Dental Ceramics and Luting Cements Overview
A combined chairside reference that pairs each class of dental ceramic with the luting cement and surface-treatment protocol it needs. The ceramic classification, brands, and properties are drawn from Contemporary Dental Ceramic Materials, A Review Chemical Composition, Physical and Mechanical Properties, Indications for Use; the cement chemistry, surface treatments, and curing-mode guidance are drawn from Dental Luting Cements An Updated Comprehensive Review.
The single most useful organising principle: ceramics that contain a glass phase can be HF-etched and silanated for true adhesive bonding; ceramics that are non-etchable (zirconia, alumina) or resin-based must be roughened mechanically (sandblast / air-abrasion) and primed instead — never HF.
Ceramics by Composition (with recommended cement)
Glass-matrix ceramics (contain a glass phase — HF-etchable)
| Class | Example brands | Key property (≈ flexural strength) | Indications | Recommended cement + surface treatment |
|---|---|---|---|---|
| Feldspathic | VITABLOCS (Mark I/II, TriLuxe, RealLife) | ~150 MPa | Veneers, inlays, onlays, partial crowns, anterior/posterior crowns | Adhesive resin cement after HF etch + silane |
| Leucite-reinforced | IPS Empress CAD; Paradigm C (3M ESPE) | ~160 MPa | Veneers, inlays, onlays, partial crowns, anterior/posterior crowns | Adhesive resin cement after HF etch + silane (HF dissolves leucite → honeycomb surface) |
| Lithium disilicate | IPS e.max CAD | ~360 ± 40 MPa | Veneers, inlays/onlays, crowns, hybrid abutments, 3-unit bridges to 2nd premolar | Adhesive resin cement after HF etch + silane (light-cure if thin, dual/self-cure if thick) |
| Zirconia-reinforced lithium silicate (ZLS) | Celtra Duo; VITA Suprinity | ~370–420 MPa | Veneers, inlays/onlays, crowns, implant-supported crowns | Adhesive resin cement after HF etch + silane (zirconia stays dissolved in glass → still etchable) |
| Glass-infiltrated | VITA In-Ceram Spinell (~400 MPa) / Alumina (~500 MPa) / Zirconia (~600 MPa) | 400–600 MPa | Single crowns; 3-unit anterior bridges (Alumina/Zirconia) | HF does NOT alter surface → treat as non-etchable: sandblast + primer, resin or conventional cement (largely superseded by lithium disilicate / zirconia) |
Polycrystalline ceramics (no glass phase — NOT HF-etchable)
| Class | Example brands | Key property (≈ flexural strength) | Indications | Recommended cement + surface treatment |
|---|---|---|---|---|
| Alumina | Procera AllCeram; In-Ceram AL | >500 MPa | Primary/telescope crowns, anterior & posterior crowns, anterior bridges (≤1 pontic) | Resin (dual- or self/chemical-cure) after sandblasting + primer — NO HF; conventional cement acceptable for retentive preps |
| Zirconia (Y-TZP, incl. high-translucency) | Lava Frame / Lava Plus HT; Cercon ht; Zenostar; IPS e.max ZirCAD; VITA In-Ceram YZ | >900 MPa (often >1100 MPa) | Anterior/posterior crowns, implant abutments & crowns, multi-unit & long-span bridges, cantilevers | Resin after sandblasting + MDP-containing primer — NO HF; use self-/dual-cure (light cannot penetrate thick zirconia). RMGIC/GIC also acceptable on retentive preps |
Resin-matrix / hybrid ceramics (polymer network — NEVER HF)
| Class | Example brands | Key property (≈ flexural strength) | Indications | Recommended cement + surface treatment |
|---|---|---|---|---|
| PICN (polymer-infiltrated ceramic network) | VITA Enamic | ~150–160 MPa | Veneers, inlays, onlays, anterior/posterior & implant-supported crowns | Resin after air-abrasion / sandblast (NO HF) — HF destroys the polymer network |
| Resin-nanoceramic (RNC) | Lava Ultimate (3M ESPE) | ~200 MPa | Veneers, inlays, onlays | Resin after air-abrasion (NO HF) |
