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Öğe Mandibular asymmetry in class II subdivision malocclusion(2008) Kurt G.; Uysal T.; Sisman Y.; Ramoglu S.I.Objective: To evaluate the condylar and ramal mandibular asymmetry in a group of patients with Class II subdivision malocclusion to identify possible gender differences between male and female subjects. Materials and Methods: Mandibular asymmetry measurements (condylar, ramal, and condylar-plus-ramal asymmetry values) were performed on the panoramic radiographs of 80 subjects (34 male and 46 female). The study group consisted of 40 Class II subdivision patients (18 male and 22 female; mean age 14.53 ± 3.14 years). The control group consisted of 40 subjects with normal occlusion (16 male and 24 female; mean age 14.43 ± 3.05 years). The Kruskal-Wallis test was used to determine the possible statistically significant differences between the groups for condylar, ramal, and condylar-plus-ramal asymmetry index measurements. Identified differences between groups were further analyzed using the Mann-Whitney U-test at the 95% confidence interval (P ± .05). Results: No gender-related difference was found for any of the asymmetry indices. Comparison of condylar, ramal, and condylar-plus-ramal asymmetry index values and gonial angle measurements for Class I and Class II sides in the Class II subdivision group and for right and left sides in the Class I group showed no statistically significant differences. However, the Class II subdivision group has longer values for condylar, ramal, and condylar-plus-ramal height measurements and only these differences were statistically significant (P ± .001). Conclusions: Except for condylar ramal and condylar-plus-ramal height measurements, Class II subdivision patients have symmetrical condyles when compared to normal occlusion samples according to Habbet's mandibular asymmetry indices. © 2007 by The EH Angle Education and Research Foundation, Inc.Öğe Rapid maxillary expansion. Is it better in the mixed or in the permanent dentition?(2003) Sari Z.; Uysal T.; Usumez S.; Basciftci F.A.The aim of this study was to compare the dentoskeletal effects of a modified acrylic-bonded rapid maxillary expansion (RME) device when it is used in the mixed and permanent dentitions. The study group consisted of 51 patients in the mixed and permanent dentition (26 girls and 25 boys) who underwent RME treatment. Group 1 was composed of 34 subjects in the mixed dentition (19 girls and 15 boys; mean age, 9.2 ± 1.3 years). Group 2 consisted of 17 subjects in the permanent dentition (seven girls and 10 boys; mean age 12.7 ± 1.2 years). Lateral and frontal cephalograms and upper dental casts were collected before treatment (T1), after treatment (T2), and after retention (T3). Intragroup and intergroup changes were evaluated by paired t-test and Student's t-test, respectively. In both groups after RME, the maxilla moved forward; mandible rotated posteriorly; facial height increased; nasal, maxillary, and maxillary intercanine and first molar widths increased; and the upper molars tipped buccally. Almost all these significant changes were stable at follow-up (T3). When overall (T1-T3) differences were considered, upper molars tipped more, and the ANB angle increased less in the mixed dentition group compared with the permanent dentition group (P < .01). Within the limits of this study, the results suggest that the orthopedic effects of RME are not as great as expected at early ages, and it might be a better alternative to delay RME to early permanent dentition.Öğe Silene kucukodukii sp. nov. (Caryophyllaceae) from south Anatolia, Turkey(2007) Ba?ci Y.; Uysal T.; Ertu?rul K.; Demirelma H.Silene kucukodukii Y. Ba?ci & Uysal sp. nov. from the Hadim, (C4 Konya-Turkey) is described and illustrated. It is closely related to S. sipylea O. Schwarz from which it differs morphologically mainly by the indumentum, leaf and floral features. Diagnostic morphological characters are discussed and a key of related Silene L. species in Turkey is given. The geographical distribution of the new species and other related species is mapped. Notes are also presented on its ecology, biogeography and conservation status. A chromosome count on Silene kucukodukii has been carried out and the chromosome number is 2n=24. © 2007 The Authors.Öğe Third-molar development in relation to chronologic age in Turkish children and young adults(2007) Sisman Y.; Uysal T.; Yagmur F.; Ramoglu S.I.Objective: To assess estimation of chronologic age based on the stages of third-molar development following the eight stages (A-H) method of Demirjian et al and to compare third-molar development by sex and age with results of previous studies. Materials and Methods: The final sample consisted of 900 orthopantomograms from young Turkish subjects of known chronologic age (range, 8-25 years; mean age, 15.18 ± 4.81 years) and sex (380 males with a mean age of 14.51 ± 4.55; 520 females with a mean age of 15.67 ± 4.94). Statistical analysis was performed using the Mann-Whitney U-test and the Wilcoxon test between sex and age. Regression analysis was performed to obtain regression formulas for dental age calculation with the chronologic age Results: Statistically significant differences (P < .05) in third-molar development between males and females were revealed regarding the calcification stages D and G. Third-molar genesis was attained earlier in males than in females. Statistical analysis showed a strong correlation between age and third-molar development for males (r2 = .65) and for females (r2 = .61). New equations (Age = 8.92 + 1.50 Development stage) were derived for estimating chronologic age. Conclusion: The use of third molars as a developmental marker is appropriate, especially when comparing the obtained standard deviation with other skeletal age calculation techniques. © 2007 by The EH Angle Education and Research Foundation, Inc.
