Download INFECTION CONTROL IN DENTAL LAB

INFECTION CONTROL IN
DENTAL LAB
Revised by: C. Heston
Created by: ANKIT PRABHAKAR
GENESIS INSTITUTE OF DENTAL SCIENCES
AND RESEARCH,FEROZEPUR
PUNJAB
CONTENTS
1
Introduction
2
Scope and objectives
3
Transmission of infection
4
Clinical and laboratory disinfection
5
CDC dental guidelines for sterilization
of instruments
INTRODUCTION
Why do we need
to know about
infection
control?
•A study has found that 67% of materials sent
from dental office to laboratories were
contaminated with bacteria of varying degree of
pathogenicity.`
Scope of this presentation
Occupational Risks
Direct contact
•Infected saliva or
blood
Airborne
infection
spatter
• From microbial
laden aerosols
• During lab
procedures
•When using knives and
other sharp items
CHAIN OF INFECTION
Pathogen
Reservoir
Susceptible host
Direct contact
Portal of entry
Indirect contact
GOALS/ ACTIONS
Make dental
lab safe
Minimize
potential
Immunization
Barrier techniques
Aseptic techniques
IC compliance
Transmission of infection
IMPRESSION
IMPRESSION
TRAYS
ARTICULATOR
Transmission
of infection
CASTS
OCCLUSAL RIMS
DENTAL PROSTHESIS
SOURCES OF PATHOGENS
Infection control precautions
• Prevention of cross contamination should always
be a prime consideration in the dental lab.
• Appropriate personal
protective equipment
•Frequent hand hygiene
•Organization of dental
lab into separate
receiving , production
& shipping areas.
BARRIER SYSTEMS
Personal Protective
equipment
Hand washing
Plain or
antimicrobial
soap
Or an alcohol
based hand
rub
Gloves
Mask & protective
eye wear
Chin length face
shield
Labcoat
Disinfection of impressions
IMPRESSION
COMPOUND
Iodophors and sodium
hypochlorite
REVERSIBLE
HYDROCOLLOID
Iodophors and sodium
hypochlorite
IRREVERSIBLE
HYDROCOLLOID
Iodophors and sodium
hypochlorite
POLYETHER
Iodophors and sodium
hypochlorite
ZOE IMPRESSION
PASTE
Glutaraldehydes, iodophors
POLYSULFIDE
Glutaraldehydes, iodophors
SILICONE
Glutaraldehydes, iodophors
CHOICE OF DISINFECTANT
METHODS OF DISINFECTION
Methods of
disinfection
Spraying
Uses less
disinfectant
Same
disinfectant can
be used again
Immersion
Preferable
Exposure of all
surfaces
DENTAL LAB PROCEDURES
INCOMING
ITEMS
OUTGOING
ITEMS
Rinse to
remove blood
& saliva
Clean and
disinfect
Disinfect
Rinse, dilute
with
mouthwash
Again rinse to
remove
disinfectant
Place in
plastic bag
Add the
annotation on
the form
Label the
plastic bag
ORALLY SOILED PROSTHESIS
Scrub with brush and antimicrobial
soap.
Place in plastic bag in ultrasonic
cleaning solution.
Removed
Rinsed
Dried
Accomplished required work.
DENTAL PROSTHESIS
Do not exceed the
recommended contact
time to minimize
corrosion.
 Do not store in
disinfection before
insertion.
 Store in diluted
mouthwash until
insertion.
DISINFECTION OF CASTS
Most difficult to disinfect
without causing damage.
In such cases, can be sprayed
with an iodophor or chlorine
product
Rinsed, handled in aseptic
manner
Transfer to the production
area.
Dry properly, if shipping.
LAB EQUIPMENT
 Polishing lathe requires special
attention.
 Should be equipped with shield
 Should be equipped with ventilation to remove
aerosols
 Air suction motor must be able to produce an
air velocity of at least 200 feet/min
 A metal enclosure with hand holes is fixed to
the front of the hood provides maximum
containment
 Pumice has been shown to pose
a potential contamination risk
via aerosol or direct contact. It
should be discarded after every
use
 Rag-wheel and burs need to be sterilized
between uses
 All unbarriered areas need to be disinfected.
CDC DENTAL GUIDELINES
 Objectives - protect patients, practitioners & staff.

All blood and saliva is infectious.
 Reviews scientific information & makes recommendations to
protect the health of the population.
 Tracks disease trends & investigates disease outbreaks.
RESPONSIBILITY
Responsibility
Practical code
Universal
precautions
Standard
precautions
Procedure kept
cross infection
control
Protect
exposure from
blood
Blood as well
as from body
fluids also.
GENERAL PREVENTION
VACCINATION
MEDICAL HISTORY
•In order to identify
pathological conditions,
30
25
20
15
10
5
0
•Drug induced conditions
HIV HBV HCV
Average Risk of Transmission
after Percutaneous Exposure to Blood
•Malformations &
abnormalities
SPECIFIC GUIDELINES
These guidelines apply in the care of all patients.
Disposal of
wastes
Cleaning
and
maintenance
Personal
hygiene
SUMMARY
Wearing
protective
personal
equipments
Adhering to
Standard
precautions
Aseptic
techniques
PREVENTION OF DISEASE
TRANSMISSION