International Orthodontics最新文献

{"title":"Four-year follow-up comparison of three pre-surgical infant orthopedic methods on mandibular arch morphology in unilateral cleft lip and palate: A retrospective study","authors":"Puneet Batra ,&nbsp;Ajay Kubavat ,&nbsp;Dhruv Ahuja","doi":"10.1016/j.ortho.2025.101013","DOIUrl":"10.1016/j.ortho.2025.101013","url":null,"abstract":"<div><h3>Objective</h3><div>To evaluate the impact of presurgical infant orthopedics (PSIO) on mandibular dimensions and inter arch relation at 4 years follow-up comparing three different PSIO methods (modified Grayson's technique, Dynacleft nasal elevator, OrthoAligner NAM with Dynacleft nasal elevator) to no-nasoalveolar molding (NAM) in infants with unilateral cleft lip and palate (UCLP).</div></div><div><h3>Methodology</h3><div>A retrospective cohort study was conducted on non-syndromic UCLP patients treated with either PSIO or no-PSIO between 2018 and 2019, with a 4-year follow-up. The cohort was divided into four groups of 13 patients each: group 1 received PSIO with the modified Grayson's technique, group 2 received PSIO with the Dynacleft nasal elevator, group 3 was treated with OrthoAligner NAM combined with Dynacleft nasal elevator, and group 4 received no PSIO. Mandibular transverse width and interarch relation were assessed using the Modified Huddart and Bodenham (MBH) index. Descriptive statistics, ANOVA, and the Chi-square test were used to compare mandibular dimensions and interarch relationships across the groups.</div></div><div><h3>Results</h3><div>A total of 52 patients (29 boys, 23 girls) were included in the study. Mandibular arch dimensions showed no significant differences across groups (<em>P</em> <!-->&gt;<!--> <!-->0.05), with inter-canine (Grayson: 26.31<!--> <!-->mm, Dynacleft: 27.42<!--> <!-->mm, OrthoAligner: 28.27<!--> <!-->mm, no-NAM: 27.15<!--> <!-->mm), anterior arch (33.36–33.50<!--> <!-->mm), inter-molar (36.50–36.77<!--> <!-->mm), and posterior arch widths (42.36–42.61<!--> <!-->mm). Crossbite and interarch occlusal relationships showed comparable distribution among all groups, with no significant variations (<em>P</em> <!-->&gt;<!--> <!-->0.05).</div></div><div><h3>Conclusion</h3><div>The study found no significant differences in mandibular transverse arch dimensions or inter arch occlusal relationships among different PSIO modalities, indicating that the choice of PSIO modality did not substantially impact arch width or occlusion interarch relation.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"23 4","pages":"Article 101013"},"PeriodicalIF":1.8,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143894601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of feldspathic veneer surface treatments on colour stability after debonding of orthodontic brackets: An in vitro study","authors":"Flavio Copello ,&nbsp;Kevin Barnes ,&nbsp;Cecilia Sued Leao ,&nbsp;Jasmine Hariri ,&nbsp;Proma Ahmed ,&nbsp;Guilherme Anziliero Arossi ,&nbsp;Eduardo Franzotti Sant’Anna","doi":"10.1016/j.ortho.2025.101011","DOIUrl":"10.1016/j.ortho.2025.101011","url":null,"abstract":"<div><h3>Objectives</h3><div>To analyse the colour stability of feldspathic porcelain veneers treated with different surface preparation methods after bonding and debonding orthodontic brackets.</div></div><div><h3>Material and methods</h3><div>Twenty-five feldspathic porcelain veneers samples were divided into groups according to surface treatment procedures: (S) glaze-layer retained; (SHF) hydrofluoric acid etch; (SOXA) sandblasting; (SB) diamond burs; (C) control. Specimens were primed using silane and brackets were bonded. After removal of brackets, colour stability (NBS score National Bureau of Standards Score) was determined following coffee staining for 21 days. Group comparisons at each time point (T0 and T1) were performed using one-way ANOVA, followed by Tukey's HSD test for pairwise comparisons when a significant difference was detected. To evaluate the effect of time within each surface treatment group (T0 vs. T1), a paired <em>t</em>-test was performed.</div></div><div><h3>Results</h3><div>No significant interclass difference was identified between overall colour stability for the four test groups (S, SHF, SOXA and SB). All test groups showed a statistically significant increase in colour change compared to the control.