ENDO Revision Flashcards

1
Q

Define Endodontology

A

the study of the form, function and health of dental pulp and periradicular region

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2
Q

Describe Apical Region in terms of oxygen, nutrient, type of bacteria and access.

A
  • lower oxygen
  • nutrients from the periradicular tissues
  • more anaerobes
  • bacteria is harder to access for treatment
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3
Q

Describe Coronal Region in terms of oxygen, nutrient and access.

A
  • more oxygen
  • nutrients from oral cavity
  • bacteria easier access for treatment
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4
Q

2 Types of Bacteria in the Root Canals.

A

Planktonic - free floating in the fluid
Biofilm

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5
Q

What is a Biofilm?

A

aggregation of microorganisms growing on a solid substrate

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6
Q

How Resistant is a Biofilm?

A
  • anti-microbial penetration = poor
  • difficult to remove mechanically
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7
Q

What do we Use to Break up the Biofilm? Why?

A

Sodium Hypochlorite
- tissue dissolving properties

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8
Q

How does Bone Loss Come About?

A

the inflammatory response NOT THE BACTERIA

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9
Q

What do We Rely on for Diagnosis?

A

patient symptoms

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10
Q

Define SOCRATES for a correct diagnosis

A

Site
Onset
Character
Radiation
Alleviation
Time
Exacerbation
Severity

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11
Q

Sensitivity Diagnosis Tools

A
  1. hot and cold - ethyl chloride or endo ice
  2. electric pulp test
  3. radiograph
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12
Q

What can you Use If all the Symptoms are there but Cant See a Lesion on the Radiograph?

A

CBCT imaging
- takes 3D images

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13
Q

Disadvantage of CBCT

A

higher dosage

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14
Q

What is the Issue with Multi-Rooted Teeth?

A

false positives
a healthy canal can give good result whilst there is a necrotic canal

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15
Q

Is a Rubber Dam Necessary?

A

yes

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16
Q

2 Aims of Shaping a Canal?

A
  • optimise irrigation
  • fills easily
17
Q

What Happens if Necrotic Debris is Forced Past the Foramen?

A

goes into periapical tissue
inflammation
patient discomfort

18
Q

Role of Patency Filing

A

passing a small file through apex
- help remove debris
- aid irritant flow

19
Q

Two Ways for File Manipulation

A

Balanced Force- placing file to length and wind clockwise
Stem-Winding - back and forth left and right

20
Q

2 Ways Files Fracture

A

Torsional - too much pressure, snaps
Cyclic Fatigue - multiple compression

21
Q

Why are thicker files more likely to fracture?

A

cyclic fatigue in curved canals