Tips to revise Oral Radiology for NEET MDS with MERITERS GRP

Oral Radiology is considered to be the heart of dentistry. Many students consider Oral Radiology to be a major roadblock towards their success in the NEET MDS exam, owing to its extensive syllabus. In such a scenario, it becomes pertinent for students to make use of selective learning. To do that, students need to identify the important topics of the subject by thoroughly analyzing and interpreting previous year NEET MDs exam papers.

Our experts have explained in detail the important topics to revise in a systematic approach. Watch the video above explaing the approach.

Following are the list of important topics under part 1& 2;

Oral Radiolgy - Part 1

Radiation Physics
  • Introduction to EM waves.
  • Ionization
  • Ionizing and non-ionizing radiations
  • Electromagnetic spectrum
  • X rays introduction (Important scientists and discoveries, Types of x rays, Physical properties of X rays)
  • Production of  X rays
  • Interaction of  X rays with matter (Coherent scattering,
  • Photoelectric absorption and Compton scattering).
  • Basic components of x ray machine and their functions(Cathode, Anode, X ray tube etc.)
  • Collimation (types of collimators and their functions) and PID
  • Factors affecting quality and quantity of X ray
  • Density (Characteristic curve)
  • Contrast (Factors affecting contrast, Short scale and long scale contrast)
  • Relationship between contrast and density
  • Factors affecting sharpness of film
  • Filters
Biological Effects Of Radiation
  • Classification of Biological effects of radiation 
  • Radio sensitivity and  Radio resistance
  • Radiation induced cancer
  • Radiotherapy
  • Osteoradionecrosis
Radiation Safety And Protection
  • Dosimetry (Dosimeter placement, Film badge, ring dosimeter, Ionizing chambers’ advantage and disadvantage, Thermo-luminescence dosimeter)
  • Radiation safety protocols(Image based questions can be expected).
  • ALARA Principle (Safe doses for Radiation workers and general public)
X-ray Film, Intensifying Screen And Processing Of X-ray Films
  • Types of film (Bite wing films, IOPA films, Occlusal films).
  • Film speed and factors determining film sensitivity(Size of silver halide, thickness of emulsion and presence of radiosensitive dyes).
  • X ray film composition(Base, Reflecting layer).
  • Intensifying screens (Components, Base, Phosphor layer, Types of phosphor in dental screens, Effects of intensifying screen).
  • Collimation and other effects
  • Grid (Functions, Types of grids)
  • X ray film processing 
  • Developer solution (Developing agent, Reducing agents, preservative, Restrainer)
  • Fixing Solution (Clearing agent, Acidifier, Reducer etc.)
  • Rapid processing chemicals
  • Safe lighting in dark room
  • Common problems in film exposure and developments (Light radiographs, Dark radiographs, Film fog, Dark spots or lines, Light spots, Yellow or brown stains, Blurring , Partial images etc.)
  • Artifacts 

Oral Radiolgy - Part 2

Projection Geometry And Intraoral Radiography
  • Principles of imaging
  • Paralleling technique(Advantages of long cone technique)
  • Bisecting angle technique 
Extraoral Radiographs
  • Water's view 
  • Submentovertex view 
  • Arthrography, arthroscopy and arthroplasty 
  • TMJ view 
  • Salivary gland imaging(Conventional sialography, Pathologic changes in sialography)
  • CT
  • MRI
  • USG
Radiograhic Diagnosis
  • Radiographic findings and associated pathology

Oral Radiology - Image based and case-based questions

The images are provided in order to check your understanding. These questions might seem tricky and may even demand a detailed analysis. Yet these will turn out to be extremely beneficial. The tighter your grip over such image-based, visually answered questions, the higher are the chances of your success. 

Oral Radiology - Full syllabus test

This test renders you the opportunity to revise the whole syllabus thoroughly, in order to make sure that you revise all the previous tests thoroughly with their solutions. This test gives you good amount of repeats from previous 3 tests (Just like you get good amount of repeats in your NEET and AIIMS exams too).

Wish you all the best in your preparation!

Dr Shivam Bharadwaj,

Updated Sep 16, 2020.