Maria Florinda Otero González1, Thomas Klit Pedersen2, Michel Dalstra3, Troels Herlin4, Carlalberta Verna5. 1. a PhD student, Centro Singular de Investigación en Tecnoloxías da Información (CITIUS), Universidad de Santiago de Compostela, Santiago de Compostela, Spain. 2. b Professor, Section of Orthodontics, Institute of Odontology, Aarhus University and Department of Maxillofacial Surgery, Aarhus University Hospital, Aarhus, Denmark. 3. c Associate Professor, Section of Orthodontics, Institute of Odontology, Aarhus University, Aarhus, Denmark. 4. d Professor, Department of Pediatrics, Aarhus University Hospital, Aarhus, Denmark. 5. e Professor and Head, Department of Orthodontics and Pediatric Dentistry, University of Basel, Basel, Switzerland, and Visiting Professor, Section of Orthodontics, Institute of Odontology, Aarhus University, Aarhus, Denmark.
Abstract
OBJECTIVE: To evaluate three-dimensional (3D) condylar and mandibular growth in patients with juvenile idiopathic arthritis (JIA) with unilateral temporomandibular joint involvement treated with a distraction splint. MATERIALS AND METHODS: Cone-beam computed tomography (CBCT) scans were taken for 16 patients with JIA with unilateral TMJ involvement before treatment (T0) and 2 years after treatment (T1). All patients received orthopedic treatment with a distraction splint. Eleven patients without JIA who were undergoing orthodontic treatment without a functional appliance or Class II mechanics and who had taken CBCT scans before and after treatment, served as controls. Reconstructed 3D models of the mandibles at T0 and T1 were superimposed on stable structures. Intra- and intergroup growth differences in condylar and mandibular ramus modifications and growth vector direction of the mandibular ramus were evaluated. RESULTS: In all patients with JIA there were asymmetric condylar volume, distal and vertical condylar displacement, and ramus length differences that were smaller on the affected side. Condylar displacement was more distal and less vertical in the JIA group than in the control group. A larger distal growth of the condylar head and a more medial rotation of the ramus on the affected side were found in the JIA group. CONCLUSION: The orthopedic functional treatment for patients with JIA allows for condylar adaptation and modeling, thereby hindering, although with a widely variable response, a further worsening of the asymmetry. Unilateral affection has a possible influence on the growth of the nonaffected side.
OBJECTIVE: To evaluate three-dimensional (3D) condylar and mandibular growth in patients with juvenile idiopathic arthritis (JIA) with unilateral temporomandibular joint involvement treated with a distraction splint. MATERIALS AND METHODS: Cone-beam computed tomography (CBCT) scans were taken for 16 patients with JIA with unilateral TMJ involvement before treatment (T0) and 2 years after treatment (T1). All patients received orthopedic treatment with a distraction splint. Eleven patients without JIA who were undergoing orthodontic treatment without a functional appliance or Class II mechanics and who had taken CBCT scans before and after treatment, served as controls. Reconstructed 3D models of the mandibles at T0 and T1 were superimposed on stable structures. Intra- and intergroup growth differences in condylar and mandibular ramus modifications and growth vector direction of the mandibular ramus were evaluated. RESULTS: In all patients with JIA there were asymmetric condylar volume, distal and vertical condylar displacement, and ramus length differences that were smaller on the affected side. Condylar displacement was more distal and less vertical in the JIA group than in the control group. A larger distal growth of the condylar head and a more medial rotation of the ramus on the affected side were found in the JIA group. CONCLUSION: The orthopedic functional treatment for patients with JIA allows for condylar adaptation and modeling, thereby hindering, although with a widely variable response, a further worsening of the asymmetry. Unilateral affection has a possible influence on the growth of the nonaffected side.
Authors: Elka Miller; Emilio J Inarejos Clemente; Nikolay Tzaribachev; Saurabh Guleria; Mirkamal Tolend; Arthur B Meyers; Thekla von Kalle; Jennifer Stimec; Bernd Koos; Simone Appenzeller; Linda Z Arvidsson; Eva Kirkhus; Andrea S Doria; Christian J Kellenberger; Tore A Larheim Journal: Pediatr Radiol Date: 2018-05-08
Authors: Peter Stoustrup; Christian Kerting Iversen; Kasper Dahl Kristensen; Cory M Resnick; Carlalberta Verna; Sven Erik Nørholt; Shelly Abramowicz; Annelise Küseler; Paolo Maria Cattaneo; Troels Herlin; Thomas Klit Pedersen Journal: PLoS One Date: 2018-03-13 Impact factor: 3.240
Authors: Luz Victoria Mendoza; Carlos Bellot-Arcís; José María Montiel-Company; Verónica García-Sanz; José Manuel Almerich-Silla; Vanessa Paredes-Gallardo Journal: Sci Rep Date: 2018-08-17 Impact factor: 4.379