Central odontogenic fibroma of the mandible: a case report.

Central odontogenic fibroma (COF) is a rare tumor that accounts for 0.1% of all odontogenic tumors. It has been defined as a benign neoplasm, which appears in the jaw.

[Frequency and causes of extraction of permanent teeth. 2. Ten-year (1978-1987) clinicostatistical investigation].

The purpose of this clinical investigation was to analyze the frequency and the causes of mortality (loss) of 59,253 permanent teeth, extracted, during a ten-year (1978-1987) period, in Clinic Exodontia of Dental School University of Athens, at 35,830 population of Greece (15,260 males and 20,570 females). The following conclusions were drawn from the statistical analysis and the interpretation of the results: The mean value of extracted teeth per person was 1.65 and was lower in females (1.

[Topographic evaluation of the impacted mandibular third molar. Radiographic study].

Preoperative planning of surgical extraction of a wisdom tooth is always necessary. Accurate evaluation of its position and relation to the other surrounding anatomical structures is facilitated by radiographic examination. Nine hundred sixty one radiographs of patients who came to the clinic of Exodontia and Radiology were used.

[Multiple impaction teeth. Clinical and radiological study in patients with three or more impacted teeth].

The cause, the frequency, the complications and the surgical operation of impacted teeth is always an interesting subject of study and research. The purpose of this investigation was to determine the frequency and the kind of the teeth in the multiple impaction to Greek population. The material of this study was 1740 Greek (870 men and 870 women) over 20 years old.

[The types of the mandibular canal].

The purpose of the present study was to determine after studying 700 panoramic radiographs, the incidence of the various types of the mandibular canal and their relationship to sex. Our results indicate that in descending order of frequency of occurrence type III (the canal is located close to the lower border of the mandible) is the most common, followed by the type II (the canal is noted between the apices of the first and second molars and the lower border of the mandible) and the type I (the canal is in close contact with the apices of the first and the second molars). Only three cases showed bifid mandibular canal.