Over the past three decades, dentistry has undergone enormous developments in all its branches. With these advances, the need for more accurate diagnostic tools, particularly imaging, has become mandatory.
From basic intra-oral periapical x-rays, sophisticated imaging methods such as computed tomography, cone beam computed tomography and magnetic resonance Imaging System has also found a place in modern dentistry.
Moving from analogue to digital radiography has not only streamlined and speeded up the process, but also enabled image storage, manipulation (brightness/contrast, image cropping and recovery)
In general, intraoral and extraoral, analogue and digital, ionising and non-ionizing Dental Imaging, and two-dimensional (2-D) and three-dimensional (3-D) imaging can be classified as imaging techniques used in dentistry. For most dental radiographic requirements, 2D traditional radiographs provide excellent images.
There may be indirect, direct, or semi-direct digital radiographic images. Using a solid-state sensor like CCD or complementary metal-oxide-semiconductor CMOS)-based chips, direct digital images are obtained. A phosphor plate device obtains semi-direct images.
Contrast resolution is an important parameter for the diagnostic accuracy of caries detection. Via applying complex filter to detect carious lesions, software enables image manipulation. The high resolution of intraoral radiography allows the visualisation of the bony supporting tissues for periodontal diagnosis, including tiny information such as periodontal ligament space, lamina dura, and trabecularization of the bony.
Dental Imaging System makes it possible to assess the degree of bone loss using image analysis methods. High resolution technology and/or dedicated endodontic filtering increases the visibility of small file tips as small as 0.06 mm. Multiplanar sections (axial, coronal, and sagittal planes) are helpful in assessing cysts or benign tumours to find deeper tissues. It is also effective in the post-surgical follow-up of high recurrence lesions