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KROK 2 Dentistry 2009 Questions | KROKEXAM
Browse 2009 KROK 2 Dentistry exam questions with answers and explanations.
Exam questions
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A boy is 1 month old. At the medial edge of the inferior eyelid on the right there is a wound with purulent discharge. The boy fell ill suddenly, body temperature rose up to 40°C. The general condition is grave. On the second day of disease there appeared an infiltration at the internal edge of eye socket and right cheek. The skin above it is hyperemic, fluctuation cannot be determined. Palpebral fissure is narrowed. The right nasal meatus discharges pus. There is an infiltration on the vestibular surface of alveolar process and on the right palate. Mucous membrane above it is hyperemic along the mucogingival fold, fluctuation can be determined. What is the most likely diagnosis?
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A 20-year-old patient got an injury. Objectively: the patient's chin and lower jaw up to the 34 and 45 teeth are missing. The 45, 46, 47, 48, 34, 35, 36, 37 teeth are stable. At what stage of medical evacuation the patient will get special medical aid?
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A 45-year-old patient complains about a rapidly growing formation on his lower lip. Examination of the red border of lips revealed a greyish-red nodule with a hollow in the centre which is filled with corneous masses that can be easily removed. The nodule is painless, mobile. What is your provisional diagnosis?
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A 60-year-old patient underwents sanitation of the oral cavity before an operation on account of cataract. After examination the patient was diagnosed with chronic median caries of the 22 tooth (Black's class V). What filling material should NOT be used in this patient?
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A 23-year-old patient complains about periodical pain in the region of the 11 tooth, protrusion of the alveolar process. The patient got a trauma 4 years ago. Objectively: crown of the 11 tooth is dark, percussion is painless. X-ray picture shows roundish well-defined area of bone tissue rarefication by the root apex of the 11 tooth. The area is 2,0 cm in diameter. Puncture results: yellow fluid with cholesterol crystals. What is the most likely diagnosis?
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A 45-year-old female patient consulted a prosthodontist about dental prosthetics. She works as TV announcer. Objectively: the lower jaw dentition is without spaces, the upper jaw has a free-end edentulous space and a boundary edentulous space in the lateral parts. The remaining 18, 17, 13, 12, 11, 21, 22, 23, 24 teeth are stable. What fixing elements should be used in a clasp denture for cosmetic purposes?
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A 34-year-old patient consulted a prosthodontist about pain and clicking in the final stage of mouth opening. The patient has a history of a dislocation. Amplitude of maximal mouth opening is 58 mm. Mouth opening should be limited down to the following amplitude:
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A 12-year-old patient presents with abnormal position of the upper jaw canine. The 13 tooth is in the vestibular position, above the occlusal plane. Space between the 14 and the 12 tooth is 6,5 mm. Choose a rational treatment method:
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Unused stomatological instruments were left on a sterile table at the end of the working day. What measures should be taken in order to provide sterility of these instruments?
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A 42-year-old patient complains about gingival pain, progressing gingival hemorrhage, increasing tooth mobility, halitosis. Objectively: gums are evidently hyperaemic, extremely edematic, they bleed easily on palpation. Tooth roots are exposed, parodontal pouches are 4-6 mm deep, and contain purulent exudate, there is also supragingival and subgingival dental calculus. II-III grade tooth mobility is present. Orthopantomogram shows resorption of interdental septa down to 1/2 of their height. What is the most likely diagnosis?
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A 60-year-old patient complains about difficult mastication due to the mandible displacement that resulted from an untreated fracture. Objectively: the 35, 36, 38, 45, 46 teeth are missing. The remaining teeth are intact. The 43, 44, 47, 48 teeth have no contact with the upper lateral teeth, and exhibit oral deviation up to 1 cm. What is the optimal prosthetic construction for the manible?
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A patient complains about a cosmetic defect of the 23 tooth. Objectively: the crown of the 23 tooth is decayed by 80%, the root is stable, the canal is filled up to the top. After examination it was decided to restore the decayed tooth with a cast stump inlay. The root canal of the 23 tooth should be broadened by:
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A 46-year-old patient complains about pain in the left parotid-masticatory region, disorder of mandi- ble movements. Objectively: skin over the left temporomandibular joint (TMJ) is reddened, the surrounding tissues are edematic. Disfunction of the left temporomandibular joint is present. What is the most likely diagnosis?
