Purpose: The objectives of this study were to investigate the prevalence and characteristics of tooth agenesis and the associated skeletal morphology and arch widths in a group of Turkish patients seeking orthodontic treatment. Material and Methods: We designed a retrospective study composed of pre-and post-treatment panoramic radiographs and lateral cephalometric films of 3,341 patients (2,040 females and 1,301 males). Tooth agenesis was evaluated for hypodontia and oligodontia -excluding the third molars-from the orthopantomograms. The significance test for the differences in the skeletal morphology between hypodontia and non-hypodontia patients was performed using the Pearson chi-square and Student t-test. Results: The prevalence of tooth agenesis was 4.6 percent for the Turkish orthodontic patient population. Tooth agenesis was found more frequently in females than in males, although this difference was not statistically significant (p>0.05). The most commonly missing teeth were the maxillary lateral incisors, followed by the mandibular second premolars and mandibular central incisors. Intercanine and intermolar widths in the maxillary and mandibular arches were significantly reduced in the hypodontia group compared with the control group (p<0.01). Tooth agenesis was statistically and significantly less in patients with skeletal Class II (p<0.01). There was no statistically significant difference in hypodontia patients in the vertical relationship of the jaws (p>0.05). Conclusions: The prevalence of tooth agenesis was found to be 4.6 percent for the Turkish orthodontic patient population (hypodontia 4.3% and oligodontia 0.3%), and was found more frequently in females. Intercanine and intermolar widths were significantly reduced in the hypodontia group for both jaws compared with the control group.

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Background/purpose: The aims of this study were to determine the frequency and distribution of developmental anomalies in the permanent teeth of a Turkish orthodontic patient population and determine the relationships between gender and dental anomalies. Materials and methods: A retrospective study was performed using pretreatment dental casts, panoramic radiographs, and intraoral photographs of 3165 Turkish orthodontic patients (1940 females and 1225 males) aged 9e25 years. These patients were analyzed for evidence of four types of developmental anomalies (tooth form, number, position, and structural dental anomalies). Descriptive characteristics of these dental anomalies, including gender, jaws, and sides of the jaw were recorded. The Pearson c 2 test was used for the statistical analysis. Results: In 452 (14.3%) of 3165 orthodontic patients, at least one permanent teeth anomaly was detected. Developmental dental anomalies were found in 15.05% of females compared with 13.06% of males. Impacted teeth were the most frequent dental anomaly (4.55%), followed by hypodontia (4.30%), peg-shaped lateral incisors (2.15%), ectopic eruption (1.52%), and hyperdontia (1.30%). Peg-shaped lateral incisors, hypodontia, oligodontia, transposition, transmigrant canines, ectopic eruption of canines, impacted teeth, and amelogenesis imperfecta were more common in females, whereas macrodontia and hyperdontia were more common in males. However, these differences were not statistically significant except for hypodontia and hyperdontia.

Objectives:The aim of this study was to investigate the frequency and characteristics of mesiodens among a group of orthodontic patients in Turkey.Methods:A retrospective study was performed using panoramic radiographs of 3,351 patients ranging in age from 8 to 16 subjected to dental treatment in the Department of Oral and Maxillofacial Radiology and Department of Orthodontics (Erzurum, Turkey) between 1996 and 2008. All medical and demographic data (age and sex) were obtained from the files. Descriptive characteristics of mesiodentes, including number, shape, position, complication caused by mesiodens and treatment were recorded. The Chi-squared test was used.Results:Results show that the frequency of mesiodens was 0.3% with the ratio of boys (6 cases) to girls (4 cases) being 1.5:1 and this was not statistically significant (P>.05). Of the 10 children, 8 (80.0%) had 1 mesiodens and 2 (20.0%) had 2 mesiodentes bilaterally to midline. Of the 12 mesiodentes, 8 (66.7%) were fully impacted, 7 (58.3%) in a vertical position and 9 (75.0%) conical shape. The most common complication caused by mesiodens was delayed eruption of the permanent incisors in 4 cases (40.0%).Conclusions:The frequency of mesiodens in Turkish orthodontic patients was found to be 0.3% and more frequently in males with the ratio being approximately 1.5:1. Most of the mesiodentes were in conical shape (75.0%). Sixty-seven percent of the cases were fully impacted.