</div></div><div><h3>Conclusions</h3><div>Surface treatment resulted in a significant decrease in colour stability with no statistical difference between treatments. Regardless of surface preparation method, bonding and debonding of orthodontic bracket results in decreased colour stability of feldspathic porcelain veneers.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"23 4","pages":"Article 101011"},"PeriodicalIF":1.8,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143882557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative evaluation of novel framework-supported 3-dimensional facial scanning using smartphone device with freehand facial scanning in patients seeking orthodontic treatment: A cross-sectional study","authors":"Aditya Talwar ,&nbsp;Isha Duggal ,&nbsp;Harpreet Grewal ,&nbsp;Neha Bhutiani ,&nbsp;Navneet Singh ,&nbsp;Saurabh Kaushik","doi":"10.1016/j.ortho.2025.101012","DOIUrl":"10.1016/j.ortho.2025.101012","url":null,"abstract":"<div><h3>Introduction</h3><div>Surface anthropometric assessment of soft tissues is an ideal approach for measuring 3D facial changes with smartphone/tablet-based applications revolutionizing 3D facial acquisition. However, the scans obtained are prone to distortion and have limited repeatability due to the freehand recording of the scans in continuous image capture mode, thus also reducing their reliability. The aim was to introduce the design and operation of an innovative apparatus for acquiring 3D facial scans in a standardised, repeatable, and convenient way for young children and adults.</div></div><div><h3>Material and methods</h3><div>The apparatus presents a framework with a straight and scissor arm with the recommended dimension of 68<!--> <!-->×<!--> <!-->60<!--> <!-->×<!--> <!-->34<!--> <!-->cm with a 360-degree rotatory joint similar to wall-mounted X-ray systems used in dental offices. Facial scans of 15 patients aged between 19–25 years (mean age<!--> <!-->=<!--> <!-->23.13 years) were recorded using the two techniques (framework-supported [SF] and freehand [SWF]) Scandy Pro app in Apple iPad Pro. The scans were exported in .stl format and analysed using Meshlab and Viewbox 4 software for surface comparison, scan time, and mean absolute distance (MAD) between facial soft tissue landmarks.</div></div><div><h3>Results</h3><div>Scans using the framework (SF) showed fewer aberrations, especially in the nasolabial and periorbital areas. Zygoma R and L (0.608<!--> <!-->±<!--> <!-->1.605 and 0.503<!--> <!-->±<!--> <!-->1.191 respectively) displayed the most difference, while Point A (0.323<!--> <!-->±<!--> <!-->1.381), Pogonion (0.364<!--> <!-->±<!--> <!-->1.344), and infraorbital region R and L (0.307<!--> <!-->±<!--> <!-->0.785 and 0.362<!--> <!-->±<!--> <!-->1.089 respectively) displayed the least. With no scan interruptions, the average scan time decreased threefold to 10.14<!--> <!-->seconds for SF compared to 27.81<!--> <!-->seconds for SWF, with 12 instances of tracking loss. Superimposition analysis of SF scans shows ICC values from 0.574 to 0.882, indicating good agreement.</div></div><div><h3>Conclusion</h3><div>The proposed framework provides a reliable, accurate, and cost-effective alternative for 3D facial imaging using smartphone devices. It demonstrates high reproducibility and significant reductions in scan time and tracking loss. This apparatus could facilitate the routine clinical use of 3D facial scanning in orthodontics, offering portable and non-invasive solutions.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"23 3","pages":"Article 101012"},"PeriodicalIF":1.8,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143869656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of optimal parameters for the insertion of mini-implants at the mandibular ramus region based on cone-beam computed tomography","authors":"Qi Fan,&nbsp;Shangyou Wen,&nbsp;Xuechun Yuan,&nbsp;Xian He,&nbsp;Fan Jian,&nbsp;Yan Wang,&nbsp;Wenli Lai,&nbsp;Hu Long","doi":"10.1016/j.ortho.2025.101005","DOIUrl":"10.1016/j.ortho.2025.101005","url":null,"abstract":"<div><h3>Objective</h3><div>To determine the optimal parameters for mini-implant placement in the mandibular ramus.