Endo Basic Treatment (7) Flashcards
What is the most important phase of technical aspect of RCT?
Access opening
T/F: NiTi rotary instruments are more likely to fracture than hand files.
True
Les likely to ledge, more likely to fracture
What is the best indicator of clean walls?
Level of smoothness
What are the indications for using sodium hypochlorite as an irrigant?
- Disinfection
- Dissolved organic matter
- Does not remove smear layer
- Concentrations from 0.5-6%
What are the signs and symptoms of an NaOCl accident?
Intense immediate pain, excessive bleeding from tooth, swelling.
Post-op bruising and nerve deficits.
How is a NaOCl accident treated?
Long acting anesthetic, drainage, steroids, antibiotics, analgesics
T/F: NaOCl and chlorhexidine should be used together.
False
What is the best intracanal medicament?
Calcium hydroxide
T/F: Gutta percha does not require a sealer in order to seal the canal.
False
Gutta percha does not seal without sealer.
Why is anesthesia difficult in patients with large infections?
PH of the abscess
What are the indications for apicoectomy instead of non surgical endo?
- Overextension of obturating material
- Biopsy is necessary
- Root-end filling is necessary
- Apical portion can not be properly cleaned/shaped
How much root tip is removed during root-end resection? How far much of the root is filled with root-end filling material?
3mm; 3mm
What is the best root-end filling material?
MTA
What is the difference between hemisection, bicuspidization, and root resection?
Hemisection - entire half of tooth is removed (root and crown)
Bicuspidization - Tooth is split into two. All components of tooth remain
Root resection - One root is removed. Whole crown remains.
T/F: In an endo emergency, placing a chemical medicament in the pulp chamber will reduce pain for patient.
False
