International Orthodontics最新文献

{"title":"Three-dimensional evaluation of the airway morphology after miniscrew-supported en masse retraction in adult bimaxillary protrusion patients by using cone beam computed tomography: A single-arm clinical trial","authors":"Rehab A. Khalil ,&nbsp;Walid S. Salem","doi":"10.1016/j.ortho.2024.100936","DOIUrl":"10.1016/j.ortho.2024.100936","url":null,"abstract":"<div><h3>Objective</h3><div>This study aimed to assess the changes in the pharyngeal airway morphology after premolar extraction and maximum anchorage retraction of the anterior segments in adult bimaxillary protrusion patients by using CBCT.</div></div><div><h3>Material and methods</h3><div>Twenty-one subjects (mean age 23.8<!--> <!-->±<!--> <!-->4.6 years) requiring extraction of four first premolars and en masse retraction of the anterior segments using maximum anchorage participated in the study from July 2022 to May 2024 with an average treatment duration of 19.9 months. CBCT scans were taken before treatment (pre) and after en masse retraction (post). Airway volume was measured by using Relu software. The pre- and post-CBCT scans were superimposed by using Romexis 1 software. The cross-sectional area (CSA) was measured at the level of the hard palate, soft palate, and epiglottis. The most constricted area (MCA) was recorded. The hyoid bone position was evaluated by using 5 linear measurements. The upper and lower incisor angulations to the Frankfort horizontal plane (FH) were measured before and after retraction. Paired <em>t</em>-test was used to analyse the measurements and correlation analyses were made using Spearman's rank-order correlation coefficient (rs). The significance level was set at <em>P</em> <!-->&lt;<!--> <!-->0.05 within all tests.</div></div><div><h3>Results</h3><div>Twenty-one participants (16 females, 5 males) followed the inclusion criteria and enrolled in the analysis. There were no significant differences in airway volume, cross-sectional areas, or hyoid bone position between before treatment and after en masse retraction (<em>P</em> <!-->&gt;<!--> <!-->0.05). There was a significant retraction of the incisors after treatment (<em>P</em> <!-->&lt;<!--> <!-->0.001). The change in the most constricted area had a large positive correlation with the change in the airway volume (rs<!--> <!-->=<!--> <!-->0.509*) and the area of the soft palate (rs<!--> <!-->=<!--> <!-->0.653*).</div></div><div><h3>Conclusion</h3><div>Maximum anchorage retraction had no significant effect on airway volume, cross-sectional area, or hyoid bone position.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"23 1","pages":"Article 100936"},"PeriodicalIF":1.8,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142539902","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":"Successful management and stability of maxillary class II dentoalveolar protrusion with extractions of upper second and lower third molars, using en-masse distalization and vertical control with bone miniscrews: Adult case report with 7-year follow-up","authors":"Beike Wang ,&nbsp;Juan Qi","doi":"10.1016/j.ortho.2024.100932","DOIUrl":"10.1016/j.ortho.2024.100932","url":null,"abstract":"<div><div>This case report describes the successful long-term management of a 19-year-old female patient presenting with a skeletal Class II pattern, mild anterior open bite, and mandibular retrognathia. The orthodontic treatment approach involved the distal movement of the maxillary and mandibular dentitions through the extraction of the maxillary second molars and mandibular third molars, combined with the use of extra-alveolar infrazygomatic crest (IZC) and buccal shelf (BS) miniscrews for anchorage. The treatment outcome achieved a stable, well-aligned dentition with ideal intercuspation and an improved facial profile. The 7-year post-treatment records demonstrated a stable occlusion and satisfactory facial aesthetics, confirming the long-term stability of this treatment approach. This case report supports that en-masse distalization of the entire dentition by extracting the upper second molars and lower third molars, coupled with bone miniscrew anchorages, can be a favourable alternative to the conventional premolar extraction approach for the correction of borderline Class II malocclusions.