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KROK 2 Dentistry 2011 Questions | KROKEXAM
Browse 2011 KROK 2 Dentistry exam questions with answers and explanations.
Exam questions
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A 53-year-old patient complains of missing of mandibular teeth. He has a hi- story of microstomy. Objectively: the 31, 32, 35, 36, 37, 38, 41, 42, 45, 46, 47 and 48 teeth are missing. The remaining teeth are stable, immobile. What kind of denture construction is recommended for this patient?
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During the examinations and everyday orthopedic manipulations a dentist uses a dental mirror. How to sterilize dental mirrors?
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A 35-year-old woman was admi-tetd to the oral surgery department two hours after a road accident. Objectively: cutaneous integuments are pale, there are beads of sweat on her face. Respiration is heavy and obstructed. Pulse rate is 120 bmp, AP is 70/60 mm Hg. There is wound penetrating to the oral cavity on the left cheek. During transportation the woman was in supine position with her head thrown backwards. What kind of asphyxia is likely to develop in this patient?
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A 10-year-old girl complains of an aesthetic defect. She has a history of sucking her right thumb till the age of 7. Objectively: the height of the lower third of face is somewhat reduced. There is a 9 mm gap in sagittal direction between the upper and lower incisors, Engle's class 2. As a result of Eschler-Bittner test the girl's face appears at first better, then worse. What clinical form of occlusal anomaly is most likely?
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A 36-year-old patient requires a full coverage swaged metal crown for the 37 tooth. The patient presented to a clinic for the crown adjustment. During the adjustment it was revealed that the crown was to loose to fit the tooth cervix properly. How to eliminate this defect?
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A 31-year-old patient complains of experiencing recurrent pain in the 48 tooth for 4 years. Objectively: right submandibular lymph nodes are enlarged, painless. Mucous membrane around the partialy erupted 48 tooth is hyperemic. On probing the subgingival pocket of the 48 tooth exudes pus mixed with blood. What additional study will be most informative for diagnosing this pathology?
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A 44-year-old patient consulted a surgeon about constant acute pain in the upper jaw region on the left that is getting worse during teeth joining. The pain was noted 3 days ago. Objectively: the face is symmetrical, mouth opening is unlimited. The crown fof the 26 tooth is half-destroyed. Probing of the carious cavity is painless. Percussion of the 26 tooth provokes acute pain. Mucous membrane of the alveolar process is edematic, hyperemic on the level of the 26 tooth. The 26 tooth was treated before. What is your provisional diagnosis?
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A 38-year-old patient complains of acute paroxysmal pain in the region of his left upper jaw, left eye and temple. The pain is lasting (2-3 hours), gets worse at night. Objectively: the 26 tooth has a deep carious cavity, floor probing causes painful response, thermal stimuli provoke long-lasting pain, percussion provokes minor pain. What is the most likely diagnosis?
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A 46-year-old patient has been diagnosed with chronic concrementous pulpitis of the 27 tooth. X-ray picture shows that the concrement is located in the crown part of the tooth cavity and occupies 1/4 of its volume. Select an adequate method of treatment:
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The child is 13 years old. The disease began suddenly with a body temperature rise up to 39°C, swelling of the upper jaw on the left. Objectively: the face is asymmetric due to the left cheek edema. The skin over the swollen area is hyperemic and tense. The 26 tooth exhibits a large carious cavity, percussion of the tooth causes pain reaction. The 25, 26, teeth are mobile. Mucogingival junction in the region of the 24, 25, 26, 27 tooth is indistinct, alveolar mucosa is hyperemic and bilaterally swollen in the region of the 25, 26. 27 teeth. What is the most likely diagnosis?
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A 5-year-old child presents with chronic deep caries within the contact and masticatory surfaces of the 75, 74, 84, 85 teeth. Which filling material should be used?
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A patient complains of general weakness, pain in the gums, halitosis. Objectively: the patient is pale, adynamic, body temperature is 38,5°C, submandibular lymph nodes are enlarged, painful on palpation. Interdental gingival papillae are inflamed, their tops are "detruncated", covered with gray-yellow necrotic incrustation. Radiography of alveolar process and blood count reveal no apparent changes. What is the most likely diagnosis?
