scholarly journals Three dimensional evaluation of pharyngeal airway changes associated with maxillary incisors proclination in class II division 2 using cone-beam computed tomography

2014 ◽  
Vol 45 (6) ◽  
pp. 1-18
Author(s):  
Eiman Marzouk ◽  
Ahmed EL Kalza
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Three Dimensional ◽  
Class Ii ◽  
Cone Beam ◽  
Pharyngeal Airway ◽  
Maxillary Incisors ◽  
Division 2

scholarly journals Three-dimensional cone-beam computed tomography comparison of shorty and standard Class II Carriere Motion appliance

2021 ◽  
Author(s):  
Brian Wilson ◽  
Nikoleta Konstantoni ◽  
Ki Beom Kim ◽  
Patrick Foley ◽  
Hiroshi Ueno
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Treatment Effects ◽  
Three Dimensional ◽  
Class Ii ◽  
Cone Beam ◽  
Class Ii Malocclusion ◽  
Dimensional Cone ◽  
Group 2 ◽  
Group 1

ABSTRACT Objectives To compare treatment effects of the standard and shorty Class II Carriere Motion appliances (CMAs) on adolescent patients. Materials and Methods Fifty adolescents with Class II malocclusion formed group 1, who were treated with shorty CMA (n = 25, 12.66 ± 1.05 years), and age- and sex–matched group 2, who were treated with standard CMA (n = 25, 12.73 ± 1.07 years). Treatment effects were analyzed by tracing with Invivo software to compare pretreatment (T1) cone-beam computed tomography (CBCT) images with post-CMA (T2) CBCT images. A total of 23 measurements were compared within and between groups. Results In groups 1 and 2, maxillary first molars showed significant distal movement from T1 to T2 (1.83 ± 2.11 mm and 2.14 ± 1.34 mm, respectively), with distal tipping and rotation in group 1 (6.52° ± 3.99° and 3.15° ± 7.52°, respectively) but only distal tipping (7.03° ± 3.45°) in group 2. Similarly, in both groups, the maxillary first premolars experienced significant distal movement with distal tipping but no significant rotation. In group 1, maxillary canines did not undergo significant distal movement. In both groups 1 and 2, mandibular first molars experienced significant mesial movement (1.85 ± 1.88 mm and 2.44 ± 2.02 mm, respectively). Group 1 showed statistically significantly less reduction in overjet and less canine distal movement with less distal tipping than group 2 (α < .05). Conclusions The shorty CMA achieved Class II correction similarly to the standard CMA, with less change in overjet and distal tipping movement of the maxillary canines.

scholarly journals Evaluation of the Pharyngeal Airway Space Before and after Bi-Lateral Sagittal Split Osteotomy Surgery using Three-Dimensional Cone Beam Computed Tomography

2020 ◽  
pp. 29-37
Author(s):  
Sameer Khan ◽  
Devaki Vijayalakshmi ◽  
K.S. Nagachandran ◽  
S. Karthik ◽  
Janani Jayapal ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Three Dimensional ◽  
Cone Beam ◽  
Skeletal Class ◽  
Pharyngeal Airway ◽  
Sagittal Split Osteotomy ◽  
Skeletal Class Ii ◽  
Dimensional Cone ◽  
Before And After

Objectives: To evaluate the changes in the pharyngeal airway space (PAS) before and after bi-lateral sagittal split osteotomy (BSSO) surgery using a three-dimensional cone-beam computed tomography (3D-CBCT). Material and Methods: The sample consisted of patients (n=7), aged between 21-30 years, having a skeletal Class II with retrognathic mandible and orthognathic maxilla who underwent orthodontic treatment and were advised for BSSO advancement surgery. Pre-surgical CBCT scans were taken a week before the surgery (T0) and the post-treatment records, three months after the surgery (T1). The 3D PAS was reconstructed from the CBCT scans, and the volumetric changes were evaluated.

Three-dimensional changes of the upper airway in patients with Class II malocclusion treated with the Herbst appliance: A cone-beam computed tomography study

2020 ◽  
Vol 157 (2) ◽  
pp. 205-211 ◽  
Author(s):  
Paula Moreira Oliveira ◽  
Paula Loureiro Cheib-Vilefort ◽  
Henrique de Pársia Gontijo ◽  
Camilo Aquino Melgaço ◽  
Lorenzo Franchi ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Three Dimensional ◽  
Upper Airway ◽  
Class Ii ◽  
Cone Beam ◽  
Class Ii Malocclusion ◽  
Herbst Appliance ◽  
Dimensional Changes
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