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KROK 2 Dentistry 2010 Questions | KROKEXAM
Browse 2010 KROK 2 Dentistry exam questions with answers and explanations.
Exam questions
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It is planned to organize a dental room with three universal dental sets. The total area of the room must be:
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During pulpitis treatment of the 25 tooth a 30-year-old patient received an injection of 2% lidocaine as anaesthetic. A few minutes after the injection th patient presented with numb tongue, asphyxia, dry cough, cyanosis, anxiety, convulsions. Arterial pressure fell down to 90/60 mm Hg. What is the most likely diagnosis?
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A 50-year-old patient has median lower jaw fracture with formation of false joint. The 38, 32, 31, 41, 42, 48 teeth are missing. The remaining teeth are intact, stable. There is no displacement of lower jaw fragments. X-ray picture shows a bone tissue defect 1 cm large. What prosthesis is indicated?
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A 60-year-old male patient has an extensive defect of nose caused by an injury. The patient temporarily refused operative intervention, it was suggested to fabricate an external nasal prosthesis fixed by eyeglass frame. What impression material should be used?
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A 53-year-old patient consulted a prosthodontist about lateral teeth mobility, frequent falling out of fillings. Objectively: all the molars and premolars of the lower jaw exhibit I degree mobility. Approximal masticatory surfaces have fillings. What splint construction should be applied in this case?
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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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Parents of a 4-year-old child complain about speech defect, namely lallati-on. Examination shows limited tongue movements, when the tongue is moved forward it turns down, the lower edge of tongue frenulum is positioned in front of the submandibular salivary ducts. The frenulum is thin and transparent. Specify the terms of operative intervention:
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A 43-year-old patient complains about teeth mobility in the frontal region of his lower jaw, as well as significant cervixes exposure. Objectively: gums in the region of the 44, 43, 42, 41, 31, 32, 33, 34 teeth are pale with cyanotic tint. The 42, 41, 31, 32 teeth present with I-II-degree mobility. The 42, 41, 31, 31 teeth are overcrowded. The 42, 41, 31, 32 teeth have cervix exposure by 1/2 and the 43,33 teeth have cervix exposure by 1/4. What orthopaedic construction should be used in this situation?
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Preventive examination of an 8-year-old boy revealed some lusterless chalklike spots on the vestibular surface of the 11 and 21 teeth, which are localised in the precervical region. Subjective complaints are absent. What is the most likely diagnosis?
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A 66-year-old male patient suffers from coronary heart disease (CHD) and atherosclerosis. During stomatological treatment the patient complained about acute retrosternal pain with irradiation to the left scapula, that was accompanied by stupor of the left hand. Objectively: the skin was pale, the sweat stood out on his forehead. The arterial pressure was 140/90 mm Hg, pulse was rhythmic 75 bpm. The pain wasn't relieved by Validol but it started to abate after nitroglycerin intake. What disease provoked the attack in this patient?
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A patient complains about intensive throbbing toothache in his lower jaw on the left. He can't show the aching tooth. It hurts all the time, the pain goes down sometimes, but it becomes stronger as affected by stimuli. Within the last hours the pain provoked by cold stimuli has somewhat reduced. Objectively: the 17 tooth has a carious cavity, probing causes no pain, the pulp chamber is closed. What method of treatment is indicated?
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3 months after the immediate prosthetics a patient complained about the prosthesis balancing. Objectively: there is a gap between the prosthesis edge and vestibular surface of alveolar process. What is the tactics of choice?
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A patient undergoes orthopaedic treatment of bounded edentulous spaces on the upper jaw. He needs fixed full-cast dentures. During his second visit it is required to check whether the internal surface of the metal framework of the future metal-ceramic denture matches the surfaces of the prepared teeth. In what way could this be done?
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A 19-year-old girl complains about having crusts, lip tenderness, especially at lip joining. Objectively: there are yellow-brown crusts on the lip red border from Klein zone to it's middle, after their removal bright red smooth surface without erosions appears. Mucous membrane in Klein zone is slightly hyperemic and edematic. What is the most likely diagnosis?
