Specialty Materials

MATERIAL

CAD/CAM Restoration—Digital Impression

image

How Supplied

Powder

Composition

Blue antireflective contrast medium

Armamentarium

• Restorative instruments
• CAD/CAM system with optical scanner
• CAD/CAM impression powder

Directions

1. Prepare tooth for an indirect restoration.
2. Clean tooth with water, and isolate it to prevent contamination during impression.
3. Coat prepared tooth lightly with impression powder (blue antireflective contrast medium), ensuring all surfaces of prepared tooth and adjacent areas are coated.
4. Place optical scanner over prepared tooth. When scanner is in correct position and image quality is good, capture image and upload into computer.
5. Design restoration on computer, and cut from solid block of porcelain in separate milling unit.

 

image Special Notes/Helpful Hints • The CAD/CAM camera that takes the optical impression measures the dimensions of the tooth structure. Applying excessive amounts of powder to the tooth surface can distort the optical impression.

MATERIAL

Topical Fluoride

image

How Supplied

Foam and gel

Composition

Acidulated phosphate or sodium fluoride and flavoring agents

Armamentarium

• Topical fluoride
• Fluoride tray
• Saliva ejector
• Gauze squares

Directions

1. Assess patient for type of fluoride to apply to tooth surface.

• Neutral fluoride should be used for patients who have ceramic or composite restorations.
• Acidulated phosphate fluoride should be used on patients without restorations or with restorations containing only metal.
2. Select fluoride, and apply a thin strip into appropriate size fluoride tray.
3. Dry tooth surfaces with gauze square or compressed air.
4. Place fluoride trays intraorally, squeezing trays around teeth to extrude material into interproximal surfaces.
5. Give patient saliva ejector to hold and place in mouth to suction excess saliva out of mouth.
6. Remove fluoride trays at conclusion of treatment, and allow patient to suction remaining material from mouth.

 

image Special Notes/Helpful Hints • Different fluoride products can be applied to the tooth surface for 1 to 4 minutes. Research has indicated the 4-minute application is the most effective. • The patient should be given instructions not to close around the saliva ejector while the fluoride trays are in place because this can cause negative pressure and suck back in the vacuum line, and bacteria in the vacuum line can come back into the patient’s mouth causing cross-contamination. Some vacuum lines have a system that prevents negative pressure. • Acidulated phosphate fluorides can etch ceramic and composite, and this type of fluoride is not recommended for patients with such restorations.

MATERIAL

Fluoride Varnish

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How Supplied

Paste

Composition

Sodium fluoride

Armamentarium

• Fluoride varnish
• Disposable applicator brush
• Dappen dish
• Disposable cup

Directions

1. Remove excessive amounts of saliva from mouth and tooth structure where fluoride varnish is to be placed.
2. Dip disposable applicator brush into fluoride varnish and paint varnish on facial and lingual surfaces of tooth according to manufacturer’s instructions.
3. Instruct patient to spit in disposable cup to remove excessive amounts of saliva from oral cavity.

 

image Special Notes/Helpful Hints • Some fluoride varnishes require application to both the facial and the lingual surfaces, whereas others require application to only one side of the tooth surface. Read manufacturer’s instructions before use. • Fluoride varnishes creep into the interproximal surfaces of the teeth and remain on the tooth surface for 4 to 6 hours after placement. • Post-treatment instructions should be given to a patient after a fluoride varnish treatment. Most manufacturers supply post-treatment patient care instructions, which can be sent home with the patient at the conclusion of the treatment. • Do not suction fluoride varnish out of a patient’s mouth with the saliva ejector because the material can accumulate on the sides of the suction hose and cause the hose to become blocked. Instead, a disposable cup should be used during the application process.

MATERIAL

Sealant

image

How Supplied

Syringe

Composition

Resin

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Apr 6, 2015 | Posted by in Dental Materials | Comments Off on Specialty Materials
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