occlusion and periodontal health

Question 1

Whats occlusal trauma?

Answer 1

injury resulting in the tissue changes whithin the periodonal attachment apparatus as a result of occlusal forces

Question 2

traumatic occlusion is classified into what two things?

Answer 2

acute/chronic, primary/secondary occlusal trauma

Question 3

acute trauma

Answer 3

sudden occlusal impact( like biting on olive pit)

Question 4

chronic trauma

Answer 4

develops over time, more difficult to treat.

Question 5

Primary occlusal trauma

Answer 5

injury resulting from tissue changes from excessive occlusal forces applied to a tooth or teeth with normal support( occurs in presence of normal bone levels, attachment levels, and excessive occlusal forces

Question 6

secondary occlusal trauma

Answer 6

injury resulting in tissue changes from normal or excessive occlusal forces applied to a tooth with reduced support( occus in presence of bone loss, attachement loss, and normal/excessive occlusal forces)

Question 7

injury stage of tissue resposne

Answer 7

changes in occlusal forces cause injury. Repair is attempted if forces are diminished, tooth drifts away from forces, or remodeling occurs.

Question 8

injury from slight pressure

Answer 8

resorption of bone, widened periodontal ligament space, blood vessels numerous and reduce in size

Question 9

injury from great pressure

Answer 9

fibers hyalinize, fibroblast injured=>necrosis of ligament, resorption of bone

Question 10

injury from slight tension

Answer 10

PDL fibers elongate, apposition of bone, blood vessels enlarge

Question 11

injury from great tension

Answer 11

widened PDL space, tearing of ligament, hemorrhage

Question 12

Repair from trauma includes

Answer 12

new CT tissue cells and fibers, bone and cementum, Thin bone is reinforced with new bone ( buttressing bone formation)

Question 13

adaptive remodeling stage

Answer 13

thickened PDL with no pocket formation. Peridontium is remodeled which increases tooth mobility.

Question 14

T/F, inflammation inhibits potential for bone regeneration?

Answer 14

T, this is why it needs to be eliminated.

Question 15

When does tooth mobility occur?

Answer 15

during injury stage( injured PDL fibers),

during repair/remodeling( widened PDL space)

Question 16

tooth mobility is not considered pathologic unless it is …..

Answer 16

progressive

Question 17

whats fremitis?

Answer 17

fingers on buccal side of crown, Pt bites down, if you feel movement or vibration the Pt has pathologic toooth migration.

Question 18

occlusal trauma has been researched on ….

Answer 18

human cadaver, animals, human clinical studies

Question 19

what is Glickmans concept he came up with in his research?

Answer 19

spread of plaque is changed if abnormally strong forces are acting on teeth with subgingival plaque,

Question 20

Glickman concept zones

Answer 20

zone of irritation, zone of co-destruction

Question 21

zone of irritation

Answer 21

marginal and interproximal gingiva. This area is not affected by occlusion but can be affected by bacteria. Lesion propagates apically and causes horizonal bone loss( plaque induced)

Question 22

zone of co-destruction

Answer 22

includes PDL, cementum, bone. directly affected by occlusal force. Affected fibers cause inflammation to spread to PDL then to the bone which causes angular bone loss.

Question 23

which fibers seperate the 2 zones?

Answer 23

transseptal and dentoalveolar fibers

Question 24

Animal studies conclusion

Answer 24

if oral hygiene was maintained and inflammation controlled, occlusal trauma resulted in increased mobility and bone density loss but no loss of attachement

Question 25

what was the conclusion of the animal studies?

Answer 25

without inflammation, occlusal trauma does not cause irreversible bone loss or attachment

Question 26

tooth migration definition

Answer 26

when tooth movement is caused by a diseased process

Question 27

tooth migration prevalence in periodontal patients

Answer 27

30.03%-55.8%

Question 28

what are some common causes of tooth migration?

Answer 28

perio disease, bruxism, posterior bite collapse, soft tissue pressure, short dental arches, habits,……..etc