Isolation of the operation
field
Dry field in oral
environment?
 Access
 View
 Setting of materials
What does complicate the access?
 Saliva
 Cooling water spray (??)
 Blood
Dry field management
Relative dry field
Absolute dry field
Relative dry field
Cotton rollers
Cotton squares Cotton cups
Relative dry field
 Belvedere matrix
 Wooden wedges
 Minidam
d
 Ix
Wooden wedge
Access to the cavity
(retracts the gingiva)
Dry field
(stops bleeding)
- Matrix adaptation
(presses the strip tightly)
Absolute dry field
Rubber dam (kofferdam)
A membrane which isolates the operation field
from oral envionment.
Components
Perforation forceps
Frame
Rubber
Template
Clamp
Forceps for clamps
Benefits
 Protection of patient against gulp or aspiration
 Protection of dentist and assistant against infection
 Possibility of the aseptic approach
 Absolute dry field
 Retraction of soft tissues
 Protection of soft tissues
 Better access to the operation field
Nevýhody a nebezpečí
kofferdamu
 Limitation of oral breathing
 Fear
 Latex allergy
 Aspiration or gulp of the clamp
 Damage of hard and soft tissues
Rubber
Roll
Square (blank)
Perforation
Round aperture
Perforation plate
Jak velká bude perforace?
Podle velikosti zubu
Podle síly a druhu blány
Podle způsobu nasazení kofferdamu
arch
wings
Clamps for retention
Clamps for retraction
Contact – areal 4 pointed
Kolik zubů izolovat ?
Způsoby nasazení
 Napřed blána, potom spona
 Napřed spona potom blána
 Přes oblouk spony
 Sekundové nasazení
Ligaturs
Latex rollers
Lubrikation
Napkin