Uses of dental X-rays:
-to diagnose cavities
-identify the broken or crooked roots of
teeth
-view the bone health or periodontal
disease around the teeth
-identify the status of developing tooth
-monitoring the oral dentition health
There are several types of x-rays routinely used and categorized
into the intraoral and extraoral radiograph. Intraoral x-rays include: Periapical
radiograph(PA), bite-wing, occlusal x-rays. The extraoral x-rays are: Panaromic
x-rays (Orthopantomagram(OPG), lateral cephalogram) and computed tomography (cone
beam CT(CBCT)).
Intraoral Radiography:
- 1. Periapical x-rays
- 2. Bite-wings x-rays
- 3. Occlusal x-rays
Extraoral Radiography:
- 1. Panaromic X-rays
- a) Orthopantomogram (OPG)
- b) Lateral cephologram
- 2. Computed tomography (CBCT)
-produce three-dimensional images of the
teeth and jaw bones.
Concerns of dental x-rays:
Dental x-rays emit a small dose of
radiation (0.0005-0.2mSv) and represents a minor contribution to the total
exposure of natural and man-made sources. These are used with caution and used only
when necessary.
Steps taken to reduce the radiation exposure
includes:
-wearing of lead shields or apron before
getting x-rays
-using better film (F-speed film which is
the fastest film can limit the amount of radiation)
-digital radiography (reduces the amount of
radiation as much as 80%)
- having regular inspection and licensing
(to ensure the X-ray machines are safe and accurate)
-using film holders (prevents exposure to
fingers holding the film in the mouth)
X-rays during pregnancy
Most of the pregnant patients concern about
the safety of taking x-rays during pregnancy. American Dental Association (ADA)
recommends the use of aprons with thyroid shields for pregnant patients. Studies
of pregnant patients receiving dental care have affirmed the safety of dental
treatment.
X-rays in children
Besides that, many patients are worried if
x-rays are safe for their children. The American Academy of Pediatric Dentistry reassures parents that the amount of radiation received
during a dental X-ray is extremely small. Nowadays, X-ray equipment lets
dentists focus the X-ray beam on the area of interest to reduce radiation
exposure.
