Dentosphere : World of Dentistry

# What percentage of mandibular first molars have two distal canals? A. 10 % B. 30 % C. 60 % D. 75 % # Two canals are most often seen in the: A. Maxillary canine B. Mandibular canine C. Maxillary lateral incisors D. Mandibular first premolar

# All of the following are contraindications for root planing except: A. deficient or overhanging margins of amalgam restorations B. erosion and/or abrasion C. recession D. root caries # While sharpening curettes and sickles, the internal angle of ________ must be preserved between the face and lateral surface. A. 50-60 B. 60-70 C. 70-80 D. 80-90

Though we all are aware of the fact that prevention is better and cheaper than cure and it is prudent to take preventive measures in health care rather than curing once we are afflicted by the disease, we seldom apply that in our practice. It is good to see that people are oriented more towards preventive measures and have started to get regular health check up and dental check ups these days. Even the children are getting more care than they used to get in the past, may be because of awareness, availability of health care facilities, or rise in the economic standard of the households. People may not have idea about how they should take care of their child's teeth even if they are willing to. This short article attempts to address the concerns of such parents. 1. When should the first dental visit be? This is a common question people are unsure about. When should they take their children to the dentist ? The first dental visit should be at around the time of eruption of first ...

# Which of the following are most sensitive to X ray? A. Tooth buds and salivary glands B. Nerve and muscle tissue C. Hair and nails D. Cartilage # The most radiosensitive cells in the body are: A. Endothelial cells B. Epithelial cells C. Red blood cells D. White blood cells

# A thin bluish line around the gingival margin is due to the absorption of: A. Silver B. Mercury C. Drugs like Tetracycline D. Lead # McCall's festoons are: A. also called Stillman's clefts B. due to poor oral hygiene C. Congenital abnormality D. Due to trauma from occlusion

Administration of fluid by any root other than the alimentary canal (per oral) i.e. intravenous, intramuscular, subcutaneous or into bone marrow is called Parenteral Fluid Therapy. Intravenous route is by far the most common method for parenteral fluid therapy. Mostly, the median cubital vein in the cubital fossa is used for venepuncture. Important Solutions commonly used: # 5% Dextrose 

# The predominant cell type in gingival crevicular fluid is the: A. Mast cell B. Plasma cell C. Macrophage D. Polymorphonuclear leukocyte # Gingival crevicular fluid is measured using: A. Whatman's filter paper B. pH paper C. Mylar strip D. Litmus paper