Three-dimensional assessment of nasal changes after maxillary advancement with impaction using stereophotogrammetry Objective: To evaluate the changes in the nose in three dimensions after Le Fort I osteotomy in patients with skeletal Class III malocclusion. Methods: The subjects were 40 adult patients (20 females and 20 males; mean age, 20.3 ± 3.0 years; range, 17.0 to 31.1 years) who underwent one-piece Le Fort I osteotomy with maxillary advancement and impaction treatment for maxillary hypoplasia. The mean maxillary advancement was 4.56 ± 1.34 mm, and the mean maxillary impaction was 2.03 ± 1.04 mm. Stereophotogrammetry was used to acquire three-dimensional images before and at least 6 months after surgery. Results: Alare (Al) and alare curvature (Ac) points had moved vertically and anterolaterally postoperatively. A significant increase was observed in the nasal ala width and alar base width, and no changes were noted in the columellar length, nasolabial angle, and nasal area. There was a significant relationship between maxillary impaction and nasal ala width and horizontal and sagittal positions of the bilateral Al and Ac. The only relationship found was between maxillary advancement and postoperative sagittal location of the subnasale and pronasale. Conclusions: Nasal soft tissues were highly affected by the vertical movement of the maxilla; however, the soft tissue responses were individual-dependent.

Objective: The aim of this study was to evaluate the content and quality of YouTube videos about distraction osteogenesis (DO) in the craniofacial region. Methods: The term ''distraction osteogenesis'' was searched on YouTube. After sorting by relevance, 80 videos were selected from 128 search results for analysis of general characteristics, primary purpose, information reliability, audiovisual quality, global quality scale (GQS), and viewers' interaction index. Viewing rate formulae were calculated for each YouTube video. The Mann-Whitney U test and Spearman correlation coefficient were used for statistical analysis. Results: We classified 22 (27.5%) of the 80 videos as moderate/ high-content and 58 (72.5%) as low-content. Most YouTube videos about DO were uploaded by doctors (45%) and information about DO was the most covered topic (61%). Videos from commercial companies had significantly higher GQS scores than videos uploaded by other groups (P ¼ 0.040). In low-information content videos, GQS was highly correlated with the number of likes, whereas in moderate/high-content videos it was highly correlated with viewing rates. Conclusions: YouTube is insufficient source of information about DO and academic institutions have more responsibility in developing this situation and directing patients to reliable social media or Internet sources.

W literaturze można znaleźć wiele badań na temat stosowania różnych pomiarów i metod dotyczących położenia dolnej i górnej szczęki w płaszczyźnie przednio-tylnej i pionowej. Cel. Celem badania była ocena zależności pomiędzy poszczególnymi parametrami stosowanymi w określaniu przednio-tylnej relacji szczęk u osób z różnymi typami pionowego wzrostu twarzy. Materiał i metody. Do badania włączono cefalogramy boczne 150 pacjentów z różnymi typami pionowego wzrostu twarzy [z niskim kątem (ang. Low-Angle, LA), prawidłowym kątem (ang. Norm-Angle, NA) i wysokim kątem (ang. High-Angle, HA)] i wadami zgryzu

Objective: The aim of this study was to compare the measurements performed with digital manual (DM) cephalometric analysis and automatic cephalometric analysis obtained from an online artificial intelligence (AI) platform, according to different sagittal skeletal malocclusions. Methods: Cephalometric radiographs of 105 randomly selected individuals (mean age: 17.25 ± 1.87 years) were included in this study. Dolphin Imaging software was used for DM cephalometric analysis, and the WebCeph platform was used for AI-based cephalometric analysis. In total, 10 linear and 12 angular measurements were evaluated. The paired t-test, one-way ANOVA test, and intraclass correlation coefficient tests were used to evaluate the differences between the two methods. The level of statistical significance was set at p< 0.05. Results: Except for SNB, NPog, U1.SN, U1.NA, L1-APog, I/I, and LLE parameters, all other parameters presented significant differences between the two methods (p< 0.05). While there was no difference (p> 0.05) in both SNA and SNB measurements between the two methods in the Class I malocclusion group, there was a difference between both methods in the Class II malocclusion group. Meanwhile, only the SNA in the Class III malocclusion group was different (p< 0.05). The ANB angle differed significantly in all three malocclusion groups. For both methods, all parameters except CoA and CoGn were found to have good correlation. Conclusion: Although significant differences were detected in some measurements between the two cephalometric analysis methods, not all differences were clinically significant. The AI-based cephalometric analysis method needs to be developed for more specific malocclusions.

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Objectives: This study aimed to analyze the case reports published in the past 5 years in orthodontic journals in the Web of Science (WOS) indexes and evaluate the trending topics. Material and Methods: Following a search conducted by entering the keyword “orthodontics” in the WOS Master Journal List search site, four journals in the Science Citation Index (SCI) and five journals in the Emerging Science Citation Index (ESCI) were included in the study, and case report articles published in these journals between 2016 and 2020 were examined. The case reports were analyzed by examining each issue of each journal published during these years. In addition, frequently studied topics were examined under seven headings. Results: Only nine of the 16 journals in the list of related journals have published case reports in the past 5 years. The largest number of articles appeared in the American Journal of Orthodontics and Dentofacial Orthopedics for the SCI group and International Orthodontics for the ESCI group. When the frequently examined topics were evaluated, it was determined that the highest number of articles was fixed orthodontic treatments (53.4%), orthognathic surgery (18.9%), multidisciplinary treatments (6.5%), and treatments for individuals with general health problems (6.5%). Conclusion: The number of case reports published has gradually increased in the past 5 years. The number of articles in the journals included in the SCI is higher. The subject variety of case reports is too great to be limited to a narrow field.