Investigation of tooth transposition in a non-syndromic Turkish anatolian population : characteristic features and associated dental anomalies

Objective: The aims of this study were to investigate the frequency and characteristics of dental transpositions and to evaluate associated dental anomalies in a large sample of Turkish Anatolian population. Study design: A retrospective study was performed using panoramic radiographs of 6983 patients (4092 females and 2891 males) ranging in age from 12 to 27 subjected to Faculty of Dentistry at the University of Ataturk (Erzurum, Turkey) between 2005 and 2008. For each patient with tooth transposition we recorded the demographic variables (including age, sex), history of trauma, type, classification, and location of tooth transpositions, and associated dental anomalies. The Pearson chi-squared test was used to determine potential differences in the distribution of tooth transposition when stratified by gender. Results: Tooth transposition was detected in 19 subjects (0.27%), with a 2.2:1 female male ratio (P= 0.38). The most commonly observed transposition was maxillary canine-lateral incisor (60%). The frequencies of complete and incomplete transpositions were equal (10/10) and it was more common in the left side than in the right side (11/9). Of the 19 subjects, 10.5% had a peg shaped lateral incisor, 21.1% one congenitally missing tooth excluding third molar. Supernumerary tooth, impacted teeth excluding third molars, transmigrated tooth, and dilacerations were also observed. Conclusion: The frequency of tooth transposition was 0.27% in a Turkish Anatolian population and maxillary canine-lateral incisor was the most frequently observed transposition. Retained primary teeth were the most frequently observed dental anomaly in all types of tooth transposition

Bilateral bifid mandibular canal: a case report

The objective of this case report is to help clinicians identify bifid mandibular canals on panoramic radiographs and subsequently use the information in the modification of dental treatment planning. A 45-year old man was referred to the service of Oral Diagnosis and Radiology. Routine panoramic radiography, suggested the presence of bilateral bifid mandibular canals (BMC). Mandibular computed tomography revealed a clear view of bilateral mandibular canals. BMC can be detected on a panoramic radiograph

Frequency and characteristics of tooth agenesis among an orthodontic patient population

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 (p0.05). 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 grou

The frequency and characteristics of idiopathic osteosclerosis and condensing osteitis lesions in a Turkish patient population

Objectives: The objective of this study was to investigate the frequencies of idiopathic osteosclerosis (IO) and condensing osteitis (CO) in a Turkish patient population with respect to age and sex, in addition to shape, localization, and the dental relationship of IO and CO lesions. Patients and methods: A retrospective study was performed using panoramic radiographs of 6,154 patients ranging in age from 5 to 69 subjected to dental treatment. Descriptive characteristics of radiopacities, including shape, localization, and dental relationship were recorded. The Chi-squared test was used. Results: There were 238 radiopacities detected, 185 IO lesions in 150 (2.44 %) subjects (96 female, 54 male and mean age: 26.2), and 53 CO lesions in 50 (0.81 %) subjects (27 female, 23 male and mean age: 32.8). Both IO and CO lesions were found to be higher in number among females when compared to males. However, this difference was statistically significant only for IO lesions (p<0.001). The frequency of IO lesions was found to be significantly higher in the 3rd and 4th decades of life (20-39 years) than in other decades (p<0.001). On the other hand, the frequency of CO lesions was the similar in the age ranges of 20-39 years and 40-69 years, and its frequency in these periods was statistically higher than in the 1st and 2nd decades of life (p<0.01). Conclusion: Our results point to the low IO and CO frequency among the Turkish population. In addition, our findings support the theory that IO lesions are developmental variations of normal bone architecture unrelated to a local stimulant and CO lesions could be considered reactive formations related to teeth with severe caries, restoration, or pulpitis

