The aluminum stepwedge was fixed to the radiographic sensor on the longer side (BARBOSA et al.
To measure relative bone density, an aluminum stepwedge is normally used in research as a unit of reference for density measurement, which enables a correlation between the values of bone and metal.
1] by selecting areas of interest in bony regions and the steps of the aluminum stepwedge that showed similarity between the gray tones.
5 cm x 1 mm), which contained a graduated aluminum stepwedge varying from 1 to 10 mm in thickness and uniform steps of 1 mm each.
Both materials overcame 3 steps from the aluminum stepwedge, which is the minimum recommended by ANSI/ADA specification 57 , whereas the pozzolan Portland cements did not meet this requirement (109.
Intensity calibration was carried out using an intensity stepwedge
prior to gel image capture.
Beyer-Olsen, Orstavik  (1981) included in their studies a reproducible comparison standard using a 2-mm-increment aluminum stepwedge to determine the radiopacity of several root canal sealers.
Rochester, NY, USA) next to a graduated aluminum stepwedge with thickness ranging from 2 to 16 mm (in 2 mm-increments) and exposed using a GE-1000 X-ray unit (General Electric, Milwaukee, WI, USA) operating at 50 kVp, 10 mA, 18 pulses/second, and focus-film distance of 33.
Bone mineral density measurements were performed on the panoramic radiographs with the help of a five-step copper stepwedge
phantom, attached to each film cassette, which was calibrated before hand by DEXA.
Exposure times were determined using a stepwedge
to calibrate densities of the three film-speed/collimator combinations to a particular step on the wedge.
This method is specifically indicated for research related to stepwedge penetrometer and photodensitometer.
Este metodo se indica especificamente para la investigacion con el penetrometro stepwedge y el fotodensitometro.