Endodontics Practise Questions | Exam Review 2024
1. What are the 3 main steps to a root canal treatment?: 1. Instrumentation
2. Irrigation
3. Obturation
2. What does instrumentation do?: mechanical debridement
3. what does irrigation do?: chemical disinfection
4. what does obturation do?: e...
1. What are the 3 main steps to a root canal treatment?: 1. Instrumentation
2. Irrigation
3. Obturation
2. What does instrumentation do?: mechanical debridement
3. what does irrigation do?: chemical disinfection
4. what does obturation do?: eliminates portal of entry between periodontium and canals
5. what is Endodontics?: The prevention or treatment of apical periodontitis
6. what initial radiographs do you need to take during an endo diagnoses case?: PA and BW
**need to make sure to include apex
7. what should be included in a case presentation?: 1. Age/Gender/Background
2. Medical/Dental History
3. Chief Complaint
4. Clinical Exam (EO/IO)
5. Endo Diagnostic Tests
6. Radiographs
8. What should always be included in a Endodontic Diagnosis?: 1. Pulpal Diagnosis
2. Apical Diagnosis
9. what is Pulp Revascularization?: the restoration of blood supply in the pulp space
10.what is vital pulp therapy?: Maintenance of pulp vitality after exposure with:
- Pulp Capping
- Full or partial Pulpotomy
11.Enamel Composition: - 96% inorganic (Hydroxyapatite)
- 4% organic and water
12.Dentin Composition: -70% inorganic (Hydroxyapatite)
- 20% organic (collagen fibers)
- 10% water
13.what is the first dentin formed?: Mantle Dentin
14.what is the purpose of Mantle Dental?: - Shock Absorber
- Interdigitates with enamel border acting as a transition between enamel and
Circumpulpal dentin
15.what is the bulk of the dentin called?: Circumpulpal Dentin (contains the dentinal
16. 1. Primary Dentin
2. Secondary Dentin: 1. While tooth is forming/erupting
2. After the tooth has erupted and root formation is nearly complete
17. what direction does secondary dentin form compared to primary dentin?-
: forms internal to primary dentin
18.which type of dentin (primary or secondary) develops after the tooth is in occlusion and roots
are nearly formed?: secondary dentin
19.which develops slower: Secondary or Primary dentin?: Secondary Dentin
20.what is tertiary dentin?: dentin formed in response to trauma/stimuli such as:
1. Attrition
2. Caries
3. Dental Restorations
21. what are the 2 types of Tertiary dentin?: 1. Reactionary
2. Reparative
22.Reactionary Dentin: - Original odontoblasts
- Tubular
23.Reparative Dentin: - New Odontoblasts
- Atubular
24.if you drill into enamel, will you have trauma into the dentin?: yes, can have a reaction or
inflammatory response to pulp
25.what are enamel spindles?: extensions of the odontoblastic process that pass across the DEJ
26.What is Peritubular Dentin?: - hypermineralized
- found throughout dentin except near pulp and interglobular dentin
27.What is Intertubular Dentin?: - primary product of odontoblasts
- lies between the tubules
28.what does Calcium Hydroxide (CaOH) do during RCT treatment on a cellu- lar level: changes the
pH and raises it to 12.5
29.what is the importance / function of dentinal tubules? (4 total): 1. porosity and permeability to
dentin
2. elastic quality
3. cushion enamel and prevent fracture
4. perception of pain
30.what is another name for sclerotic dentin?: transparent dentin
31.what is sclerotic/transparent dentin?: - calcification of the dentinal tubules as a result of injury
or normal aging
- tubules are closed
32.what can you use to stop the bleeding during a pulp exposure?: sodium hyperchlorite
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