Principles of Complicated exodontia Flashcards
- Also called the “Open Technique”
- Used when greater access is necessary to safely remove tooth or remaining roots
- Also used when recontouring and smoothing bone after multiple extractions
Surgical extraction
A section of soft tissue that:
• Outlined by a surgical incision
• Carries its own blood supply
• Allows surgical access to underlying tissues
• Can be replaced in its original position
• Can be maintained with sutures
• Can be used by not only oral surgical procedures, but also periodontal and endodontic
procedures
Flap
What is the main indication for a flap?
Allows surgical access to underlying tissues
Base should be _______ than the free margin
• Prevents ischemic necrosis
broader
• AP length extends two teeth anterior and one tooth posterior
Envelope flaps:
• AP length extends one tooth anterior and posterior
Releasing incision flaps:
Incisions:
• Must be placed over intact bone
• Must be _____ thickness, through mucosa, submucosa, and periosteum
• Must be placed 6-8 mm away from surgically created bone defect
• If not the incision line will collapse into defect and possibly cause a dehiscence
• Should avoid injury to local vital structures
full
Incisions:
• Must be placed over intact bone
• Must be full thickness, through mucosa, submucosa, and periosteum
• Must be placed ____ mm away from surgically created bone defect
• If not the incision line will collapse into defect and possibly cause a dehiscence
• Should avoid injury to local vital structures
6-8
\_\_\_\_ THICKNESS • Contained all three layers of tissue from surface down to bone • Mucosa • Submucosal tissues • Periosteum
FULL
\_\_\_\_\_ THICKNESS • Contains only superficial two layers • Mucosa • Submucosal tissues • Periosteum left attached to bone • Used for vestibuloplasty procedures
SPLIT
- Most common incision/flap design
- Incision in gingival sulcus to facial aspect of crown, making sure to contact crestal bone
- Likely will require to incise the interdental papilla, again making sure to contact crestal bone
- Two teeth anterior and one tooth posterior
Envelope Flap
- Has one releasing incision
- Used for apical access and posterior areas
- One tooth anterior and one tooth posterior
Three Corner Flap
• Has two releasing incisions • Rarely used • Can be utilized if a flap tear is anticipated or can not achieve apical visualization • Extremely important to have: • Base wider than crestal aspect • Base length > vertical release length
Four Corner Flap
- Used for palatal torus
- Avoid greater palatine arteries
- Difficult to close
Y Flap or Double Y Flap
• Good choice for coverage of Oro-antral
communications
• Based off the greater palatine artery
Palatal Pedicle Flap
