TOPIC: BITEWING RADIOGRAPHY 🌟IMPORTANT POINTS TO REMEMBER 🔹Position of bite: The tab or bite platform should be positioned in the middle of the film packet and parallel to the upper and lower edges of the film packet. 🔹Position of film packet: The film packet should be positioned with its long axis horizontally for horizontal bitewing […]
PARALLEL LINE ANGLE TECHNIQUE 🌟 IMPORTANT POINTS TO REMEMBER 🔹Parallel line angle technique is also called Fitzgerald technique, long cone technique and extended cone technique. 🔹The central ray of the X-ray beam should be perpendicular to the film and the long axis of the tooth. The film should be placed in the mouth parallel to […]
TOPIC: BISECTING LINE ANGLE TECHNIQUE 🌟 IMPORTANT POINTS TO REMEMBER 🔹Bisecting line angle technique is also called short cone technique. 🔹Cieszynski rule: This rule states that two triangles are equal when they share one common side and have two equal angles. The central ray of the X-ray beam and the imaginary bisector result in formation […]
INTRAORAL RADIOGRAPHY: GENERAL CONSIDERATIONS 🌟 IMPORTANT POINTS TO REMEMBER 🔹Types of intraoral radiography: Periapical Radiography, Bitewing Radiography, Occlusal Radiography 🔹Head position: The chair should be raised high enough so that the occlusal surfaces of the maxillary arch can be visible while taking maxillary views. 🔹Occlusal plane: This should be parallel to the floor. 🔹Sagittal plane: It […]
TOPIC: RADIATION HAZARDS 🌟IMPORTANT POINTS TO REMEMBER 🔹Biological effects: Can be somatic (stochastic effect, deterministic effect) or genetic. The effect can be also acute or immediate effect and chronic or long-term effect. 🔹Immediate effects of radiation are dermatitis, brittleness of the fingernail, epilation and leukopenia. 🔹Chronic or long-term effect: Repeated low levels of radiation exposure […]
TOPIC: RADIATION PROTECTION 🌟 IMPORTANT POINTS TO REMEMBER 🔹Natural radiation: It yields an average annual dose of about 0.79 mSv. It has three components: cosmic radiation, terrestrial radiation and internal sources. 🔹Cosmic radiation: It includes both energetic subatomic particles and photons of extraterrestrial origin that reach the earth. 🔹Terrestrial radiation: The dose equivalent rate varies with […]
TOPIC: BASICS OF RADIOLOGY 🌟IMPORTANT POINTS TO REMEMBER 🔹Dental X-ray machine consists of an envelope, tube head, positioning arm, control panel, circuit and supporting stand. It can be of wall-mounted fixed type or mobile. 🔹Tube head consists of glass X-ray tube, tube housing, transformer, lead shield, surrounding oil, tube head seal, filtration, collimator, spacer cone […]
TOPIC: PHYSICS OF RADIATION 🌟 IMPORTANT POINTS TO REMEMBER 🔹John Dalton in 1808 developed his famous ‘Theory of Atom’.🔹Elemental matter: It is made up of a combination of a single type of atom, e.g. hydrogen atom.🔹Compound matter: It is composed of recurring units of a specific number of atoms in a definite arrangement and at […]
🌟 PERIODONTICS-PSYCHIATRY RELATIONSHIP 📌 POINTS TO PONDER 🔹Psychosomatic disorder in the oral cavity may be caused by either the development of habits that injure the periodontium, or the direct effect of the autonomic nervous system. 🔹Psychosocial factors can modify the periodontal status through behavioural changes regarding oral hygiene, smoking, dietary intake, bruxism and drug use. 🔹Four […]
🌟 PERIODONTICS-ORAL SURGERY RELATIONSHIP 📌 POINTS TO PONDER 🔹Teeth should be extracted in an atraumatic manner to conserve alveolar bone. 🔹 Clinicians should avoid applying pressure at the crest of the socket to compress the rim of the alveolar bone as it results in the collapse of the remaining buccal plate of the bone and […]