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DAM 1001 > DAM & Endo > Flashcards

DAM & Endo Flashcards

1
Q

The cavity in the inner portion of the tooth
Containing the nerves and blood supply to the tooth.

A

Pulp Cavity

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2
Q

The pulp chamber is devided into what 2 things?

A
  1. Pulp Chambe er & horns (coronal)
  2. Root Canals (in roots)
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3
Q

Anterior teeth have the pulp chamber more?

A

More incisal

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4
Q

Posterior teeth have the pulp chamber more?

A

Cervical

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5
Q

How many pulp chambers in each teeth?

A

1 chamber for all

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6
Q

How many pulp horns in teeth?

A

1 horn per cusp usually.

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7
Q

Explain the 3 parts of the pulp chamber

A
  1. Roof of pulp chamber (top)
  2. Floor of pulp chamber (bottom, above frucation)
  3. Orfice from chamber to canals
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8
Q

What can you perforate in a restoration with deep decay?

A

Perferate the roof of the pulp chamber

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9
Q

What happens if you pass the floor of the pulp chmaber?

A

Tooth can crack!

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10
Q

Portursion of the pulp chamber extending towards cusps.
Recede over time with trauma & Teritary dentin formation

A

Pulp Horns

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11
Q

Located below canal orfices, where nerve and vascular supply runs up into the pulp chamber.

A

Root Canals (pulp canals)

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12
Q

Opening at the end of each root that allows for nerve and vascular supply to enter the tooth, not usally at exact apex more so sideways.

A

Apical Formaina

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13
Q

What are branches off man root canals called?

A

Acessory/ lateral canals

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14
Q

Explain a Type 1 Pulp Canal

A

Type 1
1 canal : 1 Foramen

Mostly anterior teeth

can occur in any 1 root
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15
Q

Explain a Type 2 Pulp Canal

A

2:1
2 canals that merge into 1 foramin

can occur in any 1 root
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16
Q

Explain a Type 3 Pulp Canal

A

2: 2
2 seperate canals 2 foramin

can occur in any 1 root
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17
Q

Explain a Type 4 Pulp Canal

A

1: 2
1 canal, splits into 2 foramin

can occur in any 1 root
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18
Q

What type?

A

type 1; 1 canal 1 foramin

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19
Q

What type?

A

Type 3
2 canals 2 foramin

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20
Q

What Type?

A

Type 4
1 canal 2 foramin

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21
Q

What type?

A

Type 3
2 canals: 2 foramin

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22
Q

What type are these on either root?

A

Type 3!
2 canals: 2 foramin

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23
Q
A
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24
Q

Why is this bad?

A

Curvature is bad! you want a straight endo acess.

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25
Q

What is wrong?

A
  • Apical perforation
  • Frucation Abcess
  • Broke file left inside
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26
Q

Explain incisor pulp chambes & horns

A
  • 3 pulp horns: mesial, central, and distal correlating with three facial lobes and three mamelons (on incisors)
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27
Q

Explain Peg lateral pulp chambes & horns

A

1 lobe so they are more likely to only have 1 horn

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28
Q

Explain canine pulp chambes & horns

A

1 pulp horn, only 1 cusp

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29
Q

Explain anterior root canals

A

Most likely= 1 root 1 canal (type 1)
*if 2 canals exist one is facial one is lingual

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30
Q

What anterior tooth has high RCT faliure rates because 40% can have 2 canals instead of 1?

A

Mandibular anteriors

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31
Q

Explain trend of pulp chamber and horns of young anterior teeth

A

they extend way into the crown, not much seperation of chamber and dentin

32
Q

In yongue caines, explain size of chamber

A

Larger and extend well into crown esp mandibular canines

33
Q

Explain pulp chamber in mandibular 1st PM

A

Usually 1 root 1 canal, lingual cups is non function; i.e it doenst get its own canal :/

If it has 2 it will be a Type 4; 1 canal, then splitting into 2 foramin

34
Q

Explain pulp chamber in maxillary 1st PM

A

2 pulp horns, 2 canals

35
Q

What does this display?

A

Pulp Chamber and Horns of Molars young maxillary molar with larger chamber and horns well into crown

36
Q

What does this display?

A

Pulp Chamber and Horns of Molar Older Mandibular Molar. Smaller Chamber in Root Trunk, Only Horns Into Crown

Calcification
37
Q

What arch and tooth?

most often have three roots and four canals (two in mesiobuccal root), and 4 orifices in the chamber floor.

A

Maxillary Molars

38
Q

What arch what tooth?

most often have two roots but three canals (two in mesial) and 3 orifices in the chamber floor.

A

Mandibular Molars

Not 2 roots, and 3-4 canals

39
Q

Explain 4 canals on maxillary 1st molar

A
  • 1 DB canal
  • 2 MB canals (MB1 MB2
  • 1 Paletal Canal
40
Q

Explain pulp shape in primary molars comparedto secondary molars

A

Primary have much larger chamber in relation to the size of the crown

41
Q

Why Pulp Cavities Get Smaller in Older Teeth?

