Composite Restorative Instruments

Sectional Matrix System

Function

To replace missing proximal wall of cavity preparation for placement of composite material or other restorative materials for class II restorations

Characteristics

Variety of sizes and shapes to accommodate restoration:

Pediatric band—Primary molar

Small band—Premolar, small molar

Extended small band—Premolar, molar, with deep cervical restoration

Standard band—Molar restoration

Large band—Deep cervical restoration

Tension rings—Different sizes to accommodate restoration

Placed on tooth with forceps (see Chapter 7, page ••)

Practice Notes

Sectional Bands are used on amalgam, composite, build-up, and temporary filling tray setups.

Classes III and IV composite restorations use a Clear Mylar Matrix strip—refer to composite tray setup.

Sectional Bands should be disposed of in the garbage, or state regulations should be followed. Single use only. Tension Rings and forceps must be cleaned, bagged individually or bagged/wrapped in a tray setup, and then sterilized. A chemical/steam indicator device should be included in the wrapping. Hinged instruments should be processed open and unlocked.

Composite Placement Instrument

Function

To carry composite material for cavity preparation

To place and condense composite material in cavity preparation

To carve composite material in cavity preparation

Characteristics

Double ended

Different angles on ends

Ends shaped differently, one to accommodate initial placement of material (paddle end) and the other end to condense, contour, and carve material

Metal or plastic:

Plastic composite instrument—Plastic that can be sterilized

Metal composite instruments—Titanium nitride coating

Variety of sizes, shapes, and angles available

Practice Note

Composite Placement Instrument is used on composite tray setups.

Composite Placement Instrument must be cleaned, bagged individually or bagged/wrapped in a tray setup, and then sterilized. A chemical/steam indicator device should be included in the wrapping.