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KROK 2 Dentistry 2014 Questions | KROKEXAM
Browse 2014 KROK 2 Dentistry exam questions with answers and explanations.
Exam questions
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After examination a 5-year-old child was diagnosed with acute general pulpitis of the 74 tooth. What treatment will be most efficient in this case?
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A 38-year-old female patient complains of pain in the 16 tooth, which appeared 3 days after placing an artificial crown over the tooth. Objectively: the 16 tooth is crowned with a full metal swaged crown. The gingiva around the tooth is hyperemic, edematous. The crown margin is submerged into gingival pocket by more than 0,5 mm. What is the cause of this complication?
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A 34-year-old female patient presented to a dental clinic for the prosthetics of the mandibular teeth. Objectively: the mandibular teeth exhibit the I-II class mobility. Which of the following examination methods should be applied?
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A 29-year-old female patient presented to a dental clinic for prosthetics. Objectively: there is a carious cavity on the masticatory and mesial surfaces of the 24 tooth. Interdental contact is inadequate. Classify this cavity according to Black's classification:
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A patient complains of spontaneous, paroxysmal, irradiating pain with short pain-free intervals. The pain arose 2 days ago and occurs only at night. Make a provisional diagnosis:
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A 40-year-old female patient complains of swelling of the left submandibular region which appeared three days ago; elevation of body temperature up to 37,4°C. Objectively: the left submandibular region exhibits a soft tissue edema, the skin color is not changed. Palpation reveals a roundish dense elastic node with a smooth surface sized 2,0 x1,5 cm. The node is mobile, somewhat tender. Mouth opening is not restricted, oral mucosa exhibits no visible changes, the crown of the 36 tooth is decayed by 2/3, its percussion causes pain response. What is the most likely diagnosis?
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A 70-year-old female patient complains of burning sensation under the base of her complete denture; dryness and bitterness in the mouth. The denture was fabricated 3 weeks ago. Objectively: the alveolar bone mucosa is edematous, there is diffuse hyperemia up to the margins of the denture. The tongue is hyperemic, dry and cracked. What additional study would be most appropriate in this case?
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A 44-year-old female patient presented to a dental clinic for prosthetics. Objectively: the 17, 16, 15, 14, 12, 25, 26 teeth are missing; the 18, 28 teeth are preserved. Make a diagnosis according to Kennedy classification of partial edentulousness:
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A 45-year-old female patient presents to a dental clinic for prosthetics. Objectively: the 47, 46, 45, 35, 36, 37 teeth are missing. There is dentoalveolar vertical displacement of the 17, 16, 26, 27 teeth; the alveolar process is hypertrophied, the cervical margins are not exposed. When the teeth are closed, the distance between the occlusal surfaces of teeth and the alveolar process is about 6 mm. Specify the most efficient method of treatment of secondary deformation in this patient:
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A 25-year-old female patient consulted a dentist about acute pain in the mandible on the right that occurs during eating. Objectively: the approximate distal surface of the 45 tooth exhibits a carious cavity filled with light softened dentin. Probing causes a minor pain response across the entire floor. Percussion causes no pain. Cold water causes transient pain. What is the most likely diagnosis?
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A 45-year-old male patient has been admitted to the maxillofacial department with complaints of general weakness, pain and swelling in the left submandibular region, elevation of body temperature up to 39°C. He has a history of frequent pain in the 36 mandibular tooth on the left. The face is asymmetric due to the swelling of the left submandibular region, where a dense infiltrate is palpable; the overlying skin is hyperemic, doesn't make a fold. There is a deep carious cavity in the 36 tooth, its percussion causes pain response; the surrounding mucosa is hyperemic, edematous. What is the most likely diagnosis?
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A month after cementing a porcelain-fused-to-metal crown for the 23 tooth, the patient complained of its decementation. On examination the tooth stump was of sufficient height, the stump walls were convergent to the vertical axis at an angle of about 30 degrees. What is the required angle of wall convergence?
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A 5-year-old child has been diagnosed with chronic granulating periodontitis of the 85 tooth. What is the optimal material for the root canal filling?
