Eruption/trauma/Special

Question 1

Though 6 month variations on either side of usual eruption is normal what is the most common variation?

Answer 1

Delayed eruption

Question 2

Fused palm creases in common in what?

Answer 2

Trisomy 18 and 21

Question 3

Delayed tooth eruption, periodontal disease and low dental caries susceptibility is common in what?

Answer 3

Trisomy 21 (Down Syndrome)

Question 4

Hypothyroidism and hypopituitarism can result in what?

Answer 4

Delayed eruption

Question 5

Crowded teeth, open bite, chronic gingivitis and delayed dentition is characteristic of what genetic condition?

Answer 5

Achondroplastic dwarfism

Question 6

By the time of clinical emergence, how much root has formed?

Answer 6

3/4

*mean difference between genders was 0.54 year

Question 7

Premolar eruption is delayed in what scenario?

Answer 7

Children who lose primary molars at 4 or 5 years

*it is accelerated if lost at 8-10 yrs

Question 8

85% of natal or neonatal teeth are which?

Answer 8

Mandibular primary incisors

Question 9

What forms along the mid palatine raphe and are remnants of epithelial tissue?

Answer 9

Epstein pearls

Question 10

Remnants of salivary gland tissue on the buccal and lingual aspects of dental ridges are called?

Answer 10

Bohn nodules

Question 11

Remnants of the dental lamina found on the crests of maxillary and mandibular dental ridges form what?

Answer 11

Dental lamina cysts

Question 12

A halter man appliance tilts the erupting molar to avoid what?

Answer 12

Ectopic eruption

Question 13

Which teeth are most often observed to be ankylosed?

Answer 13

Mandibular Primary molars

*does not occur in anterior unless there has been trauma

Question 14

What are 3 theories for ankylosis of primary molars?

Answer 14

1-Familial pattern
2-No permanent successor
3- reparative in response to resorption

Question 15

Large fontanels, Absence of clavicles, and prognathism, short vertical maxilla and supernumerary teeth are characteristic of what?

Answer 15

Cleidocranial Dysplasia

Question 16

What are 5 types of special needs?

Answer 16

1-Physical
2-Cognitive
3-Mental
4-Sensory
5-Behavior

Question 17

What percentage of households have a special needs individual?

Answer 17

20%

*More than 60% have trouble taking care of themselves

Question 18

What are the most important tools when working with SHCN patients?

Answer 18

Compassion and Tolerance

Question 19

What 3 scenarios may constitute the need for protective stabilization?

Answer 19

1-Immediate diagnosis/limited treatment
2-Other behavior management have failed
3-Safety of patient, staff, parent or practitioner

Question 20

Nitrous oxide and sedatives are contraindicated with what condition?

Answer 20

Cystic fibrosis and other pulmonary function impairments

Question 21

Even the best lip readers only comprehend how much of what is said?

Answer 21

30-40%

Question 22

What very rare genetic disorder involves connective tissue and results in blistering?

Answer 22

Epidermolysis Bullosa

*problem with basement membrane

Question 23

A force strong enough to fracture, intrude or avulse a tooth is also strong enough for what?

Answer 23

Cervical Spine or intracranial injury

Question 24

Why is pulp testing a traumatized tooth unreliable?

Answer 24

It is in a state of shock and often fails to respond

Question 25

What are the 4 types of crown fractures?

Answer 25

1-Simple fracture w/ little or no dentin 2-Involves dentin but no pulp 3-Involves dentin and pulp 4-Whole crown

Question 26

Since any injury should be considered dirty what should always be checked?

Answer 26

Tetanus inoculation is current

Question 27

A tooth that appears reddish due to congestion of blood in the pulp chamber is called what?

Answer 27

Pulpal Hyperemia

Question 28

Dark grey discoloration of the tooth usually means what?

Answer 28

Non-vital pulp and possibly necrotic

Question 29

Light grey or yellow discoloration often means what?

Answer 29

Vital pulp with canal obliteration

Question 30

Therapy to stimulate root growth and apical repair in immature teeth with pulpal necrosis is called what?

Answer 30

Apexification

Question 31

Trauma with damage to the periodontal structures may cause what?

Answer 31

External root resorption

Question 32

A small pigmented hypo plastic area usually due to trauma to the permanent tooth bud is called what?

Answer 32

Turner Tooth

Question 33

If a permanent tooth with closed apex is intruded 3 mm or less what should you do?

Answer 33

Let it erupt without intervention. Watch it in case ortho is needed to extrude

Question 34

What often occurs when permanent teeth are reimplanted?

Answer 34

Slow or Rapid root resorption

Question 35

What is the most common age for tooth avulsion?

Answer 35

7-9 years, 3 times more frequent in boys

Question 36

What is the most favorable time frame to reimplant a tooth?

Answer 36

less than 30 minutes *95% of teeth after 2 hours end up with root resorption

Question 37

What are 4 storage mediums that can be used for avulsed teeth?

Answer 37

1-Hanks buffered saline 2-Isotonic saline 3-Pasteurized cows milk 4-Tap water (not ideal but better than nothing)

Question 38

Less severe luxation is splinted for ____ weeks whereas more severe ones are splinted _____ weeks

Answer 38

1-2 4-6

Question 39

An appliance used to prevent contracture of healing tissue can be used in what traumatic case?

Answer 39

Oral burns *allows a normal appearing commissure to heal

Question 40

According to Ellis classification, which class of fracture only involves enamel with little or no dentin?

Answer 40

Class I

Question 41

According to Ellis classification, which class of fracture only involves enamel and dentin with no pulp?

Answer 41

Class II

Question 42

According to Ellis classification, which class of fracture only involves enamel dentin and pulp?

Answer 42

Class III

Question 43

According to Ellis classification, which class of fracture is a traumatized tooth that becomes non-vital?

Answer 43

Class IV

Question 44

According to Ellis classification, which class of fracture involves tooth loss or avulsion?

Answer 44

Class V

Question 45

According to Ellis classification, which class of fracture involves fracture of the root with or without loss of crown structure

Answer 45

Class VI

Question 46

According to Ellis classification, which class of fracture is the displacement of tooth with neither crown or root fracture?

Answer 46

Class VII

Question 47

According to Ellis classification, which class of fracture is fracture of crown en masse and its displacement?

Answer 47

Class VIII

Question 48

According to Ellis classification, which class of fracture is given to traumatic injuries of primary teeth?

Answer 48

Class IX