Dentoalveolar Flashcards
Which of the following factors would be most important in deciding to remove a 2 mm fractured root tip of a maxillary molar?
(A) Close proximity of the root tip to the floor of the maxillary sinus
(B) Patient’s age less than 50
(C) Operator skill and experience
(D) Presence of periapical pathology
(D) Presence of periapical pathology
COMSSAT: 2019
Explanation:
Source: Miloro, M., et. al. (Eds.). (2004). Dentoalveolar surgery in Peterson’s principles of oral and maxillofacial surgery (2nd Ed), (pp. 152). BC Decker Inc.
Which of the following conditions is most likely to be associated with an asymptomatic erupted mandibular third molar in a young adult?
(A) Resorption of the distal root of the adjacent tooth
(B) Dental caries
(C) Localized periodontitis
(D) Dentigerous cysts
(C) Localized periodontitis
COMSSAT: 2019
Explanation:
Source:
Marciani, R. & White, R.P. (1996). Establishing disease and clinical outcomes in asymptomatic third molars. Oral and maxillofacial surgery knowledge update, vol. 4, pp. 7,12.
Marciani, R. (2007). Third molar removal: An overview of indications, imaging, evaluation, and assessment of risk. Oral and maxillofacial surgery clinics of north America, 19 (1), 1-3.
Which of the following is an indication to perform a sulcular incision instead of a scalloped mucogingival junction incision when performing periapical surgery on a maxillary incisor?
(A) Presence of a short root
(B) Preserving anterior gingival esthetics (C) Avoidance of releasing incisions
(D) Eliminate the need for suturing
(A) Presence of a short root
COMSSAT: 2019
Explanation:
Source:
Which of the following factors is associated with a favorable outcome when surgical uprighting second molars?
(A) Uprighting involving an arc of rotation of greater than 90 degrees
(B) Incomplete vertical growth of the mandible
(C) The need to correct the bucco-lingual position of the tooth
(D) Second molar root formation is 2/3 complete
(D) Second molar root formation is 2/3 complete
COMSSAT: 2019
Explanation:
Source:
The best technique for performance of a partial odontectomy (coronectomy) is to remove tooth structure:
(A) to a level approximately 3 mm above the level of the inferior alveolar canal and healing by secondary intention.
(B) so that the remaining roots are at least 3 mm below the crestal bone followed by healing by secondary intention.
(C) so that the remaining roots are at least 3 mm below the crestal bone followed by watertight primary closure.
(D) to a level approximately 3 mm above the level of the inferior alveolar canal followed by watertight primary closure.
(C) so that the remaining roots are at least 3 mm below the crestal bone followed by watertight primary closure.
COMSSAT: 2019
Explanation:
Source:
Pogrel, M.A., Lee, J.S. & Muff, D.F. (2004). Coronectomy: A technique to protect the inferior alveolar nerve. Journal of oral and maxillofacial surgery, 62(12), 1447-52.
Pogrel, M.A. (2007). Partial odontectomy. Oral and maxillofacial surgery clinics of north America, 19, 85- 91.
The best time to provide intravenous preoperative antibiotic therapy prior to removal of impacted third molars associated with pericoronal infection is:
(A) immediately prior to surgery.
(B) 0.5–2 hours prior to surgery.
(C) 3–4 hours prior to surgery.
(D) 6 hours prior to surgery.
(B) 0.5–2 hours prior to surgery.
COMSSAT: 2019
Explanation:
Source:
Mehrabi, M., Allen, J.M., Roser, S.M. (2007). Therapeutic agents in perioperative third molar surgical procedures. Oral and maxillofacial surgery clinics of north America, 19, 71.
Woods, R.K. & Dellinger, E.P. (1998). Current guidelines for antibiotic prophylaxis of surgical wounds. American family physician, 57(11), 2731-2740.
The best approach for surgical exposure of an impacted tooth for orthodontic bracketing is:
(A) complete exposure of the CEJ.
(B) partial exposure of the crown and avoiding exposure of the CEJ.
(C) complete exposure of the CEJ and 1 mm of surrounding alveolar bone.
(D) exposure of the crown until the greatest diameter of the crown is revealed regardless of
the CEJ.
(B) partial exposure of the crown and avoiding exposure of the CEJ.
COMSSAT: 2019
Explanation:
Source: Zeitler, D.L. (2004). Management of impacted teeth other than third molars, (pp. 133-134). In Miloro, M. (Ed.), Oral and maxillofacial surgery, vol. 1, BC Becker.
Which radiographic finding is most highly associated with inferior alveolar nerve exposure during surgical removal of mandibular third molars?
(A) Darkening of the third molar tooth root
(B) Narrowing of the third molar tooth root
(C) Deflection of the third molar roots
(D) A bifid inferior alveolar canal
(A) Darkening of the third molar tooth root
COMSSAT: 2019
Explanation:
Source: Sedaghafar, M., August, M.A., Dodson, T.B. (2005). Panoramic radiographic findings as predictors of inferior alveolar nerve exposure following third molar extraction. Journal of oral and maxillofacial surgery, 63, 3-7.
Valmaseda-Castellon, E., Berini-Aytes, L. & Gay-Escoda, C. (2001). Inferior alveolar nerve damage after lower third molar surgical extraction: a prospective study of 1117 surgical extractions. Oral surgery oral medicine oral pathology oral radiology and endodontology, 92, 377-383.
While attempting to extract impacted tooth #16, the tooth is suddenly displaced and is no longer visible or palpable. The patient now has limited mandibular opening. What is the most likely position of tooth #16?
(A) In the maxillary sinus
(B) In the buccal space
(C) In the body of the zygoma
(D) In the infratemporal space
(D) In the infratemporal space
COMSSAT: 2019
Explanation:
Source:
Miloro, M., et. al. (Eds.). (2004). Dentoalveolar surgery in Peterson’s principles of oral and maxillofacial surgery (2nd Ed), (pp. 152). BC Decker Inc.
Berman, S.A. (1992). Basic prinicples of dentoalveolar surgery in principles of oral and maxillofacial surgery. L.J. Peterson, A.T. Indresano, R.D. Marciani, S.M. Roser (Eds.). (pp. 94) Lippincott, PA.
Fonseca, et.al. (2000). Oral and maxillofacial surgery: Anesthesia/dentoalveolar surgery/office management (p.p. 432). Philadelphia, PA: WB Saunders Company.
Patients with a history of oral bisphosphonate usage presenting with asymptomatic exposed bone should:
(A) have the non-vital bone surgically removed.
(B) be observed.
(C) start long term intravenous antibiotics.
(D) undergo hyperbaric oxygen therapy immediately.
(B) be observed.
COMSSAT: 2019
Explanation:
Source:
Miloro, M., et. al. (Eds.). (2004). Dentoalveolar surgery in Peterson’s principles of oral and maxillofacial surgery (2nd Ed), (pp. 152). BC Decker Inc.
Berman, S.A. (1992). Basic prinicples of dentoalveolar surgery in principles of oral and maxillofacial surgery. L.J. Peterson, A.T. Indresano, R.D. Marciani, S.M. Roser (Eds.). (pp. 94) Lippincott, PA.
Fonseca, et.al. (2000). Oral and maxillofacial surgery: Anesthesia/dentoalveolar surgery/office management (p.p. 432). Philadelphia, PA: WB Saunders Company.
