TOPIC: COMPUTED TOMOGRAPHY 🌟 IMPORTANT POINTS TO REMEMBER 🔹Tomography: The word tomography is derived from the Greek word ‘tomos’ meaning ‘a technique of X-ray photography by which a single plane is photographed with the outline of structures in other plane eliminated’. 🔹History: Allen McLeod Cormack proposed the theoretical idea of CT in 1950s and the […]
TOPIC: ORTHOPANTOMOGRAPHY 🌟 IMPORTANT POINTS TO REMEMBER 🔹Panoramic radiographic technique is also known as pantomography and rotational panoramic radiography. 🔹Indication: To evaluate overall health of maxillofacial structures, know exact location of third molar if it is horizontally impacted and cannot be seen on periapical radiography, and evaluate developmental anomalies. 🔹Advantages: It provides broad anatomical coverage […]
 TOPIC: SKULL RADIOGRAPHY 🌟 IMPORTANT POINTS TO REMEMBER 🔹The cranium encloses and protects the brain and is made up of eight bones, two of which, the parietal and temporal, are paired. 🔹The technical requirements for extraoral imaging include a detector, a grid and equipment capable of a long source-to-film distance. 🔹Caudal difference: It is […]
TOPIC: LATERAL OBLIQUE VIEW 🌟IMPORTANT POINTS TO REMEMBER 🔹 The lateral oblique view is one of the most enterprising and satisfactory techniques of having an extraoral view of the jaw. 🔹Size of the cassette used for the lateral oblique view is 5 × 7 in. 🔹The central rays of the beam are directed at –15° […]
TOPIC: UNDIAGNOSTIC RADIOGRAPHY 🌟IMPORTANT POINTS TO REMEMBER 🔹Lighter radiographs: Radiographs exposed for less than optimum time or with less than optimum kVp or exposed for optimum timing and kVp but underdeveloped, all will result in lighter radiographs or low-density radiographs. 🔹Prevention can be done by developing such films for a relatively longer time
TOPIC: QUALITY CONTROL IN DENTAL RADIOGRAPHY 🌟 IMPORTANT POINTS TO REMEMBER 🔹Quality control: It is the specific measure for ensuring and verifying the quality of the radiograph taken. 🔹Quality assurance: The arrangement to ensure that the quality control procedures are effective, leading to relevant changes and improvement.
TOPIC: PRINCIPLE OF RADIOGRAPHIC INTERPRETATION 🌟IMPORTANT POINTS TO REMEMBER 🔹Radiographic interpretation is based on the visualisation and analysis of opacities on a radiograph. 🔹The difference between those X-rays absorbed by the body part and those that penetrate it is known as differential absorption. 🔹The greater the tissue absorption, the fewer X-ray photons reach the film, […]
 TOPIC: SPECIALIZED INTRAORAL TECHNIQUES 🌟 IMPORTANT POINTS TO REMEMBER 🔹Mandibular third molar radiography: It can be done by surgical needle holder technique, two-radiograph technique, using film holder and modified X-ray cone position technique. 🔹Gagging is also called retching which refers to the strong involuntary effort to vomit. It can be caused by psychogenic stimuli and tactile […]
TOPIC: NORMAL RADIOGRAPHIC ANATOMY 🌟 IMPORTANT POINTS TO REMEMBER 🔹Enamel: It is the most radiopaque normal structure in human body which consists of 92% of minerals. 🔹Dentine: It is less radiopaque as compared to enamel, which contains 65% of mineral content. The line of demarcation between enamel and dentine is sharp and well-demarcated. In bicuspid […]
TOPIC: UNITS OF MEASUREMENT AND DOSIMETRY 🌟IMPORTANT POINTS TO REMEMBER 🔹Fundamental units: Fundamental units are units which are independent of each other and have their own standard (base). 🔹Derived units: Derived units are units which are not having their own standard (base) and are obtained from fundamental units. 🔹SI unit: In 1960, the new system […]
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