lec 4 - surgical procedure for removing impacted teeth Flashcards
5 basic steps that make up the technique?
- adequate exposure (flaps)
- bone removal
- section, purchase points
- use elevators
- bone file, saline, suture
The ease of removing an impacted tooth depends on its __________?
Accessibility
Preferred technique (flap) that is quicker to suture and heals better.
Envelope flap
If the surgeon requires greater access to more apical areas of the tooth, the surgeon should consider using what kind of flap?
Three-cornered flap
Most commonly used instruments for flap retraction when removing mandibular third molars.
Austin and Minnesota retractors
Recommended incision for the maxillary third molar extraction?
Envelope incision
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.
- Buccal, Distal, Occlusal aspects (BDO)
- Cervical line
- Lingual aspect
Examples of burs used in removing overlying bone.
Large round bur #8
Fissure bur #703
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.
Ditching
This procedure allows portions of the tooth to be removed separately with elevators through the opening provided by bone removal.
Sectioning
Most important determinant in sectioning of tooth.
Angulation of tooth
Tooth is sectioned _____ of the way towards the lingual aspect.
3/4s towards lingual
Impacted teeth elsewhere in the mouth are usually sectioned only at the?
Cervical line
Most frequently used elevators in the mandible.
Straight elevator
Cryer elevators
Crane pick elevator
Used to remove sectioned roots from their sockets.
Root tip pick
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.
- Mesial cervical line
- Distobuccal direction
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.
Tuberosity
Used to smooth any sharp, rough edges of bone, particularly where an elevator was in bony contact.
Bone file
Used to remove all particulate bone chips and debris from the wound.
Irrigation with sterile saline
Used to remove any remnants of dental follicle.
Mosquito hemostat
Antibiotics such as tetracycline may be delivered in the sockets of lower third molar to help prevent __________?
Osteitis sicca (dry socket)
Initial suture should be placed through the attached tissue on the posterior aspect of the _______?
Posterior aspect of 2nd molar
(2-3 sutures)