</div></div><div><h3>Material and methods</h3><div>Measurements were conducted on CBCT data from 50 subjects, covering five planes (OP2, OP4, OP6, OP8 and OP10), each with six sites (Site0, Site2, Site4, Site6, Site8 and Site10), and each site with five insertion angles (30°, 60°, 90°, 120°, and 150°). The data included measurements of bone depth, cortical bone thickness, canal distance, and the probability of molar interference.</div></div><div><h3>Results</h3><div>The bone volume of the mandibular ramus is sufficient for placing orthodontic mini-implants. When mini-implants were implanted at appropriate heights, sites, and angles, contact with the mandibular nerve canal and interference with maxillary molars can be avoided.</div></div><div><h3>Conclusions</h3><div>Suitable insertion height was 4–8<!--> <!-->mm above the occlusal plane. Suitable insertion site was 4–8<!--> <!-->mm medial to the external oblique ridge. Suitable insertion angle was 120–150 degrees with the anterior surface of the mandibular ramus platform.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"23 3","pages":"Article 101005"},"PeriodicalIF":1.8,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143869649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Different treatment strategies for monozygotic twins with Class II division 1 malocclusion: 10-year follow-up study","authors":"Shichao Yue ,&nbsp;Minjia Zhu ,&nbsp;Xianju Xie ,&nbsp;Zixiang Dai ,&nbsp;Kan Yu ,&nbsp;Xiaoxia Che ,&nbsp;Ye Chen ,&nbsp;Yuxing Bai ,&nbsp;Ke Zhang","doi":"10.1016/j.ortho.2025.101009","DOIUrl":"10.1016/j.ortho.2025.101009","url":null,"abstract":"<div><h3>Background</h3><div>Early-stage growth modification has been demonstrated effective in treating prepubertal patients with Class II division 1 malocclusion. Since monozygotic twins are genetically identical, environmental factors, including oral habits and treatment strategies, may contribute to different treatment outcomes. To date, few reported comparisons of different treatment strategies in monozygotic twins with Class II division 1 malocclusion exist.</div></div><div><h3>Case description</h3><div>In this case report, we compare the effects of different functional appliances and extraction strategies in a pair of prepubertal monozygotic twins. Different compliance and treatment protocols may have different effects on their early changes in facial profile. Customized treatment plans are necessary for optimal treatment outcomes. Both twins achieved favourable improvements in facial profile, and their long-term stability of functional occlusion was also maintained after a ten-year follow-up.</div></div><div><h3>Practical implications</h3><div>With the outcome of the case, we acknowledged that functional appliance therapy can affect the potentiality of mandibular growth. Individualized protocols should be approached aside from different functional appliances.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"23 3","pages":"Article 101009"},"PeriodicalIF":1.8,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143864325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comprehensive qualitative and quantitative assessment of the most suitable levels for maxillary and mandibular miniscrew insertion sites: A cross-sectional comparative study","authors":"Abeer A. Almashraqi ,&nbsp;Mohammed Sawady ,&nbsp;Essa Mohammed Beleges ,&nbsp;Ahmed Hassan Khadhi ,&nbsp;Esam Halboub ,&nbsp;Maged S. Alhammadi","doi":"10.1016/j.ortho.2025.101007","DOIUrl":"10.1016/j.ortho.2025.101007","url":null,"abstract":"<div><h3>Introduction</h3><div>To analyse the quality and quantity of inter-radicular buccal and palatal cortical bone in the maxillary and mandibular regions at the most recommended levels for miniscrew insertion sites in both sexes.</div></div><div><h3>Methods</h3><div>This retrospective, cross-sectional comparative study utilized Cone Beam Computed Tomography (CBCT) scans from 60 adult patients meeting the selection criteria. The analysis focused on Cortical Bone Thickness (CBT), Inter-radicular Space (IRS), and Relative Cortical Bone Density (RCBD) at eleven maxillary and six mandibular miniscrew insertion sites, measured at 4, 6, and 8<!--> <!-->mm from the cemento-enamel junction.