Internal resorption may be seen on the radiograph as 1. Interproximal bone loss 2. Small radiolucent enlargement of the pulp chamber 3. Radiopacity in pulp chamber 4. Small area around the root apex
RadiologyAnswer: 2
Greatest decrease in overall radiation risk from dental X-ray to patients is achieved by 1) Using speed "E" film 2) Rectangular collimation 3) Using a lead apron 4) Increasing target-film distance
RadiologyAnswer: 2
Most radioresistant cells are 1) Lymphocytes 2) Granulocytes 3) Muscle cells 4) Connective tissue cells
RadiologyAnswer: 3
Submentovertex is useful in viewing 1) Body of mandible 2) Fractures of zygomatic arch 3) Fractures of base of skull 4) All of the above
RadiologyAnswer: 4
The cells which are least susceptible to radiation are 1. Fibroblasts 2. Lymphocytes 3. Osteoblasts 4. Erythroblasts
RadiologyAnswer: 4
Loss of lamina dura and ground glass appearance indicates 1) Paget"s disease 2) Fibrous dysplasia 3) Caffey"s disease 4) Osteomalacia
RadiologyAnswer: 2
In radiography "latent image period" is the period between 1) Subsequent doses of radiation 2) Exposure of film and development of image 3) Exposure to X-rays and development of radiographic image 4) None of the above
RadiologyAnswer: 3
Selection of kilovoltage for dental films depends on 1) Target-firm distance 2) Film-object distance 3) Density of tissues radiographed 4) All of the above
