Description : The organisms which can grow both in presence and absence of oxygen a. Aerobes b. Anaerobes c. Faculative anaerobes d. Strict aerobes
Last Answer : Ans: A
Description : Which kind of organisms will grow everywhere in a thioglycollate broth? a. Aerobes b. Microaerophiles c. Anaerobes d. Facultative anaerobes
Last Answer : d. Facultative anaerobes
Description : Which kind of organisms will grow best in a candle jar? a. Aerobes b. Microaerophiles c. Anaerobes d. A-C are correct
Last Answer : b. Microaerophiles
Description : Metronidazole is selectively active against anaerobic organisms because: A. Aerobes have an active transport mechanism to pump it out of their cell B. Only anaerobes reduce it to generate the reactive ... inactivated in the presence of oxygen D. It binds to DNA of anaerobes with high affinity
Last Answer : B. Only anaerobes reduce it to generate the reactive nitro radical
Description : How long would it take to notice significant reduction in radiolucency after finishing a root filling in a tooth with a periapical lesion: A. 6 months B. 1 month C. 3 months
Last Answer : A. 6 months
Description : X rays are used in endodontic treatment to: A. Aid in the diagnosis of periapical hard tissue lesion B. Determine the number, location, shape, size and direction of roots and root canals C. Confirm ... root canals D. Evaluate the adequacy of the complete root canal filling E. All of the above
Last Answer : E. All of the above
Description : The concomitant perio-periapical lesion as the cause of endodontic failure: A. Cannot be discovered prior to endo treatment B. May be discovered prior to endo treatment C. Is most commonly found in maxillary teeth D. Is most commonly found in mandibular teeth E. None of the above
Last Answer : B. May be discovered prior to endo treatment
Description : Swelling after RCT is mainly caused by (Being asked as: What is the most frequent cause of pain which occurs several days after obturation?, too): A. Entrapped Bacteria, or the presence of bacteria in the periapical region. B. Underfilling the root canal system C. Overfilled root canal
Last Answer : A. Entrapped Bacteria, or the presence of bacteria in the periapical region.
Description : The treatment of the following patient should include: a. Initial empiric therapy directed against both aerobes and anaerobes b. The addition of anti-fungal therapy in an elderly patient ... therapy is appropriate if the agents selected possess activity against both aerobic and anaerobic bacteria
Last Answer : Answer: a, e The primary treatment for a perforated viscus is surgical, however antimicrobial therapy is an extremely important adjunct. Empiric antibiotic therapy for secondary ... whereas longer periods are indicated for immunosuppressed patients and with patients with extensive contamination
Description : The biological process in which both aerobes and anaerobes degrade organic matter is - (1) Manuring (2) Composting (3) Digesting (4) Nitrifying
Last Answer : (2) Composting Explanation: Composting is the depomposition of plant remains and other once-living materials to make an earthy, dark, crumbly substance that is excellent for enriching soil. It is the chief way to recycle wastes.
Description : The biological process in which both aerobes and anaerobes degrade organic matter is (1) Manuring (2) Composting (3) Digesting (4) Nitrifying
Last Answer : Composting
Description : The best method to take X-ray of the maxillary sinus is, A. Periapical radiograph B. Panoramic view C. Lateral cephaloghraph D. Occipitomental view E. Reverse Towne’s view
Last Answer : D. Occipitomental view
Description : In regard to periapical lesions, what is TRUE: A. Are predominantly anaerobic B. Must be treated by antibiotics C. Must always treated by surgery
Last Answer : A. Are predominantly anaerobic
Description : An endodontic therapy was completed on a tooth with a periapical radiolucency. Marked reduction in size of radiolucency is expected in approximately: A. One year B. 6 months C. 3 months
Last Answer : A. One year
Description : What indicates for a periapical surgery: A. Where performing an endodontic treatment on existing root canal filling may lead to fracture of the root B. When root canal treatment is faulty C. When ... bony defect is so extensive that the edges of the incisors will collapse E. None of the above
Last Answer : A. Where performing an endodontic treatment on existing root canal filling may lead to fracture of the root
Description : A periapical x ray of 11 and 12 region shows the vimen, floor of the nasal fossa and the median palatine suture. The other feature that can be seen is: A. Maxillary sinus B. Incisive foramen C. Zygomatic process D. Wall of maxillary sinus
Last Answer : B. Incisive foramen
Description : The lamina dura is absent in which condition: A. Von Recklinghausen B. Paget’s C. Periapical granuloma
Last Answer : B. Paget’s
Description : After completing pulp extirpation, debridement and placing a dressing; apical periodontitis is because: A. Over instrumentation extending into periapical area B. Irritation from chemicals used C. Entrapped bacteria D. One or any combination of the above
Last Answer : D. One or any combination of the above
Description : Which of the following is true in regard to periapical cementoma: A. Teeth are vital. B. Teeth are not vital
Last Answer : A. Teeth are vital.
