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For many years, silane has been used to bond to HF etched silica ceramics. Recently, clinicians have been confused about the use of silane on the newer, non-etchable ceramics such as alumina and zirconia. On such ceramics, silane does not yield a stable bond.3 In an attempt to eliminate confusion and create a more "universal" bonding protocol, Clearfil Ceramic Primer (Kuraray) was introduced to bond both HF-etchable silica based ceramics and other non-etchable ceramics, such as alumina and zirconia. This Primer combines silane for silica ceramics and the 10-MDP adhesive monomer of Panavia, a m...
The other version of Microprime, known as Microprime B. (Take a guess at who "B" is). This patented version uses benzethonium chloride in place of the glutaraldehyde. The trade off is less soft tissue burning with B but somewhat less disinfection than with G. In terms of sensitivity reduction, I think the performance is about the same for both versions. HEMA appears to be the desensitizing ingredient as shown by Japanese research: Suda et al., Dental Materials Journal, 9 (2) 163-166, 1990.
You need Belle de St. Clair HP opaquer (Kerr Lab products), which is suppiled in Vita shades. The only good alternative is Bisco opaquer, dual cure, but it does not come in Vita shades, just a Universal shade. So I prefer the HP opaquer; be sure to light cure it thoroughly since it is opaque.
Most often you would sandblast the endo opening, apply a Clearfil product like Photo Bond mixed with Activator or SE Primer mixed with Activator. (Prelude SE #2 Adhesive may also be used with Clearfil Activator.) After light curing, the HP opaquer is applied and light cured, then some composite is placed.