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A Patient with a Pre-Existing MOD Amalgam

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A patient with a pre-existing MOD amalgam Following a pulpotomy in a second primary restoration has just had endodontic therapy molar with extensive occlusal caries, what is completed on tooth 4.6 but cannot afford a the most appropriate restoration? laboratory fabricated final restoration. Interim restorative management of 4.6 with the best A. Resin-modified glass ionomer. prognosis is to B. Bonded amalgam. C. Composite resin. A. restore with a MOD amalgam. D. Stainless steel crown. B. reduce the occlusal out of occlusion and restore with a MOD amalgam. C. cusp cap the buccal and lingual cusps and restore with a MOD amalgam. Which of the following space maintainers is D. restore with a bonded MOD composite most appropriate for a patient with the bilateral resin. loss of mandibular first primary molars prior to the eruption of the permanent molars and permanent incisors? Maxillary incisor protrusion can be treated by A. Lingual holding arch. B. Bilateral distal shoes. 1. premolar extraction with orthodontic C. Bilateral band and loop. retraction of the incisors. D. Nance appliance. 2. premolar extraction with surgical repositioning of the anterior dentoalveolar segment. 3. extraction of the incisors, alveoloplasty The most likely diagnosis for a patient with an and prosthodontic replacement. interincisal opening of 30mm before feeling 4. reduction and genioplasty. pain and a maximum opening of 44mm with pain is A. (1) (2) (3) B. (1) and (3) A. internal derangement of the TMJ with C. (2) and (4) reduction. D. (4) only B. internal derangement of the TMJ without E. All of the above. reduction. C. trismus of the masticatory muscles. D. subluxation of the TMJ. E. myofascial pain. Metallic salts are included in root canal sealers to make the sealers A. stronger. Following the administration of a right inferior B. radiopaque. alveolar nerve block, right facial paralysis is C. set more rapidly. noted. Which of the following muscles is NOT D. tolerated by periapical tissues. affected? E. bond to dentin. A. Levator palpebrae superioris. B. Buccinator. C. Mentalis. D. Nasalis. E. Orbicularis oris. Note: Some of the items in the Released Test Item Bank may have been discontinued due to outdated science or errors. In addition, the format of some items is not currently used. The NDEB periodically reviews the bank to improve its quality, content, and translation. ©The National Dental Examining Board of Canada 2016 The postnatal increase in width of the maxilla A patient has suffered a blow resulting in the results from loosening of three maxillary incisors. Vitality tests give negative readings. The most A. sutural growth. appropriate management is to B. appositional growth. C. both appositional and sutural growth. A. perform pulpectomies on the teeth. B. remove the teeth, fill the root canals and replant. C. splint the teeth, check vitality in one The most appropriate management for a tooth month and if negative, treat with a history of previous trauma and apical endodontically. resorption is D. splint the teeth and treat endodontically immediately. A. observation over 6 months for further resorption. B. complete instrumentation and medication with intracanal calcium hydroxide. Which of the following should NOT be C. immediate instrumentation and obturation prescribed for a patient receiving warfarin? followed by apical curettage. D. extraction, apical resection, retrofilling A. Acetaminophen. and replantation. B. Metronidazole. E. extraction and replacement with a fixed or C. Penicillin. removable prosthesis. D. Codeine. Radiographs of the mandibular incisor teeth of Which of the following is the most appropriate a 45 year old healthy patient reveal periapical for pain management following an emergency radiolucencies. The teeth are vital and pulpectomy for an adult with a history of asymptomatic. The most appropriate severe asthma and nasal polyps? management is to A. Naproxen. A. perform a biopsy of the radiolucent B. Acetylsalicylic acid. lesion. C. Ketorolac. B. perform endodontic therapy on the four D. Acetaminophen. incisors. C. place a drain in the affected area. D. observe periodically. Metronidazole can be used to treat A. denture stomatitis. B. recurrent aphthous ulcers. C. necrotizing ulcerative gingivitis (NUG). D. primary herpetic gingivostomatitis. Note: Some of the items in the Released Test Item Bank may have been discontinued due to outdated science or errors. In addition, the format of some items is not currently used. The NDEB periodically reviews the bank to improve its quality, content, and translation. ©The National Dental Examining Board of Canada 2016 Which of the following may be used to Which of the following could NOT be an disinfect gutta-percha points? immediate postoperative complication of periapical surgery? A. Autoclave. B. Chemical solutions. A. Haemorrhage. C. Flame sterilization. B. Edema. D. Dry heat sterilization. C. Paresthesia. D. Pain. E. Mucocele. During