Dentosphere : World of Dentistry

Gemination: An attempt at division of a single tooth before calcification, resulting in incomplete formation of two teeth. The resultant structure will have two completely or incompletely separated crowns with a single root and root canal. It is difficult to differentiate between gemination and a case in which there has been fusion between a normal tooth and a supernumerary tooth. Twinning: The division of a single tooth resulting in one normal and one supernumerary tooth. The number of teeth will be more than normal. Concrescence: A form of fusion of cementum after completion of root formation The teeth are united by cementum only. Maxillary molars are frequently involved Fusion:  Union of two normally separated tooth germs. If the union occurs before calcification, the two teeth are completely united to form a single Large tooth. If the union occurs after calcification, there is union of roots only. The tooth may have separate or fused ...

The Correct answers are highlighted in GREEN. # Burkitt's lymphoma is associated with the proliferation of: (AP -99) a) T- cell b) B - cell c) Lymph vessels d) Lymph nodes # Incidence of most common malignant tumors in men in India is in: a) Lungs b) Oral cavity c) Prostate d) Liver

The correct answers are highlighted in green . # The classic opportunistic infection in acquired immune deficiency syndrome is: (KAR-2000) a) Aphthous stomatitis b) Pneumocystis carinii pneumonia c) Herpetic gingivostomatitis d) Tuberculosis # In which of the following immunization is given after infection is started: (AP-2004) a) Influenza b) Poliomyelitis c) Herpes d) Rabies

The correct answers are highlighted in green. # HIV is transmitted by all of the following routes except: (AP-14, MAN-2002) a) Saliva b) Needle prick injury c) Blood transmission d) Sexual intercourse # A rise in the anti-HBc immunoglobulin in a patient indicates: (MAN-2000) a) Acute infection b) Carrier state c) Prodromal phase d) Convalescence

The correct answers are highlighted in green. # Enzyme deficient in diabetes mellitus is: (TNPSC-99) a) Glucokinase b) Hexokinase c) Phosphorylase d) Pyrophosphate dehydrogenase # Which of the following neoplasms is primary in the adrenal medulla? (APPSC-99) a) Pheochromocytoma b) Eosinophilic adenoma c) Arrhenoblastoma d) None of the above

The correct answers are highlighted in green. # In thrombocytopenic purpura there is: (AIPG-93, 98) a) Increase in platelet count b) Decrease in platelet count c) Normal platelet count d) Defective platelet function # Bleeding time is prolonged in: (AIPG-98) a) Factor VIII deficiency b) Christmas factor deficiency c) Von Willebrand disease d) Vitamin K deficiency # Which of the following coagulation factors is deficient in classical haemophilia? (AIPG-94) a) VIII b) IX c) X d) XII

The correct answers are highlighted in green. # Detoxification of drugs is controlled by: a) Cytochrome b) Cytochrome P450 c) Cytochrome C d) Cytochrome A # In cytochrome P450, P stands for: a) Structural proteins b) Substrate protein c) Pigment d) Polymer # Detoxification or protective synthesis occurs by: a) Oxidation b) Reduction c) Conjugation d) Any of the above # The major driving force for formation of membrane lipid bilayer is: a) Hydrogen bonding b) Hydrophobic interactions c) Vander waal forces d) Not known