HomeKROK Question Archive
KROK Question Archive
KROK 2 Dentistry 2016 Questions | KROKEXAM
Browse 2016 KROK 2 Dentistry exam questions with answers and explanations.
Exam questions
200 Questions81828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120
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:
View question and answer
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 did not reveal cleft palate. Uvula does not move during pronunciation of sounds, its palpation does not cause gag reflex. What is the cause of indistinct pronunciation of sounds?
View question and answer
A 42-year-old woman has made an appointment with a prosthodontic office to make a denture. Objectively the dental formula is as follows: 18 . . . . 13 12 11 21 22 23 . . . . 28 48 47 46 45 44 43 42 41 31 32 33 34 35 36 37 . The patient has deep occlusion; clinical crowns are low; equator is not pronounced. The patient suffers from epileptic seizures. What kind of denture should be prescribed for this patient?
View question and answer
A 15-year-old girl complaining of moderate swelling of the left paroticmasticatory area is being examined by a dental surgeon. Palpation revealed the left parotid gland to be bulgy, dense, and painless. Turbid saliva is being secreted from the duct. The duct orifice is dilated, the surrounding mucosa is cyanotic, pastose, with teeth imprints. What disease is it?
View question and answer
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 hyperemic. Percussion of the tooth is extremely painful. X-ray picture shows improperly filled root canal. It is planned to remove the 21 tooth crown. What kind of anesthesia should be administered?
View question and answer
At a prosthetics dentistry clinic a 35-year-old patient received a porcelain-fusedto- metal crown for the 21 tooth. What is the minimum warranty period for porcelainfused- to-metal crowns under the current legislation?
View question and answer
During the preparation of a tooth a patient had an epileptic seizure. The seizure was arrested. What mistake did the orthopaedist make?
View question and answer
During the surgical removal of a retention cyst of the lower lip a 14-year-old boy complained of sudden weakness, dizziness, nausea. Objectively: the skin is covered with cold sweat. Respiration is frequent, pulse is weak, BP is low (90/60 mm Hg), the hands are cold. What is the most likely diagnosis?
View question and answer
A 56-year-old patient addressed a dental surgeon for extraction of the 27 tooth. What anesthesia should be applied?
View question and answer
A 28-year-old patient has been suffering from gum discomfort, gingival hemorrhages and pain, especially during eating, for a week. Objectively: the gums are swollen and markedly hyperemic, especially in the area of the 43, 42, 41, 31, 32, 33 teeth, soft plaque and tartar are present, gingival sulcus is up to 2 mm deep. What is the most likely diagnosis?
View question and answer
An 18-year-old patient complains of chalky spot in the 23 tooth, which is slightly painful when cold stimulus is applied. Objectively: the vestibular surface near dental cervix of the 23 tooth has a white spot 2-3 mm in size. Probing is painless and reveals coarseness of the surface. Thermal stimulus causes slight pain. What is the most probable diagnosis?
View question and answer
A 12-year-old child presents with body temperature of 38°C, chills, nausea, vomiting, delirium, weakness. In the middle third of the face there is butterfly-shaped rash. Regional lymph nodes are enlarged, slightly painful. Blood count: WBC- 12 × 109/l, lymphocytes - 8, 0 × 109/l, ESR - 26 mm/hour. Make the diagnosis:
View question and answer
Objective examination of a 65-yearold patient with the completely edentulous mandible revealed a marked uniform atrophy of the alveolar bone; bony prominences on the lingual surface in the region where premolars had previously been. Mucosa was unevenly pliable; alveolar crest was mobile in the frontal region. The clinical condition of the mandible should be taken into consideration at the following stage of denture fabrication:
View question and answer
A 62-year-old patient diagnosed with TMJ arthritis presented to a clinic. The patient underwent radiography. Specify the radiological presentations of TMJ arthritis:
View question and answer
A 45-year-old patient has a bilateral mental mandibular fracture with a typical displacement of fragments. What actions should be taken to eliminate asphyxia?