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"23 1","pages":"Article 100932"},"PeriodicalIF":1.8,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142510125","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":"Morphological characteristics of the palate according to mid-palatal suture maturational stage on cone-beam computed tomography images: A cross-sectional study","authors":"Leda Kroselj Zevnik ,&nbsp;Jasmina Primozic","doi":"10.1016/j.ortho.2024.100935","DOIUrl":"10.1016/j.ortho.2024.100935","url":null,"abstract":"&lt;div&gt;&lt;h3&gt;Introduction&lt;/h3&gt;&lt;div&gt;Besides the mid-palatal suture maturation stage, the morphology of the palate might also play a role in the effectiveness of miniscrew insertion planning or effectiveness of palatal expansion.&lt;/div&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Objectives&lt;/h3&gt;&lt;div&gt;The aim was to assess the mid-palate length, height and surface area according to the mid-palatal suture maturation stage and its correlation to the maturity of the transverse palatine suture on cone-beam computed tomography (CBCT) maxillary images in a consequently selected group of subjects.&lt;/div&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Material and methods&lt;/h3&gt;&lt;div&gt;High-resolution CBCT images of 100 subjects (56 females, 44 males), aged 33.9&lt;!--&gt; &lt;!--&gt;±&lt;!--&gt; &lt;!--&gt;22.7 years, were selected. The images were clustered according to the mid-palatal suture maturation stage (stages B, C, D, and E) and 25 images per stage group were retrieved. The length, heights (at 2&lt;!--&gt; &lt;!--&gt;mm intervals) and surface area of the mid-palate were measured from the posterior border of the incisal foramen to the posterior nasal spine, and the maturity of the transverse palatine suture was recorded.&lt;/div&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Results&lt;/h3&gt;&lt;div&gt;No between-stage-group differences were seen for mid-palate length, while heights and surface areas were significantly different between maturational stages. The mid-palate height was significantly smaller in maturational stages D and E groups (5.65&lt;!--&gt; &lt;!--&gt;±&lt;!--&gt; &lt;!--&gt;1.55&lt;!--&gt; &lt;!--&gt;mm and 5.77&lt;!--&gt; &lt;!--&gt;±&lt;!--&gt; &lt;!--&gt;1.70&lt;!--&gt; &lt;!--&gt;mm, respectively) than in groups B and C (6.97&lt;!--&gt; &lt;!--&gt;±&lt;!--&gt; &lt;!--&gt;1.82&lt;!--&gt; &lt;!--&gt;mm and 7.00&lt;!--&gt; &lt;!--&gt;±&lt;!--&gt; &lt;!--&gt;1.53&lt;!--&gt; &lt;!--&gt;mm, respectively). However, differences were significant only distally to the sixth mm measurement point. The surface area was significantly different among groups, denoting higher values for stage B and C (1.82&lt;!--&gt; &lt;!--&gt;±&lt;!--&gt; &lt;!--&gt;0.55&lt;!--&gt; &lt;!--&gt;cm&lt;sup&gt;2&lt;/sup&gt; and 1.86&lt;!--&gt; &lt;!--&gt;±&lt;!--&gt; &lt;!--&gt;0.41&lt;!--&gt; &lt;!--&gt;cm&lt;sup&gt;2&lt;/sup&gt;, respectively), compared to stage D and E groups (1.53&lt;!--&gt; &lt;!--&gt;±&lt;!--&gt; &lt;!--&gt;0.38&lt;!--&gt; &lt;!--&gt;cm&lt;sup&gt;2&lt;/sup&gt; and 1.57&lt;!--&gt; &lt;!--&gt;±&lt;!--&gt; &lt;!--&gt;0.54&lt;!--&gt; &lt;!--&gt;cm&lt;sup&gt;2&lt;/sup&gt;, respectively). A significant negative but poor correlation was seen between mid-palate total average height, surface area and mid-palatal suture stage (rho&lt;!--&gt; &lt;!--&gt;=&lt;!--&gt; &lt;!--&gt;–0.278, &lt;em&gt;P&lt;/em&gt; &lt;!--&gt;=&lt;!--&gt; &lt;!--&gt;0.005 and rho&lt;!--&gt; &lt;!--&gt;=&lt;!--&gt; &lt;!--&gt;–0.222, &lt;em&gt;P&lt;/em&gt; &lt;!--&gt;=&lt;!--&gt; &lt;!--&gt;0.027, respectively). Moreover, a very strong to moderate positive correlation (rho&lt;!--&gt; &lt;!--&gt;=&lt;!--&gt; &lt;!--&gt;0.847, &lt;em&gt;P&lt;/em&gt; &lt;!--&gt;&lt;&lt;!--&gt; &lt;!--&gt;0.001, rho&lt;!--&gt; &lt;!--&gt;=&lt;!--&gt; &lt;!--&gt;0.739, &lt;em&gt;P&lt;/em&gt; &lt;!--&gt;&lt;&lt;!--&gt; &lt;!