Search PubMed⌕ Search

Biomedical subjects

J R Patel

Publications and source records attributed to J R Patel.

76 records · Page 5Linked to original sources
PubMed1976

A radiographic study of nutrient canals.

The purpose of this investigation was to determine the incidence of nutrient canals in a randomly selected population and to correlate the presence of nutrient canals with a variety of factors related to the life of the individual. One hundred sixty patients, 25 years of age or older, having at least six teeth in each arch and requiring a complete-mouth radiographic survey were used. Nutrient canals were found associated with race, high blood pressure, advanced periodontal conditions, multidirectional trabeculae, and small trabecular spaces.

Adult↗
PubMedDate not supplied

Kilovoltage peak and half value layer relationships of a dental X-ray machine.

This study compares the recorded kilovoltage peak (kVp) on the control panel versus actual kVp measured by the Photon Physics instrument and Non-invasive Evaluator of Radiation Output (NERO) System. The study also measures the effects of kVp and milliampere (mA) on Half Value Layer (HVL). Kilovoltage peak was measured using a photon physics instrument and the NERO system. Half value layer was measured using aluminum as the absorber. The kVp and HVL were measured from 50 to 100 kVp at 5 kVp intervals using both 10 mA and 15 mA. Results show a 2 to 6 kVp difference between recorded kVp on the control panel of the dental x-ray machine and measured kVp using the photon physics instrument. There was 10-15 kVp difference between the recorded kVp on the control panel and kVp measured with the NERO Quality Assurance System. The measured kVp on photon physics or NERO system was always greater than the recorded kVp on the control panel. The HVL increased as the kVp increased for both 10 mA and 15 mA settings. However, above 80 kVp, the HVL increase was not significant.

Absorption↗
PubMedDate not supplied

Cherubism: report of three cases.

Cherubism is a very rare, inherited autosomal-dominant disease, affecting mostly the mandible. Usually the chief complaint on examination is painless bilateral swelling involving the angles of the mandible. On palpation, the lesions are hard and the jaw is expanded; often there is displacement of erupted teeth.

Adult↗