Description : Periapical abscess is differentiated from periodontal abscess by: A. Pulpal radiology B. History and vitality test C. X-ray and history
Last Answer : B. History and vitality test
Description : .Which radiographic method would you use in assessing periodontal conditions and lesions: A. Bitewing B. Periapical C. Occlusal D. Panoramic
Last Answer : B. Periapical
Description : Where is the MOST probable place of bone resorption after a deciduous molar has a pulpal gangrene: A. Interradicular septum B. The periapical area
Last Answer : A. Interradicular septum
Description : The prognosis of teeth with apical resorption is : A. Poor B. Good if apex can be sealed C. Dependant upon periapical surgery D. Contingent upon systemic antibiotic therapy combined with treatment of the canal
Last Answer : B. Good if apex can be sealed
Description : How would you diagnose a periapical abscess: A. Pain on percussion B. Pain when eating hot food C. Pain when eating cold food D. The thickness of periodontal ligament on X-Ray
Last Answer : A. Pain on percussion
Description : The lamina dura is seen on periapical radiographs as:CHECK A. Usual radiolucency between tooth root and surrounding bone as a thin white line. B. Cribriform plate of bone making the ... bone consistent with a healthy periodontal status D. Pattern of radiopaque lines in supporting alveolar bone
Last Answer : B. Cribriform plate of bone making the tooth socket
Description : A 45 years-old patient awoke with swollen face, puffiness around the eyes, and oedema of the upper lip with redness and dryness. When he went to bed he had no swelling, pain or ... B. Angioneurotic oedema C. Infectious mononucleosis D. Acute maxillary sinusitis E. Acute apical periodontitis
Last Answer : B. Angioneurotic oedema
Description : A 9 years-old boy has a small white discolouration on his maxillary central incisor. The lesion is most probably, A. Hypocalcification due to trauma of the primary predecessor B ... the histo differentiation stage of development D. Defect during the morho differentiation stage of development
Last Answer : A. Hypocalcification due to trauma of the primary predecessor
Description : Which of the following is an expansile lesion of the oral mucosa, A. Keratocyte more expansion B. Radicular cyst C. Cementoma
Last Answer : B. Radicular cyst
Description : A patient shows a lesion on the tongue adjacent to sharp tooth. You “round off” the sharp area and recall patient after one month to see the lesion turning smaller in size. What would be your next step: A. Keep observing B. Perform an excision biopsy C. Prescribe Kenalog and Orabase
Last Answer : A. Keep observing
Description : A patient complains of finger-like growth on the lateral aspect of the tongue. The lesion is painless and of normal colour. The MOST PROBABLE diagnosis is: A. Folate papillae B. Filiform papillae C. Neurofibroma D. Papilloma
Last Answer : D. Papilloma
Description : In syphilis: A. Primary lesion is not contagious B. Oral lesions are not seen in less than 1% C. Spirochetes disseminate in 24 hours
Last Answer : C. Spirochetes disseminate in 24 hours
Description : An incision biopsy of an ulcerated and intruded clinically suspicious lesion in a 50 years-old female reveals chronic inflammation; you would:** A. Inform the patient and her physician of ... . Dismiss the patient with instructions for warm saline rinses and re-examination D. Repeat the biopsy
Last Answer : D. Repeat the biopsy
Description : Kaposi’s sarcoma: A. Seen on buccal mucosa in HIV as purple lesion B. Seen on palate of most HIV patients C. Should be biopsy
Last Answer : B. Seen on palate of most HIV patients
Description : A patient is complaining of an open sore on the buccal mucosa. The lesion is painless, ulcerated, has indurated margins, 1.5 cm in diameter, covered by greyish-white exudate, enlarged lymph nodes and tender, negative tuberculin test and positive serology. The diagnosis is
Last Answer : Chancre /Primary lesion of syphilis
Description : In radiographs, an incipient carious lesion limited to the end of the proximal surface of a posterior tooth appears as: A. Radiopaque area B. Triangle with apex towards the tooth surface C. Larger in radiographs than actual lesion D. All of the above E. None of the above
Last Answer : B. Triangle with apex towards the tooth surface