--&gt;0.001) was seen between age and the maturational stage of the mid-palatal and transverse palatine sutures, respectively. Both the mid-palatal and transverse palatine sutures maturity stages were positively and very strongly correlated (rho&lt;!--&gt; &lt;!--&gt;=&lt;!--&gt; &lt;!--&gt;0.839, &lt;em&gt;P&lt;/em&gt; &lt;!--&gt;&lt;&lt;!--&gt; &lt;!--&gt;0.001).&lt;/div&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Conclusions&lt;/h3&gt;&lt;div&gt;The height and surface","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"23 1","pages":"Article 100935"},"PeriodicalIF":1.8,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142510123","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":"Degree and pattern of expansion of commercially available and custom-fabricated miniscrew-assisted rapid palatal expansion systems in young adult patients: A retrospective comparative analysis","authors":"Bushra Sufyan Almaqrami ,&nbsp;Majedh Abdo Ali Al-Somairi ,&nbsp;Waseem Saleh Al-Gumaei ,&nbsp;Barakat Al-Tayar ,&nbsp;Ehab A. Abdulghani ,&nbsp;Maged S. Alhammadi ,&nbsp;Zhijian Liu ,&nbsp;Hui Xiong ,&nbsp;Hong He","doi":"10.1016/j.ortho.2024.100931","DOIUrl":"10.1016/j.ortho.2024.100931","url":null,"abstract":"<div><h3>Background</h3><div>Miniscrew-assisted rapid palatal expansion (MARPE) has emerged as a noteworthy non-surgical method for treating maxillary transverse deficiency, especially in young adult patients. Studies have shown that MARPE can achieve significant dentoalveolar and skeletal expansion with long-term stability. The primary objective of this study was to assess the skeletal changes in the maxillary transverse dimension, and the secondary objective was to evaluate the dentoalveolar changes, following the use of a commercially available maxillary skeletal expander (MSE) in comparison to a custom-fabricated MARPE.</div></div><div><h3>Methods</h3><div>This retrospective study involved 50 young adult patients diagnosed with skeletal transverse maxillary deficiency, divided into two groups (MSE and custom MARPE), with 25 patients in each group. Pre- and post-expansion cone-beam computed tomography (CBCT) images were used to analyse skeletal, alveolar, and dental changes.</div></div><div><h3>Results</h3><div>Both MSE and custom MARPE groups achieved significant skeletal and dentoalveolar expansion. However, the custom MARPE group exhibited notably greater expansion in several metrics; in the axial plane, the average expansion was 4.68<!--> <!-->±<!--> <!-->1.35<!--> <!-->mm and 3.37<!--> <!-->±<!--> <!-->1.53<!--> <!-->mm at the anterolateral maxillary walls and 3.99<!--> <!-->±<!--> <!-->1.35<!--> <!-->mm and 3.28<!--> <!-->±<!--> <!-->1.19<!--> <!-->mm at the greater palatine foramen region for custom MARPE and MSE groups, respectively (<em>P</em> <!-->&lt;<!--> <!-->0.01). In coronal plane, the custom MARPE showed significantly greater transverse expansion at the mid-nasal, basal, alveolar, and dental levels.</div></div><div><h3>Conclusion</h3><div>Both MARPE systems are effective for maxillary expansion. However, the custom-fabricated MARPE may offer more favourable results, with broader and more uniform skeletal expansion. This can be especially beneficial for patients with specific anatomical requirements.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"23 1","pages":"Article 100931"},"PeriodicalIF":1.8,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142510122","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":"Orthodontic bracket failure rate after bonding with and without primer – A systematic review and meta-analysis","authors":"Thangabalu Rajamuthu ,&nbsp;Anjana Rajagopalan ,&nbsp;Anusuya Venkatachalapathy ,&nbsp;Prabhakar Krishnan ,&nbsp;Naveen Munusamy ,&nbsp;Udhayan Asokan","doi":"10.1016/j.ortho.2024.100934","DOIUrl":"10.1016/j.ortho.2024.100934","url":null,"abstract":"<div><h3>Objective</h3><div>To compare the difference in failure rates between orthodontic brackets bonded with light-cured primer and those bonded without primer.