International Journal of Computerized Dentistry最新文献

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What can we expect for 2026? A personal look into the dental crystal ball. 2026年我们可以期待什么?对牙科水晶球的个人观察。
IF 2 4区 医学
International Journal of Computerized Dentistry Pub Date : 2026-04-01 DOI: 10.3290/j.ijcd.b6971612
Florian Beuer
{"title":"What can we expect for 2026? A personal look into the dental crystal ball.","authors":"Florian Beuer","doi":"10.3290/j.ijcd.b6971612","DOIUrl":"https://doi.org/10.3290/j.ijcd.b6971612","url":null,"abstract":"","PeriodicalId":48666,"journal":{"name":"International Journal of Computerized Dentistry","volume":"29 1","pages":"3-5"},"PeriodicalIF":2.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147595582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dynamic navigation system accuracy in orthodontic miniscrew insertion in the palatal vault: a prospective single-arm clinical study. 动态导航系统在腭顶微型矫治植入中的准确性:一项前瞻性单臂临床研究。
IF 2 4区 医学
International Journal of Computerized Dentistry Pub Date : 2026-04-01 DOI: 10.3290/j.ijcd.b6329377
Davide Brilli, Matteo Giansanti, Serena Bertoldo, Isabella Cauli, Michele Cassetta
{"title":"Dynamic navigation system accuracy in orthodontic miniscrew insertion in the palatal vault: a prospective single-arm clinical study.","authors":"Davide Brilli, Matteo Giansanti, Serena Bertoldo, Isabella Cauli, Michele Cassetta","doi":"10.3290/j.ijcd.b6329377","DOIUrl":"10.3290/j.ijcd.b6329377","url":null,"abstract":"<p><strong>Aim: </strong>The aim of the present study was to evaluate the accuracy of dynamic navigation (DN) in miniscrew insertion in the palatal vault by comparing the deviation between planned and placed miniscrew positions. The secondary outcome was to evaluate the correlation between the number of miniscrews inserted and both the accuracy variables and the duration of interventions.</p><p><strong>Materials and methods: </strong>Twenty-three subjects were included in the study and each had two miniscrews inserted using a DN system (46 miniscrews inserted overall). Preoperative STL and DICOM files were matched to planned miniscrews insertion and a postoperative CBCT was performed immediately afterward to measure the deviations between the planned and placed miniscrews, evaluating four variables: Entry-3D, Apex-3D, Apex-vertical, and angular deviation. The duration of intervention was also calculated. Descriptive statistics and Pearson correlation coefficient were performed; the P value was set at ≤ 0.05.</p><p><strong>Results: </strong>The mean Entry-3D deviation was 2.55 mm; the mean Apex-3D deviation was 3.11 mm; the mean Apex-vertical deviation was 0.87 mm; and the mean angular deviation was 8.50 degrees. The mean duration of the intervention was 2:75 min:sec. A statistically significant correlation was found only between the number of surgeries and the duration of the interventions, which decreased over time.</p><p><strong>Conclusions: </strong>It is possible to conclude that DN is a viable alternative to miniscrew insertion in the palatal vault even if there is a wide deviation range. There is no significant correlation between the accuracy variables and the number of surgeries. In contrast, the duration of the interventions shortens over time.</p>","PeriodicalId":48666,"journal":{"name":"International Journal of Computerized Dentistry","volume":"0 0","pages":"23-31"},"PeriodicalIF":2.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144486730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Reliability of measuring mandibular movement and condylar position using an optical jaw registration system. 使用光学下颌配准系统测量下颌运动和髁突位置的可靠性。
IF 2 4区 医学
International Journal of Computerized Dentistry Pub Date : 2026-04-01 DOI: 10.3290/j.ijcd.b6173234
Marvin Nebe, Fabian Fenske, Elisabeth Grau, Oliver Schierz, Lisa Brinkmann, Daniel R Reißmann
