Orthodontics & Craniofacial Research最新文献

{"title":"Management of Paediatric Obstructive Sleep Apnoea: From a Multidisciplinary to an Interdisciplinary Care Model.","authors":"Maryam Arab, Yasmeen S El Ansari, Rafael Pelayo, Audrey Yoon","doi":"10.1111/ocr.12930","DOIUrl":"https://doi.org/10.1111/ocr.12930","url":null,"abstract":"<p><p>The objective of this study is to offer a comprehensive overview of paediatric obstructive sleep apnoea (OSA), a prevalent condition characterised by intermittent upper airway obstruction that impairs both ventilation and sleep. The design of the study was a literature review using an electronic search. The study extensively reviews the pathophysiology, epidemiology, sequelae and diagnostic approaches of paediatric OSA. It highlights the role of various healthcare professionals in the management of this disorder, with each specialist providing unique contributions to the diagnosis, treatment and ongoing management of OSA. The current state of sleep teams managing OSA is multidisciplinary, including sleep physicians, pulmonologists and otolaryngologists (ENT surgeons), each contributing distinct expertise. This review contrasts a multidisciplinary approach, which relies on separate expert contributions, with an interdisciplinary model that emphasises integrated, collaborative decision-making for comprehensive, patient-centred care. This review focuses on the interactions between dental and medical professionals, as other papers will provide more detailed insights into the roles of other specialists, such as myofunctional therapists, nutritionists and others. In conclusion, the evolution from a multidisciplinary to an interdisciplinary care model marks a significant development in clinical practice, enhancing cooperation and shared decision-making among healthcare professionals, thereby improving the quality of life for paediatric patients with OSA.</p>","PeriodicalId":19652,"journal":{"name":"Orthodontics & Craniofacial Research","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143972331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechanical Force Induces Osteogenic Differentiation of Murine Induced Pluripotent Stem Cells via TGF-β Signalling","authors":"Jeeranan Manokawinchoke,&nbsp;Phoonsuk Limraksasin,&nbsp;Chalida N. Limjeerajarus,&nbsp;Nuttapol Limjeerajarus,&nbsp;Lakshman P. Samaranayake,&nbsp;Hiroshi Egusa,&nbsp;Thanaphum Osathanon","doi":"10.1111/ocr.12933","DOIUrl":"10.1111/ocr.12933","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objectives</h3>\u0000 \u0000 <p>Mechanical forces are pivotal in regulating various cellular responses, particularly in periodontal ligament and bone. However, the effects of mechanical force are contingent upon several factors, including force types, duration, magnitude and the differentiation stage of the cells. The present study investigated the impact of intermittent compressive force (ICF) on osteogenic differentiation in murine gingiva-derived induced pluripotent stem cells (miPS).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Materials and Methods</h3>\u0000 \u0000 <p>Adherent retinoic acid-treated miPS were subjected to ICF in a serum-free medium for 24 h. Real-time polymerase chain reaction, western blot analysis and immunofluorescence staining were employed to evaluate mRNA and protein expression patterns. In vitro mineralisation was assessed using alizarin red S staining.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Our findings revealed that ICF treatment induced the expression of osteogenic markers, including <i>Runx2</i>, <i>Col1a1</i>, <i>Opn</i> and <i>Dlx5</i>. Furthermore, ICF promoted the release of extracellular adenosine triphosphate (ATP) at 24 h. Pretreatment with ICF increased in vitro mineralisation, while ATP priming did not enhance mineralisation in adherent retinoic acid-treated miPS. A TGF-β inhibitor attenuated the ICF-upregulated <i>Runx2</i>, <i>Col1a1</i>, <i>Opn</i> and <i>Dlx5</i> as well as the ICF-induced in vitro mineralisation.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>Collectively, our results suggest that ICF can induce osteogenic differentiation of adherent retinoic acid-treated miPS, mediated through TGF-β signalling. Eventually, such information could be of value in controlling iPS responses during regenerative treatment applications.