</div></div><div><h3>Results</h3><div>CBT on the maxillary buccal side ranged from 0.85<!--> <!-->±<!--> <!-->0.13 to 1.32<!--> <!-->±<!--> <!-->0.14<!--> <!-->mm, with all palatal sites measuring at least 1<!--> <!-->mm. Palatal areas showed greater IRS than buccal sites, with no significant sex differences. RCBD indicated significant differences at 6<!--> <!-->mm (<em>P</em> <!-->=<!--> <!-->0.004) and 8<!--> <!-->mm (<em>P</em> <!-->=<!--> <!-->0.008), where females had higher density than males. In the mandible, CBT ranged from 1.20<!--> <!-->±<!--> <!-->0.22 to 2.63<!--> <!-->±<!--> <!-->0.36<!--> <!-->mm, with the lowest IRS in the canine-premolar region at 4<!--> <!-->mm and the highest in the molar area at 8<!--> <!-->mm. High densities were observed across levels without sex preference.</div></div><div><h3>Conclusion</h3><div>It is advisable to position orthodontic miniscrews as far as possible in the attached gingiva of the maxillary buccal and mandibular canine-premolar regions. For maxillary palatal miniscrews, preferred insertion depths are 6<!--> <!-->mm in the premolar and 4<!--> <!-->mm in the molar regions, and predrilling at 6<!--> <!-->mm is recommended in the mandibular molar region. Limited sex differences were noted.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"23 3","pages":"Article 101007"},"PeriodicalIF":1.8,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143833604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Association between nasal septum deviation and maxillary dimensions in an adult South Indian population: A retrospective observational cone-beam computed tomography study","authors":"Shifo Savio,&nbsp;Shweta Nagesh","doi":"10.1016/j.ortho.2025.101008","DOIUrl":"10.1016/j.ortho.2025.101008","url":null,"abstract":"<div><h3>Introduction</h3><div>Nasal septal deviation (NSD) is a common anatomical variation influencing nasal function and maxillary development. This study aims to evaluate the correlation between NSD and maxillary dimensions in a South Indian population using cone-beam computed tomography (CBCT). Additionally, it examines NSD severity and its effect on maxillary dimensions and malocclusion.</div></div><div><h3>Methods</h3><div>The retrospective cross-sectional study analysed CBCT data from patients with NSD aged above 18 years and of South Indian descent, collected between 2022 and 2024, who satisfied the inclusion and exclusion criteria. NSD severity was classified based on the Septal Deviation Angle (SDA) as mild (0–9°), moderate (10–15°), and severe (&gt; 15°). Maxillary parameters such as: palatal width (MPW), length (ML), palatal arch depth (PAD), intermolar width (MIMW), interpremolar width (MPMW) were measured. The association between NSD and maxillary parameters was analysed using the Pearson correlation coefficient. The analysis of variance (ANOVA) was employed to examine the transverse maxillary parameters among three groups with different severity levels.</div></div><div><h3>Results</h3><div>A total of 140 CBCTs scans were analysed based on the inclusion and exclusion criteria. A weak positive correlation was observed between SDA and PAD (<em>P</em> <!-->=<!--> <!-->0.038), DSW-PAD (<em>P</em> <!-->=<!--> <!-->0.040) and DSW-MPW (<em>P</em> <!-->=<!--> <!-->0.030). MPW was significantly reduced in moderate NSD patients compared to mild NSD (<em>P</em> <!-->=<!--> <!-->0.048). Class II malocclusion was most prevalent across all NSD severities (mild: 20%, moderate: 25%, severe: 15%).</div></div><div><h3>Conclusion</h3><div>The nasal septal deviation is associated with increased palatal depth and reduced palatal width, particularly in moderate NSD cases.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"23 3","pages":"Article 101008"},"PeriodicalIF":1.8,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143829871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of the possible synergetic effect of micro-osteoperforations and injectable platelet-rich fibrin on the rate of maxillary canine retraction of young adults: A split-mouth randomized controlled clinical trial","authors":"Hend Abul karem Abdullah Al-Haifi ,&nbsp;Ramy Abdulrahman Ali Ishaq ,&nbsp;Khaled Ahmed Mohammed Al-Jawfi ,&nbsp;Amin Mohsen Saleh Al-Ashtal ,&nbsp;Maged S. Alhammadi ,&nbsp;Abeer A. Almashraqi","doi":"10.1016/j.ortho.2025.101006","DOIUrl":"10.1016/j.ortho.2025.101006","url":null,"abstract":"<div><h3>Introduction</h3><div>This study primarily aimed to evaluate the combined impacts of micro-osteoperforations (MOPs) and injectable platelet-rich fibrin (I-PRF) on the rate of maxillary canine retraction. Additionally, it explored the side effects of the related rotation, tipping, and vertical movements.