Ch. 42: Extrinsic Stain Removal

wearing away of surface material by friction

abrasion

material composed of particles of sufficient hardness and sharpness to cut or scratch surface

abrasive

production (by friction) of a smooth, glossy, mirror-like surface that reflects like

polishing

Why must an antibiotic be taken prior to prophylaxis if someone’s medical history indicates it?

bacteremia can occur because the rubber cup could force microorganism into the blood stream

What are some contraindications to polishing? 

no extrinsic stain

respiratory problems

tooth sensitivity

restorations

Rounded particles with dull edges abrade ____ than irregular shaped with sharp edges.

less

What size of particles would give a glossier finish?

smaller particles

When grading a product from coarse to fine, the more F’s means the product is more ____.

fine

Why must a abrasive product be moist?

thermal injury could occur to the pulp if it’s too dry

What are pumice agents made from?

volcanic rock

What is tin oxide used to polish?

metallic surfaces or exposed cementum/dentin

What is diamond particles used to polish?

porcelain surfaces

What is shimmer used to polish in our clinic?

composite restoration

What is the procedure order for using different polishing agents?

1. tin oxide for metallic restorations

2. shimmer for composite or porcelain restorations

3. prophy paste for remaining stain and biofilm

What is the sequence of stroke for polishing?

distal surface of most posterior tooth and move toward anterior

gingival third first and move toward incisal/occlusal

method of polishing where controlled spray propels polishing particles to the tooth surface

air polishing