</p>\u0000 </section>\u0000 </div>","PeriodicalId":19652,"journal":{"name":"Orthodontics & Craniofacial Research","volume":"28 5","pages":"809-819"},"PeriodicalIF":1.7,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144031050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Accuracy and Time Efficiency of Automated Tooth Segmentation in Dental Imaging—A Systematic Review and Meta-Analysis","authors":"Neeraj Kumar Dudy,&nbsp;Shubhnita Verma,&nbsp;Prasad Chitra","doi":"10.1111/ocr.12924","DOIUrl":"10.1111/ocr.12924","url":null,"abstract":"<div>\u0000 \u0000 <p>This systematic review examined the accuracy and efficiency of AI-based automated tooth segmentation methods compared to manual or ground truth techniques. A comprehensive search was conducted in MEDLINE (via PubMed), the Cochrane Central Register of Controlled Trials, ScienceDirect, SciELO, LILACS, the German National Library of Medicine, IEEE Xplore, Web of Science and grey literature sources (OpenGrey) up to 1 January 2024, without restrictions. The Quality Assessment Tool for Diagnostic Accuracy Studies-2 (QUADAS-2) was used to evaluate the risk of bias in the included studies. Forty-two studies were included in the systematic review, of which 37 were included in the meta-analysis. Sensitivity and specificity values ranged from 0.75 to 1 and 0.85 to 1, respectively, indicating good segmentation accuracy. Comparisons of the dice segmentation coefficient between AI and manual methods showed no significant difference (SMD = 0.05, <i>p</i> = 0.9), whereas ground truth AI algorithms outperformed proposed AI algorithms (SMD = 2.42, <i>p</i> &lt; 0.00001). The Hausdorff distance revealed no significant difference between AI and manual methods, but proposed AI algorithms demonstrated superiority over ground truth AI algorithms (SMD = −5.76, <i>p</i> &lt; 0.01). AI algorithms were also significantly faster than manual methods. Current evidence suggests that AI algorithms for tooth segmentation perform comparably to manual segmentation. Moreover, recent automated algorithms have shown superior performance compared to ground truth algorithms. However, these findings should be interpreted cautiously due to the very low certainty of evidence, largely attributed to bias and high heterogeneity. Further well-designed and rigorously reported studies are necessary.</p>\u0000 </div>","PeriodicalId":19652,"journal":{"name":"Orthodontics & Craniofacial Research","volume":"28 5","pages":"752-771"},"PeriodicalIF":1.7,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144008092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Lingual Ultrasound Study of Speech in Patients With Cleft Lip and Palate Following Orthognathic Surgery.","authors":"Griffin Lowry, Erika Rezende Silva, Jeannene Matthews, Ayumi Shoji, Timothy Turvey, George Blakey, David Zajac, Jeff Mielke, Laura Anne Jacox","doi":"10.1111/ocr.12926","DOIUrl":"10.1111/ocr.12926","url":null,"abstract":"<p><strong>Objectives: </strong>This study evaluated the effects of orthognathic surgery on speech of Class III ('underbite') patients with repaired cleft lip and palate (CLP) through ultrasound imaging, aerodynamic assessment and articulatory analyses before and after surgery to evaluate how surgery impacts articulation, velopharyngeal (VP) function and hypernasality.</p><p><strong>Materials and methods: </strong>Tongue gestures of five Class III patients with repaired CLP, five Class III patients without CLP and five Class I controls were visualised through ultrasound imaging pre- and post-surgery. Tongue Dorsum Excursion Index and Tongue Constraint Position Index (TCPI) were calculated using ultrasound, and VP insufficiency (VPI) indices were measured using pressure flow assessment and compared with qualitative-perceptual ratings by Speech-Language Pathologists (SLPs). Linear mixed-effects models were used to test for significant post-operative changes in Dorsum Excursion Index and TCPI among consonants. Pressure flow measures are expected to estimate VP gap size during speech using PERCI-SARS.</p><p><strong>Results: </strong>Patients with CLP had significantly lower Dorsum Excursion Index for /k/ before front (p = 0.001) and back vowels (p < 0.001). TCPI revealed consistently lower values for patients with CLP than controls and Class III patients, with inter- and intra-speaker variation for all consonants. Pressure flow data of two patients with CLP showed evidence of VPI and altered nasality post-surgery.</p><p><strong>Conclusion: </strong>Patients with CLP present with lower Dorsum Excursion Index and TCPI when compared to controls, suggesting more anterior tongue positioning. Dorsum Excursion Index and TCPI can be used to understand tongue shape and movement changes, potentially elucidating functional effects of jaw surgery on speech. Dorsum Excursion Index and pressure flow data indicate increased compensatory articulations and VPI after orthognathic surgery for patients with CLP, impacting speech.