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KROK 2 Dentistry 2012 Questions | KROKEXAM
Browse 2012 KROK 2 Dentistry exam questions with answers and explanations.
Exam questions
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A 55-year-old patient consulted a dentist about a roundish tumour-like formation of about 1 cm in diameter located within the vermilion border of his lower lip. Objectively: the tumourlike formation protrudes about 5 mm above the vermilion border, it is dense and grayish-red. The surface of the formation is covered with thin scales that can hardly be removed. What is the most likely diagnosis?
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A 50-year-old patient has a defect of the lower dental arch. It is planned to make an implant-supported bridge for its restoration. X-ray picture shows that the height of the bone mass from projection of mandibular canal up to the top of alveolar crest is 2 cm. What type of implant should be applied?
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External examination of a 7-year-old child revealed: thickening of nose bridge, semi-open mouth, dry lips. Mouth corners are peeling. Anamnesis data: the child sleeps with open mouth. Examination of oral cavity revealed no changes. What dispensary group will this child fall into?
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A 10-year-old child undergoes sanitation of the oral cavity. The girl was found to have chalky spots on the vestibular surfaces in the precervical region of the 21 and 12 teeth. Enamel surface is dull, smooth. Pain reaction to the temperature stimuli is absent. What additional method of examination is expected to confirm the diagnosis?
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Objective examination of a 10-year-old child revealed that the whole lower lip was slightly hyperemic, infiltrated, dry, covered with small scales. Architectonics of lips is changed. The child complains of dryness and a feeling of tense lips, especially in autumn and winter. The child had a bad habit of lip sucking. What is the most likely diagnosis?
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A patient has got a traumatic fracture of mandible in the area of the missing 34, 35 teeth with a slight displacement and a defect of alveolar part in the area of the 34, 35 teeth. Other teeth on both lower and upper jaws are intact. What splint would be optimal in this case?
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A 30-year-old patient needs to have his 26 tooth extracted because of exacerbation of chronic periodontitis. Objectively: the crown of the 26 tooth is decayed by 1/3. What forceps can be used for this tooth extraction?
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A 25-year-old male patient has bilateral fracture of the lower jaw. A fragment in the region of the 44,43,42,41, 31,32,33, 34 teeth is displaced downward and backward. What appliance should be used for the fragment reposition?
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A 49-year-old patient consulted a dental surgeon about the oral cavity sanation. He has an indication for the extraction of the 16 tooth. History: the tooth hasn't been treated before, decayed within the last 4 years. Objectively: the 16 tooth's crown is destroyed by over 2/3, the mucosa exhibits no pathological changes. Which tool is required for the tooth extraction?
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A 9-year-old child complains of pain caused by sweet and sour food in an upper tooth on the left. Objectively: the 26 tooth has a carious cavity on the masticatory surface within the enamel limits. What is the optimal material to fill the 26 tooth?
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A patient complains about spontaneous pain in the area of his 15 tooth he has been feeling for 2 days. Thermal stimuli make the pain worse, its attacks last up to 30 minutes. Objectively: there is a deep carious cavity in the 15 tooth consisting of light softened dentin, floor probing is painful in one point, reaction to the thermal stimuli is positive, percussion is painless. Make a diagnosis:
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A 6-year-old child presents with weakness, pain in throat when swallowing, body temperature rise up to 38,0°C. Examination of the oral cavity revealed massive hyperaemia of the mucous membrane of the soft palate, palatine arches, tonsils, uvula; there were also single vesicles and erosions extremely painful when touched. Regional lymph nodes are enlarged, painful on palpation. What is the most likely diagnosis?
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A 35-year-old patient complains of progressing throbbing pain in the 26 tooth. Objectively: the 26 tooth has a carious cavity filled with softened dentine, tooth cavity is closed, probing of the cavity floor is painless, percussion causes acute pain. There is I grade tooth mobility. Roentgenological changes are absent. What is the most likely diagnosis?
