Definition:
Resin-based luting cements are dimethacrylate-based polymeric materials, often filled with fine inorganic particles, designed for thin-film cementation of indirect restorations. Unlike traditional water-based cements, they:
set by free-radical polymerisation
often contain functional adhesive monomers to bond chemically to tooth and restorative substrates
can be light-cure, dual-cure or self-cure
may be self-adhesive or require separate bonding agents and surface treatments.
Three main clinical subgroups:
Aesthetic composite luting resins (light-/dual-cure, no intrinsic self-adhesion)
Adhesive resin cements (contain specific functional monomers, e.g. 4-META, MDP)
Self-adhesive resin cements (phosphoric acid esters, no separate tooth pretreatment required)
Clinical case:
A 30-year-old patient presents with a cracked, heavily restored upper first premolar. You plan a bonded lithium disilicate onlay to conserve tooth structure and improve fracture resistance.
You select a dual-cure aesthetic resin luting cement:
to bond strongly to enamel and dentine via an adhesive system
to bond micromechanically and chemically to the HF-etched, silanated lithium disilicate
to improve the fracture resistance of the brittle ceramic by creating a strong, continuous adhesive interface.
A second case: a short, tapered mandibular molar receiving a zirconia crown with limited mechanical retention. Here you choose a self-adhesive or MDP-containing adhesive resin cement with prior sandblasting and zirconia primer to maximise retention.
Uses:
Resin-based luting cements are indicated for:
Resin-bonded ceramic veneers (especially thin, translucent veneers)
Glass-ceramic inlays, onlays and crowns (e.g. lithium disilicate)
Resin-bonded all-ceramic restorations where adhesive reinforcement is desired
Resin-retained bridges (Maryland, fixed–fixed, cantilever)
Bonding of fibre and metal posts in endodontically treated teeth
Composite inlays/onlays and prefabricated composite restorations
Bonding zirconia or base-metal restorations, with suitable primers/conditioning
General crown/bridge cementation with self-adhesive resin cements where a simpler procedure is needed but resin properties are desirable.
They are not usually recommended for:
Routine cementation where simple conventional cements suffice and adhesive bonding offers no clear advantage
Veneers or highly aesthetic work with self-adhesive cements, due to limited enamel bond and limited shade control.
How to use them in clinical practice?
Think of three main clinical workflows:
1. Aesthetic resin luting (e.g. veneers, ceramic inlays/onlays)
Tooth side (adhesive protocol)
Isolate (ideally rubber dam).
Clean tooth with pumice, rinse, gently dry.
Enamel and dentine conditioning:
Etch-and-rinse: 35–37% phosphoric acid (enamel 15–30 s; dentine ~10–15 s), rinse, gently dry to leave dentine moist.
Or self-etch bonding system per manufacturer.
Apply bonding agent:
Scrub into enamel/dentine, air-thin, then light-cure as instructed.
Restoration side (ceramic/composite)
5. Try-in; clean internal surface (phosphoric acid or alcohol; rinse/dry).
6. For glass ceramics:
HF acid etch (time and concentration per manufacturer), rinse thoroughly, dry.
Apply silane coupling agent; allow to react, air-dry (rinse if recommended, then dry).
For composite inlays:
Roughen (air abrasion or coarse diamond); consider silane if significant glass filler is exposed.
Cementation
8. Select shade of resin cement (especially critical for veneers).
9. Apply a thin, bubble-free layer of cement to the restoration.
10. Seat the restoration; maintain pressure.
11. Tack-cure briefly to gel excess; remove excess cement carefully with brush or instrument.
12. Fully light-cure from multiple directions for recommended time.
13. Finish margins and check occlusion.
2. Adhesive resin cements for metal/zirconia and posts
Isolate and clean the tooth; prepare post space or crown prep.
Tooth bonding:
Use etch-and-rinse or self-etch dentine bonding protocols if required by the cement system.
Metal / zirconia surface treatment:
Grit-blast with alumina (e.g. 50 µm).
Apply metal/zirconia primer containing functional monomers such as MDP, or use a cement that already contains such monomers.
Mix dual-cure adhesive resin cement and apply to post or crown interior.
Seat post/restoration; maintain firm pressure.
Light-cure accessible margins; allow chemical cure in deeper areas.
Remove excess at gel stage; finish once completely set.
3. Self-adhesive resin cements (simplified cementation)
Remove temporary cement, clean tooth (pumice, rinse). Avoid strong acids on dentine.
Optional: selective enamel etch with phosphoric acid to improve enamel bonding, if allowed by manufacturer.
Treat restoration internal surface (sandblast, ceramic primer, metal primer as recommended).
Activate/mix capsule or auto-mix syringe of self-adhesive resin cement.
Apply cement to restoration; seat immediately.
Maintain pressure; light-cure margins to speed set, then allow full dark cure.
Remove excess cement at gel stage and finish.
Constituents:
Resin matrix
Base dimethacrylates: Bis-GMA, UDMA, TEGDMA or related monomers.
In self-adhesive cements: acidic functional monomers (e.g. phosphoric acid esters, 4-META, MDP).
Inorganic filler
Silanated glass or ceramic fillers (reduced particle size for low film thickness).
Radiopaque fillers (Ba, Sr glass, zirconia, etc.) to ensure radiopacity.
Initiator systems
Light-cure: camphorquinone + amine.
Chemical/dual-cure: peroxide/amine redox systems modified to function in acidic environments (self-adhesive systems).
Additives
Pigments, opacifiers (TiO₂) for shade and translucency.
Inhibitors, stabilisers, sometimes fluoride-releasing fillers.
Chemistry:
Free-radical polymerisation of dimethacrylate monomers into a cross-linked polymer network:
Initiation by light (photoinitiators) and/or chemical redox systems.
Propagation of polymer chains until termination by combination or disproportionation.
Adhesive resin cements incorporate functional monomers that:
Have methacrylate groups that co-polymerise into the resin network.
Have acidic groups (carboxylate, phosphate) that bond to:
metal oxides on base metals and zirconia
calcium in enamel and dentine (when appropriately conditioned).
Self-adhesive cements:
Acidic monomers partially demineralise the underlying tooth surface (especially dentine) and diffuse into it.
As they polymerise, they fix in place as an ionically bonded, hybridised interphase without separate etching.
Adhesion
1. Resin–tooth bonding
Conventional resin cements (aesthetic & adhesive)
Depend on a separate dentine/enamel bonding agent:
Etch-and-rinse: phosphoric acid etching → demineralised zone → infiltration with primer/adhesive → hybrid layer and resin tags.
Self-etch: acidic monomers demineralise and infiltrate simultaneously, creating a thinner hybrid layer but good dentine bond.