Yazar "Toygar-Memikoglu, Ufuk" seçeneğine göre listele

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    Evaluation of long-term soft tissue changes after bimaxillary orthognathic surgery in Class III patients
    (E H Angle Education Research Foundation, Inc, 2015) Aydemir, Halise; Efendiyeva, Ruchengiz; Karasu, Hakan; Toygar-Memikoglu, Ufuk
    Objective: To assess soft tissues in the short and long term after bimaxillary surgery in Class III patients by comparing the hard tissue changes and results between time periods. Materials and Methods: Twenty-six Class Ill adult patients treated with bimaxillary surgery were included in the study. Cephalometric records were taken before surgery (T1) and 5 months (T2), 1.4 years (T3), 3 years (T4), and 5 years (T5) after surgery. Results: There was no significant relapse in skeletal parameters. Overjet was significantly reduced between T4-T3 time intervals (P < .01). There were significant increases in Sn-HR, ULA-HR, LLA-HR, B-B<^> (P < .01), and B<^>-HR (P < .05) between T4-T3 time intervals. There was no significant change in the soft tissue parameters between T5-T4 time intervals. Conclusion: Soft tissue vertical relapse occurs in skeletally stabile Class Ill bimaxillary surgery patients in the first 3 years after surgery.
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    Pharyngeal Airway Dimensions in Cleft Lip and Palate Patients Compared With Class I Subjects
    (Aves Press Ltd, 2014) Aydemir, Halise; Toygar-Memikoglu, Ufuk
    Objective: The aim of this study was to analyze and compare the pharyngeal airway dimensions of cleft lip and palate (CLP) and skeletal Class I patients. Materials and Method: The study was carried out in 91 subjects asking for orthodontic treatment in Ankara University, Turkey. The patients were selected from the archives of the Orthodontics Department. Forty-eight of the patients had CLP and 43 were skeletal Class I patients. Both control and CLP groups were divided into 3 subgroups according to the ages 7-11, 11-14, and 15 years and older. The number of subjects was matched in the same age groups. The pretreatment lateral cephalometric head films of the subjects were used in the study. Airway dimensions were evaluated with area measurements using planimeter. The airway was divided into 3 parts, and measurements were done on those areas. SNA, SNB, ANB, and GoGnSN angles were measured in all cephalograms by the same examiner. The values were compared within the same age group in both the CLP and control groups. Results: For statistical analysis, variance analysis was used. For control and cleft groups, there were no statistically significant differences in pharyngeal airway and skeletal measurements. Conclusion: Our findings indicate that CLP patients have similar airway area measurements with normal Class I subjects, which might be attributed to adaptation in the pharyngeal area of CLP patients.
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    Pharyngeal airway space, hyoid bone position, and head posture after bimaxillary orthognathic surgery in Class III patients Long-term evaluation
    (E H Angle Education Research Foundation, Inc, 2014) Efendiyeva, Ruchengiz; Aydemir, Halise; Karasu, Hakan; Toygar-Memikoglu, Ufuk
    Objective: (1) To determine the effect of bimaxillary orthognathic surgery on pharyngeal airway, hyoid bone, and craniocervical posture in Class III bimaxillary surgery patients. (2) To evaluate short-term and long-term results. (3) To compare short- and long-term values. Materials and Methods: Twenty-six Class III adult patients treated with bimaxillary surgery were included in the study. Cephalometric records were taken before treatment (T1), before surgery (T2), and 5 months (T3), 1.4 years (T4), 3 years (T5), and 5 years (T6) postsurgery. Results: No significant differences were identified in craniocervical angulation between time intervals. There was a significant superior movement of hyoid bone at postsurgery (T3; P < .05); however, adaptation occurred to the normal position in the long term. A nonsignificant decrease occurred at the oropharyngeal middle pharyngeal distance parameter; however, this was compensated with a significant increase between T5 and T6 (P < .001). A significant decrease was observed in the hypopharyngeal Go-P parameter between T3 and T1 (P < .01), but it recovered with a nonsignificant increase in the long term. A significant increase in nasopharyngeal area was observed between T3 and T1 (P < .05). The hypopharyngeal area significantly increased between T5 and T6, and PNS-R significantly increased between T3 and Ti (P < .05). Conclusion: The pharyngeal areas adversely affected after surgery recover at long-term follow-up; thus, adaptation occurs after bimaxillary surgery.