</p>","PeriodicalId":19652,"journal":{"name":"Orthodontics & Craniofacial Research","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12355422/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144013367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fluorescent Orthodontic Adhesive With APTES-Modified ZnO Quantum Dots: Bond Strength, Cytocompatibility, and Clinical Feasibility","authors":"Jiarong Yan,&nbsp;Heng Sun,&nbsp;Zongshuai Liu,&nbsp;Zhonglu Yang,&nbsp;Ting Luo,&nbsp;Xiaozhu Liao,&nbsp;Nannan Wang,&nbsp;Hong He,&nbsp;Fang Hua","doi":"10.1111/ocr.12932","DOIUrl":"10.1111/ocr.12932","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Introduction</h3>\u0000 \u0000 <p>To develop a fluorescent adhesive by incorporating 3-aminopropyltriethoxysilane (APTES)-modified ZnO quantum dots (A-ZnOQDs) and to evaluate its bond strength, rheological properties, cytocompatibility, and removal performance.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>ZnOQDs were modified with APTES and blended with commercial orthodontic adhesive to construct the fluorescent adhesive, which was divided into four groups (0, 2, 4, and 6 wt.%). Shear bond strength (SBS) was measured with a universal testing machine. Rheological properties were evaluated through a dynamic shear rheometer (DSR) test. Cytocompatibility was assessed with a CCK-8 kit. Bracket bonding and debonding procedures were performed on a head simulator. Adhesive removal effectiveness during bonding and debonding procedures was assessed.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>There was no significant difference in SBS among four groups (0%: 10.06 ± 4.81 MPa, 2%: 8.98 ± 3.70 MPa, 4%: 10.88 ± 5.12 MPa, 6%: 8.09 ± 3.43 MPa, <i>p</i> &gt; 0.05). DSR displayed that the rheological curves of group-2% and group-4% were close to that of group-0%. CCK-8 assay indicated cell vitality did not differ among group-0%, group-2%, and group-4% (<i>p</i> &gt; 0.05). Group-4% showed less excess adhesive area (0%: 1.81 ± 1.58 mm², 4%: 0.95 ± 1.33 mm², <i>p</i> = 0.0465), less remnant adhesive area (0%: 0.73 ± 0.79 mm², 4%: 0.07 ± 0.21 mm², <i>p</i> = 0.0002), more time taken in removing excess adhesive (0%: 40.76 ± 6.44 s, 4%: 47.19 ± 8.40 s, <i>p</i> = 0.0046), and similar time taken in removing remnant adhesive (0%: 40.04 ± 10.05 s, 4%: 43.54 ± 10.18 s, <i>p</i> = 0.2365).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Fluorescent orthodontic adhesive containing 4 wt.% of A-ZnOQDs with reliable SBS, rheological properties, and cytocompatibility was successfully constructed, with proof that it can be recognised and removed efficiently.</p>\u0000 </section>\u0000 </div>","PeriodicalId":19652,"journal":{"name":"Orthodontics & Craniofacial Research","volume":"28 4","pages":"713-722"},"PeriodicalIF":2.4,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143811933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bone Thickness and Density at the Infra Zygomatic Crest and Lateral Wall of Pyriform Aperture in Various Age Groups: A Cone Beam Computed Tomography-Based Study","authors":"Tehreem Fatima,&nbsp;Waqar Jeelani,&nbsp;Maheen Ahmed,&nbsp;Mirza Ezaaf Shuja","doi":"10.1111/ocr.12925","DOIUrl":"10.1111/ocr.12925","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objectives</h3>\u0000 \u0000 <p>The objective of this study was to determine and compare the bone thickness and density at the infra-zygomatic crest (IZC) and the lateral wall of the pyriform aperture (PA) among various age groups.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>A cross-sectional study was conducted on the cone beam computed tomography (CBCT) images of 90 subjects divided into three equal groups, that is, adolescents, post-adolescents and adults. At IZC, the bone thickness and density were measured at four sections and at four vertical levels (Z1 to Z4) with Z1 at the apical level of M1 and every next level moving superiorly with an increment of 2 mm. At PA, bone thickness and density were measured at two sections (3 mm and 6 mm from outer border of lateral wall of PA). Measurements were compared between males and females using an independent sample t-test and among three age groups using a one-way ANOVA test.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>At IZC, bone thickness was greatest at the Z1 level and mesial to and above the mesiobuccal root of M1. At PA, maximum bone thickness was found at 6 mm from the lateral wall of PA. The mean bone thickness and density at all sections of IZC were generally more in adults. However, at PA, bone thickness was found to be greater in adolescents.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Maximum bone thickness at IZC was found just above and mesial to the mesiobuccal root of M1. At the lateral wall of PA, more bone thickness was found at 6 mm from the outer border of PA. Bone thickness generally increased with age at IZC and decreased with age at the lateral wall of PA.