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Öğe Bisphosphonates(Aves Press Ltd, 2009) Ozturk, FiratBisphosphonates are used with the purpose of preventing bone resorption in some metabolic bone diseases. These drugs have been introduced into clinical use about 30 years ago and widely used in nowadays. As Orthodontic some different researches have been made which imply that this medicine that can be used as supplementary agents to prevent the unwanted teeth movements and relapse after expansion. Within the last few years, articles have been published which mention the probable relationship between the long term usage of bisphosphonate and the formation of osteonecrosis in the jaws. The aim of this review is to inform orthodontist about uses, pharmacokinetics, mechanism of action and probable complication.Öğe Bone age assessment: comparison of children from two different regions with the Greulich-Pyle method In Turkey(TAYLOR & FRANCIS LTD, 2016) Ozturk, Firat; Karatas, Orhan H.; Mutaf, Hasan I.; Babacan, HasanThe aim of this study was to identify and compare bone age assessments of Turkish children in regions of Central Anatolia and Eastern Anatolia using the Greulich-Pyle (GP) method. Evaluation was made of 849 (375 boys, 514 girls) adolescents aged between 9 and 17years, who lived in two geographically different regions of Turkey. The selection criteria included normal growth and development, a state of good physical and mental health with no previous history of chronic or acute illnesses, no past trauma or injury to the hand-wrist region, no congenital or acquired malformations of the hand-wrist area, no hormonal disorders, and good quality hand-wrist radiographs. Bone age (BA) was evaluated using the GP method from definitive radiographs of the left hand-wrist. The total mean differences between BA and chronological age (CA) for girls and boys were found to be 1.19 +/- 1.2 (p<0.05) and 0.90 +/- 1.2 (p<0.05) years in the Eastern Anatolia region and 0.28 +/- 0.6 (p>0.05) and -0.10 +/- 0.3 (p>0.05) years in the Central Anatolia region. There were significant differences between BA and CA in all age groups for girls and boys in Malatya (a city in the Eastern Anatolia region) and in 10 and 13year olds for girls and 12, 13, 15, and 16year olds for boys in Sivas (a city in the Central Anatolia region). Statistically significant differences were determined between the BA and CA of the subjects living in Malatya and Sivas (p<0.05). The results of this study using the Greulich-Pyle atlas indicate that bone development is completed earlier in adolescents living in Malatya compared with those in Sivas.Öğe Does rapid maxillary expansion affect the eruption of upper third molars?(E H ANGLE EDUCATION RESEARCH FOUNDATION, INC, 2008) Sokucu, Oral; Ozturk, Firat; Babacan, Hasan; Bicakci, Ali AltugObjective: To test the hypothesis that there is no difference in the movement of the upper third molars between rapid maxillary expansion (RME) and non-RME patients. Materials and Methods: This study was performed on 30 patients divided into two groups. The study group included 20 patients who had maxillary narrowness and bilateral maxillary third molars and who had undergone RME application. The control group of 10 patients had a bilateral cross-bite, had bilateral maxillary third molars, and did not receive orthodontic treatment. The records included lateral and frontal cephalometric films and maxillary plaster models. In the study group, records were taken before expansion (T1), after expansion (T2), and at the retention period (T3). T2 records were not taken in the control group because this period was too short to observe any changes. Friedman tests were used to observe within groups, and the Mann-Whitney U-test was used to see the differences between groups on films and casts. Results: Frontal films showed that vertical eruption occurred after the retention period in the RME cases. Cephalometric films revealed that the angular eruption occurred immediately after expansion. However, the results were not significant with respect to the control group. Conclusion: The hypothesis was rejected. Rapid maxillary expansion affects maxillary third molar movement during and after the RME procedure. RME may indicate upper third molar eruption, but the final position of third molar was not different compared to the normal growth pattern.Öğe Effects of bisphosphonates on sutural bone formation and relapse: A histologic and immunohistochemical study(MOSBY-ELSEVIER, 2011) Ozturk, Firat; Babacan, Hasan; Inan, Sevinc; Gumus, CesurIntroduction: The aim of this experimental study was to evaluate the effects of systemically applied zoledronic acid on bone regeneration in response to expansion of the sagittal suture and relapse in rats. Methods: Thirty-six male Wistar rats were divided into 3 groups. In the first and second groups, saline solution was given subcutaneously after expansion, and the retention periods lasted 14 and 7 days, respectively. In the third group, 0.1 mg of zoledronic acid was diluted with saline solution and given subcutaneously after expansion; the retention period lasted for 7 days. Expansion