1. Modes of attachment of calculus to the tooth surface include all of the following, EXCEPT Penetration of calculus bacteria into cementum Close adaptation to unaltered cementum Attachment by means of an inorganic pellicle Mechanical locking into surface irregularities 2. Antibacterial substance in saliva which prevents the attachment of A. viscosus to enamel surface: Lysozyme Myeloperoxidase Peroxidase Lactoferrin 3. which of the following is not the function of sulcular fluid it helps in removing harmful materials fom the sulcus it provides plasma proteins that help in adhesion of junctional epithelium of the tooth it helps in plaque formation by providing glycoproteins which are an important component of dental pellicle it carries antibodies to help in defense mechanism of gingiva 4. To reinforce the thinned bony trabeculae by occlusal forces,bone formed is ledge buttressing bone formation reinforcing bone formation condensing 5. What will be the radiographic feature of chronic gingivitis Normal bone pattern Wedge shaped bone loss Vertical bone loss horizontal bone loss 6. Vertical food Impaction can be due to all except Periodontal destruction Plunger cusp Open contacts between adjacent tooth Difference between adjacent tooth marginal ridges and at irregular level 7. maintainance of adequate oral hygiene by a patient will not be complicated by the presence of open contacts interdental calculus deposits fixed bridges orthodontic bands and brackets 8. A periodontal screening and recording (PSR) score of 3 for a sextant indicates that probing depth does NOT exceed 5.5mm. 3.0mm. 3.5mm. 4.0mm. 9. Which of the following structures is not present in periodontal ligament ? Angioblast and undifferentiated cell Myelinated nerve fibres Fibronectin Mature elastic fibres 10. Patient with plantar hyperkeratosis, periodontitis and dural calcification: what is the diagnosis: Hypophosphatasia Papillon lefevre syndrome Chediak higashi disease Lazy leukocyte syndrome 11. Junctional epithelium attaches to tooth surface by Hemidesmosomes and external elastic lamina Hemidesmosomes and internal basal lamina Desmosomes and internal elastic lamina Desmosomes and external basal lamina 12. which of the following crystal forms occur in greater amounts in supraginigval calculus octacalcium phosphate and brushite brushite and magnesium whitlockite hydroxyapatite and magnesium whitlockite hydroxyapatite and octacalcium phosphate 13. The specific plaque hypothesis was delineated by: Walter Loeshe Robert Koch Sigmund Socransky Schroeder HE 14. What is the primary source of elevated collagenolytic activity in chronic periodontitis? Neutrophils. Macrophages. P. intermedia P. gingivalis. 15. Initial sign of phenytoin induced gingival enlargement: Increased sulcus depth on probing Bleeding from gingiva on probing Interdental enlargement of papilla Pale and fibrotic gingiva 16. Bacterial enzyme which causes inactivation of allergy mediating immunoglobulin Protease Hyaluronidase Peroxidase Catalase 17. the community periodontal index for treatent needs is recorded for quadrants whole dentition sextants one arch 18. I-brush is used in case of Post periodontal surgery For regular cleaning of teeth Gingival recession Peri-implantitis 19. Ultrastructural and biochemical studies have shown that paque microorganisms produce substances which separate them from one another and form a matrix for further plaque accumulation.This matrix is made up of dextrans(glucans)and Levans Mucoproteins Lipoproteins Disaccharides 20. blood supply of the buccal marginal gingiva is through the branches of internal carotid artery subperiosteal vessels supraperiosteal vessels transalveolar vessels Loading … Question 1 of 20