</p>\u0000 </section>\u0000 </div>","PeriodicalId":19652,"journal":{"name":"Orthodontics & Craniofacial Research","volume":"28 4","pages":"693-705"},"PeriodicalIF":2.4,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143764533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clinical Effectiveness of Upper Vacuum-Formed Retainers Used in A Dual Retention Protocol After Orthodontic Treatment: Retainer Failures and Upper Arch Stability. A 24-Month Prospective Cohort Study","authors":"Małgorzata Bilińska,&nbsp;Monika Sankiewicz,&nbsp;Arwa Gera,&nbsp;Paolo M. Cattaneo,&nbsp;Marie A. Cornelis","doi":"10.1111/ocr.12928","DOIUrl":"10.1111/ocr.12928","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objectives</h3>\u0000 \u0000 <p>This prospective cohort study aimed to evaluate the number of failures of upper vacuum-formed retainers (VFRs) used in a dual retention protocol and the capacity to maintain upper arch stability 24 months after debonding.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Material and Methods</h3>\u0000 \u0000 <p>At the end of orthodontic treatment (T0), 93 consecutive patients (12–25 years) received an upper VFR for night-time use and a fixed retainer. The patients were seen 12 (T1) and 24 months (T2) after debonding. At both time points, the status of the VFR was checked. Intraoral scans were taken at T2. Upper arch dimensions were measured at both time points and compared with paired sample t-tests.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Eighty-three and 78 patients attended the T1 and T2 controls respectively. At T1, VFR failures were recorded in 28 out of 83 patients; and at T2, in 36 of 78 patients. The most common type of failure was occlusal wear (T1: 10, T2: 23). Three VFRs were fractured at T1 and 7 at T2. The upper intercanine width did not change statistically significantly from T0 to T2 (mean difference: −0.06 mm, SD: 0.74 mm, <i>p</i> = 0.242). Interpremolar distance (mean difference: 0.49 mm, SD: 0.97 mm, <i>p</i> &lt; 0.001), intermolar distance (mean difference: 0.46 mm, SD: 1.49 mm, <i>p</i> = 0.003) and arch length (mean difference: −0.30 mm, SD: 0.71 mm, <i>p</i> &lt; 0.001) were statistically significantly different between T0 and T2, but the difference was not clinically relevant.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>VFRs present a high failure rate at 24 months, mostly because of occlusal wear and fracture. Upper arch dimensions remained fairly stable 2 years post-treatment.</p>\u0000 </section>\u0000 </div>","PeriodicalId":19652,"journal":{"name":"Orthodontics & Craniofacial Research","volume":"28 4","pages":"687-692"},"PeriodicalIF":2.4,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143764536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An Evaluation of Using Detailing Instruments on the Final Clear Aligner for the Alignment in the Aesthetic Zone-A Randomised Clinical Trial.","authors":"Damla Arslan, Murat Tozlu","doi":"10.1111/ocr.12927","DOIUrl":"https://doi.org/10.1111/ocr.12927","url":null,"abstract":"<p><strong>Objective: </strong>The aim of this study is to evaluate the clinical efficiency of detailing instruments on the need for refinement in a group of young adults treated with clear aligners.</p><p><strong>Materials and methods: </strong>The study sample included 74 intraoral scans from patients who were treated in an academic setting with in-house clear aligners and needed refinement. After the first set of aligners was used, an intraoral scan was taken (T1). These scans were used as a control sample (n = 37). At the same appointment, the final aligner was activated using detailing instruments for the expression of rotation, torque and inclination according to the needs of the case. Second scans were taken 10 days later (T2) and treated as a study sample (n = 37). The two scans were then imported to Nemocast software and digital setups were performed for ideal finishing. The primary outcome variable was the number of refinement aligners.</p><p><strong>Results: </strong>Of the 222 teeth in total, 52.2% received activations for rotation (78.4%); inclination (6.9%) and torque (14.7%). Reduction in the number of aligners (T1-T2) was 1.62 ± 1.53 in the study sample; 1.93 ± 1.64 in subgroup A; 2.40 ± 1.71 in subgroup B (p = 0.000; p = 0.002; p = 0.007, respectively). Intergroup comparisons revealed that the difference between groups was not significant.