Dentistry Topic 7/8

Question 1

Feline Odontoclastic resoptive lesions are also known as? ( 2 things )

Answer 1

Resorptive lesions. Neck lesions.

Question 2

At what age do neck lesions tend to appear?

Answer 2

4-6 years. Mature cats.

Question 3

Where do neck lesions usually appear?

Answer 3

The “neck” of the tooth near the cemento enamel junction.

Question 4

Neck lesions are often filled in or covered with?

Answer 4

Hyperplastic gingiva.

Question 5

What are the cells called that form enamel?

Answer 5

Odontoclasts.

Question 6

Neck lesions occur when what is destroyed by what?

Answer 6

Hard tissues of root surface are destroyed by odontoclasts.

Question 7

Neck lesions appear as a ___ or ___ at the CEJ.

Answer 7

Cavity or fracture.

Question 8

Neck lesions can travel where?

Answer 8

Under the root or the crown.

Question 9

When we push aside the hyperplastic gingival flap, what will we see underneath if it’s a neck lesion?

Answer 9

A big hole.

Question 10

What should we always do when we notice that a tooth is missing?

Answer 10

X-ray to make sure there are no roots left inside.

Question 11

What are the most commonly affect teeth regarding neck lesions?
Mandibular and Maxillary

Answer 11

Mandible: 3rd PM (307,407) and 1st Molars (309,409)
Maxilla: 3rd PM (107,207) and PM 4 (108,208)

so 107,207,307,407,108,208,309,409

Question 12

What are the clinical signs of a neck lesion?

Answer 12

Hypersalivation, head shaking, sneezing, anorexia, oral bleeding, Mostly none. Cats=Prey animals.

Question 13

Visual/tactile exams only catch lesions in what stage? So what should we be doing?

Answer 13

Late lesions. X-ray at each cleaning.

Question 14

What is the tx for a neck lesion.

Answer 14

Extraction

Question 15

What is the tx for a neck lesion if the root is resorbed?

Answer 15

Crown amputation.

Question 16

What is the cause of neck lesions?

Answer 16

May be immune mediated. Doesn’t always accompany periodontal disease.

Question 17

What is alveolar bone expansion?

Answer 17

Bulging alveoli around one or both maxillary and/or mandibulary canines.

Question 18

What is another name for alveolar bone expansion?

Answer 18

Alveolar osteitis.

Question 19

What is the cause of alveolar bone expansion.

Answer 19

Chronic periodontal disease.

Question 20

What is the tx for alveolar bone expansion?

Answer 20

Tooth extraction.

Question 21

What is the radiographic appearance of alveloar bone expansion?

Answer 21

Bone loss around the root and expansile alveolar bone growth.

Question 22

Cavities are seen in which species?

Answer 22

Dogs, not cats.

Question 23

Where are the cavities seen in dogs?

Answer 23

Occlusal surfaces

Question 24

What causes cavities?

Answer 24

Plaque.

Question 25

How are cavities different from periodontal disease?

Answer 25

Instead of affecting periodontium the plaque causes destruction of the enamel.

Question 26

How does bacteria/plaque cause cavities?

Answer 26

Sugar metabolites are acidic eroding the enamel.

Question 27

What color are cavities?

Answer 27

Brown or black.

Question 28

How do we detect cavities? ( with which tool)

Answer 28

Probe or explorer.

Question 29

How far can a cavity extend? What does this cause?

Answer 29

Dentine, pulp cavity. Periapcial abscess, pulpitis.

Question 30

What do rade reveal when we have cavities??

Answer 30

Radiolucent defects.

Question 31

What are the treatments for cavities. In which situation would you use each treatment? (2 )

Answer 31

1. Extraction or root canal if see periapical lucdency or increased pulp-cavity. 2. If crown structure is still sufficent we can do fillings with composite.

Question 32

How often must we monitor fillings?

Answer 32

6 months.

Question 33

What is root ankylosis?

Answer 33

Loss of PL causes abnormal fusion of roots to alveolar bone.

