[Determination of absorbed doses of radiation in patients during periapical dental radiography].

Abstract

The aim of this study was to determine the absorbed doses of radiation in the skin region of temporomandibular joint (T.M.J.), maxillary sinus, parotid gland, body of mandible and thyroid gland during 14 periapical radiographs. For this purpose were used: a minim-X, 2000 CIAS international (Kvp:50, mA:10, t:0.1, sec, 0.2 sec), 31 male patients and 31 female patients about the same age, weighing and height who were selected from the Oral Diagnosis Clinic of Athens University, and had indication for periapical dental radiography. The calculation was performed with thermoluminescent dosimeters (T.L.D.) which calibrated by a Known source of Co60 before use. Dosimetry were calculated in T.L.D. detector Model 2000 A-2000 C Harchaw Chemical Co. and the results of calculation which were evaluated statistically using the student t-test, were the following: 1. Dose above 1.00 cGy received the body of mandible region and the maxillary sinus. 2. Dose below 1.00 cGy received the parotid, the T.M.J. and the thyroid region. 3. The male patients received greater doses than the female patients in all anatomical regions which were examined. 4. Doses on the right side were greater than the left side.