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A patient complains about limited mouth opening. She has a history of intra-articular disorders in the left temporomandibular joint. Roentgenological examination revealed subchondral sclerosis of articular plates, regular narrowing of articular cavity, limited excursion of condylar process of the left temporomandibular joint. What is the most likely diagnosis?
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A 46-year-old patient complains of difficult opening of her mouth, body temperature rise, tissue edema around both temporomandibular joints (TMJ). It is known from the anamnesis that the patient had short-term non-intense bilateral pain in the parotid-masticatory region, limited mouth opening, tension and discomfort in the region of both temporomandibular joints that had been observed for a couple of days. What is the most likely diagnosis?
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A boy is 10 years old. His face is symmetric and proportional. He presents with mouth breath. Examination of the oral cavity revealed saddle-like form of dental arches and high arched palate. Upper first molar relationship (Angle's key to occlusion) remains intact. What is the most likely diagnosis?
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A 56-year-old patient complains about a painless neoplasm on the alveolar crest of the right upper jaw. Objectively: there is a bright-red wide-based tumour in the region of premolars. It is localized on both sides from the alveolar crest. The tumour is dense and elastic, painless. What is the most likely diagnosis?
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A 37-year-old patient was admitted to the oral surgery department. The woman complains of pain in her cheek that is made worse by touch. It is known from the anamnesis that five days ago the patient fell down from the stairs and "hurt"her cheek. Objectively: in the depth of cheek examination revealed a circumscribed infiltration, cheek skin is hyperaemic and doesn't make a fold, fluctuation symptom is present. Mucous membrane is edematic and has teeth indentations. What is the most likely diagnosis?
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A 40-year-old patient suffers from chronic generalized periodontitis. Objectively: both dentitions are intact, the 42, 41, 31, 32 teeth exhibit I degree mobility. What splint would be aesthetically acceptable for this group of teeth?
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Renovation of a dental room involves installation of luminous tube lamps. Specify the required illuminance level in lux:
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A patient complains about a cosmetic defect. Examination revealed that the 21 tooth was missing, the crowns of the 11 and the 22 tooth are intact, high, relatively parallel. The patient refused teeth preparation as well as implantation or fabrication of a removable denture. What orthopedic construction should be fabricated?
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A 47-year-old patient consulted a doctor about an itching tumour in the right buccal area that has significantly enlarged lately. Examination revealed an irregularly shaped tumour up to 1,5 cm large, the tumour is black and glossy. What is your provisional diagnosis?
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A 38-year-old patient consulted an orthopedist about metal taste, dry mouth and tongue burning. Objectively: defects of the lower dental arch were replaced with soldered stainless steel bridges. What examination method would be the most appropriate in this case?
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A 5-year-old child complains about spontaneous pain in an upper jaw tooth on the right that is getting worse at night and during eating cold food. Objectively: the 65 tooth has a deep cavity communicating with the tooth cavity. Probing is painful, percussion is painless. Cold water causes long-standing pain. What is your provisional diagnosis?
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A 28-year-old patient complains about a cosmetic defect in the frontal part of his upper jaw. Objectively: the crown part of the 11 tooth is decayed below the gum level. The root is stable, percussion is painless. It is planned to restore the tooth with a stump inlay and cover it with a metal-ceramic crown. What additional method of diagnostics should be applied in this clinical situation?
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Parents of a 6-year-old child complain about pain in the child's submandibular region on the left, body temperature rise up to 37,5°C. Objectively: the child's face is asymmetric due to the infiltration of the submandibular region on the left. The infiltration is soft and elastic, mobile, 2x2,5 cm large; its palpation is slightly painful, the skin is unchanged. The teeth are intact. Pharynx is hyperaemic. What is the most likely diagnosis?
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A patient complains about paroxysmal upper jaw toothache on the left that is getting worse at night. Toothache intensifies also under stimulation and irradiates to the left eye and temple. Similar attacks were noted three months ago, the patient didn't undergo any treatment. Objectively: the 25 tooth has a deep carious cavity communicating with the tooth cavity. Probing causes acute pain at the point of communication, vertical percussion is slightly painful, horizontal one is painless. Mucous membrane in the projection of root apex of the 25 tooth is unchanged, its palpation is painless. Thermal probe causes acute pain, the pain attack is long- lasting. Electroodontodiagnosis is 60 microampere. X-ray picture shows slight widening of periodontal fissure at the root apex of the 25 tooth. What is the most probable diagnosis?
