irrigation of endo
TRANSCRIPT
By : Osama Ahmad [email protected] | @Os_a_a ☚
NAO
CL"
sodiu
m h
ypoch
lorite
Norm
al Salin
e
ch
lorh
exid
ine
1 Organic tissue solvent 2 Inorganic tissue solvent 3 Antimicrobial action 4 Lubrication 5 Non toxic 6 Low surface tension
- Most common irrigant - house home bleach
イAdvantages :
1 mechanical flush 2 dissolve vital & necrotic tissue 3 Lubricant 4 Antimicrobial action 5 Inexpensive 6 Readily available
Disadvantage ひ
- Toxicity
Accidental error - Bad Taste -
Free chlorine in NaOCl dissolves necrotic tissue by breaking down proteins into amino acids.
Concentration ranging from 0.5% to 5.25 %
A common concentration is 2.5%
- Broad spectrum of Antimicrobial - Little Toxicity
イAdvantage
- sustained action
- Little Toxicity
ひ Disadvantage
Inability to dissolve necrotic tissue & inability remove smear layer
2 % chlorhexidine = antirnicrobial
action as 5.25% NaOCl
# more effective against " Enterococcus faecalis"
is a general phrase referring to a sterile solution of sodium chloride
イAdvantage:
Safe
ひ Disadvantage
No Antimicrobial effect No ability dissolve organic
properties of ideal irrigation
How to increase effect of solution ??
By Warming the solution , increase antimicrobial and tissue dissolving
By : Osama Ahmad [email protected] | @Os_a_a ☚
Lubricant
- Facilitate file insertion during cleaning and shaping - Reduce torsional Force - Reduce potential fracture
Glycerin
- Mild alcohol - Aseptic - Inexpensive - Paste lubricants can incorporate chelators
イAdvantage of Glycerin:
Suspend dentinal debris
& prevent compaction
イDisadvantage of smear layer :
- prevent sealer contact with canal wall
- permit leakage
- Separate obturation material
イAdvantage of Removal smear layer :
- File adapt
- enhance sealer contact in the canal wall
- Reduce Leakage
Removal smear layer 1 by Irrigation with 17% EDTA for 1 minute followed by NaOcl .
2 or Use " MTAD "
Smear Layer
By : Osama Ahmad [email protected] | @Os_a_a ☚
E D
T A
M T
A D
`
Decalcifying agent
# Ethylene Diamine Tetraccetic Acid #
イ - Chelating agent
Chelators remove the inorganic components and leave the organic tissue elements intact.
NaOCl is then necessary for removal of the remaining
organic components , and remove remaining EDTA
- Most effect in coronal and middle , reduce apically
Concentration : Removal smear layer by Irrigation with 17% EDTA
for 1 minute followed by NaOcl .
イDisadvantage: - Used over 10 min , cause excessive remove of peritubular and intratubular dentin
- Deactivation of NAOCL by reduce chlorine & potential toxicity
- additional Edta to lubricant is not effective
` # Mixture Tetracycline Acid Detergent # - Remove Smear Layer
- Completely remove Smear Layer
- NAOCL then MTAD - Superior antimicrobial than NAOCL
Concentration :
1.3 %
Advantages :
- Anti microbial action - Effect in kill Enterococcus faecalis . - Biocompatible - Not alter dentin - enhance bond strength
By : Osama Ahmad [email protected] | @Os_a_a ☚
The G
roups
Phenol &
Ald
ehid
e
Calc
ium
Hydro
xid
e
Cort
icost
ero
ids
Chlo
rohexid
ine
1- phenolic ( Cresol , Thymol ) 2- Aldehide ( Form cresol ) 3- Halide ( NAOCL ) 4- Steroids 5- Calcium Hydroxide 6- Antibiotics
7- Combinations
Purpose :
1- Reduce pain
2- Reduce Bacteria
3- Canal be inert
` - Non specific action
Function : -Destroyed host tissue
-Aldehide are Fixation agent
- Control pain
Function :
- antimicrobial activity - inhibit microbial growth - Dissolve necrotic tissue - Radiopaque - induction of hard tissue " in root end closure " Apexification
- Alkaline Ph = 12.5 , 12.8 ph
Disadvantage ::
- No pain Reduction - Little benefit to vital pulp
Disadvantage :
- Toxicity - Not justified to use it
- placed as powder - or as mixed with liquid with L.A , water, saline
- By lentulo spiral or syringe - placed for 7 days to reduce bacteria
` - Anti inflammatory agent
Function : - Decrease pain - post operatively - Used in : 1 AAp Acute apical periodontitis 2 irreversible pulpitis
Disadvantage : - may ineffective in great pain
- 2 % gel - as gel or mixed with calcium hydroxide
Advantage : - Antimicrobial greater than calcium hydroxide - Fixative
Disadvantage : - Can't affect of smear Layer
By : Osama Ahmad [email protected] | @Os_a_a ☚
Temporary Filling
1 to 4 week
# primary Function :
Disinfection
# Secondary Function :
1 pain control
2 Decrease Bacterial 3 Control exudation or Bleeding
4 Control inflammatory root resorption