View question and answer
A 53-year-old patient complains of absent 12, 11, 21 and 22 teeth. On examination it is decided to make a porcelainfused- to-metal bridge with the 13 and 23 as abutment teeth. During preparation ledges are created in abutment teeth. Ledge width can vary within the following range:
View question and answer
A 16-year-old girl complains of cosmetic defect of the front teeth - there are dark spots and hard tissue defects. The spots were detected in the process of teething, the defects developed later. The following diagnosis was made: erosive form of fluorosis of the 16, 11, 12, 22, 26, 31, 32, 36, 41, 42, 46 teeth. Choose the method of treatment:
View question and answer
Parents of a 6-year-old boy complain of his high body temperature, decrease of his general well-being, painful swelling of the right cheek. Objectively: the skin is pale, the face is asymmetric due to swelling of the soft tissues of the right cheek. The maxillary alveolar process is bilaterally thickened in the area of the 55, 54 and 53 teeth, painful on palpation, these teeth are partially destroyed by caries, mobile (II-III-degree), their dentogingival pockets produce pus. What is the most likely diagnosis?
View question and answer
In the process of the 26th tooth extraction a 34-year-old patient suddenly developed the following symptoms: tinnitus, weakness, paleness of skin. Vertigo was diagnosed. What is the most advisable first aid approach?
View question and answer
A 53-year-old patient complains of an ulcer on the lateral surface of the tongue. The ulcer appeared 6 months ago in the result of a trauma caused by sharp tip of the 37 tooth metal crown. A dentist replaced the crown with the one of better quality and prescribed keratoplastic drugs. Despite these measures the ulcer continues to grow. Lately there has been pain during talking, chewing, swallowing; sometimes the pain irradiates to the pharynx. Objectively: on the lateral surface of the tongue there is a painful ulcer with uneven raised dense margins and lumpy floor covered with grayish necrotic coating. What diagnosis is most likely?
View question and answer
An 8-year-old child has been clinically diagnosed with exacerbation of chronic periodontitis of the 84 tooth. The crown is decayed by 1/2. What is the dentist’s optimal tactics?
View question and answer
A laminar denture for the lower jaw is being made for a 54-year-old patient. Base plate wax is used during laboratory stage for wax templates. What group of accessory materials does such wax belong to?
View question and answer
A 28-year-old patient has been scheduled for the surgical resection of the root apex of the 12 tooth for chronic granulomatous periodontitis. What kind of anesthesia should be administered before the surgery?
View question and answer
A 11-year-old child complains of pain during eating food, especially hot, in the lower right lateral tooth. On the masticatory surface of the 46 tooth there is a large carious cavity filled with softened light-brown dentin. The cavity is located within parapulpar dentin. In the projection of medial buccal pulp horn the carious cavity communicates with the pulp chamber. Deep probing is painful. Electric pulp test - 60 microamperes. Make the diagnosis:
View question and answer
A 34-year-old male patient complains of a cosmetic defect, a cavity on the vestibular surface in the cervical part of the 21 tooth. Objectively: the carious cavity is within the enamel, the floor and the walls are pigmented, probing and percussion and painless. There is no pain reaction to stimuli. What is the most likely diagnosis?
View question and answer
A 12-year-old boy complains of dull ache in the upper right tooth. The pain aggravates during biting. Objectively: in the 16 tooth there is a deep carious cavity penetrating into the tooth cavity, cold test and probing are painless, mucosa is swollen, hyperemic. X-ray reveals areas of bone tissue destruction with blurred margins near root apices. What diagnosis is most likely?
View question and answer
To fill a medium depth carious cavity in the 37 tooth (Black class II) of a 35-year-old male patient a doctor has chosen a technique of layer-by-layer tooth restoration. What composite material should be applied for covering the carious cavity walls and floor to create the initial super adaptive layer?
View question and answer
A patient suffered a facial trauma. On examination and X-ray the patient was diagnosed with fracture of the maxillar alveolar process. What treatment would be most advisable in this case?
View question and answer
A 20-year-old male patient complains of spontaneous pain in the 24 tooth, which arose suddenly and persists for about 15 minutes at a time. Objectively: the distal surface of the 24 tooth exhibits a deep carious cavity with overhanging walls. The cavity is filled with light-colored softened dentin and communicates with the tooth cavity. The cold stimulus causes acute, slowly abating pain. Percussion causes no pain response. Select the best method of treatment:
View question and answer
A 9-year-old girl has been suffering from gingival hemorrhages, cracks in the mouth angles for a month. She has a history of frequent nosebleeds, rapid fatigability. Objectively: the skin of the face and oral mucosa are pale. In the mouth angles there are cracks reaching the red border. Gingiva in the region of the 11 and 12 teeth is hyperemic and edematous, bleeds when touched.DMF/dmf = 10. Back of the tongue is bright red, smooth, glossy. Submandibular lymph nodes are slightly enlarged, mobile, painless. What specialist should be consulted in the first place?