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A 65-year-old male patient undergoes fabrication of a full removable denture for the mandible. The individual tray for taking a functional impression is adjusted with the use of Herbst tests. The tray is thrown off during swallowing. This means that its edge is to be shortened in the following area:
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A 28-year-old female patient complains of a cosmetic defect in the anterior segment of the maxilla. Objectively: the crown of the 13 tooth is decayed nearly up to the gingival edge, the stump walls are of sufficient thickness. The stump has a slightly changed color, percussion causes no pain response. Radiographical findings: the root canal is straight, wide, and filled along the entire length. What prosthetic construction is most appropriate in this case?
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A 32-year-old patient complains of constant chewing-like movements of the mandible. These movements occur with nervous excitement. The patient's wife reports him to have gnashing of teeth at night. Objectively: the lateral teeth are worn, have no tubercles. What is the optimal treatment tactics?
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A 38-year-old female patient complains of pain in front of the external auditory meatus projection, clicking when opening the mouth, sensation of stuffiness in the ears. Objectively: the face is symmetric, the trajectory of mouth opening is straight. There is a I class Kennedy defect, the 17, 16, 26, 27, 28 teeth are missing. Which anatomical structure takes the greatest load in this situation?
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A 70-year-old male patient with the completely edentulous maxilla and a hard palate defect complains of difficult eating, pouring of liquid food through the nose, frequent chronic diseases of the nasal mucosa. Objectively: the maxillary alveolar bone is atrophied (Schroeder class I), the mucosa pliability complies with Supple class I. The hard palate exhibits a cicatrically changed defect sized 2x3 cm. What denture design would be most effective in this case?
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A 7-year-old child complains of fever up to 38,3°C, headache, sore throat and general weakness. Objectively: the mucosa of the soft palate, tonsils and palatine arches is edematous and hyperemic, there are numerous small painful erosions with red bottom. The erosions are not covered with any plaque. The submandibular lymph nodes are enlarged, painful on palpation. What is the most likely diagnosis?
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A 22-year-old patient complains of a painful swelling in the right parotid gland region. A week before the pati- ent got a cheek abrasion which was healing under the purulent crust. Over the past two days, the patient had had progressing pain and fever up to 38,6°C. Objectively: there is a soft tissue edema in the right parotid region, the skin is slightly tense but has not changed in colour. There is a dense painful infiltration 2,5x3,5 cm large, the overlying skin exhibits limited mobility. The mouth can be fully opened, the mucous membrane around the orifice of the salivary duct is unchanged, the saliva is transparent. What is the most likely diagnosis?
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A 42-year-old female patient consulted a dentist about a sudden dramatic enlargement of gingiva, bleeding sores on the mucous membrane, lymph node enlargement. There is body temperature elevation up to 38°C, weakness, pain in the bones. What disease can be suspected in this patient?
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A 56-year-old male patient presents to a dental clinic for complex dental treatment prior to prosthetic procedures. Objectively: there is a pathological grayish-white triangular lesion sized 0,5x1,5 cm on the buccal mucosa in the mouth corners. The lesion cannot be removed. There are no signs of inflammation, regional lymph nodes are unchanged. Make a diagnosis:
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A 24-year-old female patient presented to a dental clinic for the extraction of the maxillary wisdom tooth root. Following the posterior superior alveolar nerve block, a post-injection hematoma occurred. What structure was damaged during anesthesia?
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What is the most adequate surgical approach for a submandibular phlegmon dissection?
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A 12-year-old patient has chronic catarrhal gingivitis. The oral vestibule is 7 mm deep. Fedorov-Volodkina hygiene index is 4. Examination revealed no abnormalities of lip frenulum attachment. What measures should be taken in the first place?
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On the basis of subjective complaints, anamnesis and objective examination, a 5-year-old child has been diagnosed with impacted dislocation of the 71 tooth. What is the most appropriate treatment tactics?
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A 26-year-old male patient presents to a prosthetic dentistry clinic for a swaged metal crown for the 26 tooth. This is his third visit. During examination he has been found to have a hole on the medial buccal tubercle of the crown which appeared as a result of polishing. What tactics should be chosen?
