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Öğe Effect of Rapid Maxillary Expansion Treatment on the Nasal Floor and Nasal Soft Tissue: Report on 26 Patients(AVES, BUYUKDERE CAD 105-9, MECIDIYEKOY, SISLI, ISTANBUL 34394, TURKEY, 2022) Ok, Ufuk; Koru, Burcu EceObjective: Rapid maxillary expansion may result in transverse and sagittal alterations of the maxilla and base of the nose. rapid maxillary expansion-induced changes in soft and skeletal tissues could influence midfacial aesthetics. In this study, we aimed to determine the shortterm effects of rapid maxillary expansion on the midface soft and skeletal tissue structures by reviewing cone-beam computed tomography imaging retrospectively. Methods: The study included 26 patients who underwent rapid maxillary expansion, of whom 13 were women and 13 were men (mean age 11.29 years; standard deviation 1.56, range 9.5-14.4 years). All selected patients underwent multi-slice cone-beam computed tomography twice; pre-rapid maxillary expansion (T0) and post-rapid maxillary expansion (T1). To compare the T0 and T1 results, 7 skeletal tissues, 4 soft tissues, and 3 angle variables were evaluated. Results: A statistically significant elevation of all variables related to soft (alar base and alar curvature) and skeletal tissues (N-ANS; P < 0.05) was found. Comparisons between T0 and T1 revealed significant changes in the pyriform aperture width (anterior nasal width, posterior nasal width, and anterior nasal floor width; P < .001). When the beta coefficient was considered in simple regression analysis, the difference in the value of anterior nasal floor revealed a positive effect that was 3.91 times that of the change in the al-al alar base width. Conclusion: Rapid maxillary expansion caused significant positional changes in the soft tissues around the nose of young and growing patients. The maxillary transverse width variable, T1-T0 difference, was found to impact the alar base width owing to the effects on the anterior nasal floor. Therefore, the anticipated changes should be explained to patients with pre-rapid maxillary expansion.Öğe Fractal Perspective on the Rapid Maxillary Expansion Treatment; Evaluation of the Relationship Between Midpalatal Suture Opening and Dental Effects(ELSEVIER, RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS, 2022) Ok, Ufuk; Ünal Kaya, TuğçeObjective: This retrospective study investigates the relationship between the midpalatal suture opening and the dental effects of Rapid Maxillary Expansion (RME) treatment using fractal analysis. Methods: The participants of this study were selected from the patients who underwent Cone Beam Computed Tomography(CBCT) scans in 2019 and were treated with banded type Maxillary Expander. This study included 20 participants (with a mean age of 10.64§10.64, ranging from 8 to 13 years): 12 males and 8 females. Patients went through CBCT scan and images taken were analyzed using the ImageJ program. The following parameters were measured and analyzed before and after RME treatment: fractal dimensional value of Midpalatal suture(MPS), Distobuccal(DB), Mesiobuccal(MB), Palatal(P), Total distance, Cortical bone and linear values of External maxilla, Internal maxilla, Palatal roots, distance of Central fosses and angular values of Tipping value of 16 and 26. We used Spearman’s nonparametric test for non-normal variables to investigate the correlation between changes in MPS and other variables. Results: The results showed a strong positive correlation between the MPS and Right MB (0.34, p<0.05) and Left MB (0.59, p<0.05) variables and a strong negative correlation between the MPS and the External maxillary variables (-0.53, p<0.05). Conclusion: The results of the study have shown a strong correlation between right and left MB and External Maxilla. RME caused a reduction in buccal alveolar bone thickness and a slight reduction in MPS thickness in growing patients. Therefore, we suggest that fractal analysis can be used to evaluate the skeletal and dental effects of RME in patients.Öğe Intrusion and Maintenance of Maxillary Incisors by Unilateral Orthodontic Anchorage Obtained Through Dental Implants Placed in Grafted Sinus: 16-Year Follow-Up of a Case(Türkiye Klinikleri Yayınevi, 2022) Tosun, Tosun; Keleş, Ahmet Özlem; Ok, UfukThis case report shows stationary orthodontic load bearing capacity of dental implants placed in grafted maxillary sinus. The treatment plan aimed to restore missing teeth by a fixed partial implantretained prosthesis and to treat orthodontic alignment by the aid of the same prosthesis. A 39-years old male patient with unilaterally missing teeth in the maxilla and remaining crowded teeth exhibited poor oral hygiene. The treatment planning involved replacement of missing teeth by dental implants following sinus grafting and subsequent orthodontic correction by means of a newly designed implant retained prosthesis with reciprocal arms which give maximal anchorage to intrude maxillary incisors. Implants were used for dual purpose: Replacement of missing teeth and fixed anchorage for orthodontics. Implants placed in a grafted maxillary sinus which were used as orthodontic anchorage units, they maintained osseointegration during orthodontic treatment under stationary forces. Dental implants in grafted maxillary sinus are able to bear stationary orthodontic forces.