Table 5.
Mean equivalent dose to tissue or organs and total equivalent dose during panoramic exposure of the four machines (μSv)
| Machine | Bone marrow | Thyroid | Oesophagus | Skin | Bone surface | Salivary glands | Brain | Remainder tissues or organs | Total dose | |||
| Lymphatic nodes | Extrathoracic region | Muscles | Oral mucosa | |||||||||
| OP200 | ||||||||||||
| a | 9.94 | 27.89 | 1.97 | 4.16 | 40.34 | 311.78 | 10.03 | 12.16 | 200.46 | 12.16 | 282.51 | 913.3924 |
| b | 9.05 | 25.20 | 1.83 | 4.33 | 36.71 | 308.48 | 11.29 | 11.60 | 191.37 | 11.60 | 270.99 | 882.4716 |
| c | 8.83 | 26.56 | 1.87 | 4.15 | 35.80 | 297.89 | 10.06 | 11.36 | 187.40 | 11.36 | 265.69 | 860.9635 |
| Orthophos CD | ||||||||||||
| a | 10.74 | 67.87 | 4.25 | 10.14 | 43.57 | 419.17 | 9.41 | 13.93 | 230.78 | 13.93 | 318.72 | 1142.5140 |
| b | 11.43 | 58.87 | 4.29 | 6.77 | 46.35 | 449.58 | 12.89 | 14.81 | 245.43 | 14.81 | 338.83 | 1204.0510 |
| c | 11.95 | 55.53 | 3.47 | 7.44 | 48.47 | 442.33 | 15.00 | 14.95 | 247.81 | 14.95 | 342.74 | 1204.6570 |
| Orthophos XG plus | ||||||||||||
| a | 15.99 | 54.60 | 3.89 | 8.16 | 64.85 | 604.05 | 18.41 | 20.45 | 337.49 | 20.45 | 471.52 | 1619.8630 |
| b | 10.78 | 43.95 | 2.81 | 6.36 | 43.74 | 384.17 | 12.68 | 13.42 | 222.39 | 13.42 | 309.34 | 1063.0580 |
| c | 10.94 | 41.56 | 2.91 | 6.56 | 44.37 | 425.72 | 11.23 | 14.44 | 238.62 | 14.44 | 334.59 | 1145.3610 |
| ProMax® | ||||||||||||
| a | 14.53 | 54.95 | 4.05 | 5.10 | 58.95 | 939.55 | 15.12 | 30.25 | 496.98 | 30.25 | 739.14 | 2388.8740 |
| b | 13.95 | 42.60 | 3.11 | 4.93 | 56.59 | 796.95 | 16.21 | 26.49 | 435.40 | 26.49 | 644.62 | 2067.3220 |
| c | 13.59 | 45.45 | 3.37 | 4.80 | 55.11 | 839.01 | 13.84 | 27.27 | 448.01 | 27.27 | 665.21 | 2142.9170 |
a, Without collar around the neck; b, with one collar tightly around the front of the neck; c, with two collars tightly around both the front and the back of the neck.
Orthopantomograph OP200 is manufactured by Instrumentarium Dental, Tuusula, Finland; Orthophos CD by Sirona Dental Systems GmbH, Bensheim, Germany; Orthophos XG plus by Sirona Dental Systems GmbH; and ProMax by Planmeca Oy, Helsinki, Finland.