Perio Wound Healing Flashcards
Epithelium is replaced how often?
4-7 days.
Is tissue regeneration or repair more likely?
Repair
Formation of new cementum, PDL fibers, and alveolar bone.
Regeneration
Replacement tissues DO NOT REPLICATE the tissues that were lost.
May have an attachment with a long JE.
NO formation of new cementum, PDL, or alveolar bone.
Repair
As we get attachment loss, we also get loss of these.
Bone and cementum
Clean incision where edges are approximated with sutures.
Primary intention
Occurs on day 1 of primary intention.
- Neutrophils
- Epithelial cells
- Angiogenesis starts
Day 3 of primary intention
- Macrophages
- Endothelial cells
- Collagen fibers present
- Granulation tissue starts
Day 5 of primary intention
- Collagen bridge forms
- Angiogenesis peaks
- Granulation tissue fills the incisional space
Increase in fibroblasts and collagen accumulation in this part of primary intention.
Week 2
Point of Primary intention:
- Intact epithelium.
- Absence of inflammation
- Tissue is still remodeling
1 month
Wound edges are not approximated, causing a large tissue defect.
Secondary intention
Greater inflammatory rxn, more granulation tissue, more fibrin and necrotic debris must be removed.
Secondary intention
Scar formation with contraction (does not occur with the attached gingiva bc it’s so close to the bone).
Secondary intention
Intentional removal of the pocket epithelium.
Curettage
Formation of a new epithelial lining along the sulcular wall with a resolution of inflammation.
Healing
Excision of the unattached gingiva.
Gingivectomy
The epithelium in this surgical procedure is derived from wound margins and migrate over the wound area.
Secondary intention
Keratinized or connective tissue is transplanted from a donor site to a prepared recipient site.
Gingival graft
Blood supply of a graft
Comes from the recipient site (“plasmotic circulation”)
By what day does the blood supply from the recipient site anastomose to the gingival graft?
Day 4
These are used to increase the width of the keratinized gingiva.
Gingival grafts
Vascular supply is completely severed from the donor tissue and must be nourished by diffusion from the vessels of the underlying tissue to survive.
Gingival graft
Neovasculature in a graft is fairly extensive by _____.
one week
