Oral Surgery Exam 2 questions with
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answers
A tooth that fails to fully erupt into the dental arch within an
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expected amount of time - CORRECT ANSWERS ✔✔Impacted
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tooth
Teeth that are most commonly impacted - CORRECT ANSWERS
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✔✔3rd molars |\
2nd most commonly impacted teeth - CORRECT ANSWERS
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✔✔Maxillary canines |\
3rd most commonly impacted teeth - CORRECT ANSWERS
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✔✔Mandibular premolars |\
4th most commonly impacted teeth - CORRECT ANSWERS
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✔✔Mandibular canines |\
Most common reason for extracting wisdom teeth - CORRECT
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ANSWERS ✔✔Prophylactic removal |\ |\
Prophylactic removal of third molars should occur when the roots
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are ______________ formed, which corresponds to between
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____________ years old - CORRECT ANSWERS ✔✔1/3-1/2 formed;
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17-20 years old |\ |\
,Pockets depths of ______ distal to the second molars are
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indications of need for extraction of third molars - CORRECT
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ANSWERS ✔✔PD 4 or greater |\ |\ |\ |\
A small flap of tissue which may cover an erupting or partially
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erupted molar - CORRECT ANSWERS ✔✔Operculum
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Removal of a small flap of tissue which may cover an erupting or
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partially erupted molar that is not frequently performed due to
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high rate of recurrence - CORRECT ANSWERS ✔✔Operculectomy
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If the width of a dental follicle is ______ on the x-ray, it might be a
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good idea to refer to a pathologist and possibly extract the
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involved third molar - CORRECT ANSWERS ✔✔3-4 mm
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Complications increase for deeply impacted third molars with no |\ |\ |\ |\ |\ |\ |\ |\ |\
disease after this age - CORRECT ANSWERS ✔✔25 years old
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Radiograph that is most useful when deciding whether to extract
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impacted wisdom teeth - CORRECT ANSWERS ✔✔Panoramic
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radiograph
The most common angulation for an impacted mandibular third
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molar is __________ and it is found in ____% of cases - CORRECT
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ANSWERS ✔✔Mesio-angular; 43% |\ |\
, The most difficult angulation for the extraction of an impacted
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mandibular third molar is ________ and it is found in ___% of cases
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- CORRECT ANSWERS ✔✔Disto-angular; 6%
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Relationship of the impacted third molar with the anterior ramus
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(Pell and Gregory) where the entire MD diameter of the crown is
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completely anterior to the ramus - CORRECT ANSWERS ✔✔Class
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1
Relationship of the impacted third molar with the anterior ramus
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(Pell and Gregory) where one half of the MD diameter of the
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crown is covered by the ramus - CORRECT ANSWERS ✔✔Class 2
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Relationship of the impacted third molar with the anterior ramus
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(Pell and Gregory) where the MD diameter of the crown is
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completely within the ramus - CORRECT ANSWERS ✔✔Class 3
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Most common classification with regards to the relationship of
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the anterior ramus to the position of the impacted third molar -
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CORRECT ANSWERS ✔✔Pell and Gregory |\ |\ |\ |\
Relationship to the occlusal plane (Pell and Gregory) where the
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impacted third molar is level with the occlusal surface of the
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second molar - CORRECT ANSWERS ✔✔Class A
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Relationship to the occlusal plane (Pell and Gregory) where the
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impacted third molar is between the occlusal plane and cervical
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line of the second molar - CORRECT ANSWERS ✔✔Class B
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answers
A tooth that fails to fully erupt into the dental arch within an
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expected amount of time - CORRECT ANSWERS ✔✔Impacted
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tooth
Teeth that are most commonly impacted - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔3rd molars |\
2nd most commonly impacted teeth - CORRECT ANSWERS
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✔✔Maxillary canines |\
3rd most commonly impacted teeth - CORRECT ANSWERS
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✔✔Mandibular premolars |\
4th most commonly impacted teeth - CORRECT ANSWERS
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✔✔Mandibular canines |\
Most common reason for extracting wisdom teeth - CORRECT
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ANSWERS ✔✔Prophylactic removal |\ |\
Prophylactic removal of third molars should occur when the roots
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are ______________ formed, which corresponds to between
|\ |\ |\ |\ |\ |\ |\
____________ years old - CORRECT ANSWERS ✔✔1/3-1/2 formed;
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17-20 years old |\ |\
,Pockets depths of ______ distal to the second molars are
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indications of need for extraction of third molars - CORRECT
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ANSWERS ✔✔PD 4 or greater |\ |\ |\ |\
A small flap of tissue which may cover an erupting or partially
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erupted molar - CORRECT ANSWERS ✔✔Operculum
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Removal of a small flap of tissue which may cover an erupting or
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
partially erupted molar that is not frequently performed due to
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
high rate of recurrence - CORRECT ANSWERS ✔✔Operculectomy
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If the width of a dental follicle is ______ on the x-ray, it might be a
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
good idea to refer to a pathologist and possibly extract the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
involved third molar - CORRECT ANSWERS ✔✔3-4 mm
|\ |\ |\ |\ |\ |\ |\
Complications increase for deeply impacted third molars with no |\ |\ |\ |\ |\ |\ |\ |\ |\
disease after this age - CORRECT ANSWERS ✔✔25 years old
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Radiograph that is most useful when deciding whether to extract
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
impacted wisdom teeth - CORRECT ANSWERS ✔✔Panoramic
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radiograph
The most common angulation for an impacted mandibular third
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molar is __________ and it is found in ____% of cases - CORRECT
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ANSWERS ✔✔Mesio-angular; 43% |\ |\
, The most difficult angulation for the extraction of an impacted
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mandibular third molar is ________ and it is found in ___% of cases
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- CORRECT ANSWERS ✔✔Disto-angular; 6%
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Relationship of the impacted third molar with the anterior ramus
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
(Pell and Gregory) where the entire MD diameter of the crown is
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
completely anterior to the ramus - CORRECT ANSWERS ✔✔Class
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1
Relationship of the impacted third molar with the anterior ramus
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(Pell and Gregory) where one half of the MD diameter of the
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crown is covered by the ramus - CORRECT ANSWERS ✔✔Class 2
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Relationship of the impacted third molar with the anterior ramus
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(Pell and Gregory) where the MD diameter of the crown is
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completely within the ramus - CORRECT ANSWERS ✔✔Class 3
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Most common classification with regards to the relationship of
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the anterior ramus to the position of the impacted third molar -
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CORRECT ANSWERS ✔✔Pell and Gregory |\ |\ |\ |\
Relationship to the occlusal plane (Pell and Gregory) where the
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impacted third molar is level with the occlusal surface of the
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second molar - CORRECT ANSWERS ✔✔Class A
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Relationship to the occlusal plane (Pell and Gregory) where the
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impacted third molar is between the occlusal plane and cervical
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line of the second molar - CORRECT ANSWERS ✔✔Class B
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