Evaluation of mandibular asymmetry in angle malocclusion samples by posterioanterior cephalometric radiography: A preliminary study.

OBJECTIVES: The aim of this study was to evaluate the effect of different occlusion types on mandibular asymmetry in different anatomical points using posteroanterior cephalometric radiography. MATERIALS AND METHODS: This study was retrospectively conducted on 100 patients whose posteroanterior images and malocclusions were registered in a patient database. Asymmetry indices were determined using four linear measurements on images, and the effect of malocclusions, age, and gender on these asymmetry indices was investigated. P <0.05 was considered statistically significant. RESULTS: Right and left horizontal plane gonion distance values varied according to gender, right vertical plane condylar distance and left horizontal plane gonion distance values varied according to age, and right vertical plane condylar distance and left horizontal plane gonion distance values varied according to malocclusions. CONCLUSION: The measured values of some parameters varied according to age, gender, and malocclusion. Although vertical plane gonion asymmetry index and horizontal plane condylar asymmetry index values varied according to gender, there was no relationship between asymmetry index values of all parameters with age and malocclusion.

Investigation of prevalence of dental anomalies by using digital panoramic radiographs.

BACKGROUND: This study was performed to evaluate the prevalence of all types and subtypes of dental anomalies among 6- to 40-year-old patients by using panoramic radiographs. MATERIALS AND METHODS: This cross-sectional study was conducted by analysing digital panoramic radiographs of 1200 patients admitted to our clinic in 2014. Dental anomalies were examined under 5 types and 16 subtypes. Dental ano-malies were divided into 5 types: (a) number (including hypodontia, oligodontia and hyperdontia); (b) size (including microdontia and macrodontia); (c) structure (including amelogenesis imperfecta, dentinogenesis imperfecta and dentin dys-plasia); (d) position (including transposition, ectopia, displacement, impaction and inversion); (e) shape (including fusion-gemination, dilaceration and taurodontism). RESULTS: The prevalence of dental anomalies diagnosed by panoramic radiographs was 39.2% (46% in men and 54% in women). Anomalies of position (60.8%) and shape (27.8%) were the most common types of abnormalities and anomalies of size (8.2%), structure (0.2%) and number (17%) were the least in both genders. Anomalies of impaction (45.5%), dilacerations (16.3%), hypodontia (13.8%) and taurodontism (11.2%) were the most common subtypes of dental anomalies. Taurodontism was more common in the age groups of 13-19 years. The age range of the most frequent of all other anomalies was 20-29. CONCLUSIONS: Anomalies of tooth position were the most common type of dental anomalies and structure anomalies were the least common in this Turkish po-pulation. The frequency and type of dental anomalies vary within and between populations, confirming the role of racial factors in the prevalence of dental ano-malies. Digital panoramic radiography is a very useful method for the detection of dental anomalies. (Folia Morphol 2018; 77, 2: 323-328).

Comparison of antegonial index, mental index, panoramic mandibular index and mandibular cortical index values in the panoramic radiographs of normal males and male patients with osteoporosis.

OBJECTIVE: The aim of the study was to compare the values of the antegonial index (AI), mental index (MI), panoramic mandibular index (PMI) and mandibular cortical index (MCI) in the panoramic radiographs of normal males and male patients with osteoporosis. METHODS: In panoramic radiographs obtained from 40 male individuals (20 normal and 20 with osteoporosis), the mean was calculated for MI, AI, PMI and MCI index values measured in the right and left mandibles. The MI, AI and PMI index values were evaluated using the paired t-test, and MCI values were analysed using the chi(2) test. RESULTS: MI (P < 0.001), AI (P < 0.01) and PMI (P < 0.05) values were significantly smaller in the group with osteoporosis; however, MCI (P > 0.05) was not significantly different. CONCLUSION: MI, PMI and AI values, as radiomorphometric indices, were found to be smaller among male patients with osteoporosis, compared with normal patients in this study. It is suggested that these indices, used as an ancillary method in the diagnosis of osteoporosis in women, could also be useful for male patients. Further studies, of larger groups are needed on this subject, including of the MCI, which in this study showed no significant difference.

Adenomatoid odontogenic tumour (adenoameloblastoma). Case report and review of the literature.

An adenomatoid tumour was found in the anterior maxillary region of a 15 year old female patient. Two impacted teeth were found in the tumour. The lateral incisor found in the tumour was dilacerated, and the roots of the first premolar were resorbed. A review of the English literature indicated that 294 similar cases have been reported.

Ectodermal dysplasia. A case with impacted permanent teeth.

An unusual case of ectodermal dysplasia is presented. Besides the main symptoms of ectodermal dysplasia, congenitally missing teeth and the impaction of all the other existing permanent teeth make this case interesting.

Central mucoepidermoid carcinoma of the jaws. Review of the literature and case report.

A CMEC which occurred within the right maxillary canine-third molar region of a 34-year-old male was presented. The clinical symptoms were swelling and pain. Radiologically the lesion looked like an ameloblastoma or residual cyst. Hemimaxillectomy was the treatment. No evidence of recurrence has been observed for ten months after the operation.

Radiographic study of mandibular nutrient canals.

This study was undertaken to determine the correlation between the presence of nutrient canals in the mandibular anterior region and sex, age, edentulous mandible, periodontal disease, and high blood pressure. The periapical roentgenograms taken from the mandibular anterior region of 1040 patients were examined. According to the data obtained from the present study, the occurrence of nutrient canals in the mandibular anterior region seemed related to age, edentulous mandible, periodontal problems, and high blood pressure. However, no relation to sex was found.

Multiple bilateral dens invaginatus and an impacted cuspid in the maxillary incisor region. Case report.

A case of multiple bilateral dens invaginatus in the maxillary incisor teeth and an impacted cuspid has been presented. The impacted cuspid was removed surgically.