Aim:The aim of this study was to determine the frequency and distribution of third-molar agenesis in orthodontic patients from the East Anatolian Region of Turkey. Methods and Materials:Our data were obtained from the panoramic radiographs of the 2,579 patients 12 to 16 years of age in the Department of Orthodontics at the Atatürk University in Erzurum, Turkey. Subjects with congenital deformities, such as a cleft palate, were excluded from the study. Statistical analysis was performed using SPSS software and a chi-squared test.Results: Of the 2,579 subjects, 1,964 (76.2 percent) had all four third-molar teeth, 238 (9.2 percent) had three, 214 (8.3 percent) had two, 66 (2.6 percent) had one third molar, and 97 (3.8 percent) had agenesis of all third-molar teeth. There was no significant difference in agenesis of third-molar teeth between the right and left sides and no gender predilection was noted. However, significantly more third-molar teeth were found to be missing from the maxilla compared to the mandible, with a ratio of approximately 1.5:1.Conclusion: According to our results, the absence of one third molar is the most frequently detected pattern in the East Anatolian population. Additionally, the absence of third molars is more frequent in the maxilla than the mandible. Clinical Significance:To date no information about third-molar agenesis in the East Anatolian population from Turkey is documented. This is believed to be the first known study on this subject in this population.

ObjectivePatients' and parents' expectations are important in orthodontic treatment decision making. The literature generally demonstrates the perceived benefits of orthodontic treatment, but patients' and their parents' concerns about orthodontic treatment have not been investigated comprehensively. The aim of this study was to identify patients' and parents' concerns about orthodontic treatment and compare them according to sex, age, and treatment demand level.MethodsOne hundred and eighty-nine children and their parents were interviewed about concerns related to orthodontic treatment. Patients and parents were asked about orthodontic treatment decisions. Answers were recorded as "yes," "no," or "don't know." Chi-squared and Fisher's exact tests were used to compare concerns between age groups, sexes, and treatment demand levels. Kappa statistics were used to assess agreement between patients and their parents.ResultsConcerns about orthodontic treatment were gathered under 10 items as follows: "feeling pain," "the appearance of braces," "being teased," "avoiding smiling," "speech problems," "dietary changes," "problems with transportation," "economic problems," "long treatment duration," and "missing school." There was no statistically significant difference in concerns between the sexes or age groups. Some concern items and treatment demand were inversely related in patients.ConclusionsThe results of this study demonstrate patients' and parents' concerns about orthodontic treatment. Differences between the concerns of patients with different treatment demands imply that children might reject orthodontic treatment because of their concerns. Appropriate consultation of patients addressing their concerns may help reduce anxiety and improve the acceptance of treatment.

Objective: The present study aimed to evaluate the effects of ozone and prophylactic antimicrobial applications on the shear bond strengths and bond failure interfaces of orthodontic brackets.

Son yıllarda bazı merkez bankaları, para politikası yönetimlerinde zorunlu karşılık uygulamalarını sürdürmekte olup, bu merkez bankalarının bazıları zorunlu karşılıklara faiz ödemesi yapmaktadırlar. Türkiye Cumhuriyet Merkez Bankası (TCMB) da bu merkez bankalarına benzer olarak hem konvansiyonel hem de katılım bankalarından aldığı zorunlu karşılıklara belli bir oranda faiz ödemesi yapmaktadır. Katılım bankaları faizsiz bankacılık prensiplerine uymak zorunda olduklarından, tahsil ettikleri bu faizleri herhangi bir şekilde kullanamazlar. Karz sözleşmeleri borç veren tarafa herhangi bir getiri kazandırmadığı durumda fıkhi açıdan uygun görülen bir sözleşme türüdür. Enflasyonun yüksek olduğu dönemlerde ise borç veren taraf, verdiği kadarlık bir bedeli geri aldığı zaman enflasyon oranı kadar zarar edecektir. Bu nedenle çağdaş fakihler, verilen borcun geri ödenmesinde paranın değer kaybıyla oluşan zararın telafi edilmesini fıkhi açıdan uygun bulmaktadırlar. Fıkhi açıdan verilen bu uygunluğa istinaden bu makalede, TCMB'nin Türk lirası ve ABD doları zorunlu karşılıkları katılım bankalarından karz sözleşmesine göre alması ve aldığı bedel karşılığında faiz yerine enflasyona endeksli bir getiri ödemesi yapması üzerine bir yaklaşım sunulmuştur.