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A patient complains of burning, itch and lower lip enlargement. He has been suffering from this for a long time. Objectively: the patient's face is asymmetric due to the flattening of nasolabial fold. His lower lip is edematic, of normal colour, painless on palpation. The patient has plicated tongue. What is your provisional diagnosis?
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A 50-year-old woman complains about a neoplasm on her lower lip on the side of oral cavity that appeared a month ago and has been slowly growing since that. Objectively: there is a roundish, elastic, painless neoplasm inside the lower lip. Mucous membrane hasn't changed its colour. Make a diagnosis:
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A 35-year-old patient complains of a neoplasm on the tip of the tongue which he hurts with his teeth. The neoplasm sometimes increases, and sometimes decreases in size. Objectively: on the tip of tongue there is a roundish neoplasm 0,5 cm in diameter with distinct borders and broad base. The neoplasm is the same colour as the mucosa of tongue. What is the most likely diagnosis?
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A 35-year-old female patient consulted a dentist about a painless, slowly growing neoplasm in the region of the 11 and 12 teeth. Examination revealed that the tumour was light-pink, flat, adjacent to the teeth, had a pedicle. The tumour was up to 1,5 cm large, with smooth surface and dense consistency. It was diagnosed as an epulis in the region of the 11 and 12 teeth. What form of epulis are these clinical findings typical for?
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As a result of a car accident a 45-year-old patient got an injury of his upper jaw. Examination revealed elongated and flattened face, profuse nasal hemorrhage, liquorrhea from the nose and ears. These clinical presentations are typical for the following fracture of upper jaw:
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A 7-year-old child has protruding chin, the lower lip overlaps the upper one. There are diastemas and tremas between the lower incisors, the lower incisors overlap the upper incisors by 2/3 of the crown height. First permanent molars demonstrate Angle's class III relation. Sagittal gap is 3 mm. The correct doctor's tactics will be to:
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A 5-year-old child was found to have missing upper molars. Lower incisors are in contact with the mucous membrane of palate. Specify the doctor's tactics:
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A child is 7 years old. He has early transitional dentition. There is overcrowding of the lower front teeth: the 42 and 32 teeth erupted orally with a complete lack of space. Make a plan of treatment:
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A 14-year-old girl complains of indistinct pronunciation that showed up at the age of 14 after the acute respiratory viral disease. Examination revealed normal face and normal teeth alignment, occlusal disharmony was not found. Palpation didn't reveal cleft palate. Uvula doesn't move during pronunciation of sounds, its palpation does not cause gag reflex. What is the reason for indistinct pronunciation of sounds?
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A 35-year-old patient complains of a swelling in the sublingual region which impairs speech and causes discomfort during eating. The swelling turned up about a week ago. Objectively: there is a roundish bulge up to 3 cm in diameter in the right sublingual region. Mucous membrane over it is not hyperaemic, there is fluctuation symptom in the center. Which disease do these symptoms correspond with?
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During orthopaedic treatment a 47-year-old patient was given anaesthesia (with Ultracain DS forte). 20 minutes after the injection the patient presented with hyperaemia of skin, headache, dizziness, increased heart rate. The patient had previously undergone dental treatment with the use of this anaesthetic. What complication developed in this patient?
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A 35-year-old patient seeks prosthetic dentistry. Objectively: 18, 14, 13, 12, 11, 21, 22, 23, 24, 28. The crowns confining the defect are high and stable. To restore the integrity of the dentition it is planned to fabricate a one-piece clasp denture. What kind of mechanical fixator should be used?
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A 42-year-old woman prsented to a prosthetic dentistry clinic seeking dental prosthetics. Objectively: dental formula is 18.... 13 12 11 21 22 23.... 28 48 47 46 45 44 43 42 41 31 32 33 34 35 36 37 ' The bite is deep, clinical crowns are low, survey line is not marked. The patient suffers from epileptiform attacks. What prosthesis is indicated?
