,&nbsp;Jordi Martinez-Gomis DDS, PhD","doi":"10.1016/j.prosdent.2025.03.029","DOIUrl":"10.1016/j.prosdent.2025.03.029","url":null,"abstract":"<div><h3>Statement of problem</h3><div>Bruxism may have positive clinical consequences, but whether it contributes to masticatory function remains unclear.</div></div><div><h3>Purpose</h3><div>The purpose of this clinical study was to clarify the relationship between sleep bruxism and masticatory performance in young adults with healthy dentitions and to determine the roles of occlusal force, dental occlusion, temporomandibular disorders (TMDs), and jaw symptoms.</div></div><div><h3>Material and methods</h3><div>Ninety-seven dental students with healthy dentitions participated in this cross-sectional study (median age, 21.9 years; 84 women). Sleep bruxism was assessed at the dental level as the relative peeled area of a BruxChecker worn for 3 nights. Occlusal contact area and maximum occlusal force were measured using silicone transillumination and the Innobyte system. Frequencies of bruxism-related jaw symptoms and TMD were determined using the BruxScreen and diagnostic criteria for TMD protocols. Masticatory performance was assessed by masticating bagged silicone for 20 cycles and calculating the masticatory performance index as the percentage of silicone in weight that passed a 3.15-mm sieve. Bivariate and multiple linear regression analyses were performed, followed by moderated mediation modeling that considered the relative peeled area as a predictor, masticatory performance index as an outcome, and sex as a covariate (α=.05).</div></div><div><h3>Results</h3><div>Relative peeled area showed a bivariate positive correlation with the masticatory performance index (<em>P</em>&lt;.05), but this was not significant in the stepwise multiple regression model (<em>P</em>&gt;.05). Moderated mediation analysis revealed the relative peeled area exerted a positive indirect effect on masticatory performance via the occlusal force and occlusal contact area, which functioned as serial mediators. This indirect effect was not significant in participants with TMD pain and frequent jaw symptoms (<em>P</em>&gt;.05).</div></div><div><h3>Conclusions</h3><div>Sleep bruxism may enhance masticatory performance in healthy dentate adults without TMD pain or bruxism-related jaw symptoms. This effect is primarily mediated by an increase in occlusal force and an enlargement of the occlusal contact area.</div></div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"134 3","pages":"Pages 712-722"},"PeriodicalIF":4.8,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143973023","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":"Complete arch implant scans with standard scan bodies versus scannable healing abutments on scanning accuracy, scanning time, and number of photograms: A comparative clinical study","authors":"Miguel Gómez-Polo DDS, PhD ,&nbsp;Rocío Cascos DDS, PhD ,&nbsp;Rocío Ortega DDS, PhD ,&nbsp;Abdul B. Barmak MD ,&nbsp;Marta Revilla-León DDS, MSD, PhD","doi":"10.1016/j.prosdent.2025.03.035","DOIUrl":"10.1016/j.prosdent.2025.03.035","url":null,"abstract":"<div><h3>Statement of problem</h3><div>Digital scans for complete arch implant fixed dental prostheses are typically performed using implant scan bodies (ISBs). Scannable healing abutments may be an alternative to ISBs. However, evidence on the accuracy, scanning time, and number of photograms of digital scans using scannable healing abutments remains uncertain.</div></div><div><h3>Purpose</h3><div>The purpose of this clinical study was to evaluate the scanning accuracy, scanning time, and number of photograms of scannable healing abutments of several heights in comparison with standard ISBs.</div></div><div><h3>Material and methods</h3><div>A reference stone cast was obtained from a patient with 7 maxillary implants from a splinted open-tray conventional impression. It was digitized by using a laboratory scanner (E4 Scanner). A milled titanium bar was manufactured, and passive fit was evaluated clinically and radiographically. Three groups (n=15) were determined based on the devices used during the intraoral scanning procedure (TRIOS 4): standard ISB (Scanbody 2800) (Group STD), 5-mm height scannable healing abutment (TissueShaper 5 mm) (Group TS5), and 7-mm height scannable healing abutment (TissueShaper 7 mm) (Group TS7). The implant abutment discrepancy between the platform of the abutments of the digitized reference cast and the intraoral scans from the different groups were calculated. Maximum deviation (highest value of misfit per scan) and overall deviations (mean of all the deviations of the scan) were considered. The scanning time and number of photograms were registered. The 1-way ANOVA and Tukey tests were used to analyze trueness. The Levene test was used to analyze the precision. ANOVA and the post hoc Tukey test were used to evaluate the scanning time and numbers of photograms (α=.05).