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A 28-year-old patient complains that a piece of the 23 tooth crown has broken off. Objectively: the root canal orifices contain the filling material, percussion causes no pain response. What is the tactics of choice?
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A 58-year-old patient complains of stuffiness in the ears, hearing impairment, pain in the parotid region when opening the mouth. Objectively: the 18, 17, 16, 15, 26, 27, 28 teeth are restored with swaged metal crowns. There is a 1,5-2 mm gap between the crown edges and gingiva. The 14 and 25 teeth exhibit carious cavities. Probing, percussion and thermal stimuli cause no pain response. The patient has deep incisor overbite. What is the likely cause of otologic symptoms?
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A 32-year-old patient presented to a prosthetic dentistry clinic with a diagnosis of maxillary fracture.The fracture can be treated by means of standard maxillo-mandibular Zbarzh set. What construction provides the intra-oral fixation?
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A 25-year-old male complains of pain, a sensation of heaviness in the maxilla on the left. He has a history of the 25 tooth extraction followed by health deterioration. There appeared purulent discharge from the left nasal meatus. He was diagnosed with acute odontogenic left-sided sinusitis. Which nasal meatus should the maxillary sinus be punctured through?
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A 22-year-old male patient presented to a dental clinic with a cavity in the 11 tooth. The patient had no previous history of this tooth treatment. Objective examination revealed a carious cavity filled with light softened dentin on the approximate medial surface. The carious cavity was located within the mantle dentin. The tooth is slightly sensitive to the cold stimuli. What is the most likely diagnosis?
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A patient consulted an oral surgeon about maxillary pain on the left, which arose three days ago. After examination, the patient was diagnosed with exacerbation of chronic periodontitis of the 17 tooth. The 17 tooth is indicated for extraction. What nerves should be blocked for a painless extraction of the 17 tooth?
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A 35-year-old patient complains about itch, burning and edema of lips. These presentations occured a week ago. Objectively: there is reddening of vermilion border and lip skin, especially in the region of mouth corners, there are also vesicles, crusts, small cracks accompanied by erythematous lesion of vermilion border. What is the most likely diagnosis?
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A 6-year-old child complains of pain in a mandibular tooth on the left during eating. Objectively: masticatory surface of the 36 tooth exhibits a carious cavity within the mantle dentin. The cavity is full of light softened dentin which can be easily removed with an excavator. Probing of the cavity walls causes pain response. The teeth are sensitive to thermal stimuli, the pain is of short-term nature. There is no response to percussion. Select the optimal filling material:
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A patient undergoes orthopedic treatment for bounded edentulous spaces in the upper jaw with fixed full-cast dentures. At the second appointment it is necessary to check whether the inner surface of the metal frame of the future porcelain-fused-to-metal bridge fits the surface of the prepared teeth. How can this be done?
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A 44-year-old male patient needs a cast splint for the mandible. Objectively: there is a bilateral terminal defect of the mandibular dental arch. The tooth crowns are high, the teeth are intact, there is I-II class mobility. What impression material should be used?
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A 35-year-old male complains of short-term pain caused by thermal stimuli in the 46 and 47 teeth. Objectively: masticatory surfaces of the 46, 47 teeth are intact, approximate surfaces could not be examined because of a very close arrangement of teeth. What methods of study can be used in this case if you suspect the presence of hidden cavities?
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A 13-year-old child complains of having a cavity in the front maxillary teeth. Contact medial surfaces of the 11 and 21 teeth exhibit cavities found within the mantle dentine and filled with dense pigmented dentin. Probing of the cavity floor causes no pain response, neither does dental percussion. Select the best filling material for the permanent seals:
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Parents of a 3-year-old child report that the child has persistent pain in the front maxillary teeth. Objectively: the coronal part of the 61 tooth is gray and decayed. Probing of the root canal orifice causes pain response and is accompanied by bleeding. The tooth percussion provokes acute pain. Mucosa is hyperemic, edematous and tender. Palpation in the region of the 61, 62 teeth reveals a fistula. What is your provisional diagnosis?
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