endodontic treatment a file separates. The fragment is 3mm long and is lodged tightly in the apical third of the canal. No radiographic The mechanical objectives of preparing the changes at the apex are evident. In addition to root canal system for obturation with gutta- informing the patient, the most appropriate percha should include management is to A. development of a continuously tapering A. extract the tooth. cone in the root canal. B. perform an apicoectomy and place a B. removal of irregularities. retrograde filling. C. maintenance of an intact foramen. C. resect the apical section of the root D. All of the above. containing the separated instrument. D. complete the root canal filling and monitor at recall examination. When root canals are treated topically with antibiotics rather than with disinfectants Which one of the following is the most A. a greater success rate results. appropriate initial treatment for internal B. the same rules of mechanical preparation resorption? and filling must be observed. C. treatment may be completed in fewer A. Pulpectomy. appointments. B. Pulpotomy. D. there is greater assurance that all micro- C. Pulp capping. organisms are destroyed. D. Apicoectomy. The anterior palatine foramen is most likely to When performing endodontic treatment on a be radiographically misdiagnosed as a vital tooth, the most appropriate termination point of apical root canal preparation is A. rarefying osteitis. B. nasolabial cyst. A. 0.5 to 1mm short of the radiographic C. cyst of the incisive papilla. apex. B. 3mm short of the radiographic apex. C. slightly through the apical foramen. D. to the point where the patient feels sensation. Note: Some of the items in the Released Test Item Bank may have been discontinued due to outdated science or errors. In addition, the format of some items is not currently used. The NDEB periodically reviews the bank to improve its quality, content, and translation. ©The National Dental Examining Board of Canada 2016 The most appropriate emergency management When removal of carious dentin results in an of a mature permanent tooth with acute exposure of non-vital pulp, the most irreversible pulpitis is appropriate management is to A. pulpotomy. A. perform endodontic treatment. B. pulpectomy. B. cap the exposed pulp horn with calcium C. incision and drainage. hydroxide. D. trephination. C. occlude the cavity with a light packing of E. apical surgery. cotton moistened with eugenol. D. place a temporary restoration and observe. A patient's 4 mandibular incisors were traumatized 3 years ago in an accident. Radiographs now show apical radiolucencies Elective root canal therapy may be safely and associated with all 4 teeth. The most successfully undertaken for all of the following appropriate management is to EXCEPT A. test the pulp vitality and perform root A. hemophiliacs. canal therapy on teeth with no response. B. patients with a history of rheumatic fever. B. perform root canal therapy on all 4 teeth C. pregnant patients during first trimester. and curette the periapical area. D. pregrant patients during second trimester. C. extract the teeth and place a bonded bridge. D. postpone treatment and recheck status periodically. Which of the following conditions would NOT require antibiotic premedication before endodontic therapy? The prognosis for an avulsed tooth is A. Valvular heart disease. principally affected by B. Cardiac prosthesis. C. Persistent odontogenic fistula. A. length of time the tooth was out of the D. Total joint replacement. mouth. B. condition of the socket when the tooth was replanted. C. removal of necrotic cementum. During post preparation on a maxillary central D. pulp extirpation. incisor, the labial surface of the root is perforated. The most appropriate management is to An 80 year old patient can be expected to have A. extract the tooth. B. cement the post using zinc-oxyphosphate A. a reduced size of the pulp chamber. cement. B. a reduced incidence of pulp stones. C. cement the post, then raise a flap and seal C. a reduced tendency to pulpal fibrosis. the defect surgically. D. a reduced tendency for pulp bleeding. D. re-prepare the canal so the post is now totally within the canal and cement the post. Note: Some of the items in the Released Test Item Bank may have been discontinued due to outdated science or errors. In addition, the format of some items is not currently used. The NDEB periodically reviews the bank to improve its quality, content, and translation. ©The National Dental Examining Board of Canada 2016 Retention of an inlay is improved by Treatment of primary herpetic gingivostomatitis should include 1. addition of an occlusal dovetail. 2. increasing the parallelism of walls. 1. steroid therapy. 3. lengthening the axial walls. 2. palliative treatment. 4. placing a gingival bevel. 3. application of dilute hydrogen peroxide. 4. control of secondary infection. A. (1) (2) (3) B. (1) and (3) A. (1) (2) (3) C. (2) and (4) B. (1) and (3) D. (4) only C. (2) and (4) E. All of the above. D. (4) only E.
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