Flashcards in Surgery Deck (32)
Any surgical procedure used to treat periodontal disease or to modify the morphology of the periodontium is called what?
What is the goal of periodontal surgery?
restore health and function to the periodontium and improve prognosis
Which surgical procedure may be used to correct soft tissue defects affecting the cleans ability of the distal side of the most posterior molar?
Removal of gingival tissue is referred to as?
Gingivectomy (large amount) or gingivoplasty (small amount)
How fast does gingival tissue typically grow back?
1 mm per day (on both sides, 4 mm grows in 2 days)
Osseous recontouring is performed to correct what?
Osseous defects or deformities
How much will the bone resorb/remodel simply by reflecting back the periosteum?
At what temperature does bone die?
Above 42 degrees celsius
What are the three main regenerative procedures?
1-Guided Tissue Regeneration
2-Ridge Augmentation Procedures
What are 5 examples of corrective mucogingival defect surgeries?
1-Apically positioned flaps
3-Free gingival grafts
4-Connective tissue grafts
Which biotype is more likely to have recession?
*Thick biotype resists recession more
Adequate plaque control must happen before what?
Incisions where the edges come back together when sutures are called what?
*secondary intention-edges do not come all the way together
Which type of incision preserves as much tissue as possible?
As a general rule what are the thicknesses of intrasulcular, junctional epithelium, and CT attachment areas (biological width)?
1 mm each, making 3 mm for total biological width
Where is the connective tissue taken from for connective tissue grafts?
Typically the roof of the mouth
Extrasulcular incisions are made using what?
What is the average attached gingiva width on the maxilla for incisors and premolars?
-incisor: 3.5-4.4 mm
-premolar: 1.9 mm
What is the average attached gingiva width on the mandible for incisors and premolars?
-incisor: 3.3-3.9 mm
-premolar: 1.8 mm
What incision should be made if the procedure would involve the need to remove diseased epithelium and apically positioning the flap?
A conventional gingivectomy is done with what type of incision?
External bevel incision
*goal is to remove excess tissue without raising a flap
What are the two types of flaps based on thickness?
-Full Thickness flap
-Partial thickness flap
Which flap is also known as a mucoperiosteal flap because it includes the periosteum, uses an elevator to make a blunt dissection, allows access to bone, is less technique sensitive and may have crestal resorption up to 1 mm?
Full thickness flap
Which flap is also known as a split thickness flap, leave periosteum intact, uses a sharp blade for dissection, is technique sensitive, can be sutures to the periosteum but does not allow full access to the bone?
Partial thickness flap
Which flap has no vertical releasing incisions, is esthetically more predictable, is used when anatomic limitations are present, is helpful when primary closure is necessary and usually is full thickness?
Which flap has one or two vertical releasing incisions, access flexibility, may be repositioned apical/coronally easily, can be an esthetic nightmare, and extends beyond the MGJ?
Released flap (relaxed, pedicle)
*Placed at line angles and should avoid papilla and midcervical areas
What are 4 indications for crown lengthening?
1-Decayed or fractured below gingival margin
2-Excessive wear on dentition and clinical crown is inadequate
3-Unesthetic gingival margin (gummy smile)
4-Function (inadequate space)
What are periodontal dressings used for?
-May be useful in protecting the tissue
-Comfort of the patient
*no real curative properties
What are 4 types of Periodontal dressings?
1-Zinc oxide-Eugenol (wondr pak, may cause allergic rxn)
2-Noneugenol (coe-pak, most common, comes in two tubes)
3-Cyanoacrylates (Krazy glue)