{"title":"Reliability of measuring mandibular movement and condylar position using an optical jaw registration system.","authors":"Marvin Nebe, Fabian Fenske, Elisabeth Grau, Oliver Schierz, Lisa Brinkmann, Daniel R Reißmann","doi":"10.3290/j.ijcd.b6173234","DOIUrl":"10.3290/j.ijcd.b6173234","url":null,"abstract":"<p><strong>Aim: </strong>The aim of the present study was to evaluate the reliability of a digital jaw registration system for measuring mandibular movement and condylar position.</p><p><strong>Materials and methods: </strong>Data on mandibular movement and condylar position were collected from a consecutively recruited sample of 20 functionally healthy adults (age range: 19-77 years; 45% female) using an optoelectronic registration system (Tizian JMA optic; zebris Medical, Isny, Germany). Participants were randomly assigned to one of two calibrated examiners, who exclusively performed the measurements for the entire study period. Condylar position was measured five times on two separate days, approximately one week apart, while mandibular movements were recorded once per appointment. The measurement results were analyzed within (intra-appointment) and compared across both measurement appointments (inter-appointment). Analysis of condylar position involved comparing the condylar positions in the resting position to the maximum intercuspation. Reliability was assessed using the intraclass correlation coefficients (ICCs).</p><p><strong>Results: </strong>For mandibular movement, ICCs indicated high reliability for mouth opening (0.95) and protrusion (0.94), with slightly lower values for laterotrusion (0.89 to 0.87), without significant differences between appointments. The condylar position showed an overall intra-appointment ICC value of 0.98. No significant differences were found within or between the examiners, intra-appointment as well as inter-appointment.</p><p><strong>Conclusions: </strong>The evaluation of mandibular movements and condylar position relative to habitual occlusion using the tested digital registration system proved to be a reliable procedure. The measurements were not significantly influenced by different examiners. The results confirm the applicability of the device in clinical settings, particularly in functional diagnostics and the digital prosthetic workflow. Although the actual benefits of the application for patients have yet to be established, the present study provides a scientific foundation for future research considering more vulnerable cohorts, particularly patients with a higher average age, reduced dentition, or the presence of temporomandibular disorders.</p>","PeriodicalId":48666,"journal":{"name":"International Journal of Computerized Dentistry","volume":"0 0","pages":"41-48"},"PeriodicalIF":2.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144042557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Preliminary insights into dental student satisfaction in flippedclassroom seminars enhanced by artificial intelligence-generated podcasts: a comparative study. 人工智能生成的播客提高了牙科学生在翻转课堂研讨会上的满意度:一项比较研究。
IF 2 4区 医学
International Journal of Computerized Dentistry Pub Date : 2026-04-01 DOI: 10.3290/j.ijcd.b6524308
Florin Eggmann, Thomas Connert, Roland Weiger, Johannes Herzog
{"title":"Preliminary insights into dental student satisfaction in flippedclassroom seminars enhanced by artificial intelligence-generated podcasts: a comparative study.","authors":"Florin Eggmann, Thomas Connert, Roland Weiger, Johannes Herzog","doi":"10.3290/j.ijcd.b6524308","DOIUrl":"10.3290/j.ijcd.b6524308","url":null,"abstract":"<p><strong>Aim: </strong>To evaluate the perceived usefulness of a flipped-classroom model that integrated podcasts generated using an artificial intelligence (AI) tool in undergraduate dental education.</p><p><strong>Materials and methods: </strong>The present within-subject, quasi-experimental study was conducted at a Swiss dental school. A cohort of 49 clinical-year dental students participated in eight conventional seminars and two flipped-classroom seminars, each covering a distinct clinical topic. In both formats, a subset of five or six students acted as instructors under the supervision of residents or faculty members. The flipped-classroom model required students to engage with AI-generated podcast summaries of research articles before in-class discussions. These podcasts were created using NotebookLM, an online platform powered by a large language model. Surveys using Likert-type scales assessed student and student instructor satisfaction, engagement, and learning preferences.</p><p><strong>Results: </strong>The surveys obtained response rates of ≥ 93.9%. The flipped-classroom model achieved high satisfaction levels among students. Compared with conventional seminars, students reported increased engagement and comprehension in the flipped-classroom format. Student instructors valued the ease of preparation and the enhanced interactivity of in-class sessions. AI-generated podcasts were rated as effective pre-class resources.