</div></div><div><h3>Material and methods</h3><div>All patients who met the eligibility criteria (Class II Division 1 malocclusion, mild to moderate crowding, bilateral Class II canines, good oral hygiene, and requiring therapeutic extraction of the maxillary first premolars) between April and December 2021 were recruited. This included 25 young adult orthodontic patients (19 females and 6 males). One side of the maxillary arch was randomly chosen to receive MOPs combined with I-PRF, forming the experimental group. In contrast, the other side received only MOPs, serving as the control group. The maxillary canine retraction rate was measured every 4 weeks over a 24-week follow-up period (T0 [before canine retraction] – T6 [after 24-week]). Additionally, canine rotation, intrusion/extrusion, and tipping were evaluated using cone-beam computed tomography (CBCT) before and after retraction at two-time points (T0 and T6). The independent <em>t</em>-test was used to compare the experimental and control groups. Comparisons between stages from T0 to T6 were completed using the t-test for paired samples and repeated measure analysis of variance (ANOVA). The <em>P</em>-values were adjusted using Bonferroni correction.</div></div><div><h3>Results</h3><div>This study analysed 25 young adult patients (19 females and 6 males; average age 20.47<!--> <!-->±<!--> <!-->4.1 years). The rate of maxillary canine retraction was significantly different between the experimental and control sides, with an overall rate of 1.25<!--> <!-->±<!--> <!-->0.28 and 0.75<!--> <!-->±<!--> <!-->0.1<!--> <!-->mm/month (<em>P</em> <!-->=<!--> <!-->0.04, <em>q</em> <!-->=<!--> <!-->0.006), respectively. This significantly faster rate occurred at T1–T2 and T4–T5 time points on the experimental compared to the control side. Canine tipping was also greater in the experimental side, at 3.89<!--> <!-->±<!--> <!-->0.19° than in the control side, at 1.80<!--> <!-->±<!--> <!-->0.12° (<em>P</em> <!-->=<!--> <!-->0.03, <em>q</em> <!-->=<!--> <!-->0.005). No significant differences were found in maxillary canine rotation, extrusion, or intrusion between the two sides.</div></div><div><h3>Conclusion</h3><div>The combination of MOPs and I-PRF demonstrated a synergistic effect, significantly accelerating orthodontic tooth movement during maxillary canine retraction within 6 months of a clinical evaluation, but also with a significant tipping movement.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"23 3","pages":"Article 101006"},"PeriodicalIF":1.8,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of quality of orthodontic treatment and determining factors that affect the quality of finishing in orthodontic graduate clinic using peer assessment rating: A retrospective case-control study study","authors":"Maria A. Ossa ,&nbsp;Katherine Tran ,&nbsp;Sasha Z. Daroga ,&nbsp;Kaylee A. Gomez ,&nbsp;Wei-En Lu ,&nbsp;Ai Ni ,&nbsp;Zongyang Sun ,&nbsp;Henry W. Fields ,&nbsp;Toru Deguchi","doi":"10.1016/j.ortho.2025.101003","DOIUrl":"10.1016/j.ortho.2025.101003","url":null,"abstract":"<div><h3>Background</h3><div>The objective of this study was to analyse recently treated orthodontic patients to evaluate the quality of treatment in the graduate orthodontic clinic at the Ohio State University and determine what factors correlate to the how cases are finished.</div></div><div><h3>Methods</h3><div>Models of 229 patients were scored using the peer assessment rating (PAR) index. The cases were divided into groups, well-finished cases, which are those that had a PAR score reduction by at least 22pts or for those that started with a score less than 22pts a final PAR score of 0 and not well-finished cases. Cephalometric data, treatment age, treatment type, treatment time, faculty, payment type, motivation, initial hygiene impression, and failed appointments were recorded. Statistical analyses completed included a multiple logistic regression.