View question and answer
A 25-year-old patient complains of pain when biting on the 15 tooth. The pain arose two days ago, has a constant aching nature and increased significantly over the last day. Objectively: the crown of the 15 tooth is gray, the medial contact surface exhibits a deep carious cavity communicating with the tooth cavity. Percussion causes acute pain, the gingival mucosa in the projection of the 25 tooth root apex is hyperemic. The regional lymph node is tender. Radiograph shows an ill-defined zone of periapical bone destruction. What is the most likely diagnosis?
View question and answer
A 27-year-old patient has been referred by a prosthodontist for endodontic treatment of the 45 tooth. Objectively: the 45 tooth crown is destroyed; the lateral surface of the tongue and the buccal mucosa have patches of grayish macerated epithelium slightly rising above the mucosa surface at the points of direct contact with the 45 tooth. The uvula and palatine arches are stagnant-red in color; hard palate has papulae surrounded with red margin and covered in grayish epithelium. The submandibular, cervical, supraclavicular, and subclavicular lymph nodes are enlarged and painless. What is the provisional diagnosis?
View question and answer
A 20-year-old male patient with insulindependent diabetes mellitus has been given anesthesia with Ultracain DS-forte for surgical oral sanitation. What complications may develop in this case?
View question and answer
As a result of an injury the 51and 61 teeth of a 3-year-old child have completely cut into the alveolar bone. Medical history record: the teeth were partially decayed, changed in colour. Select an appropriate treatment tactics:
View question and answer
A 5-year-old girl complains of pain in the mouth angles occurring during mouth opening. She has a history of acute bronchitis and prolonged antibiotic therapy. Objectively: the red border is dry, the mouth angles are downturned. In the mouth angles there are cracks covered with white plaque and surrounded by slightly hyperemic elevation, painful on palpation and mouth opening. Oral mucosa exhibits no pathological changes, decay-missing-filled index - 2, hygiene index - 2,0. What is the most likely diagnosis?
View question and answer
A 43-year-old patient complains of mobility and significant neck exposure of the lower front teeth. Objectively: the gums in the region of the 44, 43, 42, 41, 31, 32, 33, 34 teeth are pale and cyanotic, non-bleeding. The 42, 41, 31, 32 teeth exhibit the I-II grade mobility. The overcrowding of the 42, 41, 31, 32 teeth is present. The necks of the 42, 41, 31, 32 teeth are exposed by 1/2 of the root length, the necks of the 43, 33 teeth are exposed by 1/4. What kind of dental prosthesis should be applied in this case?
View question and answer
A patient complains of fever up to 38°C, headache, pain in the joints anf muscles, vesicles in the oral cavity, mainly in the frontal part. Eating is sharply painful. For the last several years the disease recurred during wet anf windy weather. The patient often suffers from cases of URTI. Objectively: on the buccal, lingual, labial mucosa there are confluent erosions against the erythematous background, covered in graywhite coating. There are bloody scabs on the red border and in the angles of the mouth. Make the diagnosis:
View question and answer
A 14-year-old adolescent complains of bleeding and pain during eating occurring in the 36 tooth. Anamnesis states intense pain in the past. Objectively: the crown is severely damaged; carious cavity is large, penetrates into the tooth cavity, and is partially filled with overgrown pulp. The tissues demonstrate low sensitivity to touch, bleed upon touching. There are significant soft dental deposits on the 35 and 34 teeth.Make the diagnosis:
View question and answer
The 47, 46, 45, 35, 36, 37, 38 teeth of a 57-year-old patient are missing. It is planned to make a clasp denture. The 48 tooth inclines to the lingual side and forwards. On the lingual side of the 48 tooth the border line is diagonal, on the buccal side it runs on a level with gingival edge. What type of Ney’s clasp should be applied?
View question and answer
A 12-year-old boy due to trauma of the 44 and 45 teeth area suffers from the following: pathologic displacement of the mandibular alveolar process; rupture of the alveolar process mucosa. What additional examination is necessary to specify the diagnosis?
View question and answer