A
  1. Depostion of 2nd dentin as we age
  2. Depostion of reperative dentin in response to trauma and restoations (3)
  3. Calcium hydroxide base; calcification

Physiological response

42
Q

What is the Clinical Application of Pulp Morphology Related to Restorative Dentistry

A

It is important ot know the pulp morphology so that when conducting a resotration you can avoid a pulp exposure, but also know that if decay reaches the pulp then tooth require further tx like RCT

43
Q

Is a specialty concerned with human dental pulp and periapical tissues

A

Endodontics

endodontist= specialist

44
Q

around the root conditions

A

Periradicular/ Periapical

45
Q

pulp inflamed and cannot heal. tooth hurts all the time. req RCT

A

Irreverisble Pulpitis

46
Q

dark area on x-ray around apex indicating bone loss

A

Periapical radiolucency

47
Q

Froms from chronic inflammation

A

Granuloma

48
Q

pulp is devital but tooth still function

A

Pulp Death; necrosis

49
Q

Tooth is still vital, hurts sometimes but can be repaired via a restoration

A

Reversible Pulpitis

50
Q

What is this?

A

Pericapical radiolucency;
necortic tooth with apical periodontitis

51
Q

what is diagnosis?

A

Irreversible pulpitis, pulpal caries lesion.

52
Q

How can you treat crown discoloration from pulpal damage?

A

Tooth whitening

53
Q

4 steps of endo therapy

A
  • Develop accessopening (cut a hole through roof of pulp chamber)
  • Locate canal orifices (on floor of chamber)
  • Clean out each canal (remove pulpal tissue)
  • Fill cleaned canals (with gutta percha)
54
Q

Where does gutta percha go?

A

Only in canals NOT chamber

55
Q

Clean Out Canal with Files

A

Step 3 Endodontic Therapy

56
Q

Fill Canals (with Gutta Percha); Temporize

A

Step 4; endo therapy

57
Q

What may be required post endo therapy?

A

Restoration With Post and Core, and Crown

57
Q

What teeth?

Triagular acess, narrows apically

A

Max Centrals

58
Q

What teeth?

Narrower access, more oval shaped (evenly), gets smaller apically

A

Mandibular central

59
Q

What teeth?

Narrower access, more oval shaped gets smaller apically, lingual aspect of the acess pinches in towards apical 3rd of root.

A

Mandibular lateral

60
Q

What teeth?

Round oval acess, gets smaller apically

A

Maxillary Canine

61
Q

What teeth?

Longer oval acess, smaller apically.

A

Mandibular Canines

62
Q

What toth?

Oval acess, longer (FL) , may pinch in slightly at the coronal aspect of canal due to mesial concavity.

May have 2 canals

A

Max 1st PM

63
Q
  • Otutline at cervical is ovoid, wider buccolingually
  • Normally one root and one canal
  • Root depressions on mesial and distal (distal deeper)
A

Max 2nd PM

64
Q
  • Cervical outline is ovoid wider buccolingually
  • Root depressions mesial and distal; deeper on distal
  • One canalmost often
A

mandibular 1st PM

64
Q
  • Cervical outline is ovoid, wider buccolingually than mesiodistally
  • Root Frequent on distal
  • One canalmost often
  • Crown outline ofthree-cusp type wider in lingual half
A

Mandibular 2nd PM

65
Q

Mandibular First and Second Molars

Explain
* How many roots?
* Which root wider
* How many Canals and where?
* Depressions?
* Frucation acess located where?
* Root trunk trends?

A

Explain
* How many roots= 2 roots
* Which root wider= mesial root wider FL
* How many Canals and where= 3, there are 2 in the mesial root bur there can be 4 if 2 canals in distal root
* Depressions= mesial root has a M & D root depression
* Frucation acess located where= midfacial, midlingual
* Root trunk trends= shorter and more spreaout on 1st, then 2nd, then 3rd

66
Q

Maxillary 1st and 2nd molars

Explain
* How many roots?
* Which root wider
* How many Canals and where?
* Depressions?
* Frucation acess located where?
* Root trunk trends?

A

Explain
* How many roots= 3 roots; MB, DB, L
* Which root wider= ** MB root wider FL**
* How many Canals and where= 4, there are 2 in MB root
* Depressions= MB root has a M & D root depression Lingual has sight lingual depression, max 1st have disatal cervical dep.
* Frucation acess located where= midfacial, mesial, and distal
* Root trunk trends= shorter and more spreadout on 1st, then 2nd, then 3rd

67
Q

What do wider roots on max and mand 1st molars result in?

A

Larger acesss.

68
Q

Embryological developmental variation, pulp chamber is single ribon shaped orfice with 180 degreen arc or more.

A

C-Shaped Canal

Canals dont seperate

69
Q

Explain trend in C-shaped canal

A

Most commom among asian population (30%) and in Mandibular 2nd molars.

70
Q

Why variation in canal shapes and number of roots?

A

The shape and the number of roots are determined by Hertwig’s epithelial sheath

  • All pre-determined during embyrological development of teeth.
71
Q

Primary objective during operative procedures

A

PRESERVATION of the HEALTH of the PULP

72
Q

Reasons why this is bad?

A
  • Short RCT
  • Broken instrument in frucation
  • Broken floor
  • Missed canal
72
Q

Explain

A

Type 4, 1 canal split into 2 foramin + lateral canals. Periapical radiolucency. good RCT

DAM 1001 (13 decks)

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