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Two years after radiation therapy a 49-year-old patient has been diagnosed with recurrence of the lower lip carcinoma. Objectively: there is a 1x2 cm large neoplasm with an ulcer in the centre in the region of the right half of the lower lip. Palpation of the right submandibular region reveals two enlarged, dense, painless lymph nodes of round shape. Specify the stage of the disease:
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A 38-year-old patient ordered a clasp upper jaw prosthesis. Its fabrication involves forming of a fireproof model. What material should be applied for duplication?
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A 20-year-old patient complains about unaesthetic look of the 24 tooth from the moment of its eruption. Objectively: enamel of the 24 tooth is partly absent, the dentine is yellow. The 64 tooth was treated more than once when she was a child, but because of frequent exacerbations, edemas and gingival fistula the 64 tooth was extracted when she was 9 years old. What is the most likely diagnosis?
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A 45-year-old patient complains of burning tongue, a metallic taste in mouth. Three months ago she got a dental bridge made of gold and supported by the 16, 14 teeth. Oral cavity exasmination reveals no objective changes. The 36,37, 46 teeth are sealed with amalgam fillings. What is the most likely cause of this condition?
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A 25-year-old patient complains of gingival hemorrhage and enlargement. Objectively: hypertrophy of gingival papillae by 1/3 of the crown height in the frontal region of mandible. Periodontal pockets are absent. What is the most likely diagnosis?
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A chemical plant worker consulted a dentist about an oral mucosa burn caused by caustic soda. Which of the following medications should be chosen for emergency care?
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A patient undergoes orthopaedic treatment of bounded edentulous spaces on both jaws by means of fullcast combined dental bridges. The patient has a history of essential hypertension. Which haemostatic drug SHOULD NOT be used for the gums retraction?
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Parents of a 1,5-month-old child complain of whitish depositions on the child's buccal and labial mucosa. Objectively: labial and buccal mucosa is hyperemic and covered with caseous deposition that can be easily removed. Specify the causative agent of this disease:
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A 7-year-old boy complains of fever up to 38°C, headache, sore throat. Objectively: slightly hyperemic soft palate mucosa, anterior palatine arches and tonsils exhibit erosions. Submandibular lymph nodes are slightly enlarged, painless. What is the causative agent of this disease?
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A 68-year-old patient had a stroke, after which she now often experiences urges to vomit causing unilateral TMJ dislocations. The dislocations could only be reduced under anesthesia. The 21-28, 15, 16,17,18, 36, 37, 44, 46, 47 teeth are missing. What denture construction is optimal for this patient for the treatment period?
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Parents of a 12-year-old child complain about white patches on the upper front teeth, which appeared six months ago. Objectively: chalk-like patches on the vestibular surfaces in the precervical area of the 13, 12, 11, 21, 22, 23 teeth. Their enamel is dull, pliable and rough on probing. There is a history of short-term pain caused by chemical stimuli. What is your provisional diagnosis?
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A 3-year-old girl has been diagnosed with acute odontogenous periostitis of mandible starting from the 74 tooth. It is required to perform periostomy and extract the 74 tooth. The child is excited. Choose the best type of anesthesia for the surgery:
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A 48-year-old patient complains of pain in the 32, 38 teeth which arose 3 months after installing a dental bridge upon them. Objectively: the gums around the abutment teeth are hyperemic, edematous, mobile in the vestibular-oral direction. What is the most likely cause of this complication?
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An 11-year-old child complains of a carious cavity in the left upper molar, which appeared six months ago. Objectively: the medial contact surface of the 26 tooth exhibits a carious cavity located within the mantle dentin. The cavity floor and walls are dense, pigmented, with no pain upon probing. The response to thermal stimuli is absent. Percussion of the tooth causes no pain. Make a provisional diagnosis:
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A 42-year-old patient was diagnosed with exacerbation of generalized grade II periodontitis accompanied by abscess formation. What method of general treatment should be administered in the first place?