</div></div><div><h3>Material and methods</h3><div>An electronic search of five databases and additional manual searches were performed until January 2024. Randomized and prospective non-randomized controlled trials directly comparing the bracket failure rate with and without primer. Two authors independently collected study characteristics by extracting outcome data from pre-defined sheets. After evaluating the risk of bias, the odds ratio and 95% confidence intervals (CIs) were calculated with random-effects models.</div></div><div><h3>Results</h3><div>Four studies were evaluated using qualitative and quantitative analysis. The analysis included data from 199 patients (1691 brackets with primer and 1646 brackets without primer). Random effects of pooled meta-analysis demonstrated statistically significant differences in the bracket failure rates (odds ratio<!--> <!-->=<!--> <!-->1.50, <em>p</em> <!-->=<!--> <!-->0.010, [95% CI 1.10 to 2.05]). The risk of failure was 1.5 times greater when brackets were bonded without primer.</div></div><div><h3>Conclusion</h3><div>The results should be interpreted in the context of the limited sample size, even though there was a substantial difference in the failure rates of brackets with and without a primer, favouring the use of a primer. Furthermore, the validity of the finding may be limited by potential variables such as patient factors, clinician expertise, and isolation. More extensive research is required to validate these findings (PROSPERO CRD42024593134).</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"23 1","pages":"Article 100934"},"PeriodicalIF":1.8,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142510124","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":"Anterior maxillary distraction for cleft palate associated severe hypoplastic maxillary Class III deformity during adolescence – A case report","authors":"Harpreet Singh ,&nbsp;Dhirendra Srivastava ,&nbsp;Pranav Kapoor ,&nbsp;Poonam Sharma ,&nbsp;Sonal Mishra ,&nbsp;Lokesh Chandra ,&nbsp;Raj Kumar Maurya","doi":"10.1016/j.ortho.2024.100927","DOIUrl":"10.1016/j.ortho.2024.100927","url":null,"abstract":"<div><div>This report chronicles the case of an adolescent female with cleft palate associated severe hypoplastic maxillary Class III deformity. Treatment involved anterior maxillary segmental distraction osteogenesis (AMSDO) in conjunction with pre-distraction and post-distraction orthodontics. Following pre-distraction orthodontics, AMSDO was performed using a customized Hyrax distractor assembly. Post-distraction orthodontics helped stabilize distraction outcomes and finalize occlusion. Post-treatment, midface deficiency and prognathic profile improved dramatically with establishment of acceptable interincisal relationship and well-balanced functionally interdigitated occlusion. Three-year follow-up showed excellent morphologic and functional stability. AMSDO is a viable modality that contributes to effective stomatological rehabilitation of patients with cleft maxillary hypoplasia.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"22 4","pages":"Article 100927"},"PeriodicalIF":1.8,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142477251","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":"Efficacy of fluoride varnish containing casein phosphopeptide-amorphous calcium phosphate application and diode laser irradiation on white spot lesions remineralization: An in vitro study","authors":"Mona El Sayed ,&nbsp;Rahma ElNaghy ,&nbsp;Toka Hesham Fathi ,&nbsp;Reem Zeid","doi":"10.1016/j.ortho.2024.100929","DOIUrl":"10.1016/j.ortho.2024.100929","url":null,"abstract":"<div><h3>Background/Objectives</h3><div>The prevention of white spot lesions (WSLs) during orthodontic treatment with fixed appliances is of paramount importance to orthodontists. Numerous non-invasive techniques have been extensively researched to effectively manage WSLs. The objective of this study was to investigate the efficacy of MI varnish application, diode laser irradiation and their combination on remineralization of WSLs.