Endodontic enigma : mandibular second premolar with three root canals: a case report.

Location and thorough instrumentation of all the canals in the root of a diseased tooth normally ensure success of the endodontic therapy. Present case was referred for endodontic therapy of mandibular second premolar. Clinical and radiographic examination revealed inadequate root canal filling. Three canals were located. Endodontic therapy was performed under aseptic conditions.

Determination of the morphological irregularities in the middle and apical 1/3rd region of the root canal system of permanent maxillary incisors.

A thorough knowledge of the root canal anatomy and an understanding of its variations from the normal are mandatory for the successful root canal therapy. The assessment and exploration of the accessory canal and apical delta is necessary to combat the persistent infection at the periapical area. The purpose of this study is to determine the morphological irregularities in the middle and apical 1/3rd region of the root canal system of maxillary incisors. A total of 100 maxillary incisors were decalcified, processed, sectioned at the middle and apical 1/3rd region and observed under an ordinary microscope. The frequency of accessory canals, apical delta and type of canal configuration were studied. Accessory canals were found in 5% of the teeth. There was absence of apical delta in all the specimens. Total specimens showed single canal extended from the pulp chamber to the apex (Type 1 canal configuration).

Cancer profile in Surat and its vicinity.

A retrospective study of cancer was conducted in the region of South Gujarat particularly in Surat and its vicinity over a period of 6 years (1980-85) to determine type and frequency of occurrence of various malignancies. During this period 2358 new cancer cases were recorded. A total of 60 types of cancer have been detected and confirmed histopathologically. Oral, laryngeal and oesophageal malignancies were common in males. In females, cancer of breast formed the largest group followed by cancer of cervix. A comparative high rate of lung and testicular cancers was recorded in males. In females, cancers of ovary, stomach and lung were more common. In the present study, the incidence of leukaemias was recorded to be low as compared with other types of cancer. Lack of awareness and ignorance of the disease, addiction to tobacco and alcohol and increasing environmental pollution could be some of the factors responsible for higher incidence of cancers.