Chapter 29 Flashcards
What are the indications for periodontal surgery?
- To improve access for improved periodontal instrumentation
- To reduce pocket depth
- Provide access to perio osseous defects
- Resect or remove tissue
- Regenerate periodontium lost due to disease
- Graft bone or bone-stimulating materials
- Improve appearance of the periodontium
- Enhance prosthetic dentistry
- Place dental implants
Possible contraindications for dental surgery
- Uncontrolled diabetes/hypertension
- Recent cardiovascular event
- Bleeding disorders
- Kidney dialysis
- Radiation to the jaw
- Total non-compliance with self-care
- Pts at high risk for caries
- Pts w/ unrealistic expectations of surgical outcomes
What ar ethe possible outcomes of periodontal surgery?
- Healing by long junctional epithelium: LJE attaches to the tooth along the root surface
- Healing by tissue shrinkage: Recession of gingiva apically
- Healing by regeneration: New bone, CT and cementum
Terminology associated with wound healing
- Repair
- Reattachment
- New attachment
- Regeneration
Terminology associated with degree of wound closure
Primary intention
Secondary intention
Tertiary intention
What is repair?
Healing of a wound by formation of tissues that do not fully restore the original architecture or original function of the body part
- Scar tissue
- Healing by LJE
- No regeneration of new perio tissues
What is reattachment?
Healing of a periodontal wound by reunion of the connective tissue and roots where they were separated by a surgical incision or injury but not disease
What is new attachment?
- The union of a pathologically exposed root w/ connective tissue or epithelium
- Only in area damaged by disease
- Newly attached epithelium and CT
What is regeneration?
- Complete restoration
- Formation of: new cementum, functional PDL and AB
- Possible but not predictable
What is primary intention?
Close approximation of margins
What is secondary intention?
Margins not in close contact:
- granulation tissue followed by epithelial migration over wound
What is tertiary intention?
Left open to clear potential infection
How are periodontal flaps classified?
- Based on AB exposure
- Based on location of flap margin
What are the two classifications of periodontal flaps based on AB exposure?
Full-thickness flap
Partial-thickness flap
What are the classifications of periodontal flaps based on location of flap margin?
Nondisplaced flap (replaced in original position)
Displaced flap:
- Apical
- Coronal
- Lateral