6.3.4 Periodontal Regeneration (Therapy 19 Questions)

8. A flap that may be used to cover exposed root surfaces or cover membranes used in guided tissue regeneration is a

1. Coronally positioned flap* 2. Apically positioned flap 3. Double papilla flap 4. Modified Widman flap

36. What is guided tissue regeneration?

1. Placement of a soft tissue graft to correct a mucogingival problem 2. Placement of a membrane over a bony defect* 3. to increase the amount of attached gingiva 4. Placement of an autograft to treat a bony defect

41. Intrabony defects are classified by the number of bony walls that have been destroyed by ; the more bony walls that remain, the more amenable the defect is to regenerative treatment.

4. The first statement is FALSE, the second is TRUE*

63. In which defect is a procedure least likely to be successful?

1. One walled defect 2. Two walled defect 3. Three walled defect 4. Through and through furcation defect*

254. Bone-fill procedures (new attachment) are most successful in treating

1. trifurcation involvements. 2. deep, two-wall craters. 3. narrow, three-wall defects.* 4. osseous defects with one remaining wall.

281. Which of the following types of periodontal pockets offers the best possibility for bone regeneration?

1. Suprabony pocket 2. One-wall infrabony pocket 3. Two-wall infrabony pocket 4. Three-wall infrabony pocket*

352. Which of the following is the most likely side effect of a fresh, autogenous iliac crest transplant in managing an infrabony pocket?

1. Infection 2. Arthus reaction 3. Root resorption* 4. Delayed hypersensitivity 5. Autoerythrocyte sensitivity

448. A postoperative problem that has been reported to occur with use of fresh hip marrow bone autografts is: . 1. root resorption.* . 2. bone overgrowth to the extent that esthetic problems result. 3. severe infection, resulting in loss of the entire alveolus. 4. loss of the graft and involved teeth due to a massive immune rejection response.

555. The ideal bone graft should do each of the following EXCEPT one. Which one is this EXCEPTION?

A. Induce osteogenesis B. Withstand mechanical forces C. Produce an immunologic response* D. Become replaced by host bone

556. Guided tissue regeneration is most commonly used to treat which of the following Classes of furcations?

A. 1 B. 2* C. 3 D.4

569. A freeze-dried decalcified bone graft taken from a human donor and placed in a periodontal defect in another patient is termed an:

A. allograft.* B. autograft. C. isograft. D. alloplastic graft.

571. Which of the following bone donor grafts has the greatest osteogenic potential?

A. Freeze-dried bone B. Hemopoietic marrow* C. Heterogenous marrow D. Corticocancellous block

126. Dentists often use barrier membranes (Teflon membranes) to treat osseous defects in an attempt to block which of the following?

1. Osseous regeneration 2. Connective tissue 3. The formation of a long .* 4. Coronal migration of periodontal ligament cells.

20. A 50-year-old male presents with deep fibrotic pockets and angular bone loss. The dentist reflects a flap, debrides the two and three walled defects, and performs . Which procedure should the dentist do next?

1. 2. Osseous grafts* 3. Modified Widman flap 4. Apically positioned flap

86. Which of the following characterizes freeze-dried bone?

1. It is usually rejected by the host. 2. It is exfoliated after a short time. 3. It contains cells with osteogenic potential. 4. It is eventually replaced by the host bone.*