DCA03TM Third Molar Surgery, 5th Edition _____________________________________________________
11. Which factor would increase the risk of damage to the inferior alveolar nerve during the extraction of a mandibular third molar? A) A high anatomical position of the inferior alveolar canal and inferior alveolar nerve. B) Partial impaction of the maxillary third molar. C) A thick mandible at the angle of the jaw. D) Soft tissue impaction. 12. Because of its variable relationship to third molars, which nerve is prone to stretching and deformation when the tissue on the lingual aspect of the impacted third molar is manipulated during an extraction? A) Inferior alveolar nerve B) Mylohyoid nerve
17. During the surgical extraction of mandibular third molars, which principle is paramount? A) All soft tissue incisions are made on the buccal side; all bone osteotomies are made on the buccal side. B) Soft tissue incisions can be made on both buccal and lingual sides, but bone osteotomies are made on the buccal side only. C) All soft tissue incisions are made on the lingual side; all bone osteotomies are made on the buccal side. D) Bone osteotomies are made on the lingual side because the bone of the lingual cortex is thinner and less dense than buccal bone. 18. Intentional partial odontectomy (coronectomy) for the treatment of impacted mandibular third molars in close proximity to the inferior alveolar nerve (IAN) involves removal of: A) The entire crown of the impacted third molar (coronec- tomy). B) Part of the crown of the impacted third molar (partial coronectomy). C) The crown and the coronal part of the roots of the impacted third molar (partial odontectomy). D) The whole tooth and implantation of the roots back into the socket. 19. Which of the following statements is true regarding the extraction of third molars? A) The risks of extraction must be tempered by the benefits of extracting third molars. B) The American Public Health Association has endorsed the prophylactic extraction of third molars. C) The United Kingdom Health System advocates the removal of all impacted third molars. D) The risk of retaining asymptomatic third molars does not need to be discussed with patients. 20. Which of the following is an indication for the early (prophylactic) extraction of third molars? A) Restorable caries in the third molar tooth B) Occlusal caries in the adjacent tooth C) Development of cysts and tumors associated with third molars D) An asymptomatic impacted third molar
C) Lingual nerve D) Mental nerve
13. The Seddon classification of nerve injuries in the progression from minor to severe is:
A) Neurapraxia, neurotmesis, and axonotmesis. B) Axonotmesis, neurapraxia, and neurotmesis. C) Neurotmesis, axonotmesis, and neurapraxia. D) Neurapraxia, axonotmesis, and neurotmesis.
14. In the U.S., the preferred treatment modality for impacted wisdom teeth is: A) Extraction. B) Operculectomy. C) Antibiotic treatment only. D) Coronectomy (partial odontectomy).
15. Which is a general principle for the use of
instruments for the extraction of wisdom teeth? A) Periotomes should be used like elevators. B) The #65 forceps are ideal for mandibular third molars. C) Elevators must be used carefully so they do not damage or luxate adjacent teeth. D) The 3-0 suture is ideal for the closure of releasing inci- sions or nontension areas. 16. In cases of soft tissue impaction, a periosteal elevator is used after the incisions are made in order to: A) Create a buccal trough.
B) Separate the crown from the roots. C) c. Section the roots for elevation. D) Reflect a buccal full-thickness flap.
Course Code: DCA03TM
136
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