The practice of fixed prosthodontic has changed dramatically with the introduction
of innovative techniques and materials. Adhesive resin systems are examples of these
changes that have led to the popularity of bonded ceramics and resin-retained fixed
partial dentures. Today's dentist has the choice of a water-based luting agent (zinc
phosphate, zinc polycarboxylate, glass ionomer, or reinforced zinc oxide-eugenol)
or a resin system with or without an adhesive. Recent formulations of glass ionomer
luting agents include resin components (resin-modified glass ionomers), which are
increasingly popular in clinical practice.
This review summarizes the research on these systems with the goal of providing information
that will help the reader choose the most suitable material.
The scientific studies have been evaluated in relation to the following categories:
(1) biocompatibility, (2) caries or plaque inhibition, (3) microleakage, (4) strength
and other mechanical properties, (5) solubility, (6) water sorption, (7) adhesion,
(8) setting stresses, (9) wear resistance, (10) color stability, (11) radiopacity,
(12) film thickness or viscosity, and (13) working and setting times. In addition,
guidelines on luting-agent manipulation are related to available literature and include:
(1) temporary cement removal, (2) smear layer removal, (3) powder/liquid ratio, (4)
mixing temperature and speed, (5) seating force and vibration, and (6) moisture control.
Tables of available products and their properties are also presented together with
current recommendations by the authors with a rationale.