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