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A 43-year-old patient complains of increased tooth sensitivity to thermal and chemical stimuli, gum itch. Objectively: the roots of the teeth are exposed to 1/3 of their length, the gums are dense, pale pink. Thre is a small amount of dental plaque. In the region of the 15, 14, 24, 25, 44, 34 teeth there are wedgeshaped defects within the dentin. Probing of exposed cervices and wedge-shaped defects causes pain reaction. What is the most likely diagnosis?
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A 32-year-old patient complains about mouth soreness, body temperature rise up to 38,5°C, indisposition. Such condition has been occurring periodically for several years after the patient had had a cold. Objectively: lips are covered with haemorrhagic crusts, hyperaemic mucous membrane of lips and cheeks has erosions covered with fibrinous films. Hypersalivation is present. What is the most likely diagnosis?
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Examination of a 5-year-old child revealed a cariuos cavity communicating with the tooth cavity on the approxi-mal surface of the 54 tooth. Halitosis is present. Superficial probing of the cavity is painless, deeper probing causes pain reaction. Percussion is painless. Interviewing revealed that hot food caused pain. Select the medication for antiseptic treatment of root canals:
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A 14-year-old teen complains of gingival hemorrhages during tooth brushing. Objectively: gingival mucosa is hyperemic, pastous, bleeds when touched. Schiller-Pisarev test is positive. PMA index - 70%. Hygienic index - 3,0. X-ray picture of the frontal area depicts no evident changes. What is the most likely diagnosis?
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A 50-year-old patient needs a splint for the lower front teeth. Objectively: the 33, 32, 31, 41, 42, 43 teeth present I-II class mobility and are devitalized. Which splint would be the most appropriate in this case?
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A 34-year-old male patient complains about acute spasmodic pain in the region of his upper jaw on the left that is getting worse as affected by cold stimuli. Toothache irradiates to the ear and temple. He had acute toothache of the 37 tooth one year ago, but he didn't consult a dentist. Pain recurred three days ago. Objectively: the 37 tooth has a carious cavity communicating with the dental cavity. Probing of the opened carious cavity is extremely painful. X-ray picture shows widening of periodontal fissure at the root apex of the 37 tooth. What is the most likely diagnosis?
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A 30-year-old patient complains of a painless tumour-like formation in the region of the left mandibular alveolar process. Objectively: there is a pale pink 1x1,5 cm large tumour-like formation on the vestibular surface of the alveolar process at the 34 and 35 teeth. The formation has a broad base, it does not bleed. Crowns of the 34, 35 teeth are intact, the teeth are non-mobile. X-ray picture of the alveolar process shows no changes in bone structure. What is the most likely diagnosis?
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A 57-year-old patient complains of mobility of all mandibular teeth. Objectively: the 34,35,36,45,46,47 teeth are missing. Orthopantomogram of the remaining teeth shows resorption of the alveolar process within 1/3 of interdental septa height. What construction should be offered to the patient?
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A 48-year-old patient consulted a dental surgeon about extraction of the 37 tooth's roots. What tool should be chosen?
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A 35-year-old patient was diagnosed with chronic median caries of the 36 tooth. There is a Black's class II cavity affecting masticatory surface. What material should be chosen for the tooth filling?
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After the extraction of the 26 tooth a 43-year-old patient presents with a communication between the oral cavity and the maxillary sinus. X-ray picture shows no changes in the maxillary sinuses. What tactics should be chosen by a dental surgeon to prevent maxillary sinusitis?
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A 25-year-old patient complains of intermittent pain during taking sweet and cold food in the 21 tooth. Objectively: there is a hard tissue defect within the enamel in the cervical region of the 21 tooth. The enamel edges are uneven and chalky. Probing the cavity bottom provokes no pain, there is short-term pain reaction to cold stimuli. What is the most likely diagnosis?
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External examination of a 9-year-old boy revealed strongly expressed nasolabial and labio-mental folds, a shortening of the lower third of face. Examination of the oral cavity revealed late transitional dentition, the upper front teeth completely overbite the lower teeth, the palate exhibits imprints of the lower incisors. What is the most likely diagnosis?
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