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    Arch Dimension Changes Associated with the Treatment of Class III Cases
    (Aves Press Ltd, 2007) Gunduz-Arslan, Seher; Deveciolu-Kama, Jalen; Ozer, Torun; Dari, Osman
    The aim of this study was to investigate the dentoalveolar changes associated with the treatment class III anomalies characterized with maxillary narrowness and retrusion. Orthodontic study models of 20 patients before and after treatment were used. Distance and area measurements of these models are considered. The study models of 20 patients that were not treated served as a control group. Fourteen parameters were investigated on study models. Paired t test was used in group comparisons and independent student t test was used in between group comparisons. Palatal shelf area measurement in the premolar region was increased in both groups but the increases of the treatment group were larger (P<0.001-P<0.05). The changes in the other parameters were different from each other. Upper and lower arch perimeters (P<0.05), lower canine to canine distances (P<0.01), upper (P<0.001) and lower (P<0.05) premolar to premolar distances, palatal shelf area measurements in the molar region (P<0.001) increased significantly but premolar angulations (P<0.05) decreased significantly. Dentoalveolar changes were occurred as a result of modifications in the direction of growth.
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    Effects on the sagittal pharyngeal dimensions of protraction and rapid palatal expansion in Class III malocclusion subjects
    (Oxford Univ Press, 2008) Kilinc, Ali Serdar; Arslan, Seher Gunduz; Kama, Jalen Devecioglu; Ozer, Torun; Dari, Osman
    This study examined the effects of rapid palatal expansion (RPE) and maxillary protraction headgear therapy in 18 patients with a skeletal Class III malocclusion (11 girls and seven boys; mean age 10.9 years) on upper airway dimensions compared with an untreated control group (nine girls and eight boys; mean age 10.9 years). Pre- and post-treatment cephalometric radiographs were traced and analysed at similar time intervals. The average treatment time was 6.94 +/- 0.56 months. Wilcoxon's test was used for intragroup comparisons and the Mann-Whitney U-test for intergroup comparisons. A significant increase occurred in the maxillary forward position. Mandibular forward movement and downward and backward rotation were inhibited. In addition, the upper incisors were proclined (P < 0.001), and the lower incisors were significantly retroclined (P < 0.05). When the treatment and control groups were compared, the upper airway linear measurements (pns-ad(1), pns-ad(2), APW-PPW, APW'-PPW') and the nasopharyngeal area had increased in the treatment group. These results demonstrated that maxillary expansion together with protraction of the maxilla improved naso- and oropharyngeal airway dimensions in the short term.
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    Öğe
    Soft Tissue Profile Changes Associated with the Treatment of Class III Anomalies with Maxillary Constriction and Retrusion
    (Aves Press Ltd, 2007) Gunduz-Arslan, Seher; Devecioglu-Kama, Jalen; Genc, Celal; Dari, Osman
    The aim of this study was to evaluate soft tissue profile changes of Class III patients with maxillary constriction and retrusion with area measurement method, following rapid maxillary expansion (RME) + Petit type face mask and fixed orthodontic appliance treatment. Cephalometric radiographs taken from 37 treated and 21 untreated Class III patients were used for this study. These radiographs were taken before and after treatment in test and control groups. Soft tissues were traced on these cephalometric radiographs. Nose, upper and lower lips, chin and free space areas were measured between the E-line and Juanita line. T-tests used to assess these parameters statistically. Significant changes in nose, upper lip, chin and free space areas were observed in the treatment group. The only mean increase occurred in chin area in control group. Increases of nose and upper lip areas were significantly different between treatment and control groups (P<0.001). Present study shows that the treatment with, RME + petit face mask and fixed appliances have an important role in profile improvement.