We are using cookies to implement functions like login, shopping cart or language selection for this website. Furthermore we use Google Analytics to create anonymized statistical reports of the usage which creates Cookies too. You will find more information in our privacy policy.
OK, I agree I do not want Google Analytics-Cookies
Quintessence International
Login:
username:

password:

Plattform:

Forgotten password?

Registration

Quintessence Int 51 (2020), No. 6     20. May 2020
Quintessence Int 51 (2020), No. 6  (20.05.2020)

Page 502-509, doi:10.3290/j.qi.a44495, PubMed:32368765


Radiation dose reduction using novel size 1 and size 0 rectangular collimators in pediatric dental imaging
Mupparapu, Mel / Bass, Tetiana / Axline, David / Felice, Marc / Magill, Dennise
Objectives: Commercial intraoral rectangular collimators are available for collimating to size 2 image receptor. The benefits of reducing the x-ray beam to match the area of the image detector in adult intraoral radiography are endorsed internationally. However, in pediatric dentistry the image receptor can be further decreased to size 1 and 0.
Method and materials: For this study size 1 and 0 rectangular collimators were fabricated using 1.65-mm lead sheets (Rotometals). The custom-fabricated collimators were fixed to the plastic body of a Rinn (Dentsply) Universal Collimator attachment. Aperture sizes were extrapolated based on the active imaging area of size 1 and 0 digital image receptors. A dose area product (DAP) measuring device was used to determine the change in radiation absorbed dose as a function of the imaging field of view.
Results: DAP measurements were evaluated in the 31.7 cm2 conventional round collimation, Rinn 12.0 cm2 Universal rectangular collimator, and in the manufactured size 1 (8.25 cm2) and size 0 (5.72 cm2) rectangular collimators. The size 1 collimator had a 32% DAP reduction from the size 2, and a 53% reduction for the size 0.
Conclusion: Size 1 and size 0 rectangular collimators can be independently manufactured and utilized in pediatric dentistry. This study suggests that a considerable radiation dose reduction is possible in pediatric intraoral imaging when using the size 1 and 0 matched collimation. Since the pediatric population is vulnerable to radiation exposure, any measurable reduction has a potential for long-term health benefits and is therefore clinically significant.

Keywords: dental radiography, diagnostic x-ray, pediatric x-ray dose, radiation protection, rectangular collimation, size 0 rectangular collimator, size 1 rectangular collimator