and relapse amounts were measured by using computed tomography. After the retention period, 6 rats from each group were killed for histologic and immunohistochemical assessments. The other 6 rats from each group were used for observation of the relapse. Results: The histologic evaluation showed that, in groups 1 and 2, the numbers of osteoblasts were less than observed in group 3. When scores of staining intensity were compared, immunoreactivities were statistically significantly increased in group 3 compared with groups 2 and 1. Statistically significant differences were found when the relapse percentages were compared between the groups (P < 0.05). The smallest relapse occurred in group 3. Conclusions: Zoledronic acid has positive effects on bone formation in the sagittal suture in response to expansion and decreases the relapse ratio after expansion in rats. (Am J Orthod Dentofacial Orthop 2011; 140: e31-e41)Öğe Effects of direct and indirect bonding techniques on bond strength and microleakage after thermocycling(KOREAN ASSOC ORTHODONTISTS, 2009) Ozturk, Firat; Babacan, Hasan; Nalcaci, Ruhi; Kustarci, AlperObjective: The purpose of this study was to compare the shear bond strength (SBS) of brackets and microleakage of a tooth-adhesive-bracket complex bonded with a direct and an indirect bonding technique after thermocycling. Methods: Fifty non-carious human premolars were divided into two equal groups. In the direct bonding group a light-cured adhesive and a primer (Transbond XT) was used. In the indirect-bonding group, a light-cured adhesive (Transbond XT) and chemical-cured primer (Sondhi Rapid Set) were used. After polymerization, the teeth were kept in distilled water for 24 hours and thereafter subjected to thermal cycling (500 cycles). For the microleakage evaluation, 10 teeth from each group were further sealed with nail varnish, stained with 0.5% basic fuchsin for 24 hours, and examined under a stereomicroscope. Fifteen teeth from each group were used for SBS testing with the universal testing machine and adhesive remnant index (ARI) evaluation. Data were analyzed using the Mann-Whitney U test, Chi-square test, and Fisher's exact test. Results: There were no statistical differences on SBS and microleakage between the two bonding techniques. The indirect bonding group had a significantly lower ARI score. Bracket failures were obtained between enamel-resin interfaces. Conclusions: The type of bonding technique did not significantly affect the amount of microleakage and SBS. (Korean J Orthod 2009;39(6):393-401)Öğe Effects of Orthodontic Treatment on Patients' Dental Anxiety and Oral Health Knowledge(Aves Press Ltd, 2009) Ozturk, Firat; Sokucu, Oral; Demirer, Serhat; Nalcaci, Ruhi; Ozdemir, HakanThe aim of this study was to investigate effects of orthodontic treatment on both anxiety and oral health knowledge of orthodontic patients. The study was carried out in 184 patients. Four groups were formed according to the stage of orthodontic treatment. Group 1 consisted of 47 individuals selected from patients who were awaiting orthodontic treatment; groups 2 and 3, comprised 44 and 46 individuals who had been undergoing orthodontic treatment for a period of 1-12 and 12-26 months respectively, and group 4, 47 orthodontically treated individuals. The modified Dental Anxiety Scale was used to measure dental anxiety. Oral health knowledge was assessed using several questions concerning etiology, symptoms and prevention. Chi-squire test was used for statistical assessment. The anxiety level of patients in group 1 was significantly higher than the subjects in group 4. Patients in groups 2, 3 and 4 mostly knew that gum bleeding is a sign of periodontal disease (81.8, 84.7, 80.1 per cent respectively); and this was 63.8 per cent for group 1. Patients in all groups were aware how to prevent, however those who were undergoing or had completed treatment were more informed about symptoms of periodontal disease. Only 19.6 and 52.1 per cent of subjects in group 3 had the knowledge to identify dental plaque and what it can cause respectively; which was the highest ratio among the groups. Orthodontic treatment involves some degree of exposure, consequently creates a positive influence on patients' anxiety and periodontal health knowledge.Öğe Effects of zoledronic acid on sutural bone formation: a computed tomography study(OXFORD UNIV PRESS, 2012) Ozturk, Firat; Babacan, Hasan; Gumus, CesurThe aim of this study was to investigate the effects of systemically applied zoledronic acid (ZA) on osteoblastic bone formation and relapse in the rat sagittal suture after expansion. Eighteen 12-week-old male Wistar rats were divided into three groups. In groups 1 and 2, a saline solution was given subcutaneously after expansion and the retention period lasted for 14 and 7 days, respectively. In group 3, 0.1 mg of ZA was diluted with saline and given subcutaneously after expansion: the retention period lasted for 7 days. Computed tomography (CT) measurements were obtained at the start of the study (T1), after expansion (T2), after the retention period (T3), and after the follow-up period (T4). The amount of expansion and relapse and the density of the newly formed bone in the expansion area were measured. The mean bone density values in hounsfield unit (HU) of the newly formed bone were recorded using MX View Workstation. Data were analysed using the Kruskal-Wallis, Friedman, Wilcoxon, and Mann-Whitney U-tests. The results showed that there were significant differences between the groups in the density of newly formed bone after the retention period (P < 0.05). Statistically significant differences were observed when the relapse percentages were compared between the groups (P < 0.05). ZA stimulated bone formation and decreased the relapse ratio after expansion in the rat sagittal suture.