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A 43-year-old patient complains about constant pain in the upper jaw region on the right, that irradiate to the temple. The pain was noted one month ago. Objectively: the face is asymmetric because of the swollen right cheek. Mucous membrane has no changes. The breathing through the right nasal meatus is obstructed, there are foul-smelling saniopurulent discharges. Plan X-ray film of facial skeleton in the semi-axial projection shows intensive opacity of the right maxillary sinus and violated intactness of its interior and superior walls. What is the most likely diagnosis?
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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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Parents of a 6-year-old child consulted a dentist about oral cavity sanitation. Objectively: the 85 tooth has a carious cavity on the distal surface within the mantle dentine. Floor and walls are dense and pigmented. Probing is painless. Cold stimuli and percussion cause no pain. What is your provisional diagnosis?
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A patient complains about acute constant pain that is getting worse when biting down on food, sensation of a recently erupted tooth on the right upper jaw. Examination of the 15 tooth revealed a deep carious cavity communicating with the dental cavity. Tooth percussion causes acute pain. Probing is painless. Mucous membrane in projection of the root apex is hyperemic, painful on palpation. X-ray picture shows no changes. What is the most likely diagnosis?
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A 48-year-old male patient has been wearing partial removable dentures for 3 months. According to the patient, results of physical examination and additional methods of testing, the patient was diagnosed with allergic stomatitis provoked by dyes of the acrylic resin of his prosthesis. Allergic effects of dyes can be eliminated in the following way:
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A 43-year-old patient complains about a neoplasm in the right submandibular region that appeared a month ago after angina. The patient underwent antiinflammatory therapy but it led to no reduction of the neoplasm. Objectively: body temperature is up to 37, 2°C. Palpation reveals a slightly painful, spherical, freely movable, well-defined neoplasm of dense and elastic consistency in the right submandibular region. The duct of submandibular salivary gland discharges transparent saliva. The sublingual plica is unchanged. What is the most likely diagnosis?
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A patient ordered soldered stainless-steel bridge prostheses. Their fabrication involves calibration of crown sleeves. Which device is used for this purpose?
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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 50-year-old female patient complains about sensation of tightness of buccal mucosa and roughness of the lateral surface of tongue. The patient undergoes regular check-up at a dispensary department for compensated form of diabetes mellitus. Objectively: there are white and grey areas in form of lacy pattern on the buccal mucosa on the right and on the lateral surface of tongue. The surface of affected region cannot be scraped off. What is the most likely diagnosis?
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A 45-year-old patient consulted a dentist about extraction of the 13 tooth. What tools should be applied for extraction?
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According to the mother, a 5-year-old child complains about pain during swallowing, weakness, body temperature rise upt to 39,5°C, swelling of submental lymph nodes. Objectively: the child's condition is grave, body temperature is 38,8°C. Mucous membrane of oral cavity is brightly hyperemic and edematic with hemorrhages and ulcerations. Pharynx is brightly hyperemic, lacunae are enlarged and have necrosis areas. Regional, cervical, occipital lymph nodes are painful, enlarged and dense. What is the most likely diagnosis?
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A 28-year-old patient suffers from a disease without prodromal manifestations that declares itself through oral mucosa lesion consisting of 1-2 roundish elements 5-8 mm large which are circumscribed by a hyperemic rim and covered with yellow-grey coating. The disaese recurrence is observed quite regularly 3-4 times a year. These presentations are typical for the following disease:
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A 48-year-old female patient complains about some discomfort induced by wearing an upper jaw clasp denture with elastic attachments. The patient notes the denture mobility during mastication and articulation. The patient asks to fabricate a new denture with consideration of the indicated defects. Clinical crowns of abutment teeth are low. What fixation should be the most efficient in this case?
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A 75-year-old patient ordered a complete removable denture for the upper jaw. While adjusting the individual tray by Herbst's method the orthodontist revealed that the tray could be thrown off when the patient rounded his lips. What part of the tray requires correction?
