Why stainless steel spatula is not used in GIC mixing?

Why stainless steel spatula is not used in GIC mixing?

Some dental mixing spatulas are made from plastic (used mainly for mixing glass ionomer cement) because stainless steel would react with the material being mixed.

Why do we use agate spatula for mixing GIC?

The Glass ionomer powder is powdered glass. If you use a metal spatula some of the metal will be abraded off into your mix. This will make it grey.

How does GIC bond to metal?

The mechanism of bonding of glass ionomer cement involves chelation of carboxyl groups of the polyacids with the calcium in the apatite of enamel and dentin, but as in this study, metal crowns were luted to metallic dies, hence, such chemical interaction could not occur.

Why glass slab is not used in GIC mixing?

According to the results of this study, RMGICs must not be manipulated on glass slabs, because there was a reduction in fluoride release.

Which type of spatula is used to mix luting cements?

An agate spatula was used to mix 1 scoop of the glass ionomer powder and 2 drops of liquid for 45 seconds to get a homogeneously stable luting consistency cement and was placed on a glass slab.

What is agate spatula?

Agate instrument for mixing porcelain masses. The porcelain cannot be contaminated by metal flaking off instruments. Both ends can be used.

Why do we apply Vaseline after GIC restoration?

Conclusion: Application of varnish over GIC can severely impede its fluoride release property. We suggest that in situations where the fluoride release property is more important than other properties it is better to coat the GIC with petroleum jelly or leave the restoration without any coating.

Why Vaseline is applied after GIC restoration?

Similarly petroleum jelly also impedes the fluoride release, but to a very less extent. We suggest that in situations where the fluoride release property is more important than other properties it is better to coat the GIC with petroleum jelly or leave the restoration without any coating.

When mixing zinc phosphate the mixing time is?

The setting time of a zinc phosphate cement used for cementation of inlays and crowns should be between 5 to 9 min at body temperature.

Can zinc phosphate cement be mixed on a paper mixing pad?

Zinc phosphate is one of the oldest cements used in dentistry. This cement has a low solubility which results breakdown in the mouth. Zinc phosphate cement is supplied in a powder and a liquid and is always mixed on a glass slab (rather than in a paper mixing pad).

What is plastic spatula?

The straight shafted spatulas are most often used for scraping food from the sides of pots, stirring ingredients in curved bowls or folding ingredients into each other. They are generally made of a flexible silicone plastic that can move easily around and form into the shape of bowls, pans, and pots.