Prelude Primer - The primer is water based with a methacryl phosphate and hydrophilic monomer to condition the tooth prior to restoration.
 
Independent tests confirm that Prelude has the very high 5 minute and 24 hour bond strengths. It also has the smallest standard deviation, proving Prelude to be very technique insensitive.

Prelude is extremely forgiving for the presence of moisture. Too wet, or too dry is not a concern. Its water/ethanol formulation tolerates an environment that would adversely affect many other products.

The remarkably low 5 micron film thickness means restoration fit is not affected and it will not present a radiolucent layer. Bond strengths to cut and un-cut enamel are extremely high. It is ideal for Cerec* and other cast systems.