Exam 2; Trauma from Occlusion-Natural Teeth

Question 1

Trauma from occlusion is an injury to what as the result of excessive occlusal forces

Answer 1

attachment apparatus

Question 2

What is primary occlusal trauma

Answer 2

excessive force

normal periodontium

Question 3

What is secondary occlusal trauma

Answer 3

normal or excessive forces

applied to a weak periodontium

Question 4

What are some clinical signs of occlusal trauma

Answer 4

progressive tooth mobility
teeth moving teeth; fremitis, functional mobility
pathological migration
infrabony pockets 
buttressing bone

Question 5

What are two possible radiographic signs of occlusal trauma

Answer 5

widened PDL space and/or thickened lamina dura

trabecular bone; hypo or hyper function

Question 6

This condition seen on radiographs, may not be due to occlusal trauma, but do to tooth and bony anatomy and inflammatory periodontal disease

Answer 6

angular bone loss and furcations

Question 7

What is the co-destruction theory

Answer 7

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

Question 8

What is the advancing plaque front theory

Answer 8

occlusal trauma has no role in the severity and pattern of inflammatory periodontal disease progression

Question 9

In trauma from occlusion, crushing of tooth against bone causes what

Answer 9

injury to the periodontal ligament at sites of pressure and tension; tipping

Question 10

What are the results of TFO without periodontitis

Answer 10

injury results in acute inflammation
PDL collagen destruction
cementum resorption
bone loss
no attachment loss
adaptation may occur

Question 11

You should not treat occlusal therapy until what

Answer 11

periodontal inflammation is controlled

Question 12

What are three models for role of occlusal trauma

Answer 12

trauma from occlusion without periodontitis
trauma from occlusion with periodontits, but no co-destruction
trauma from occlusion with periodontitis and co-destruction

Question 13

What is meant by co-destruction (of periodontitis and TFO)

Answer 13

the periodontitis merges from the increased tooth mobility

Question 14

If TFO and inflammatory period are separate, what does not occur

Answer 14

there is no enhanced attachmentloss

Question 15

If TFO with increasing mobility and inflammatory perio occur at the same site, what occurs

Answer 15

two lesions merge, there is down growth of pocket epithelium and there is enhanced attachment loss = co-destruction

Question 16

What are four methods of reversible occlusal therapy of TFO

Answer 16

night guard
extracoronal splints
muscle relaxants
muscle exercises

Question 17

What are four methods of irreversible occlusal therapy of TFO

Answer 17

intracoronal splints
occlusal adjustments by selective grinding
orthodontics
orthognathic surgery

Question 18

What are five indications of selective grinding as an occlusal therapy

Answer 18

periodontal occlusal trauma
post-ortho
prior to an extensive treatment
certain TMDs
certain wear patterns

Question 19

What are 5 contraindications of occlusal adjustments

Answer 19

severe malocclusion
non-deal by tolerated occlusion
severe wear
pain
no suitable end point

Question 20

This must be present for attachment loss to occur

Answer 20

periodontitis (inflammation)

Question 21

Occlusal trauma in the absence of period may be what

Answer 21

reversible and may result in adaptation; mobile but otherwise healthy tooth

Question 22

No repair for occlusal trauma unless what

Answer 22

periodontitis is resolved

Question 23

Occlusal trauma superimposed on existing periodontitis may under certain conditions do what

Answer 23

accelerate attachment loss

Question 24

occlusal therapy is especially indicated prior to what

Answer 24

periodontal regenerative therapy

Question 25

Occlusal adjustment is not justified when,

Answer 25

in the absence of periodontal disease as a periodontal disease preventive measure