Dentosphere : World of Dentistry

PHYSIOLOGY - UNIT 1 BLOOD 2017 1.  Describe briefly the kinetics and life span of leucocytes. Compare and contrast the functions of neutrophils and eosinophils. 2+3=5 2.  Describe the sequence of reactions to mismatched blood transfusion. 5 3.  Explain the genesis of granulocytes and their regulation using flow chart. 5 4.  Explain the anticoagulant mechanisms of endothelium of blood vessel. 5 5.  Describe the role of platelets in hemostasis. 5 2016 1.  Enlist the functions of plasma proteins. Explain any one of them. 2.5+2.5=5 2.  What is cross matching in blood transfusion? Explain its significance. 3+2=5 3.  Define hemostasis and describe about any 3 anti-clotting mechanisms in the body 2+3=5 4.  Explain the different stages of erythropoiesis with a diagram. 5 5.  Differentiate between intrinsic and extrinsic pathways of blood coagulation. 5 2015 1.  What is Rh factor? Explain the consequence of Rh...

The American Society for Testing and Materials (specification D 907) defines adhesion as “the state in which two surfaces are held together by interfacial forces which may consist of valence forces or interlocking forces or both.” (ref. 2) In dentistry, bonding of resin-based materials to tooth structure is a result of four possible mechanisms, as follows: (ref. 3) Mechanical Adsorption Diffusion Combination of above three For good adhesion, close contact must exist between the adhesive and the substrate (enamel or dentin). The surface tension of the adhesive must be lower than the surface energy of the substrate. ENAMEL Acid-etching transforms the smooth enamel into an irregular surface and increases its surface free energy. When a fluid resin-based material is applied to the irregular etched surface, the resin penetrates into the surface, aided by capillary action. Monomers in the material polymerize, and the material becomes interlocked with the enamel surface...

# All of the following are radiolucent except: A. Ameloblastoma B. Cementoblastoma C. Keratocyst D. Central giant cell granuloma # All of the following will appear like caries in an X ray EXCEPT: A. Acrylic resin B. Calcium hydroxide C. ZOE D. Composite

B.P. Koirala Institute of Health Sciences Dharan, Nepal 4th year BDS Internal Assessment, February 2018 Subject: Public Health Dentistry Date: 14th February, 2018 Time : 1 Hour 20 minutes Total marks: 60 SECTION 'A' SHORT ANSWER QUESTIONS Maximum Marks  - 30 1. Enlist and explain the principles of primary health care.     (1+4=5) 2. Diffferentiate between case control and co-hort studies.   (5) 3. Describe the expression repeat restoration cycle.   (5)  4. Define Dental Public Health. Briefly explain the characteristics of public health work. (1+4=5) 5. Explain various methods by which you can prevent transmission of infections between patient and health care personnel.    (5) 6. Explain Salivary reductase caries activity test.   (5) SECTION 'B'  MODIFIED ESSAY QUESTION Maximum Marks - 30 I. In a recent epidemiological study, it was observed that among 50 individuals with oral cance...

Cimetidine increases the plasma half life of circulating lidocaine. So this combination is relatively contraindicated in CHF patients. Esters such as procaine and tetracaine may inhibit the bacteriostatic action of sulfonamides. The administration of adrenaline in patients being treated with non-selective beta blockers (such as propranolol, tinolol, atenolol, increases the likelihood of serious elevation of the blood pressure. Tricyclic antidepressants (eg: Imipramine) and monoamine oxidase inhibitors (eg: Isocarbaxazid) potentially increase the cardiovascular actions of exogenously administered vasopressors.

Dentosphere : World of Dentistry announces VIDEO COMPETITION on the occasion of its second anniversary  and reaching the 3000 subscribers mark in its YouTube Channel. We are grateful to all our Subscribers and are pleased to announce a video competition. RULES: 1. The deadline for submission is 25th March 2018. All the videos will be uploaded by 31st March 2018. The video getting highest  number of views until 31st May will be announced as winner on 1st June 2018. NOTE: The earlier you submit, the more chance of your video getting more views before the deadline. 2. Length of the video can be anywhere between 3-15 minutes. (at least 3 minutes) 3. Appropriate references and credits should be placed by the creators themselves for academic information. 4. The videos may be slightly edited before uploading. 5. The video must be your original work. Any videos copied from online media will be detected and automatically disqualified. Some ideas for video topics may be: ...

# Egg shaped pontic is indicated for the replacement of: A. Mandibular posteriors B. Mandibular anteriors C. Maxillary posteriors D. Maxillary anteriors # A pontic as compared to a missing posterior tooth should be: A. same dimensions as that of natural teeth B. same dimensions mesiodistally but less faciolingually C. same dimensions faciolingually but less mesiodistally D. larger than natural tooth, to exert same forces on mastication # Which of the following will primarily determine the faciolingual dimension of the occlusal portion of a hygienic pontic? A. The length of the pontic B. The masticatory force of the patient C. The position of the opposing contact areas D. The width and crestal position of the edentulous ridge