Browsing by Author "Oyonarte, Rodrigo"
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Item 33(33, 33) Biskupovic, Fernando; Rosenberg, Flavia; Searle, Luz María; Ramírez, Pamela; Larrañaga, María Jesús; Maldonado, Sebastián; Vairetti, Carla; Oyonarte, Rodrigo; 33Background: Assessing a patient's maturation status is essential for treatment planning in dentofacial orthopedics. Dental development, as classified by Demirjian's method into eight stages, is a reliable indicator of skeletal maturity relative to the pubertal growth spurt. Automating this assessment may improve efficiency by reducing subjectivity and supporting timely orthodontic interventions. Methods: A cross-sectional study was conducted using segmented panoramic radiographs to classify the maturation stages of lower second and third molars. These classifications served as training data for machine learning models using four convolutional neural network (CNN) architectures: Xception, ResNet, MobileNet, and Inception. Model performance was evaluated on three datasets: second and third molars combined (ST), second molars only (S), and third molars only (T). Gradient-weighted Class Activation Mapping (Grad-CAM) was employed to visualize model attention. Results: A total of 1805 images were analyzed. Inception achieved the best performance in both the ST dataset (accuracy 0.96, precision 0.86, recall 0.85, and F1 score 0.85) and the S dataset (accuracy 0.98, precision 0.92, recall 0.91, and F1 score 0.89). For the T dataset, ResNet performed the best (accuracy 0.96, precision 0.94, recall 0.95, and F1 score 0.81). Inter-examiner agreement was high, with a mean kappa coefficient of 0.94. Grad-CAM heat maps confirmed that the model focused on relevant dental structures. Conclusions: The proposed deep learning system, especially the Inception model, demonstrated high accuracy and strong agreement with experts when classifying dental maturation stages. These findings support its use as a complementary diagnostic tool to aid clinical decision-making in growth assessment.Item Cephalometric Characteristics in Chilean Latino Population with Normal Occlusion and Harmonic Profiles in Permanent Dentition.: A Retrospective StudyWang, Lourdes; Quiroz, Cristina; Velasco, Andrés; Morales, Rolando; Vicuña, Daniela; Concha, Guillermo; Oyonarte, RodrigoItem Cephalometric radiographic comparison of alveolar bone height changes between adolescent and adult patients treated with premolar extractions: a retrospective studyJanson, Daniel; Caldas, Waleska; Garib, Daniela; Janson, Marcos; Niederberger, Ana; Janson, Gabriela; Valerio, Marcelo Vinicius; Oyonarte, Rodrigo; Janson, GuilhermeItem CHARACTERISTICS OF THE BUCCAL SHELF FOR THE INSTALLATION OF MINISCREWS IN CHILEAN INDIVIDUALS AGED 15-45 YEARS: A DESCRIPTIVE STUDYWang, Lourdes; Oyonarte, Rodrigo; Carmona, Raimundo; Bidart, Carolina; Battaglia, GianfrancoItem Comparative in vitro analysis of the adhesive resistance to the shear bond strength of metal brackets adhered to dental surfaces treated with different bleaching agentsRojas Orellana, Victor Hugo; Gómez, Manuel Ignacio; Sobral Sampaio, Camila; Sáez, Mackarena; Oyonarte, RodrigoItem Comparison of the primary stability of orthodontic miniscrews after repeated insertion cycles: An in vitro studyNenen, Felipe; Garnica, Nicolás; Rojas, Víctor; Oyonarte, RodrigoItem Comparison of the shear bond strength of new and recycled metallic brackets using different adhesive materials: An in vitro studyNicole Ibarra, R.; Sáez, Mackarena; Rojas, Victor; Oyonarte, RodrigoItem Diagnostic assessment of skeletal maturity through dental maturation in Hispanic growing individualsCisternas, Alejandra; Morales, Rolando; Ramirez, Valeria; Real, Alberto Del; Oyonarte, RodrigoItem Diagnostic assessment of tooth maturation of the mandibular second molars as a skeletal maturation indicator: A retrospective longitudinal studyOyonarte, Rodrigo; Sánchez-Ugarte, Fernando; Montt, Juan; Cisternas, Alejandra; Morales-Huber, Rolando; Ramirez-Lobos, Valeria; Janson, GuilhermeItem Evaluation of Mesenchymal Stem Cell Proliferation Using Different Low Intensity Pulsed Ultrasound IntensitiesBecerra Giaverini, Daniela; Jaime Díaz, Z.; Carrión A, Flavio; silva, c; Oyonarte, RodrigoItem Evolution of ANB and SN-GoGn angles during craniofacial growth: A retrospective longitudinal studyOyonarte, Rodrigo; Hurtado, Mónica; Valeria Castro, M.Item Low-intensity pulsed ultrasound stimulation of condylar growth in ratsOyonarte, Rodrigo; Zarate, Mariana; Rodriguez, FranciscoItem Midpalatal Sutural Maturation in Chilean Adolescents and Young Adults: Cross-sectional StudyVillarroel, Tannia; Alvarado, María José; Concha, Guillermo Andrés; Vicuña Iturriaga, Daniela Paz; Oyonarte, RodrigoItem Morphological effects of mesenchymal stem cells and pulsed ultrasound on condylar growth in rats: a pilot study.Oyonarte, Rodrigo; Becerra, Daniela; Díaz-Zúñiga, Jaime; Rojas, Victor; Carrion, FlavioItem Morphological effects of mesenchymal stem cells and pulsed ultrasound on condylar growth in rats: a pilot study.Oyonarte, Rodrigo; Becerra, Daniela; Díaz-Zúñiga, Jaime; Rojas, Victor; Carrion, FlavioItem Obstructive Sleep Apnea and the Role of the Orthodontist: Bibliographical reviewAlvarado, María José; Oyonarte, RodrigoItem Orthodontic movement after regenerative endodontic procedure in mature permanent tooth associated with dens invaginatus: a case report with 4-year follow-upMartínez, Isabella; Oyonarte, Rodrigo; Concha, Guillermo; Brizuela, ClaudiaItem Stability of first and second premolars extraction space closureJanson, Guilherme; Rizzo, Mayara; Valerio, Marcelo Vinicius; Oyonarte, Rodrigo; Garib, DanielaItem Threaded versus porous-surfaced implants as anchorage units for orthodontic treatment: Three-dimensional finite element analysis of peri-implant bone tissue stressesPilliar, Robert M.; Sagals, Genadijs; Meguid, Shaker A.; Oyonarte, Rodrigo; Deporter, Douglas A.Item Use of automated artificial intelligence to predict the need for orthodontic extractionsDel Real, Alberto; Del Real, Octavio; Sardina, Sebastian; Oyonarte, Rodrigo