</p><p><strong>Conclusions: </strong>The integration of a flipped-classroom model with AI-generated podcast resources seemed to improve student self-perception of engagement, comprehension, and satisfaction in dental education. This instructional approach may also foster critical appraisal skills for AI-generated content-an increasingly essential competence in academic and professional practice as AI tools gain prominence.</p>","PeriodicalId":48666,"journal":{"name":"International Journal of Computerized Dentistry","volume":"0 0","pages":"63-72"},"PeriodicalIF":2.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144975135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Assessment of the effectiveness of intraoral scanning in patients with maxillary defects: a clinical study. 评估口腔内扫描在上颌缺损患者中的有效性:一项临床研究。
IF 2 4区 医学
International Journal of Computerized Dentistry Pub Date : 2026-04-01 DOI: 10.3290/j.ijcd.b6198699
Deger Ongul, Bilge Gokcen-Rohlig
{"title":"Assessment of the effectiveness of intraoral scanning in patients with maxillary defects: a clinical study.","authors":"Deger Ongul, Bilge Gokcen-Rohlig","doi":"10.3290/j.ijcd.b6198699","DOIUrl":"10.3290/j.ijcd.b6198699","url":null,"abstract":"<p><strong>Aim: </strong>The aim was to evaluate the accuracy of an intraoral scanner in obtaining digital scans of maxillary defects and adjacent tissues to fabricate obturator prostheses.</p><p><strong>Materials and methods: </strong>Ten randomly selected patients who required an obturator prosthesis after maxillary resection underwent both conventional and digital impressions. Conventional impressions were obtained using traditional methods, and cast models were prepared. The cast models were digitized using a reference scanner in STL format. For the digital impression group, an intraoral scanner (Trios 5; 3Shape) was used for digital scans and virtual models were created. The data of both groups were analyzed by superimposing predetermined points using reverse engineering software (Geomagic Control; 3D Systems).</p><p><strong>Results: </strong>No significant deviations from normality (P > 0.05) were found in the predetermined points of the residual hard tissue in the STL data. No interaction was observed between the hard tissue components and the impression techniques used. However, accuracy significantly varied between overlapped points in defect parts across the two impression methods (P = 0.028).</p><p><strong>Conclusions: </strong>The use of an intraoral scanner for digitally scanning maxillary defects was less effective than conventional impression methods, performing adequately with shallow defects but facing challenges with deeper cavities. It is essential to advance these techniques and conduct clinical studies with larger patient groups to gain broader acceptance of digital impression methods for routine clinical use, particularly for deep defects.</p>","PeriodicalId":48666,"journal":{"name":"International Journal of Computerized Dentistry","volume":"0 0","pages":"33-40"},"PeriodicalIF":2.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143992146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Scannable Anatomic Formers as Part of a Digital Workflow for Full-Arch Implant Restorations. 可扫描解剖成形术作为全弓种植体修复数字化工作流程的一部分。
IF 2 4区 医学
International Journal of Computerized Dentistry Pub Date : 2026-03-20 DOI: 10.3290/j.ijcd.b6962713
Çağrı Ural, Necati Kaleli, Nurşen Şahin
{"title":"Scannable Anatomic Formers as Part of a Digital Workflow for Full-Arch Implant Restorations.","authors":"Çağrı Ural, Necati Kaleli, Nurşen Şahin","doi":"10.3290/j.ijcd.b6962713","DOIUrl":"https://doi.org/10.3290/j.ijcd.b6962713","url":null,"abstract":"<p><p>This case outlines a fully digital workflow developed to address key challenges in full-arch, implant-supported restorations. At the heart of this approach is Scanform (Short for scannable anatomic former), an innovative modular component created by Bilimplant (Bilimplant, Proimtech, Turkey). Scanform functions as both a healing abutment and a scan body, while also allowing for targeted soft tissue management and direct connection to Ti-base abutments. Additionally, a horizontal scanning cap can be fabricated and attached