lec 4 - surgical procedure for removing impacted teeth

Question 1

5 basic steps that make up the technique?

Answer 1

1. adequate exposure (flaps)
2. bone removal
3. section, purchase points
4. use elevators
5. bone file, saline, suture

Question 2

The ease of removing an impacted tooth depends on its __________?

Answer 2

Accessibility

Question 3

Preferred technique (flap) that is quicker to suture and heals better.

Answer 3

Envelope flap

Question 4

If the surgeon requires greater access to more apical areas of the tooth, the surgeon should consider using what kind of flap?

Answer 4

Three-cornered flap

Question 5

Most commonly used instruments for flap retraction when removing mandibular third molars.

Answer 5

Austin and Minnesota retractors

Question 6

Recommended incision for the maxillary third molar extraction?

Answer 6

Envelope incision

Question 7

The bone on the ________, _________, and ________ aspects, down to the _______ of the impacted tooth should be removed initially. Bone should not removed from the ______ aspect of the mandible because of vital structures.

Answer 7

• Buccal, Distal, Occlusal aspects (BDO)
• Cervical line
• Lingual aspect

Question 8

Examples of burs used in removing overlying bone.

Answer 8

Large round bur #8
Fissure bur #703

Question 9

The bur can be used to remove bone between the tooth and the cortical bone in the cancellous area of bone with a maneuver called _________. This provides access for elevators to gain purchase points.

Answer 9

Ditching

Question 10

This procedure allows portions of the tooth to be removed separately with elevators through the opening provided by bone removal.

Answer 10

Sectioning

Question 11

Most important determinant in sectioning of tooth.

Answer 11

Angulation of tooth

Question 12

Tooth is sectioned _____ of the way towards the lingual aspect.

Answer 12

3/4s towards lingual

Question 13

Impacted teeth elsewhere in the mouth are usually sectioned only at the?

Answer 13

Cervical line

Question 14

Most frequently used elevators in the mandible.

Answer 14

Straight elevator
Cryer elevators
Crane pick elevator

Question 15

Used to remove sectioned roots from their sockets.

Answer 15

Root tip pick

Question 16

In delivery of maxillary 3rd molars, the elevator tip is inserted into the area at the __________, and force is applied to displace the tooth in ________ direction.

Answer 16

• Mesial cervical line
• Distobuccal direction

Question 17

The surgeon should have a finger on the __________ of the maxilla so that if a fracture occur, steps can be taken to salvage the area.

Answer 17

Tuberosity

Question 18

Used to smooth any sharp, rough edges of bone, particularly where an elevator was in bony contact.

Answer 18

Bone file

Question 19

Used to remove all particulate bone chips and debris from the wound.

Answer 19

Irrigation with sterile saline

Question 20

Used to remove any remnants of dental follicle.

Answer 20

Mosquito hemostat

Question 21

Antibiotics such as tetracycline may be delivered in the sockets of lower third molar to help prevent __________?

Answer 21

Osteitis sicca (dry socket)

Question 22

Initial suture should be placed through the attached tissue on the posterior aspect of the _______?

Answer 22

Posterior aspect of 2nd molar
(2-3 sutures)