Occlusal Trauma

Question 1

The narrowest area of the keratinized Gingiva

Answer 1

Mandibular First Pre-Molar

Question 2

The injury phase toward the occlusal force

Answer 2

shows an increase in areas of resorption and a decrease in bone formation

Question 3

The repair phase toward occlusal force

Answer 3

demonstrates decreased resorption and increased bone formation.

Question 4

Adaptive remodeling phase of the periodontium

Answer 4

resorption and formation of bone return to normal

Question 5

Pathologic migration is also an early sign of

Answer 5

Localized aggressive periodontitis

Question 6

The thinnest area of keratinized Gingiva in children

Answer 6

Cuspid. Whereas it is greater on incisors

Question 7

Migration in anterior teeth can result in

Answer 7

Extrusion

Question 8

Drifting Vs Migration

Answer 8

Drifting doesn’t result in periodontal destruction.

Question 9

Drifting occurs in a mesial direction EXCEPT

Answer 9

Premolars

Question 10

Two Signs of Occlusal Trauma

Answer 10

1- Widened PDL

2-Tooth Mobility

Question 11

An interdental crater

Answer 11

A bone defect with a concavity in the crestal bone.

Question 12

Angular osseous defects cannot form in thin facial or lingual alveolar plates.

Answer 12

Because they have little or no cancellous bone between the outer and inner cortical layers ( Carranza, 2002).

Question 13

Thinning of the periodontal ligament, atrophy of the fibers, osteoporosis of the alveolar bone, and reduction in bone height can be caused by

Answer 13

Insufficient occlusal force

Question 14

Hypofunction can result from

Answer 14

Open-bite relationship
The absence of functional antagonists
Unilateral chewing habits

Question 15

Glickman has called the zone of co-destruction when

Answer 15

Inflammation extends from the gingiva into the supporting periodontal tissues as gingivitis becomes periodontitis. Plaque-induced inflammation enters the zone influenced by occlusion force.

Question 16

When trauma from occlusion is eliminated, a substantial reversal of bone loss occurs, EXCEPT

Answer 16

In the presence of periodontitis, because inflammation inhibits the potential for bone regeneration

Question 17

In the absence of inflammation, the response to trauma from occlusion.

Answer 17

Is limited to adaptation to the increased forces

Question 18

The presence of inflammation, the changes in the shape of the alveolar crest may be conducive to

Answer 18

Angular bone loss and existing pockets may become intrabony. (theory)

Question 19

Increased mobility of traumatically loosened teeth

Answer 19

may have a pumping effect on plaque metabolites, increasing their diffusion.

Question 20

Radiographic signs of trauma from occlusion may include the following:

Answer 20

1. Increased width of the periodontal space
2. Thickening of the lamina dura along the lateral aspect of the root.
3. A vertical destruction of the interdental septum.
4. Radiolucence and condensation of the alveolar bone. 5. Root resorption.

Question 21

The disturbed proximal contact relationships lead to

Answer 21

I. Food impaction
II. Gingival inflammation,
III. Pocket formation, followed by bone loss
IV. Tooth mobility.

Question 22

Drifting of teeth

Answer 22

I. Pressure from the tongue may cause drifting of the teeth in the absence of periodontal disease.
II. Trauma from occlusion may cause a shift in tooth position
III.Pressure from the granulation tissue of periodontal pockets

Question 23

Flexure due to occlusal forces

Answer 23

Abfraction