Question 34

What causes root ankylosing?

Answer 34

Severe Periodontal Disease

Question 35

Define anondontia.

Answer 35

Total absence of teeth.

Question 36

Define oligodontia.

Answer 36

Few teeth

Question 37

Define hypodontia.

Answer 37

Absence of a few teeth.

Question 38

What are the most commonly missing teeth?

Answer 38

Pre-molars.

Question 39

If we leave a root in, it increases the risk of what?

Answer 39

Forming a dentigerous cyst.

Question 40

What is a dentigerous cyst?

Answer 40

huge cyst forms around missing tooth cavity, root or tooth.

Question 41

What must we do if we find a dentigerous cyst?

Answer 41

Refer to dental specalist.

Question 42

Define unerupted tooth.

Answer 42

Partially or non-erupted tooth.

Question 43

Defined malocclusion.

Answer 43

Misaligned teeth.

Question 44

What are some consequences of malocclusion?

Answer 44

``` Pain accumulation of debris pockets PD dse tooth loss chronic pain difficulty chewing ```

Question 45

Is it possible to prevent malocclusion?

Answer 45

Yes, if detect early can do extractions and orthodontics.

Question 46

What is the term for proper occlusion, how it should look.

Answer 46

The pinking shear effect.

Question 47

What is the canine interlock?

Answer 47

The mandibular canine fits nicely between the maxillary canine and 3rd incisor.

Question 48

What is the name for the gap between two teeth?

Answer 48

The diasthema.

Question 49

What is the term for the flat area of the incisors in the back of the tooth?

Answer 49

Cingulae.

Question 50

In a normal occlusion where should the mandibular incisors rest?

Answer 50

On the cingulae of the maxillary incisors.

Question 51

What 4 points should you use to evaluate the occlusion of a canine?

Answer 51

1. Scissor incisor relationship. 2. The canine interlock. 3. The PM interdigitation ( Pinking shear effect ) 4. Head symmetry.

Question 52

Describe the pinking shear effect.

Answer 52

The cusp tips of the PM should rest in the diasthema.

Question 53

Describe the occlusion of the mesocephalic head.

Answer 53

Mandible is shorter and narrower than the maxilla. Incisors are scissor bite. Interdigitation of canine teeth not touching. Maxillary PM4 scissors with 1st molar of mandible.

Question 54

Say we have cusp to cusp pre-molars. How does this happen?

Answer 54

Either mandibular prognathism or brachygnathism.

Question 55

Prognathic = | Brachygnathic=

Answer 55

Underbite, Overbite.

Question 56

Describe the occlusion of a brachycephalic.

Answer 56

Shorter maxilla ( so underbite). Crowding and rotation of upper teeth.

Question 57

Why are brachycepalic more prone to hyperplasia of the gingiva?

Answer 57

Open mouth breathing.

Question 58

Describe the occlusion of a dolicocephalic.

Answer 58

Longer maxilla. Larger diasthema.

Question 59

What is a lance tooth? What does it result in?

Answer 59

A rostrally displaced canine. No diasthema. Crowding. Periodontal disease.

Question 60

A lance tooth is common in which breed?

Answer 60

Sheltie.

Question 61

What is an anterior ( rostral ) crossbite? What usually causes this?

Answer 61

When you have a reverse scissor bite of 1, 2 or all incisors. retained deciduous teeth.

Question 62

What is a posterior ( lingual ) crossbite?

Answer 62

PM + Mof maxilla are lingual instead of buccal

Question 63

What is a level bite?

Answer 63

When incisor teeth meet exactly. Not normal.

Question 64

Toy breeds generally have crowding of which teeth?

Answer 64

Incisors.

Question 65

Brachycephalics tend to have crowding of which teeth?

Answer 65

Premolars.

Question 66

Define Brachygnathia.

Answer 66

Shortness of one or both jaws.

Question 67

Define Prognathism.

Answer 67

Abnormal protrusion of one or both jaws.

Question 68

What is a wry bite?

Answer 68

A crooked bite