made by ai: Dental Cements & Fixed Prosthodontics

Dental Cement

A binding material used to unite objects or fill spaces between teeth and restorations.

Luting

The application of dental cement to attach a fixed prosthesis to underlying tooth structure.

Primary function of luting cement

To fill voids, mechanically lock restorations, and prevent dislodgement during mastication.

Non-adhesive luting

Retention achieved by cement filling micro-irregularities along a single path of withdrawal.

Micromechanical bonding

Retention via cement resin penetrating small, deep surface micro-pits.

Provisional luting agent

A soft cement intended for short-term retention and easy restoration removal.

Effect of eugenol on resin

Inhibits the polymerization of resin-based materials.

Conventional vs. Contemporary cements

Conventional includes Zinc Phosphate, Polycarboxylate, GI; Contemporary includes RMGI and Resin cements.

Zinc Polycarboxylate composition

Powder of zinc oxide with metal oxides; liquid of aqueous polyacrylic acid copolymer.

Zinc Polycarboxylate adhesive mechanism

Bonds to clean enamel and dentin via calcium complexation.

Zinc Oxide-Eugenol (ZOE) main use

Provisional cementation of crowns/FPDs and cavity lining due to soothing pulpal effects.

Glass-Ionomer Cement (GIC) composition

Powder of calcium aluminum fluorosilicate glass; liquid of polycarboxylic and tartaric acid aqueous solution.

Glass-Ionomer main advantages

Fluoride release, easy mixing, high strength, and potential chemical adhesion.

Resin-Modified Glass-Ionomer (RMGI)

A hybrid cement combining resin polymerization with conventional glass-ionomer acid-base reaction.

RMGI contraindication

All-ceramic restorations susceptible to etching and endodontic posts (due to hygroscopic expansion).

Dual-cure resin cement

Cement that sets via light irradiation, self-chemical reaction, or both.

Etching time for Lithium Disilicate (e-Max)

20 seconds with 5% hydrofluoric acid.

Etching time for Feldspathic porcelain

60 seconds with 5% hydrofluoric acid.

Primer-free monomer mechanism in Panavia SA

MDP monomer bonds to metal/zirconia; LCSi monomer bonds to silica-based ceramics.

Intraoral working time of Panavia SA Universal

40 seconds at body temperature (37°C).

Purpose of radiopacity in dental cement

Allows radiographic detection of residual excess cement to prevent peri-implantitis or inflammation.

Steps for screw-retained implant crown closure

Tighten screw with torque wrench, cover hole with Teflon tape, and seal with composite.