</p><p><strong>Conclusion: </strong>This study is a pioneer to investigate the effects of detailing instruments in clear aligner practice. This intervention created a clinically small but statistically significant decrease in the number of refinement aligners when used on the final aligner only. Applications in earlier stages can have more prominent effects on the expression of movements, which might be the subject for future investigations.</p>","PeriodicalId":19652,"journal":{"name":"Orthodontics & Craniofacial Research","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143753859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"MARPE Improves Long-Term Stability of Maxillary Expansion in Adolescents.","authors":"Ezgi Cansu Firinciogullari, Aslihan Ertan Erdinc, Tugce Celenk-Koca, David Cruz Walma, Sercan Akyalcin","doi":"10.1111/ocr.12922","DOIUrl":"https://doi.org/10.1111/ocr.12922","url":null,"abstract":"<p><strong>Objective (s): </strong>To evaluate and compare the long-term skeletal and dentoalveolar outcomes of conventional rapid palatal expansion (RPE) and mini-screw-assisted RPE (MARPE) in adolescent patients.</p><p><strong>Materials and methods: </strong>Fourteen patients were recruited from a cohort of patients previously treated with RPE or MARPE appliances with a history of > 10 years post-treatment. Of the initial larger sample population, these 14 patients agreed to return for a follow-up appointment. For the study purposes, the cone-beam computed tomography (CBCT) images acquired at pre-treatment (T0), after maxillary expansion and 6 months of retention (T1), and 10-year post-treatment follow-up period (T2) were utilized. The study variables obtained from the CBCT images comprised skeletal width, palatal suture assessment, buccal and palatal bone thickness, dental tipping, and alveolar bone bending measurements. Statistical comparisons were performed using Mann-Whitney U tests. The level of significance was set at p < 0.05 for all tests.</p><p><strong>Results: </strong>MARPE resulted in more stable skeletal expansion and fewer dental side effects compared to RPE treatment. Patients treated with RPE exhibited an 80% relapse in buccal maxillary width at the premolar after 10 years, compared to a 30% relapse among those treated with MARPE. Several additional parameters showed enhanced relapse in the RPE group compared to the MARPE group, suggesting MARPE treatment results in improved long-term dentoskeletal stability.</p><p><strong>Conclusion: </strong>Treatment with MARPE resulted in more stable long-term skeletal expansion and fewer dental side effects compared to conventional RPE 10 years after the completion of orthodontic treatment.</p>","PeriodicalId":19652,"journal":{"name":"Orthodontics & Craniofacial Research","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143701022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Material and Processing Lag Time on Radiant Energy Penetration and Modulus of 3D-Printed Indirect Bonding Jig Materials.","authors":"Megan Meyer, Kamal Awad, Baylie Subjeck, Joe C Ontiveros, Venu G Varanasi, F Kurtis Kasper","doi":"10.1111/ocr.12923","DOIUrl":"10.1111/ocr.12923","url":null,"abstract":"<p><strong>Objective: </strong>To investigate the effect of the time between 3D printing and post-print processing (lag time) on the modulus and radiant energy penetration of 3D-printed indirect bonding jig materials.</p><p><strong>Materials and methods: </strong>Three 3D-printed resins (Formlabs IBT Resin, SprintRay IDB 2, Pro3dure GR-18.1 IB) were tested for three lag times (0, 16 and 64 h; n = 10 per group). Radiant energy penetration was measured using a power meter, and Vickers hardness was assessed for composites cured through the samples. Mechanical properties were evaluated using uniaxial testing and three-point bending.</p><p><strong>Results: </strong>Both the resin type and lag time significantly affected radiant energy penetration and composite hardness. The effect of lag time varied by resin. Young's modulus from uniaxial testing showed significant changes only for the Pro3dure resin, while three-point bending indicated significant flexibility changes only for the SprintRay IDB 2 resin.</p><p><strong>Conclusions: </strong>The resin type and the lag time before post-print processing influence important functional properties of 3D-printed indirect bonding jig materials, including radiant energy penetration and flexibility. These findings suggest that optimising lag time may enhance the performance of 3D-printed indirect bonding jig materials.</p>","PeriodicalId":19652,"journal":{"name":"Orthodontics & Craniofacial Research","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12353878/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143674423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}