</div></div><div><h3>Results</h3><div>Significant trueness differences were found in the overall and maximum misfit among the groups (<em>P</em>&lt;.05). Significant precision discrepancies were revealed in the maximum misfit (<em>P</em>&lt;.05) but not in the overall misfit (<em>P</em>=.56). The highest deviations were in the STD group (overall: 94 ±6 µm; maximum misfit: 172 ±24 µm), followed by TS5 (overall: 72 ±10 µm; maximum misfit: 112 ±15 µm) and TS7 (overall: 63 ±9 µm; maximum misfit: 91 ±20 µm). Significant differences in scanning time and number of photograms were found between the STD group and both the TS5 and TS7 groups (<em>P</em>&lt;.01). The longest scanning time (129.9 ±16.7 s) and highest number of photograms (1322 ±150 photograms) were in the STD group in comparison with TS5 (71.7 ±10.8 s; 805 ±104 photograms) and TS7 (77.3 ±0.9 s; 764 ±119 photograms).</div></div><div><h3>Conclusions</h3><div>The tested scannable healing abutments improved the accuracy and decreased the scanning time and number of photograms in complete arch implant digital scans recorded by using the IOS assessed.</div></div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"134 3","pages":"Pages 694-703"},"PeriodicalIF":4.8,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143977398","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":"Image-guided photogrammetry accuracy: In vitro evaluation of an implant-supported complete arch digital scanning technology","authors":"Alessandro Pozzi DDS, PhD ,&nbsp;Lorenzo Arcuri DDS, PhD ,&nbsp;Andrea Laureti DDS, MSc ,&nbsp;Paolo Carosi DDS, MSc, PhD ,&nbsp;German Gallucci DDS, PhD ,&nbsp;Jimmy Londono DDS","doi":"10.1016/j.prosdent.2025.03.047","DOIUrl":"10.1016/j.prosdent.2025.03.047","url":null,"abstract":"&lt;div&gt;&lt;h3&gt;Statement of problem&lt;/h3&gt;&lt;div&gt;Complete arch digital scanning with intraoral scanners (IOSs) for implant-supported fixed dental prostheses (FDPs) is controversial with current technologies, and accuracy and consistency are insufficient. Stereophotogrammetry (SPG) may capture precise implant coordinates but unrelated to the patient anatomy. Conclusive data comparing IOS versus SPG are lacking.&lt;/div&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Purpose&lt;/h3&gt;&lt;div&gt;The purpose of this in vitro study was to investigate a novel image-guided photogrammetry (IGP) navigation technology for complete arch digital scanning with an artificial intelligence (AI) driven workflow to superimpose implant coordinates on preoperative patient data sets.&lt;/div&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Material and methods&lt;/h3&gt;&lt;div&gt;After ethical approval had been received for the use of human-derived data, complete arch casts of actual patients with 4 and 6 implants were selected from an archive. Digital scans were made with IGP and a coordinate measuring machine (CMM) to generate standard tessellation language (STL) test and reference files for each cast, which were then superimposed with a best-fit algorithm. For each implant position, linear along x- (longitudinal), y- (lateral), and z- (vertical) axes (ΔX, ΔY, ΔZ) and angular (ΔANGLE) deviations were calculated. Three-dimensional (3D) deviation (ΔEUC) was measured as the Euclidean distance. Sample size was calculated assuming ΔEUC as the primary endpoint, significance level of.05, n=84 to ensure a minimum expected difference of 120 µm (standard deviation 150 µm), and test power of.95. A univariate descriptive analysis of study variables was performed and stratified by implant number (4 versus 6). An independent samples &lt;em&gt;t&lt;/em&gt; test was used to assess whether ΔEUC and ΔANGLE differed significantly based on implant number (4 versus 6) and position on the arch (anterior versus posterior for 4-implant casts) and anterior, intermediate, and posterior for 6-implant casts) (α=.05).&lt;/div&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Results&lt;/h3&gt;&lt;div&gt;A total of 26 complete arch casts, mandibular (n=16) and maxillary (n=10) with 4 (n=15) or 6 (n=11) implants, were investigated. A total of 126 implant positions were captured with IGP technology and compared with respective references (n=26 test, n=26 reference files). Mean deviations, standard deviation, range, and 75 percentiles were calculated for ΔX (−0.05 ±29.95; −75.17 - 68.00; 22,00 µm), ΔY (0.01 ±31.65; −68.0 - 93.93; 19,18 µm), ΔZ (−0.02 ±12.95; −39.0 - 43.5; 6,76 µm), ΔEUC (43.02 ±26.24; 3.41 - 190.23; 58,21 µm), and ΔANGLE (0.43 ±0.22; 0.03 - 0.86; 0,61 degrees). Lower deviations were found in 4-implant casts ΔEUC &lt;em&gt;(P&lt;/em&gt;=.017), ΔANGLE (&lt;em&gt;P&lt;/em&gt;=.003). Implant position did not affect accuracy, with the exception of ΔANGLE on 6-implant casts, and anteriors performed worse than posteriors and intermediate implants (&lt;em&gt;P&lt;/em&gt;=.009).&lt;/div&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Conclusions&lt;/h3&gt;&lt;div&gt;Image-guided photogrammetry was feasible for implant-supported complet","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"134 3","pages":"Pages 818-828"},"PeriodicalIF":4.8,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144022862","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}