| Flexible nanoceramic | CERASMART (GC) | ~230–240 MPa | Veneers, inlays, onlays, anterior/posterior & implant-supported crowns | Resin after air-abrasion (NO HF) |
Metal & metal-ceramic (for comparison)
| Class | Examples | Indications | Recommended cement + surface treatment |
|---|---|---|---|
| Full-metal / metal-ceramic (PFM); well-retentive preps | Cast gold, base-metal alloys, PFM | Full crowns, FDPs with adequate retention | Conventional non-adhesive cement acceptable: zinc phosphate, GIC, or RMGIC; metal/PFM intaglio sandblast + metal primer if resin-bonding is chosen |
Provenance
Ceramic rows synthesise Table 1 and the indications/HF-etchability text of the ceramics review. Cement columns apply the surface-treatment and indication guidance of the luting-cements review (glass ceramics → air-abrasion or HF + silane; metallics → sandblast + metal primer; hybrid/indirect composite → sandblast + adhesive; zirconia/alumina → no HF).
Clinical Tips
- Etchability rule: glassy ceramics (feldspathic, leucite, lithium disilicate, ZLS) are HF-etchable; zirconia, alumina, glass-infiltrated, and resin-matrix/hybrids are non-etchable — HF does nothing useful (and destroys hybrids’ polymer network).
- Silane after HF: for glass ceramics, HF etch then silane is the gold-standard conditioning for a durable resin bond.
- MDP primer for zirconia: zirconia and alumina bond chemically through an MDP-containing primer after sandblasting — no acid.
- Resin-matrix = air-abrade only: sandblast/air-abrade VITA Enamic, Lava Ultimate, CERASMART; never HF.
- Curing mode by thickness/translucency: light-cure resin is acceptable for translucent restorations < 1.5 mm; dual-cure for 1.5–2.5 mm; self-/chemical-cure (or dual-cure) for zirconia and thick/opaque restorations where light cannot penetrate. Self-cure has poorer colour stability, so avoid it under thin/translucent ceramics.
- When conventional non-adhesive cements are fine: full-metal and PFM crowns, and any well-retentive preparation (long axial walls, ~6° taper) — zinc phosphate, GIC, or RMGIC. Note: avoid RMGIC under fragile all-ceramic restorations (water sorption/expansion can fracture them).
- Cement shade/translucency matters most for thin ceramics: at ceramic thickness ~1 mm the abutment colour and cement shade are visually significant (full-ceramic crown often contraindicated without colour matching); at ≥1.5–2 mm the effect becomes clinically negligible. Most relevant for veneers.
- Removability: crowns cemented with zinc phosphate / polycarboxylate / GIC can be removed relatively atraumatically; adhesively (resin) cemented restorations must be sectioned to remove.
Cement Class Glossary
- Zinc phosphate — water-based, non-adhesive (mechanical retention); high compressive strength, but soluble and acidic on setting. Traditional cast/metal restorations.
- Zinc polycarboxylate — water-based, chemical adhesion to calcium (chelation); biocompatible but low strength and high viscosity; needs retentive preps.
- GIC (glass-ionomer cement) — water-based, chemical adhesion, fluoride-releasing/anti-cariogenic; low solubility; sensitive to early moisture and over-drying.
- RMGIC (resin-modified GIC) — GIC + resin component: stronger, less soluble, lower microleakage, fluoride-releasing; contraindicated under fragile all-ceramics (expansion on water sorption).
- Resin cements — composite-based, highest bond strength and esthetics; classified by adhesion (adhesive, requires separate etch/primer/adhesive vs self-adhesive, contains MDP — but glass ceramics still need HF + silane) and by polymerisation (self-/chemical-cure, light-cure, dual-cure).