to the Ti-base either chairside or in the laboratory, potentially enhancing the accuracy of the digital impression. This ultimately improves clinical accuracy and streamlines the workflow. Following successful implant osseointegration, digital impressions were taken with Scanform components attached to the implants. These components stayed in place throughout the process, preserving the emergence profile and providing a foundation for fabricating a polymethylmethacrylate (PMMA) splint. This splint was used both to register the intermaxillary relationship and to verify the passive fit. It was mounted onto Ti-base abutments secured to the Scanform units and scanned using an intraoral scanner. The resulting digital data was used to design and produce monolithic zirconia restorations, which were then delivered to the patient with confirmed passive fit and proper occlusion. By eliminating the need to remove components during the impression and bite registration stages, this technique not only ensures accurate capture of emergence profiles and occlusal relationships but also enhances predictability, saves time, and significantly improves patient comfort. These advantages seem to result in a more practical and efficient solution for complex full-arch restorations.</p>","PeriodicalId":48666,"journal":{"name":"International Journal of Computerized Dentistry","volume":"0 0","pages":"0"},"PeriodicalIF":2.0,"publicationDate":"2026-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147487853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Augmented and mixed reality in implant dentistry: a scoping review exploring clinician- and patient-reported outcomes. 增强和混合现实在种植牙科:一个范围审查探索临床医生和患者报告的结果。
IF 2 4区 医学
International Journal of Computerized Dentistry Pub Date : 2026-03-10 DOI: 10.3290/j.ijcd.b6952432
Sofya Sadilina, Alexey Unkovskiy, Ronald Jung, Marc Balmer, Tim Joda
{"title":"Augmented and mixed reality in implant dentistry: a scoping review exploring clinician- and patient-reported outcomes.","authors":"Sofya Sadilina, Alexey Unkovskiy, Ronald Jung, Marc Balmer, Tim Joda","doi":"10.3290/j.ijcd.b6952432","DOIUrl":"https://doi.org/10.3290/j.ijcd.b6952432","url":null,"abstract":"<p><strong>Aim: </strong>This scoping review aims to explore current trends in the scientific literature on clinician- and patientreported outcomes, as well as the feasibility of augmented reality (AR) and mixed reality (MR) technologies in implant-related dentistry and to assess future perspectives.</p><p><strong>Methods: </strong>Following the Joanna Briggs Methods Manual for Scoping Reviews the research question was formulated using the \"Population\" (P), \"Concept\" (Cpt), and \"Context\" (Cxt) framework. Any type of clinician-, patient- or investigator-reported outcomes was designated as P, the use of AR or MR in clinical settings as Cpt, and implant-related dentistry and prosthodontics served as Cxt. A comprehensive electronic search was conducted in PubMed, Embase, Web of Science, and CENTRAL for articles published up to April 16th, 2025. Two authors independently performed the screening, full-text analysis, and data extraction. Descriptive statistics and narrative synthesis were used to analyse the obtained data.</p><p><strong>Results: </strong>The electronic search identified 1258 titles after removing duplicates. Eight studies, involving 98 participants were included. Of these, three articles focused on overall digital workflows, three manuscripts on implant placement, one study on treatment planning and the remaining one on intraoral scanning. AR was utilized in four studies, MR devices were analyzed in three articles, and one trial utilized both technologies. Clinician-reported outcome measures were assessed in six studies, most commonly focusing on accuracy and time-efficiency. Patient-reported outcome measures were evaluated in one randomized controlled trial.</p><p><strong>Conclusions: </strong>This scoping review highlights the growing interest in augmented and mixed reality technologies in implant dentistry. More studies have focused on clinician-reported outcomes, particularly related to the accuracy of implant placement and workflow integration. However, patient-reported outcomes remain underexplored. Preliminary findings suggest that AR and MR technologies are feasible and may increase workflow efficiency. Further research is needed to fully evaluate the impact of AR and MR technologies across the entire digital workflow in implant dentistry and to better understand benefits from both clinical and patient perspectives.</p>","PeriodicalId":48666,"journal":{"name":"International Journal of Computerized Dentistry","volume":"0 0","pages":"0"},"PeriodicalIF":2.0,"publicationDate":"2026-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147436897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