</div></div><div><h3>Materials and methods</h3><div>In this in vitro study, 40 enamel samples were divided randomly into 4 groups based on the applied treatment after demineralization. In Group I, MI varnish was applied to the enamel samples for a period of 7 days. In Group II, samples were irradiated with diode laser. In Group III, MI varnish was applied for 7 days, followed by diode laser irradiation. Whereas Group IV (control group) received no treatment and samples were stored in artificial saliva for 7 days. Microhardness assessments were performed at baseline, after demineralization and following the different treatment protocols. A representative sample from each group was randomly selected for scanning electron microscopy (SEM) analysis. One-way ANOVA, repeated measures ANOVA, and Tukey's Post Hoc tests were used for statistical analysis, with significance set at <em>P</em> <!-->≤<!--> <!-->0.05.</div></div><div><h3>Results</h3><div>All treatment groups demonstrated significantly higher mean microhardness values compared to the control group (<em>P</em> <!-->&lt;<!--> <!-->0.05). Group 1 (MI varnish) had a final microhardness mean value of 193.50 (<em>P</em> <!-->&lt;<!--> <!-->0.001), Group 2 (diode laser) recorded the highest final mean of 214.20 (<em>P</em> <!-->=<!--> <!-->0.018), and Group 3 (MI varnish<!--> <!-->+<!--> <!-->diode laser) had a mean of 203.93 (<em>P</em> <!-->=<!--> <!-->0.011). SEM observations supported these findings by showing enhanced surface morphology in the treatment groups.</div></div><div><h3>Conclusions</h3><div>MI varnish application, laser irradiation, and their combination demonstrated enhanced microhardness of artificially demineralized enamel, highlighting their effectiveness in remineralization of WSLs.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"23 1","pages":"Article 100929"},"PeriodicalIF":1.8,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142438028","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":"A 3D finite element analysis of biomechanical effects on teeth and bone during true intrusion of anteriors using miniscrews","authors":"Ankit Bharadwaj ,&nbsp;Sachin Ahuja ,&nbsp;Japjee Uppal ,&nbsp;Eenal Bhambri ,&nbsp;Renu Sewta ,&nbsp;Seema Gupta","doi":"10.1016/j.ortho.2024.100925","DOIUrl":"10.1016/j.ortho.2024.100925","url":null,"abstract":"<div><h3>Purpose</h3><div>The primary objective of this study was to investigate the biomechanical effects and stresses on bone, periodontal ligament (PDL), cementum and displacement along X-, Y- and Z-axis during true intrusion of incisors using mini-implants with Finite Element Analysis; the secondary objective of the study was to find out the best method for anterior intrusion in clinical practice to treat anterior deep bite malocclusions.</div></div><div><h3>Materials and methods</h3><div>A 3D finite element method was used to simulate true anterior intrusion with sliding mechanics using mini-implants. Two groups were modelled with mini-implants placed distal to lateral incisors for Model 1, and below the anterior nasal spine (ANS) for Model 2, to achieve intrusion. von Mises stress, principal stress on PDL and alveolar bone, displacements in all 3 planes were determined.</div></div><div><h3>Results</h3><div>Amongst the modalities compared in the present study, the stresses on bone and PDL were showing best behavior for mini-implants placed distal to lateral incisors (Model 1). The teeth showed controlled tooth movement in Model 1.</div></div><div><h3>Conclusion</h3><div>Maximum stress was found in the cortical bone and in the PDL. Nature of the stress changed from compressive to tensile from cervical area to root apex, concentrating mainly at the apical area. Amongst the modalities compared, the best controlled tooth movements for anterior intrusion to treat anterior deep bite malocclusions, was for mini-implants placed distal to lateral incisors (Model 1).