</div></div><div><h3>Results</h3><div>The total percent of cases of improvement in PAR was 45.4%, 48.5%, 6.1% for greatly improved, improved and not improved respectively. The pre-treatment upper and lower anterior alignment, overjet, overbite and midline deviation were significantly related to the quality of treatment outcome (<em>P</em> <!-->&lt;<!--> <!-->0.05). The total PAR reduction rate was similar between full-time and part-time teachers, but when categorised, it showed a difference with a decrease by a multiplicative factor of 8.200. However, this statistical difference is not significant after adjustment with other covariates (<em>P</em> <!-->=<!--> <!-->0.69).</div></div><div><h3>Conclusions</h3><div>Patients who start with more upper or lower anterior crowding, overjet, overbite, or midline deviation may be difficult to correct than cases that does not have those characteristics. Also, there may be difference between part- and full-time faculty regarding treatment efficiency in orthodontic graduate clinic.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"23 3","pages":"Article 101003"},"PeriodicalIF":1.8,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143760871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"En-masse maxillary anterior retraction to close the extraction space with fixed orthodontic appliances: A systematic review","authors":"Ziad M. Montasser ,&nbsp;Andrea Scribante ,&nbsp;Paolo Zampetti ,&nbsp;Mona A. Montasser","doi":"10.1016/j.ortho.2025.101004","DOIUrl":"10.1016/j.ortho.2025.101004","url":null,"abstract":"<div><h3>Objective</h3><div>To evaluate the evidence on the treatment results and patients’ reported outcomes of the en-masse maxillary anterior retraction technique.</div></div><div><h3>Material and methods</h3><div>Web of Science™, MEDLINE (via PubMed®), and Scopus electronic databases and reference lists of relevant studies were comprehensively searched on September 24, 2024 with no time frame limitation but, with the language limited to English. Randomized clinical trials investigating en-masse retraction in orthodontic patients who needed maxillary first premolars extraction were selected using keywords to search the titles and abstracts before a detailed reading of each full text in the next steps. Primary outcomes included rate, duration, or amount of anterior retraction and anchorage loss while secondary outcomes included positional changes in the anterior and molar teeth, root resorption of the anterior teeth, and patients’ experiences. The Cochrane Collaboration's risk of bias tool was used for risk of bias and quality assessment of the included studies.</div></div><div><h3>Results</h3><div>There were 257 articles deemed potentially suitable for the review. Removing duplicates, careful reading the titles and abstracts, and applying the inclusion/exclusion criteria left 22 articles were included. The risk of bias assessment showed 3, 7, and 12 studies of “high”, “some concerns” or “low” risk of bias respectively. En-masse retraction produced similar incisor retraction and anchorage loss in about half the time needed by the two-step mechanics. Corticotomy, micro-osteoperforation, and low level laser therapy showed positive results for accelerating en-masse retraction. while piezocision and platelet rich plasma did not. Root resorption of the incisors could increase when using mini-screws, especially infra-zygomatic mini-screws.</div></div><div><h3>Conclusions</h3><div>There is need for future RCT on the different outcomes done according to standardized methodologies. Corticotomy, micro-osteoperforation, and low-level laser showed positive results in accelerating en-masse retraction, but the clinical significance remains unclear. Rate of tooth movement was similar in piezocision, platelet-rich plasma, and the control groups. Mini-screws, especially infra-zygomatic mini-screws, increase the chance of root resorption, but the force system arrangement is crucial.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"23 3","pages":"Article 101004"},"PeriodicalIF":1.8,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143760195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}