1. Calculus attaches to tooth surfaces by all of the following EXCEPT hemidesmosomes. close adaption to cementum. organic pellicle. mechanical locking to tooth/root irregularities. 2. PMNs are present in which stage of gingivitis: Stage IV Stage III Stage II Stage I 3. which of the following plaque indices doesnot use a disclosing agent all of the above debris component of simplified oral hygiene index modified quigley hein plaque index plaque component of periodontal disease index 4. Which of the following cells produce anti- bodies? Macrophages Plasma cells T-lymphocytes Neutrophils 5. Infrabony defects occur most frequently in cancellous bone. bundle bone. cortical bone. interseptal bone. 6. “Odland bodies” are Found within the uppermost cells of stratum spinosum All of the above Modified lysosomes Contain acid phosphatise 7. A previously well-controlled periodontal patient now demonstrates the presence of bleeding in 60% of sites and significantly increased probing depths. The patient has most likely developed osteoporosis. diabetes mellitus. hyperchromatosis. hypercalcemia. 8. Which of the following is the main mineral source for subgingival calculus Gingival fluid which resemble serum Gingival fluid which resembles plasma Saliva None of the above 9. Antibacterial substance in saliva which prevents the attachment of A. viscosus to enamel surface: Lysozyme Lactoferrin Peroxidase Myeloperoxidase 10. Vitamin C deficiency results in all of the following, EXCEPT Hyperreactivity of contractile elements of blood vessels Retardation or cessation of osteoid formation Defective formation and maintenance of collagen Impaired osteoblastic function 11. Keratins that are characteristic of highly proliferative epithelia K 14 K 5 K 6 K 10 12. Major fimbrial structural component of P.gingivalis is Fim C Fim A KgP Kgr 13. Most potent virulence factor of P.ginigivalis is Gingipains Collagenase Hemagglutinase Lipopolysaccharides 14. A periodontometer is a device used to measure Gingival bleeding Tooth mobility Debris and materia alba Gingival bone count 15. In chronic periodontal disease, the most common bone defect seen is: Reverse architecture Ledges Furcation involvemen Osseous Craters 16. Maximum force during probing around implants: 2.5 N .25 N 1 N .75 N 17. Square knot is composed of Two double loops thrown in opposite direction Two single loops thrown in same direction Two double loops thrown in same direction Two single loops thrown in opposite direction 18. Superficial zone in ANUG: Fibrin and platelet deposition Necrotic epithelium and plasma cells Inflammatory cells and PMNs Bacterial contamination 19. what is the thickness of cemento-dentinal junction 3-4um 2-3um 4-5um 1-2um 20. Which hormone increases the gingival vascular permeability and increases chances of gingival disease caused by infective micro-organisms Estrogen Oxytocin Progestoerone Human chorionic gonadotropin Loading … Question 1 of 20
