TB Q 57,61,62,64

Longitudinal studies have noted that all patients should be treated initially with scaling and root planing and that a final decision on the need for periodontal surgery should be made only after a thorough evaluation of the effects of Phase I therapy. The assessment is generally made no less than ________ and sometimes as much as 9 months after the completion of Phase I therapy. -3 to 5 days -12 to 24 hours -1 to 3 months -None of the above

-1 to 3 months

All bony defects are equally responsive to osseous resective surgery. True False

False

The incidence of cervical enamel projections (CEPs) is highest for the maxillary and mandibular first molars. True False

False

Which statement regarding recurrence of gingival enlargement during the healing period is INCORRECT? -It is manifested as a keratinized fibrotic overgrowth. -This is a proliferative vascular inflammatory response. -The condition is a due to local irritation, usually a fragment of calculus. -The condition is corrected by removing the granulation tissue.

It is manifested as a keratinized fibrotic overgrowth.

A Class I furcation lesion (Glickman classification) is suprabony. Therefore the following therapy is recommended for treatment: Root resection Osseous surgery Oral hygiene, scaling, and root planing Bone regenerative therapy

Oral hygiene, scaling, and root planing

The term that describes reshaping the bone without removing tooth-supporting bone is: -Osteoplasty -Ostectomy -Positive architecture -Negative architecture

Osteoplasty

When osseous defects amenable to reconstruction are present, the technique of first choice is: - Apically displaced flap -Modified Widman flap -Sulcular flap -Papilla preservation flap -Undisplaced flap

-Papilla preservation flap

The bone has "negative" architecture if the: -Interdental bone is more apical than the radicular bone - Radicular bone is apical to the interdental bone -Interdental bone is at the same height as the radicular bone -Interdental bone is more coronal than the radicular bone

?look (B) can be mulit ans. interdental more apical than the radicular bone.

The bony architecture is said to be "positive" if the: - Interdental bone is more apical than the radicular bone -Radicular bone is apical to the interdental bone -Interdental bone is at the same height as the radicular bone -Interdental bone is more coronal than the radicular bone

?look(a) can be mult ans. the radicular bone is apical to the interdental bone.

The following findings may indicate the need for surgical therapy: -Irregular bony contours or deep craters -Grade II or III furcation involvement -Persistent suppuration after Phase I therapy -Any degree of tooth mobility -A and B

A and B (-Irregular bony contours or deep craters -Grade II or III furcation involvement)

Surgical pocket therapy can be directed toward: Access surgery to ensure the removal of irritants from the tooth surface Elimination or reduction of the depth of the periodontal pocket A and B None of the above

A and B (Access surgery to ensure the removal of irritants from the tooth surface Elimination or reduction of the depth of the periodontal pocket)

Selection of scaling and root planing or surgical resection in the treatment of chronic inflammatory enlargement depends on: -Size of the enlargement -Age of the patient -Character of the tissue -A and C

A and C (Size of the enlargement/ Character of the tissue)

The following instruments can be used for respective surgery: - Drills - Piezoelectric surgical tips - Rotary instruments - All of the above

All of the above (- Drills - Piezoelectric surgical tips - Rotary instruments)

The following factors favor utilization of the periodontal flap technique over gingivectomy EXCEPT: -Large areas of enlargement (>6 teeth) -Presence of osseous defects -Abundance of keratinized tissue -Intended primary closure of the surgical site

Abundance of keratinized tissue

Gingival disease in pregnancy: -Should be treated as soon as detected -Should be treated only after the third month of pregnancy -Should be treated only if it causes pain or interferes with mastication or esthetics -Should be treated only after delivery of the baby

Should be treated as soon as detected

Treatment protocol for gingival enlargement in chronic leukemia does NOT include: -Scaling and root planing in stages -Oral hygiene instruction for plaque control -Surgical excision -Chlorhexidine mouthwashes -Antibiotics the evening before and for 48 hours after treatment

Surgical excision

The most common root resection involves which root? The mesiobuccal root of the maxillary first molar The distobuccal root of the maxillary second molar The mesiobuccal root of the maxillary second molar The distobuccal root of the maxillary first molar

The distobuccal root of the maxillary first molar

Hemisection is most likely to be performed on mandibular molars with buccal and lingual Class II or III furcation involvements. True False

True

Much of the bone removal in subtractive osseous surgery is of nonsupporting bone. True False

True

Root resection may be indicated for multirooted teeth with grades II to IV (Glickman classification) furcation involvement. True False

True

The root trunk is defined as that portion of the root from the cementoenamel junction to the opening of the furcation lesion. True False

True

What is the most common type of bony defect found in patients with periodontitis? -One-walled defect -Two-walled defect -Three-walled defect -Four-walled defect

Two-walled defect

In the Glickman classification of furcation lesions, all four classes (grades I, II, III, and IV) can be readily seen with a radiograph. True False

false

In the healthy periodontium, the position of the bony margin mimics the contour of the cementoenamel junction. True False

true

Osseous surgery can be subtractive or additive. True False

true

The most important clinical parameter on which surgical decisions for pocket therapy can be partially based is: -Pocket -Level of attachments -Bleeding during probing and/or spontaneously - Width of attached gingiva -A and C

-Level of attachments

The first choice for treatment of the maxillary anterior teeth is scaling and root planing, and the second choice is the apically displaced flap. -Both statements are true. -Both statements are false. -The first statement is true, and the second is false. -The first statement is false, and the second is true.

-The first statement is true, and the second is false.

Recurrence of chronic inflammatory enlargement immediately after treatment indicates that: Local irritants have not been completely removed Local conditions such as food impaction and overhanging margins may be involved Patient exhibits inadequate plaque control All of the above

All of the above (Local irritants have not been completely removed Local conditions such as food impaction and overhanging margins may be involved Patient exhibits inadequate plaque control)

The clinician must gain indirect knowledge of the bony contours before surgery by: -Soft tissue palpation -Radiographic assessment -Transgingival probing -All of the above

All of the above (Soft tissue palpation Radiographic assessment Transgingival probing)

Which of the following anatomic factors can contribute to attachment loss in the furcation area? Dens invaginatus Dens in dente Cusp of Carabelli Cervical enamel projection

Cervical enamel projection

The effectiveness of periodontal therapy is predicated on success in ________ eliminating calculus, plaque, and diseased cementum from the tooth surface. -Partially -Completely -None of the above

Completely

Drug substitution for which medication causing drug-induced gingival enlargement is more limited? -Phenytoin -Nifedipine -Cyclosporine -Diltiazem

Cyclosporine

After Phase I therapy, the inflammatory changes in the pocket wall subside, rendering the pocket _______ and reducing its depth. -Inactive -Active -Eliminated

Inactive

In treatment planning for drug-induced gingival enlargement, one should FIRST consider: -Scaling and root planing -Discontinuing the medication -Performing a gingivectomy -Performing an apically positioned flap

Performing a gingivectomy

Idiopathic gingival enlargement: -Recurs after surgical resection only if all irritants have not been removed -Recurs after surgical resection even if all irritants have been removed -Does not recur after complete surgical resection -Does not recur if surgical treatment is complemented by application of escharotic drugs

Recurs after surgical resection even if all irritants have been removed

Furcation defects with deep two-walled or significant three-walled components may be suitable for what type of procedure? Hemisection Root resection/regeneration Osseous surgery

Root resection/regeneration