2. Lab Procedures Prior to
Master Impression
making
Learn about the crucial lab procedures
that come before master impression
making, including the importance of
preparation, techniques, tools required,
and common mistakes to avoid.
3. Introduction
Before creating a master impression, it is essential to follow
specific lab procedures. By doing so meticulously, you can ensure
the accuracy and success of the impression-making process.
4. Importance of Lab Procedures
Lab procedures play a significant role in the success of master
impression making. These procedures ensure precise
measurements, proper material selection, and optimal working
conditions.
5. Preparation Before Master
Impression Making
Proper preparation is crucial for a successful
master impression. This includes disinfecting
the working area, calibrating instruments, and
ensuring adequate lighting for accurate
evaluations.
6. Purpose of Lab Procedures
1 Ensuring Accuracy
Lab procedures help to ensure accurate and
precise dental work by creating detailed records
and models.
2 Achieving Aesthetics
They aid in achieving aesthetic results through the
customization of restorations and prosthetics.
3 Patient Comfort
Lab procedures contribute to the creation of
comfortable and well-fitting dental appliances for
patients.
4 Quality Control
They play a crucial role in maintaining quality
control standards in the dental laboratory.
7. Techniques for Master Impression Making
1 Double Mix Technique
A popular technique
involving a preliminary
impression and a final I
to capture accurate
details.
2
Putty-Wash Technique
A two-step technique
using a putty material
the initial impression
and a material for the
final impression.
3 Compressive Technique
A technique that
involves compressing
the impression material
around the prepared
tooth to achieve
optimal detail
reproduction.
8. Types of Lab Procedures
Dental Impressions
The process of taking
impressions to create
accurate replicas of the
patient's teeth and oral
structures.
Articulation
The act of mounting dental
casts on an articulator to
assess the patient's bite and
occlusion.
Shade Matching
The technique of
matching the color and
translucency of
restorations to the
patient's natural teeth.
Custom Stain and Glaze
The application of
individualized ceramic stains
and glazes to dental
restorations for lifelike
aesthetics.
9. Tools and Materials Needed
Impression Trays
Various types
and sizes of
trays designed to
fit different
arches and
facilitate
accurate
impression
taking.
Impression Materials
Rigid or elastic
materials that
capture the
detailed
morphology of
the oral tissues
and teeth.
Disinfection
Solutions
Solutions used
to disinfect
impression trays
and materials,
ensuring a clean
and safe working
environment.
10. Importance of Lab Procedures
1 Patient Satisfaction
Well-executed lab procedures lead
to high-quality dental work and
improved patient satisfaction.
2 Enhancing Dentist-Laboratory
Collaboration
Clear communication and
adherence to lab procedures foster
strong relationships between dental
professionals and dental
technicians.
3 Effective Treatment Planning
Accurate models and diagnostic
information obtained through lab
procedures aid in precise
treatment planning.
4 Long-Term Durability
Proper lab procedures contribute to
the longevity and durability of dental
restorations and prosthetics.
11. Common Mistakes to Avoid
1 Inadequate Tray
Selection
Using a tray that
is too small or too
large can lead to
distorted
impressions and
inaccurate
results.
2 Incomplete
Mixing of
Materials
Insufficient mixing
can result in
inconsistent
material
properties and
compromised
impression
3 Insufficient
Moisture Control
Excess saliva or
moisture in the
oral cavity can
negatively impact
impression
accuracy and
detail
12. Conclusion
By following proper lab procedures
before undertaking master impression
making, dental professionals can ensure
precise and reliable results, ultimately
contributing to successful restorative
treatments.