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A 36-year-old woman complains about experiencing lip dryness and desquamation for a month. Application of indifferent ointments is ineffective. Objectively: red border of lower lip is of rich red color, it is moderately infiltrated, covered with closely adhering greyish scales, it bleeds and hurts in the attempt to remove them. Opacification of epithelium in form of white stripes is present in the nidus periphery, there is also an area of depression in the centre. What is the most likely diagnosis?
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A 30-year-old patient complains about pain in the upper jaw tooth caused by sweet and cold food, that was first registered one month ago. Objectively: the 26 tooth has a carious cavity within mantle dentine. Dentine of its walls is softened. Probing along the enamel-dentine junction is painful. Percussion is painless. Thermodiagnosis causes pain, that quickly abtes after elimination of stimulus. What is the most likely diagnosis?
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A 55-year-old patient has a repeated appointment with a dentist. He has ordered complete removable lamellar dentures for both upper and lower jaws. During his previous visit the dentist took complete anatomic impressions of both jaws and sent them to the dental mechanic. What manipulations should the dentist perform at the next clinical stage?
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A 47-year-old patient complains about a sensation of foreign body on his tongue, discomfort during talking, oral cavity dryness. Objectively: there are dark filiform papillae up to 5 mm long on the back of tongue. What is the most likely diagnosis?
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A patient complains about destroyed crown of the 27 tooth. The patient was diagnosed with chronic periodontitis of the indicated tooth. Objectively: the crown of the 27 tooth is destroyed completely. It is necessary to extract this tooth. What field block anesthesia should be applied for operation?
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A 32-year-old patient complains about a cosmetic defect. Objectively: the crowns of 12, 11, 21, 22 teeth are destroyed by caries by 2/3 of their height. The occlusion is orthognathic. X-ray picture shows that root canals are filled to the top. There are no patological changes in periapical tissues. What construction should be the most efficient in this situation?
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A 25-year-old male patient came to the traumatology. He complains about pain in the right half of his face, limited mouth opening. Objectively: there is a moderate edema and haematoma in the region of the right malar arch. Palpation shows a slightly painful impaction of bone tissue in the region of the right malar arch. The bite isn't disturbed. Amplitude of mouth opening is 1,5 cm. At making an attempt to open the mouth wider the patient feels a mechanical obstacle and pain intensification. What is the most likely diagnosis?
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The patient is 75 years old. The inspection of construction of complete removable dentures revealed that only lateral artificial teeth were in contact, there was a gap between frontal teeth. In the lateral part on one side cusp-to-cusp contact was present, on the other side there was a horizontal gap; the central line was deviated. What mistake was made?
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A 5-year-old child sustained a dental injury. Objectively: the crowns of the 51, 61 teeth are shorter than neighbouring teeth by 1/2. Mucous membrane is edematic and hyperemic in theregion of the 51, 61 teeth. X-ray picture shows that there is no periodontal fissure in the apical parts of roots of the 51, 61 teeth, apexes of the 51, 61 teeth are imbedded into the spongy substance of body of maxilla. What treatment tactics would be the most efficient?
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A 5-year-old child had to undergo an operated for ankyloglossya. There were no external symptoms of preoperative anxiety. Aafter injection of 1,5 ml of 0,5% novocaine solution the child presented with motor anxiety, vomiturition, stomachache. Objectively: the child is conscious, face and neck skin is hyperemic, tachypnoe is present, pulse is rapid. What is the most likely diagnosis?
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A 19-year-old patient complains about pain in the submental part of mandible. The day before he got a trauma. Objectively: there is a slight swelling of tissues in the mental area. The mouth can be opened widely enough. All the teeth are intact. Mucous membrane is edematic in the region of central incisors, it bleeds slightly. In this region mobility of mandible fragments is present. Occlusion is undisturbed. What splint should be chosen by the dentist?
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A 27-year-old woman has been treated for pulpitis by method of devital extirpation. Arsenic paste was left in the 15 tooth. The patient came to see a dentist for the second time only on the fourth day after her previous visit. She was diagnosed with toxic periodontitis. What is the most optimal agent for treatment of root canal in this case?
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