A good example product for this is Preppies from Whip Mix (figure 3). Use resin-modified glass ionomer (RMGI) cement for zirconia restorations when the tooth preparations have near-optimum characteristics.
What is resin-modified glass ionomer used for?
Resin-modified glass ionomer restorative materials are indicated for root caries lesions due to their excellent adhesion to tooth structure and fluoride release. They are also recommended for repair of recurrent caries around existing indirect restorations.
What is RMGI in dentistry?
Resin-modified glass ionomers (RMGI) were developed in an attempt to improve mechanical properties, decrease setting time, and attenuate moisture sensitivity. Simplistically, RMGIs are a hybrid of glass ionomers and composite resin, and thus contain acid-base and polymerizable components.
Where do you place RMGI?
For another thing, a RMGI liner is placed on the dentin before placement of a DBA, while a flowable composite is placed after placement of a DBA. As a consequence, the success of a flowable composite is highly contingent of the abilities of the practitioner to first correctly place a DBA.
How does RMGI set?
Unlike GIC, RMGI is a dual-set material that utilizes an acid-base reaction to set the glass ionomer component, while the resin component is set through light curing. The application of light enhances the resin's initial set, thus reducing water loss during the chemical (acid-base reaction) phase.Oct 6, 2020
How does RMGI bond to tooth?
Adhesion of the RMGIC to dental hard tissues takes place through 2 different mechanisms: 1) a chemical bonding which occurred polyalkenoic acid chains and calcium ions in hydroxyapatite, 2) a micro-mechanical retention procured by the infiltration of the organic components into a partially demineralized dentin surface
What is the use of glass ionomer cement?
Glass ionomer cements may be used for abrasion and erosion cavities, restoration of deciduous teeth, restoration of class III and class V carious lesions, and tunnel restorations, and may also be combined with resin composite in the laminate or 'sandwich' technique.
How do you use Nexus cement?
https://www.youtube.com/watch?v=Dvg89EVV-RA
Is RMGI dual cure?
How is Nexus RMGI delivered? Is it only self-cure? No, this a dual-cure material. You can let the material self-cure or tack-cure prior to removing excess cement.
What is RMGI used for?
For deeper restorations that are close to the pulp but where no pulp is exposed, an RMGI liner is a primary option. These materials are dimensionally very stable, they bond to dentin, and release fluoride. They also reduce stress on the tooth and can inhibit microleakage.
What is the difference between glass ionomer and resin modified glass ionomer?
Whereas traditional glass ionomer cements were opaque, newer resin-modified glass ionomers have attained a much better esthetic match to dentin and enamel. In clinical studies, resin-modified glass ionomers have greater longevity than conventional glass ionomers for class II restorations.