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    The Effects of Tooth Extraction and Nonextraction on the Soft Tissue Profile in Patients With Class II Division 2 Malocclusion
    (Aves Press Ltd, 2014) Aydemir, Halise; Nebioglu-Dalci, Oyku; Altug, Ayse Tuba; Toygar-Memikoglu, Ufuk
    Objective: To determine and compare change in the position and area of the upper and lower lips in patients with Class II division 2 malocclusion treated with and without tooth extraction. Materials and Method: This retrospective study included 40 female adolescent patients with Class II division 2 malocclusion who were divided into an extraction treatment group (group E, n=20) and a nonextraction treatment group (group NE, n=20). Pretreatment (T1) and posttreatment (T2) cephalometric variables, and upper-lower lip area (via digital planimeter) were measured on lateral cephalometric radiographs. For soft tissue profile area measurement the upper lip was divided into 2 parts (area 1 and 2), and the lower lip was divided into 3 parts (area 3, 4, and 5). The paired t test was used to determine intragroup differences, and the Student t test was used to determine intergroup differences. Results: Mean age in group E was 15.8 years vs 15.4 years in group NE. A wide range of individual responses to the treatment protocols were observed, and none of the skeletal or soft tissue changes differed significantly between the groups. Conclusion: Despite great variability in posttreatment soft tissue changes-including area measurements-the mean values for all measurements were similar in group E and group NE. Nonetheless, due to the observed variation in soft tissue response, we think that treatment planning should be carefully tailored to the needs of each patient.
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    Three-dimensional craniofacial morphology in unilateral cleft lip and palate
    (Nihon Univ, School Dentistry, 2014) Abuhijleh, Eyas; Aydemir, Halise; Toygar-Memikoglu, Ufuk
    Craniofacial morphology and asymmetry were compared before, during, and after puberty within and between patients with unilateral complete cleft lip and palate (UCCLP) and a non-cleft group. In the UCCLP group, the posterior cranial base and total cranial base were significantly shorter at all skeletal periods, the maxilla was significantly retruded and posteriorly rotated, and the mandible was significantly smaller and inferoposteriorly rotated. The angle between the nasal and mandibular plane and lower anterior facial height were significantly higher, and upper posterior facial height and total posterior height were significantly lower, in the UCCLP group. Except for an increase in the nasal cavity, no significant differences were detected in facial width. For all measurements, asymmetry on the horizontal plane was more significant than that on the vertical plane. Asymmetries in the UCCLP group were mostly detected during puberty. The UCCLP group had no distinctive mandibular asymmetry, as compared with the Class I group. In UCCLP patients, the cranial base, maxilla, and mandible were affected on the sagittal plane during all growth periods. However, horizontal asymmetries were mostly detected before and during puberty. Vertical asymmetries were less severe, and there was no distinctive mandibular asymmetry as compared with the Class I group.
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    Turkish Norms of McNamara's Cephalometric Analysis
    (Aves Press Ltd, 2014) Aydemir, Halise; Novruzov, Zaur; Toygar-Memikoglu, Ufuk
    Objective: (1) To establish cephalometric standards for the Turkish adult population, (2) to compare Turkish norms with the published standards of McNamara norms, and (3) to compare the assessment of craniofacial structure by extracranial and intracranial reference lines. Materials and Method: The main study sample consisted of 44 female and 29 male dental students aged between 19 and 29 years. All of the head films were taken in the natural head position, which was determined with 0.5-mm wire that was attached to a fluid level device to represent the true horizontal and a metal chain that was suspended in front of the cassette to check the true horizontal. Results: For men, N perp A and Pg N perp were significantly greater (p < 0.001) in the Turkish population, whereas SNA (p < 0.001), CoGn (p < 0.001), CoA (p < 0.001), upper incisal A vertical (p < 0.05), and lower incisor A pg (p < 0.05) were significantly smaller. In women, N perp A and Pg N perp were significantly greater (p < 0.001) in the Turkish population, whereas SNA (p < 0.01), CoGn (p < 0.001), and CoA (p < 0.01) were significantly smaller. For both men and women, only the variables FH/GoMe and X1-X2/GoMe were compatible with each other (p < 0.001). Conclusion: The Anotolian Turkish sample has shorter midfacial (Co-A) and mandibular (Co-Gn) lengths and a more protrusive maxilla (N perp A) and mandible (Pg N perp). Extracranial reference lines are more reliable than intracranial reference lines because of interindividual variability.