34 restorative materials, dental dam, matrix and wedge
TRANSCRIPT
34
Restorative Materials,
Dental Dam, Matrix and Wedge
2
Amalgam Restorative Materials
• Composition
• Types of dental amalgam
• Mercury
• Forms of dental alloy
• Properties
3
Amalgam Restorative Materials
• Manipulation– Trituration– Amalgamation– Amalgamators or triturators
• Amalgam bonding
• Complete amalgam procedure
4
Composite Restorative Materials
• Composition
• Properties of composites
• Manipulation considerations
• Modifications
5
Glass Ionomer Restorations
• Used as an aesthetic restoration
• Not suitable for areas that require strength or where aesthetics are critical
• Resin ionomers
6
Compomers
• Mostly used on Class III and V on permanent teeth and all types of restorations on primary teeth
7
Dental Dam
• Isolation of teeth for restoration procedures
• Allow greater visibility and accessibility
• Control moisture
• Protective barrier
8
Dental Dam Materials and Equipment
• Dental dam material
• Dental dam napkin
• Dental floss and tape
9
Dental Dam Materials and Equipment
• Dental dam clamps
• Forceps
• Frame
• Punching guide
• Punch
10
Preparation Before Placement of the Dental Dam
• Educating the patient
• Determining the area to be isolated
• Dividing the dental dam
• Punching the dental dam– Common errors when punching the dental
dam
11
Placement and Removal Procedures for the Dental Dam• Many techniques for placement of the
dental dam
• Through practice, the operator will find what works best
12
Placement and Removal Procedures for the Dental Dam• Dental assistant will either assist dentist
with placement or place it themselves– Depending on whether it is legal in the
state in which the assistant practices
13
Dental Dam for the Child Patient
• Basic technique is the same for both child and adult
• Parts of the dental dam and procedure should be explained using terminology appropriate to maturity of the child
14
Dental Dam for the Child Patient
• Child should be taught how to swallow and breathe with the dental dam in place
15
Alternatives for Full Dental Dam Placement
• Quickdam is an alternative to the full dental dam placement
• It is an oval piece of dental dam that has a border of flexible plastic
16
Wedges
• Hold the matrix band securely– Prevents excess filling material from
escaping between the tooth and band
• Come in different sizes – Natural, clear, or colored
• Only used when preparation includes a proximal surface(s)
17
Tofflemire Matrix• Most common matrix used for amalgam
restorations
Diagonal slot
Guide channels
Frame Inner knob
Vise Spindle Outer knob
18
Plastic Strip Matrix
• Thin, transparent strip matrix– Used with composite, glass ionomer, or
compomer restorative materials on anterior teeth
19
Sectional Matrix Systems
• Used most often on Class II restorations to restore anatomical contacts