Description : Which of the following conditions is not classified as a white lesion: A. Fordyce’s granules B. Smoker’s keratosis C. Leukoplakia D. Lichen planus
Last Answer : A. Fordyce’s granules
Description : Keratotic lesion surrounded by cold web like lines /Wickham’s Striae/ appears as lace-like network on the buccal mucosa; you diagnosis is** A. Lichen Planus B. Keratosis follicularis C. White sponge nevus
Last Answer : A. Lichen Planus
Description : .What is the most common malignant lesion that occurs in the oral cavity: A. Ameloblastoma B. Squamous cell carcinoma C. Osteosarcom
Last Answer : B. Squamous cell carcinoma
Description : Treatment of either salivary or multiple Giant Cell lesion is, A. Marsupialization B. In velation and packing ap?? C. Cold well?? D. Surgical curettage E. None of the above
Last Answer : D. Surgical curettage
Description : Treatment of fibrous dysplasia consists of, A. Resection B. Complete excision if it affects small area; if it is large lesion, limited excision surgery because of the cosmetic considerations. C. Irradiation D. Excision and removal of adjacent teeth E. None of the above
Last Answer : B. Complete excision if it affects small area; if it is large lesion, limited excision surgery because of the cosmetic considerations.
Description : A 10 years-old boy presents with small greyish white lesion surrounded by a red halos on the soft palate and tonsillar pillars, small vesicles are found. He has fever and pain in the ear. The MOST probable diagnosis is?********** M07 A. Herpangina
Last Answer : A. Herpangina
Description : Which of the following lesions CANNOT BE classified as an intra-epithelial lesion?** A. Herpes simplex infections B. Pemphigus vulgaris C. Herpangina D. Lichen planus E. Hand, foot and mouth disease
Last Answer : D. Lichen planus
Description : Which of the following would be ONE possible indication for indirect pulp capping?*** A. Where any further excavation of dentine would result in pulp exposure. B. Removal of caries has exposed the pulp C. When carious lesion has just penetrated DEJ
Last Answer : A. Where any further excavation of dentine would result in pulp exposure.
Description : Bacteria that make either a fementative or respiratory set of enzymes are known as (a) Obligate anacerobes (b) Obligate aerobes (c) Microacerophiles (d) Facultative organisms
Last Answer : Ans: D
Description : Following are the two statements regarding the origin of life. (A) The earliest organisms that appeared on the earth were non-green and presumably anaerobes. (B) The first autotrophic organisms were the chemoautotrophs that ... ) is correct but (B) is false. (d) (B) is correct but (A) is false.
Last Answer : (a) Both (A) and (B) are correct.
Description : (4) Water drops in a dispersion medium of air Explanation: A colloid is a substance microscopically dispersed evenly throughout another substance. A colloidal system consists of two separate phases: a dispersed ... or gas. Cloud is a colloidal dispersion of Water drops in a dispersion medium of air.
Last Answer : Conduction band electrons have more mobility than holes because they – (1) are lighter (2) experience collision less frequently (3) have negative charge (4) need less energy to move them
Description : (2) Fat is dispersed in water Explanation: A colloid is a substance microscopically dispersed evenly throughout another substance. A colloidal system consists of two separate phases: a dispersed ... Milk is an emulsified colloid of liquid butterfat globules dispersed within a water-based solution.
Last Answer : The presence of ozone in the stratosphere is responsible for – (1) increasing the average global temperature in recent years (2) higher rate of photosynthesis (3) checking the penetration of ultra-violet rays to the earth (4) supplying oxygen for people travelling in jets
Description : At birth, the oral cavity usually contains: A. S. mutans only B. No micro organism C. S. mutans and S. salivavis D. Lactobacilli and S. mutans
Last Answer : B. No micro organism
Description : What is an important requisite for fillers in dental composite restorative resins in load bearing areas: A. Sub micro sized particles B. High coefficient of thermal expansion C. High in content (High filler)
Last Answer : C. High in content (High filler)