Identification of the mandibular landmarks in a pediatric population

Objectives: The aim of this study was to determine and compare the reliability to accomplish of common man - dibular landmarks and to determine the incidence of incisive canals, anterior looping, and lingual foramina in children from panoramic and CBCT images. Study Design: Panoramic and CBCT images from 100 children and adolescent patients were randomly selected. In order to grade the visibility of mandibular anatomical landmarks, a four-point rating scale was used. Results: In panoramic images, the mandibular canal could be observed in 92.5% of cases, with good visibility in 12.0%. The mental foramen could be observed in 44.5% of cases, while none had good visibility. Anterior looping of the mental nerve was present in 16.5% of the cases, and none had good visibility. An incisive canal could be identified in 22.5% of cases, with only 1.5% showing good visibility. The lingual foramen could be visualized in 61.0% of cases, with good visibility in 6%. In CBCT images, the mandibular canal, the mental foramen, and the lingual foramen could be observed in 100% of the cases, with good visibility in 51.0%, 98.5%, and 45.0% of cases, respectively. Anterior looping of the mental nerve was present in 26% of cases, with 2% having good visibility. An incisive canal could be identified in 49.5% of cases, with only 75% showing good visibility. Conclusions: This study confirms the applicability of CBCT images to visualize critical structures in children

The prevalence of root dilacerations in a Turkish population

Objectives: The aim of this study was to determine the prevalence of root dilaceration in a Turkish dental patient population with respect to sexes and dental localization in relation between sex and this anomaly. Study Design: A retrospective study was performed using periapical radiography of 2,124 patients ranging in age from 15 to 65. All data (age, sex and systemic disease or syndrome) was obtained from the files. These patients were analyzed for root dilaceration. Descriptive characteristics of sexes, jaws, and dental localization were recorded. The Pearson chi-squared test was used. Results: Of 2,251 patients, 214 (9.5%) had root dilaceration. Root dilacerations were determined in 276 (4.3%) of 6386 teeth belong to 2251 patients. Anomalies were found in 9.8% of males compared with 9.3% of females. However, this difference was not statistically significant (p>0.05). Root dilacerations were similarly distributed between maxilla and mandible. The most frequently root dilacerated teeth were found to be mandibular third molars (12.8%), followed by maxillary third molars (7.4%), maxillary first molars (6.7%). Root dilaceration was not detected in maxillary central incisors, mandibular central incisors and mandibular lateral incisors. Conclusion: According to our results, root dilaceration is an uncommon developmental anomaly which mostly occurs in the posterior teeth that is not also possible to have trauma. The radiographic diagnosis of this anomaly is important before surgery and orthodontics treatment, but firstly endodontic treatment

Correlation between oral health-related quality of life (OHQoL) and oral disorders in a Turkish patient population

Objectives: The purpose of the present study is to determine the nature of the complaints that bring patients to our clinic and to what degree these complaints affect their quality of life (QoL). We also aimed to determine any associations between gender, education or harmful habits and each patient?s oral health-related quality of life (OHQoL). Methods: A total of 1090 patients, consisting of 651 females (59.7 %) and 439 males (40.3 %), were included in this study. Of these patients, 220 constituted healthy controls. Two patient-centered outcome measures, the 14 item OHIP-14 and the 16 item OHQoL-UK measures were used. Results: Most of the patients presented with toothache and caries (50.1 %), 11.2 % had suffered tooth loss and had denture needs, 9.2 % had periodontal problems, 1.8 % had temporomandibular joint (TMJ) disorders, 3.8 % had buried third molars, 2.4 % had orthodontic and aesthetic disorders, 1.3 % had suffered injury due to trauma, and 20.2 % came only for control checkups. OHQoL was best in the control group and the worst in patients who had suffered trauma. In addition, we noted correlations between gender, education and harmful habits, and that of the patient?s oral health-related quality of life. Conclusion: According to our results, OHQoL is associated with the oral complaints of patients. Furthermore, OHQoL may not only be associated with the oral health status of patients, but factors such as gender, education and harmful habits may also play a role