Öğe Identical unerupted maxillary incisors in monozygotic twins(MOSBY-ELSEVIER, 2010) Babacan, Hasan; Ozturk, Firat; Polat, Hidayet BurakMesiodens is the most common type of supernumerary tooth found in the premaxilla. It might be discovered by the orthodontist by chance on a radiograph or as the cause of an unerupted maxillary central incisor. The genetic transmission of supernumerary and impacted teeth is poorly understood. The occurrence of identical unerupted maxillary central incisors and mesiodentes in monozygotic twins suggests that genetic factors might influence the etiology of this problem. In this case report, we discuss the treatment of unerupted maxillary permanent incisors caused by mesiodentes in monozygotic twins. (Am J Orthod Dentofacial Orthop 2010;138:498-509)Öğe Multiple Purpose Essix Appliance(Aves Press Ltd, 2008) Babacan, Hasan; Ozturk, Firat; Doruk, CenkA new design of Essix appliance and its fabrication are described in this article. This case report illustrates both correction of anterior cross bite and distal movement of maxillary molars. This new vacuum formed Essix appliance can be a reasonable alternative to conventional appliances.Öğe Orthodontic treatment of a patient with oral-facial-digital syndrome(MOSBY-ELSEVIER, 2012) Ozturk, Firat; Doruk, CenkOral-facial-digital syndrome is characterized by heterogeneous clinical features involving malformations of the face, oral cavity, and digits. The syndrome has been reported only in women, suggesting that it is lethal in males. Affected females have malformations of the oral cavity (cleft palate, lip and tongue, abnormal dentition, and hamartomas), face (hypertelorism and milia), and digits (syndactyly, brachydactyly, and polydactyly). In this article, we report the orthodontic treatment of a 21-year-old woman with oral-facial-digital syndrome. (Am J Orthod Dentofacial Orthop 2012;141:S110-8)Öğe The Relationship of Orthodontic Treatment Need with Periodontal Status, Dental Caries, and Sociodemographic Factors(HINDAWI PUBLISHING CORPORATION, 2012) Nalcaci, Ruhi; Demirer, Serhat; Ozturk, Firat; Altan, Burcu A.; Sokucu, Oral; Bostanci, VildanThe aim of this study was to determine the relationship of orthodontic malocclusion with periodontal status, dental caries, and sociodemographic status. Our study population consisted of a sample of 836 school children (384 male and 452 female, aged 1114 years). Four experienced orthodontists and two experienced periodontists performed the clinical examinations. The Treatment Priority Index (TPI), Community Periodontal Index of Treatment Needs (CPITN), decayed, missing, filled teeth (DMFT) scores, and a questionnaire that surveyed socio-demographic status of students were used. Spearman's rank correlation coefficients were used to measure the association between variables. TPI scores showed that 36.4% of the students had normal occlusion, while 41.2% had slight, 15.7% had definite, 4% had severe, and 2.7% had very severe malocclusion. TPI values did not show any significant differences between pupils in different age, gender, socioeconomic status groups, and CPITN scores, whereas there was a significant relationship between TPI and DMFT scores. The orthodontic treatment need was not significantly correlated with CPITN or socio-demographic status; however, the correlation coefficient showed a significant relationship between TPI and DMFT scores.Öğe Simplified Indirect Bonding Technique for Lingual Retainer Fabrication(Aves Press Ltd, 2012) Ozturk, Firat; Babacan, Hasan; Topcuoglu, TolgaAim: The aim of this study was to describe a simplified technique for fabricating an indirectly bonded lingual retainer using a light cure composite resin and clear tape. Subjects and Methods: Lingual retainers, made of dead soft wire, were tended to the lingual contour of the lower incisors on the stone models of patients and placed to the mouth. Fabricating lingual retainers with this method were used in 6 patients who were followed for 6 months. Results: During this period, failures occurred in 2 teeth. One failure was on a canine; the other one is on an incisor. Conclusion: Due to the isolation done with a clear tape in this method, there is no need for an extra procedure for the removal of the remnants of the separating medium from the resin surface. These extra procedures applied can cause the degradation of the resin surface which may lead to bonding failures (Turkish J Orthocl 2012;25:47-52)