Öğe Is there a relationship of nasal septum deviation with pharyngeal airway dimension and craniocervical posture?(TAYLOR & FRANCIS LTD, 2-4 PARK SQUARE, MILTON PARK, ABINGDON OR14 4RN, OXON, ENGLAND, 2021) Sadry, Sanaz; Ok, Ufuk; Öner Özdaş, DidemObjective: This study aimed to evaluate the effects of nasal septum deviation on the pharyngeal airway and craniocervical posture measurements using cone beam computed tomography (CBCT). Methods: This retrospective study analyzed the CBCTs of 25 patients with and without nasal septum deviation. Various parameters defining the pharyngeal airway and craniocervical and facial skeletal morphology were measured and compared between the groups after confirming intraexaminer reliability. Results: Compared to the control group, the group with nasal septum deviation had a statistically significantly shorter nasopharyngeal length (p < 0.001), longer vertical airway length (p < 0.002), and larger cervical column curvature angle (p < 0.006). Conclusion: Children with a nasal septum deviation of 4 mm or more on their CBCT scan are susceptible to unfavorable pharyngeal airway and craniocervical postural changes.Öğe Ortodontide kullanılan şeffaf plakların su emilimlerinin ve renklenmelerinin değerlendirmesi(İstanbul Gelişim Üniversitesi Yayınları / Istanbul Gelisim University Press, 2021) Ergel, Duygu; Sadry, Sanaz; Ok, UfukŞeffaf plak kullanan hastalarda termoplastik malzemede oluşabilecek renk değişikliklerini önlemek amacıyla, hastalara su hariç her yiyecek ve içecek tüketimleri sırasında plaklarını çıkarmaları önerilmektedir. Ancak yine de günlük hayatta bazı hastalar, özellikle içecek tüketimi sırasında plaklarını çıkarmadan günlük rutinlerine devam etmektedir. Bu durumda termoplastik olan şeffaf plakların fiziksel özelliklerini etkilemektedir. Termoplastik malzemelerinin fiziksel özellikleriyle ilgili çok az çalışma vardır. Hastaların bilgilendirmesi açısından literatürde yeterli sayıda yol gösterici kanıtlar bulunmamaktadır. Bu çalışmada amaç, şeffaf plakların boyar ajanlara maruz bırakıldıktan sonra oluşan renk değişikliklerinin karşılaştırmalı olarak incelenmesidir.Öğe Three-dimensional zygomatic changes after rapid maxillary expansion in growing patients(Urban & Vogel, 2023) Ok, Ufuk; Kayalar, Emre; Sadry, SanazPurpose To assess the effects of rapid maxillary expansion (RME) treatment on the zygomatic bone complex (ZBC). Methods In this single-center retrospective study, pre- and posttreatment cone-beam computed tomography (CBCT) images of 38 patients treated with RME were analyzed to investigate changes in the coordinates of the ZBC landmarks. At the start of treatment (T0), the patients' mean age was 11.1 +/- 3.8 years (range 8.3-14.9 years). Cohen's d test was used to evaluate statistical differences. Results There were statistically significant differences between T0 and T1 (P < 0.01) in the measurement values for the maxillary transverse width (Delta T: 3.18 +/- 2.58, d: 1.23), frontozygomatic sutures (Delta T: 1.09 +/- 0.56, d: 0.43), lowest point of the zygomaticomaxillary sutures (Delta T: 3.16 +/- 1.78, d: 0.78), frontomaxillary angular parameter (right side Delta T: 2.81 +/- 1.63, d: 1.73; left side Delta T: 2.52 +/- 1.20, d: 2.10), frontozygomatic angular parameter (right side Delta T: 2.81 +/- 1.63 d: 1.07; left side Delta T: 2.21 +/- 2.79, d: 0.61), anterior intermaxillary distance (Delta T: 2.11 +/- 1.42, d: 0.99), interzygomaticotemporal distance (Delta T: 2.00 +/- 2.42, d: 0.99), and zygomatic angular parameter (right side Delta T: 2.06 +/- 1.29, d: 1.6; left side Delta T: 2.02 +/- 1.86, d: 1.09). Conclusions After RME in growing patients, the zygomatic bone showed pyramidal expansion in the coronal plane and parallel palatal expansion in the axial plane. In addition, significant lateral relocation of the zygomatic bone occurred. The zygomatic bone tended to rotate outward in conjunction with the maxilla, with a typical center of rotation close to the superior side of the frontozygomatic suture. These results shed light on the patterns of skeletal expansion in the zygomatic bone associated with RME in growing patients.