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A 22-year-old patient presented to a prosthetic dentistry clinic because of missing of the 21 tooth, the 11 and 22 teeth are intact. The 21 tooth was extracted 2 months ago. What construction is most suitable in this case?
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A 48-year-old patient has undergone unilateral resection of the upper jaw. He needs a resection prosthesis. Objectively: the 21, 22, 23, 24, 25, 26 teeth are stable, hard palate is broad, flat. What connection of clasps with the base will reduce the instability of the resection prosthesis?
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At a dentist's appointment a 12-year-old child inhaled a cotton turunda: he developed noisy respiration with a whistling sound, sudden dyspnea, pallor along with pronounced cyanosis, sweating. What kind of urgent condition developed in this patient?
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A 39-year-old patient complains of experiencing pain in the region of the 21 tooth for 2 days. It is known from the history that the indicated tooth had been treated before for caries. Objectively: the 21 tooth is covered with metal-ceramic crown, mucous membrane in apex projection is edematic and hyperaemic. Percussion of the tooth is extremely pai- nful. X-ray picture shows improperly filled root canal. It is planned to remove the 21 tooth crown. What kind of anaesthesia should be given?
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An 8-year-old child has a deep carious cavity communicating with tooth cavity on the distal-approximal masticatory surface of the 75 tooth. Probing causes pain. Percussion is painless. Cold water causes slowly abating pain. The tooth decayed several months ago and wasn't treated. What treatment method would be efficient in this case?
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An 8-year-old child complains about pain in the 21 tooth that is getting worse during biting down. A month ago a part of tooth crown broke off as a result of a fall. The child didn't consult a dentist. Objectively: in the region of medial angle of the 21 tooth there is a crown defect that makes up 1/3 of the crown's height. Tooth cavity is open, probing and thermal stimulus cause no pain. Percussion is acutely painful. Gum around the 21 tooth is edematic and hyperaemic. What is the provisional diagnosis?
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A 12-year-old patient complains about an aesthetic defect. Objectively: the lower third of face is shortened, upper frontal teeth overbite the lower teeth by 3/3 of height, exhibit oral inclination, lateral parts all along exhibit cusp-to-cusp relationship between the antagonists; Angle's class II malocclusion (joining of the upper permanent molars) is also present. Malocclusion is observed in the following planes:
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A 52-year-old female patient complains of dry mouth, taste impairment, burning and pricking sensations in the tongue that disappear during eating but intensify at the end of the day. For the first time such problems arose 2 years ago after a psychic trauma. She has a history of anacid gastritis. Objectively: the general condition is satisfactory, the patient is restless, tearful. Oral mucosa is pale pink, dry; filiform papillae on the dorsum of tongue are reduced. Pharyngeal reflex is dramatically reduced. There is segmetal disturbance of facial skin sensation. What is the most likely diagnosis?
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A 40-year-old patient complains about difficult mastication as a result of lower jaw displacement. He has a history of mental fracture 2 months ago. Objectively: the 35,36,38 ... 45,46 teeth are missing. Remaining teeth are intact. The 43,44, 47 48 teeth have no contact with antagonists and their oral deviation makes up 1 cm. What is the optimal construction of lower jaw denture?
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The department of maxillofacial surgery admitted a patient who needs repair of a post-traumatic defect of nose wing up to 3,0 cm in diameter. The trauma occured six months ago. What kind of grafting is indicated in this clinical situation?
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During taking of impressions at a dentist's appointment a patient presented with the following symptoms: paroxysmal cough, cyanosis, vomiting, clapping sound during inspiration. Make the diagnosis:
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At a dentist's appointment a patient complained of weakness, nausea, blackout, and then he lost consciousness. Make a diagnosis:
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During the preparation of a tooth a patient had an epileptic seizure. The seizure was arrested. What mistake did the orthopaedist make?
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A 32-year-old patient needs to be provided with metal-ceramic crowns for the 12, 11, 21 and 22 teeth. During the dental visit he is given infiltration anaesthesia with Ultracain DS anaesthetic. What elements enter into its composition?
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