what are the best luting materials for tooth bridge ,zinc polycarboxilate cement or glass ionomer cement?

Answer 1

If there is a possibility that the crown or bridge may need to be removed sometime in the near future (possible RCT) then by all means use the zinc polycarboxilate. If you want a more permanent bonded cementation, then use the glass ionomer's.

Answer 2

I'm a dentist.

Depends on what you mean by "best". I would say that zinc is the worst, as it erodes more and because it is known to have some sensitivity issues with vital teeth.

Beyond that, resins and glass ionomers each have their own advantages. I would overall give my nod to the glass ionomers, as they adhere to dentin better than resin cements do and unlike resin cements they can absorb and release fluoride which helps inhibit recurrent caries.

Resin cements are really more appropriate for bonding to all-porcelain restorations and for bonding veneers (which involves more enamel-bonding than dentin-bonding). There are, however, some all-porcelain materials (for example, Ivoclar) which can be used with glass-ionomer cements.

Overall, I'd go with glass ionomer.

Answer 3

Zinc polycarboxylate is better. Although it was found more soluble in jet erosion test, glass ionomer was found more soluble in immersion in distilled water. My opinion is that the conditions in the of the tooth mimic being immersed in water more than getting splashed/jet-eroded by water.
The old favorite of course is Zinc phosphate but the light-cure glass ionomers are much more convenient (but use it only as long as there's no metal in the crown being cemented).

Answer 4

those are some dinosaur cements. i use a resin cement with a little glass ionomer in it.