5-Year Clinical Outcomes of Three-Unit Posterior Zirconia- Ceramic Fixed Dental Prostheses: A Randomized Trial Comparing Manually and CAD/CAM Layered Veneering. 三单元后牙氧化锆-陶瓷固定修复体的5年临床结果:一项比较手工和CAD/CAM分层贴面的随机试验。
IF 2 4区 医学
International Journal of Computerized Dentistry Pub Date : 2026-03-09 DOI: 10.3290/j.ijcd.b6951842
Alexis Ioannidis, Marc Balmer, Kevser Pala, Albert Mehl, Andreas Bindl
{"title":"5-Year Clinical Outcomes of Three-Unit Posterior Zirconia- Ceramic Fixed Dental Prostheses: A Randomized Trial Comparing Manually and CAD/CAM Layered Veneering.","authors":"Alexis Ioannidis, Marc Balmer, Kevser Pala, Albert Mehl, Andreas Bindl","doi":"10.3290/j.ijcd.b6951842","DOIUrl":"https://doi.org/10.3290/j.ijcd.b6951842","url":null,"abstract":"<p><strong>Aim: </strong>This randomized controlled trial compared the 5-year survival and complication rates of three-unit fixed zirconia dental prostheses (FDPs) veneered with CAD/CAM ceramic (group CAD) versus manually layered ceramics (group LAY).</p><p><strong>Material and methods: </strong>Conducted at the University of Zurich, the study enrolled 57 patients requiring posterior FDPs, randomized to either group CAD or LAY. The CAD group received zirconia frameworks veneered with CAD/CAM-fabricated lithium disilicate ceramic, while the LAY group had manually veneered feldspathic ceramic. Follow-ups occurred at 6 months, 1, 3, and 5 years, with evaluations of survival, technical and biological complications. Categorical variables, such as technical and biological outcomes based on modified USPHS criteria, were analyzed using chi-squared tests or Fisher's exact tests to determine significant differences between the test and control groups. Survival and success rates of FDPs were estimated using Kaplan-Meier survival analysis, and the log-rank test was used to compare survival curves between the two groups. Statistical significance was set at p < 0.05.</p><p><strong>Results: </strong>After 5 years, survival rates were 95.7% for LAY and 88.1% for CAD, with no significant difference. Technical and biological complications were similar across groups. Chipping, which presents one of the observed technical complications, was more extensive in the LAY group, whereas CAD group chippings were smaller and manageable by polishing.</p><p><strong>Conclusions: </strong>Both zirconia FDPs veneered with CAD/CAM lithium disilicate ceramic and manually layered feldspathic ceramic exhibit comparable 5-year survival and complication rates.</p>","PeriodicalId":48666,"journal":{"name":"International Journal of Computerized Dentistry","volume":"0 0","pages":"0"},"PeriodicalIF":2.0,"publicationDate":"2026-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147391206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Accuracy of automated editing and remeshing algorithms in a cloud-native intraoral scanner: An in vitro study across six scanning extents. 云原生口腔内扫描仪中自动编辑和重新网格算法的准确性:一项跨越六个扫描范围的体外研究。
IF 2 4区 医学
International Journal of Computerized Dentistry Pub Date : 2026-01-13 DOI: 10.3290/j.ijcd.b6828601
Leandro Passos, Sergio Meiga, Taiseer A Sulaiman, Tariq Alsahafi, Adalberto B Vasconcellos
{"title":"Accuracy of automated editing and remeshing algorithms in a cloud-native intraoral scanner: An in vitro study across six scanning extents.","authors":"Leandro Passos, Sergio Meiga, Taiseer A Sulaiman, Tariq Alsahafi, Adalberto B Vasconcellos","doi":"10.3290/j.ijcd.b6828601","DOIUrl":"10.3290/j.ijcd.b6828601","url":null,"abstract":"<p><strong>Aim: </strong>Evaluate the effects of cloud-based automated editing on scan accuracy in six scenarios: Unilateral Minor Span (UMS), Bilateral Minor Span (BMS), Segmented Minor Anterior (SMA), Segmented Extended Anterior (SEA), Extended Arch (EA), and Complete-Arch (CA).