Biomedical subjects

P Simeon

Publications and source records attributed to P Simeon.

3 recordsLinked to original sources

PubMed1998

"C"-shaped canal configuration of mandibular second permanent molar.

Roots of the second mandibular molar often fuse so the purpose of this investigation was to examine the appearance of "C"-shaped root canals and to classify different root canal types. A hundred and twelve randomly chosen second lower permanent molars-after extraction due to periodontal disease-were prepared and then analysed. Contrast liquid (methylene blue) was injected into prepared teeth. Each tooth was cut into slices to view the root canal morphology. Results of the analysis revealed fusion, either total or partial in 14 cases (12.5%). As a conclusion various appearances were classified into 5 types according to the fused canal shapes and the frequency of different types varied from 0.89%-6.25%.

Dental Pulp Cavity↗

PubMed1998

Morphometrical analysis of main and accessory canals in apical root portion of frontal teeth.

Reviewing radiographs may often lead to a wrong conclusion regarding root canal ending (apical constriction) and anatomical apex of the tooth root. Anthropological measurements may help clinicians to understand better root canal ending aberrations in a sense to decide whether to do a revision of the root canal filling or not. The object of this investigation was to examine the deviation frequency, the distance of the major apical foramen from the anatomical apex and occurrence and number of accessory canals in the apical third of the frontal teeth roots. A total of 156 randomly chosen upper and lower permanent incisors and canines, after extraction due to periodontal disease were prepared for the investigation. The access cavity was prepared and root canal therapy was initiated just to prepare endodontic space for methylene blue dye injection. Methylene blue clearly dyed all root canal exits and after that the teeth were cut and examined with a stereomicroscope and a sliding scale. Results indicate that deviation frequency was found in 60.25% of the cases and the mean distance between deviated major foramen and the anatomical root apex was 0.35 mm. Accessory canals were found in 33.33% of the cases in the apex third of the root. Data were statistically elaborated with the method of Chi-square test.

Dental Pulp Cavity↗

PubMed1992

Infectious discitis caused by Enterobacter cloacae.

The case is reported of a patient who developed a vertebral osteomyelitis caused by Enterobacter cloacae. The organism was isolated in cultures of blood and vertebral puncture biopsy samples. The patient was satisfactorily treated with trimethroprim and sulphamethoxazole. Enterobacter cloacae, a Gram negative organism, has been confirmed as the cause of bacteremia in patients with burns, urinary infections, in adults with pneumonia, and in children with joint infections. Spondylodiscitis caused by Enterobacter cloacae has not previously been described.

Aged↗