</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"23 1","pages":"Article 100925"},"PeriodicalIF":1.8,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142406929","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":"Mini-implant assisted orthodontic correction of lip and occlusal cant of a young adult: A case report","authors":"Sanjeev Verma,&nbsp;Vinay Kumar,&nbsp;Raj Kumar Verma,&nbsp;Chaman Lal,&nbsp;Naveen K. Subbaiah,&nbsp;Satinder Pal Singh","doi":"10.1016/j.ortho.2024.100900","DOIUrl":"10.1016/j.ortho.2024.100900","url":null,"abstract":"<div><div>Patients seek orthodontic treatment to correct unesthetic and asymmetric smiles because even a minimal cant of 4 is well perceived by a layperson. This case report describes a nonsurgical orthodontic management of iatrogenic occlusal canting in a 22-year-old female, who developed it during a previous orthodontic treatment for an impacted canine. The iatrogenic cant was corrected by the intrusion of the left mandibular segment followed by extrusion of left maxillary segment using mini-implants. Mini-implants were inserted in the mandibular left buccal segment (the first between canine and premolar, the second between the second premolar and first permanent molar), and the intruded mandibular posteriors were stabilized with the help of stainless-steel ligature (0.012″ SS) tied to the mini-implant. The expected correction of the occlusal cant, asymmetric gingival and tooth exposure, and soft tissue lip cant were corrected resulting in a significant improvement in smile aesthetics at the end of orthodontic treatment. After a follow-up period of 24<!--> <!-->months, the results were stable.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"22 4","pages":"Article 100900"},"PeriodicalIF":1.8,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142394131","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":"Assessing AudaxCeph®’s cephalometric tracing technology versus a semi-automated approach for analyzing severe Class II and Class III skeletons","authors":"Katherine O’Friel ,&nbsp;Andrew Chapple ,&nbsp;Richard Ballard ,&nbsp;Paul Armbruster","doi":"10.1016/j.ortho.2024.100926","DOIUrl":"10.1016/j.ortho.2024.100926","url":null,"abstract":"<div><h3>Objective</h3><div>To evaluate the accuracy and precision of the AudaxCeph® fully automated software in identifying cephalometric landmarks on lateral cephalograms of Class II and Class III skeletal relationships, comparing its performance against experienced orthodontists using manual tracing within the same software environment.</div></div><div><h3>Material and methods</h3><div>Sixty cephalograms depicting severe Class II or Class III skeletal discrepancies were assessed by two board-certified orthodontists and AudaxCeph®’s artificial intelligence automatic tracing software. Among these, 40 cases were classified as Class II and 20 as Class III. An X–Y axis was established at the bottom left corner of each cephalogram, and subsequent X and Y coordinates for the landmarks were exported to Excel. Thirteen cephalometric landmarks were identified and used for comparing manual and automatic tracing methods, with no alteration of landmark positions post-tracing. Measures of the X coordinate, Y coordinate, and radial distance for each landmark were compared using <em>t</em>-tests for equivalence with a 2<!--> <!-->mm margin, both against AudaxCeph®’s positions and intra-operator reliability.</div></div><div><h3>Results</h3><div>Analysis revealed that while most operator measurements closely approximated AudaxCeph® values, discrepancies exceeding 2<!--> <!-->mm were notable at Gonion and Porion landmarks. Slight variability was noted in one instance during intra-examiner evaluation at the Gonion landmark.</div></div><div><h3>Conclusions</h3><div>This study concludes that AudaxCeph®’s artificial intelligence-driven automatic tracing of cephalograms offers a reliable and accurate method for orthodontic treatment planning across various skeletal types and severities. On average, it exhibits minimal discrepancies exceeding 2<!--> <!-->mm compared to manual operators, with notable variations observed primarily at the Gonion and Porion landmarks. While AudaxCeph® is an acceptable tool for cephalometric landmark location, it's accuracy still require the practitioner to verify some less reliable landmark locations.</div></div>","PeriodicalId":45449,"journal":{"name":"International Orthodontics","volume":"22 4","pages":"Article 100926"},"PeriodicalIF":1.8,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142394130","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}