</p><p><strong>Materials and methods: </strong>A typodont was scanned in six scenarios (432 scans, n = 36 per group). Reference scans were obtained using a laboratory scanner. A cloud-native intraoral scanner was used for control (no editing) and experimental scans (automated editing). Accuracy was assessed by comparing both types of scans to master reference scans using metrology software. Data analysis was performed using the Mann-Whitney U test at α=0.05.</p><p><strong>Result: </strong>For trueness, experimental groups outperformed controls in UMS (7.41 μm vs. 7.84 μm, p = 0.011), SMA, SEA, and EA (SMA: 2.93 μm vs. 3.97 μm, SEA: 1.78 μm vs. 2.69 μm, EA: 1.73 μm vs. 2.28 μm, p < 0.001). No difference was observed in BMS (p = 0.727), and CA showed lower trueness (7.71 μm vs. 6.84 μm). For precision, experimental groups outperformed controls in BMS, SMA, SEA, and EA (BMS: 1.23 μm vs. 2.26 μm, SMA: 1.55 μm vs. 2.63 μm, SEA: 3.04 μm vs. 5.17 μm, EA: 1.11 μm vs. 2.88 μm, p < 0.001). No significant difference was found in UMS (p = 0.628), and CA showed lower precision (4.31 μm vs. 1.82 μm).</p><p><strong>Conclusion: </strong>Automated editing and remeshing improved accuracy in complex scanning scenarios (SMA, SEA, EA) but had limited effects in simpler scenarios (UMS, BMS). Full-arch scans (CA) without proper landmarks should be avoided.</p>","PeriodicalId":48666,"journal":{"name":"International Journal of Computerized Dentistry","volume":"0 0","pages":"0"},"PeriodicalIF":2.0,"publicationDate":"2026-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145960457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Positioning accuracy and posttreatment changes in the mandibular arch after insertion of a CAD/CAM titanium retainer. 植入CAD/CAM钛固位器后下颌弓的定位精度和治疗后的变化。
IF 2 4区 医学
International Journal of Computerized Dentistry Pub Date : 2025-12-11 DOI: 10.3290/j.ijcd.b5951470
Carmen Ulrike Schmid-Herrmann, Talisa Schwieder, Baerbel Kahl-Nieke, Till Koehne
{"title":"Positioning accuracy and posttreatment changes in the mandibular arch after insertion of a CAD/CAM titanium retainer.","authors":"Carmen Ulrike Schmid-Herrmann, Talisa Schwieder, Baerbel Kahl-Nieke, Till Koehne","doi":"10.3290/j.ijcd.b5951470","DOIUrl":"10.3290/j.ijcd.b5951470","url":null,"abstract":"<p><strong>Aim: </strong>Fixed retention is the method of choice for permanent stabilization of the treatment outcome. In recent years, CAD/CAM techniques have been developed to produce retainers with high precision and tension-free fit. The aim of the present retrospective study was to evaluate the suitability of a semi-industrial retainer manufacturing process (office-based construction, external laboratory manufacturing) in terms of positioning accuracy and posttreatment changes.</p><p><strong>Materials and methods: </strong>The accuracy of 41 retainers that were digitally designed and produced from a titanium plate by water jet cutting was analyzed. The patient received the retainer through fixation with dental flosses, without using a transfer tray. The position in the mouth after insertion was compared with the virtual setup using 3D software for superimposition. Intraoral scans of 25 CAD/CAM retainers and 25 0.0175-inch hand-bent retainers were evaluated after 1 year of usage. Measurements included width between the canines, the angle between the lateral incisors, and the angle of contact between the canines and the lateral incisors.</p><p><strong>Results: </strong>The largest and significant positioning deviations occurred in the vertical position, whereas positional changes in the horizontal and sagittal were small. The CAD/CAM retainers and the hand-bent retainers showed similar and minimal posttreatment alterations, which were not statistically significant.</p><p><strong>Conclusion: </strong>Semi-industrial CAD/CAM titanium retainers offer good positioning accuracy in the mandible even without a transfer tray. Increased deviations between planned and actual position only occur in the vertical plane. In addition, these retainers offer good retention properties with minimal posttreatment changes, making them suitable for permanent retention.</p>","PeriodicalId":48666,"journal":{"name":"International Journal of Computerized Dentistry","volume":"0 0","pages":"351-360"},"PeriodicalIF":2.0,"publicationDate":"2025-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143053970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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