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 […]
TOPIC: INFECTION CONTROL IN DENTAL RADIOLOGY 🌟 IMPORTANT POINTS TO REMEMBER 🔸Infections of concern in dental radiography are infective hepatitis, HIV and AIDS, and herpes simplex infection. 🔸Personal protection should be carried out by covering of wound, protective clothing, gloves, mask and eyewear and hand-washing. 🔸Critical surface: This is a surface that penetrates the tissue and […]
TOPIC: BASICS OF X-RAY 🌟 IMPORTANT POINTS TO REMEMBER 🔹Hard rays: X-rays having shorter wavelengths have great penetrating power and are called hard rays. 🔹Soft rays: X-rays having longer wavelengths possess less energy and less penetrating power. These are called Grenz rays. 🔹Thermionic emission: It can be defined as the phenomenon of emission of electrons […]
TOPIC: X-RAY FILMS, INTENSIFYING SCREEN AND CASSETTE 🌟 IMPORTANT POINTS TO REMEMBER 🔹Direct action or non-screen film: It is also called wrapped or packet film which is sensitive primarily to X-ray photons. 🔹Indirect action or screen film: It is used in combination with an intensifying screen in a cassette. 🔹Periapical films: Films are available […]
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