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Wound Healing Questions and Answers

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Wound Healing Questions and Answers 6.5 Wound Healing (Therapy 19 Questions) 59. The primary reason for the failure of a gingival graft is: 1. Infection 2. Edema 3. Epithelial slough 4. Disruption of vascular supply* 289. After placing a free gingival graft, the graft epithelium undergoes which of the following alterations? 1. Dysplasia 2. Degeneration* 3. Proliferation 4. Orthokeratinization 5. Formation of keratohyalin granules 332. In some surgical procedures, it is necessary to leave interradicular bone exposed. This usually results in 1. exposure of the furcation. 2. bone loss of no clinical consequence.* 3. loss of strategic bone over root surfaces. 4. coverage of the exposed bone by alveolar mucosa. 353. Fibroblasts in a healing wound contain large quantities of which of the following cell parts? 1. Nucleoli 2. Rough endoplasmic reticula* 3. Smooth endoplasmic reticula 4. Free"nonmembrane-bound ribosomes 356. Which of the following is least likely to occur after root planing during a flap procedure? 1. Deposition of acellular cementum* 2. Adhesion of junctional epithelium 3. Formation of collagen fibers parallel to the long axis of the root 4. Linkage of newly formed collagen fibrils and fibrils retained at and attached to the root surface 388. A lateral sliding flap is placed over a root surface that has been denuded for six years. Which of the following tissue relationships is most likely to occur? 1. Periodontal ligament fibers inserted into dentin. 2. Periodontal ligament fibers inserted into new cementum. 3. Epithelium adjacent to the previously denuded root surface.* 4. Coadaptation of old fibers remaining in denuded cementum and new gingival fibers. 5. Coadaptation of old fibers remaining in denuded cementum and new periodontal ligament fibers. 449. Deep periodontal pockets are often treated by access flap. Successful cases result in reduction of pocket depth, even if there is no change in the position of gingival margins. In these cases, the reduced pocket depth most likely results from 1. rekeratinization of pocket epithelium. 2. formation of a long, junctional epithelium.* 3. formation of new bone, cementum and periodontal ligament. 4. formation of new collagen fibers that attach the gingiva to root surfaces. 476. Which of the following are likely to occur if marginal bone over a facial root surface is left exposed during healing? (a) Healing will be delayed. (b) The site will heal with residual pockets. (c) The gingival margin will recede. (d) After healing, resultant tissue will be nonkeratinized. (e) The bone will be subjected to more resorption than if it had been covered by the flap. 3. (a), (c) and (e)* 516. The soft tissue-tooth interface that forms most frequently after flap surgery in an area previously denuded by inflammatory periodontal disease is a 1. collagen adhesion. 2. reattachment by scar. 3. long junctional epithelium.* 4. connective tissue attachment. 520. At the one-week postoperative visit, the epithelium of a free gingival graft has been lost. This finding suggests that 1. the recipient bed was mobile. 2. donor tissue was too thin. 3. the graft was incorrectly sutured. 4. bone was exposed at the recipient site. 5. none of the above.* 563. After a free gingival graft, the primary source of nutrition for the graft during the first 24 hours is the A. primary vascular anastomosis. B. residual nutrients within the graft. C. diffusion of nutrients from the underlying connective tissue.* D. diffusion of nutrients from adjacent vessels of the periodontal ligament. Failure of free gingival graft Movement of the graft Interruption of blood supply. *Description of flap for 3rd molar extraction leaving connective tissue fibers on the root and than asked the type of healing? Reattachment (vs. New Attachment, Regeneration,etc.) Healing following periodontal flap surgery usually via: Repair with a long junctional epithelium attachment Rate of epithelial cell migration in healing: About 1 mm per day Epithelial cells migrate over connective tissue at a rate of: *a. 0.5-1.0 mm/day *The effects of DFDBA (demineralized freeze-dried bone allograft) bone graft comes mainly from: BMP (bone morphogenic proteins) .
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