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A 23-year-old patient complains about gingival hemorrhage during tooth brushing, intensive formation of dental plaque despite thorough dental care. Objectively: gingival papillae are slightly edematic, congestively hyperemic, bleed when touched. Hygiene index according to Fedorov and Volodkina is 3,5. What toothpaste would you recommend this patient as a part of complex therapy?
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Regimental Aid Station (RAS) admitted a soldier with an injury in the maxillofacial region. Dosimetric control revealed radiation affection in this patient. The injured should be referred to the following functional unit of RAS:
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A pregnant 24-year-old woman complains about emergence of several new carious cavities, falling out of old fillings. Objective examination revealed: index of decayed, missing and filled teeth (DMF) = 16, Feodorov-Volodkina hygiene index is 3,3. Choose the optimal material for carious cavity filling in this case:
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A group of specialists conducts an epidemiological survey of certain age groups of population aimed at evaluation of periodontal disease prevalence and treatment needs. These rates are studied by means of the following index:
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After the unproblematic extraction of the 37 tooth a 60-year-old patient presents with profuse hemorrhage from the tooth socket. The patient has a 6-year history of essential hypertension. Now his AP is 180/110 mm Hg. What emergency aid should be rendered?
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A 48-year-old patient complains about permanent pain in the region of the 38 tooth. She has been suffering from this for 3 days. Crown of the 28 tooth is completely decayed. What forceps should be applied for extraction of roots of the 28 tooth?
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During military operations the head of the Army Medical Department gave the order to deploy a stomatological aid unit on the territory of the Army Hospital Base. A patient with missile wound of face was admitted to the unit. What kind of aid can be rendered in the stomatological unit?
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A 62-year-old patient has a median fracture of mandible along with formation of a false joint. Objectively: dental formula is 33, 34, 35, 36, 27, 47, 46, 45, 44, 43. The teeth are intact, stable, with high crowns. Fragment mobility is insignificant, there is no displacement. X-ray picture shows a bone defect 0,8 cm large. What prosthesis is indicated?
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A 68-year-old patient complains about pain in the palate that occurs during wearing a complete removable denture the patient got 3 months ago. Objectively: palatine torus is strongly marked, mucous membrane around it is hyperaemic and edematic. What is the most probable cause of this complication?
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A 27-year-old patient complains of a swelling in the region of her lower jaw on the right. Objectively: the patient's face is slightly asymmetric due to thickening of mandibular body on the right. Adjacent soft tissues are of unchanged colour and normal consistency. Mouth opening is not limited. Mucous membrane of oral cavity presents no changes. In the right lower dentition the 45 tooth is missing. X-ray picture of the right half of the mandible in its lateral view shows an oval well-defined 2x3 cm large radiolucency in the bone tissue. The coronal portion of the retinated horizontally positioned 45 tooth is turned inward the radiolucent area. What is the most probable diagnosis?
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A 52-year-old patient complains about a nonhealing ulcer on his lower lip. The patient is smoker. He hasn't ever consulted a doctor about it. In the region of red border of the lower lip a roundish ulcer is present. It is up to 2,0 cm in diameter. The ulcer edges are thickened and a little bit raised in form of a whitish swelling. In the left submandibular region palpation revealed enlarged, painless, dense lymph nodes with limited mobility. What is the most likely diagnosis?
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A 25-year-old patient complains about acute pain in the mouth, headache, articular pain, body temperature rise up to 38,6°C. Red border of lips is covered with haemorrhagic crusts, mucous membrane of the oral cavity has big erosions and ulcers coated with greyish incrustation. Hand skin exhibits erythematous spots 11,5 cm in diameter with a vesicle in the middle. What is the most likely diagnosis?
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A 14-year-old child complains about acute spontaneous spasmodic pain in an upper jaw tooth on the right. The pain has been lasting for 3 days, it is throbbing, irradiating to the temple, getting worse at night. Objectively: surface of the 15 tooth exhibits a carious cavity within parapulpar dentine. Dentine is softened, of greyish colour. Probing of the whole cavity floor is painful, percussion of the 15 tooth is painless. What is the most likely diagnosis?
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