perio.3.02 perio response to occlusion

Question 1

What happens when you take codeine?

Answer 1

I get super sick to my stomach.

Question 2

How important is an allergy to codiene?

Answer 2

Important enough that we should absolutely ask about it.

Question 3

What is co-destruction theory with respect to occlusal trauma?

Answer 3

Theory that occlusal trauma may be a co-destructive factor that ALTERS the severity and pattern of inflammatory disease

Question 4

At what point does can gingivitis clearly be described as periodontitis?

Answer 4

When the inflammation extends into supporting periodontal tissues.

Question 5

What tissues must be involved for plaque-induced inflammation to be able to be influenced by occlusion?

Answer 5

Supporting perio tissues

Question 6

When are excessive forces purposely exerted on teeth?

Answer 6

Orthodontics

Question 7

As forces are exerted on the crown, bone density will increase until…:

Answer 7

… the force EXCEEDS the adaptive capacity of the periodontal unit

Question 8

Greater pressure exerted on a tooth leads to a(n) _______ blood flow.

Answer 8

decreased

Question 9

In response to excess forces, which “force regions” are responsible for tooth movement through apposition and resorption of bone?

Answer 9

Bone resorption -> regions of compression Bone apposition -> regions of tension

Question 10

Define physiologic occlusion.

Answer 10

Occlusion in harmony with the functions of the masticatory system

Question 11

Intercuspal position is a synonym for what occlusion type?

Answer 11

Centric relation (centric occlusion in her slide)

Question 12

_____trusion is a working movement.

Answer 12

Laterotrusion

Question 13

_____trusive side is the balancing or non-working side.

Answer 13

Mediotrusive

Question 14

Define occlusal trauma:

Answer 14

An injury to the periodontal attachment apparatus as a result of excessive occlusal forces.

Question 15

Does occlusal trauma refer to the tissue injury or to the occlusal force?

Answer 15

It refers to the tissue injury, which was caused by the occlusal force

Question 16

Principle fibers of the PDL are best able to accommodate forces along the ____________ of the tooth.

Answer 16

Long axis

Question 17

Occlusal forces not directed along the long axis of the tooth can be either ________ (horizontal) or ________ (rotational) forces.

Answer 17

Lateral -> horizontal Torque -> rotational

Question 18

How do the PDL and alveolar bone respond to an increased MAGNITUDE of force (still within the adaptive range)?

Answer 18

PDL space will WIDEN to accommodate the force (done by inc. number and width of fibers). Alveolar bone will INCREASE in density.

Question 19

Which does more damage to a tooth, constant pressure or intermittent forces?

Answer 19

Constant pressure is the worst. The more frequent the intermittent forces become, the more injury they will cause.

Question 20

What are the 3 stages of adaptive response to occlusal trauma?

Answer 20

Stage I - Injury from excessive occlusal forces Stage II - Repair (only if force is diminished for any reason, i.e. tooth drifts away from opposing force) Stage III - Adaptive Remodeling (only applies if repair cannot keep pace with destruction; widens the PDL, leads to possible angular defects and loosening of tooth. **NO POCKETS** created)

Question 21

Which stage of the adaptive response to occlusal trauma is responsible for PDL widening?

Answer 21

Stage III - Adaptive Remodeling

Question 22

Can adaptive remodeling lead to pocket formation?

Answer 22

No, pockets are not formed in adaptive modeling

Question 23

Define primary occlusal trauma.

Answer 23

Excessive force applied to a normal periodontium.

Question 24

Define secondary occlusal trauma.

Answer 24

Normal to excessive forces placed on a weakened periodontium. (picture example is bone loss giving less support or CAL doing the same)

Question 25

When trauma from occlusion is the primary etiologic factor in periodontal destruction, how is inflammation involved?

Answer 25

The trauma was caused from occlusion, and not from inflammation induced by plaque accumulation. Because of this, we see perio changes without causing any inflammation.

Question 26

Are perio pockets formed in primary or secondary occlusal trauma?

Answer 26

Secondary

Question 27

In secondary, what causes previously well-tolerated occlusal forces to become traumatic?

Answer 27

Perio disease reduce attachment and alters leverage of previous forces.

Question 28

How do clenching and bruxism differ in their associations with mobility and tooth wear?

Answer 28

Clenching is a more static vertical force. Associated with more mobility and less tooth wear than bruxism. Bruxism is a more active lateral movement of the teeth under pressure. Associated with more tooth wear and less mobility than clenching.

Question 29

What is fremitus?

Answer 29

Functional mobility that can be detected on vertical or lateral jaw movement. Perhaps the most important clinical sign of occlusal trauma.

Question 30

Occlusal trauma alone leads to:

Answer 30

A wider PDL space

Question 31

Inflammation alone in the periodontium leads to:

Answer 31

Tissue destruction

Question 32

Inflammation combined with occlusal trauma in the periodontium leads to:

Answer 32

A rapid loss of attachment and rapid bone loss.

Question 33

What is the most common treatment for secondary occlusal trauma?

Answer 33

Splints

Question 34

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Answer 34

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