GC Initial® LiSi Press
Initial LiSi® ceramic from GC provides exceptionally strong and beautiful C&B restorations. It has a wide range of clinical indications allowing you to prescribe a crown, veneer, inlay, onlay or bridge restoration. Initial LiSi® Press is a lithium disilicate ingot that utilizes a proprietary HDM (High Density Micronization) technology that allows for the equal dispersion of micro-crystals resulting in excellent physical properties and esthetics. It has a flexural strength of more than 500 MPa and is wear-kind against natural opposing enamel. Initial LiSi® restorations are extremely esthetic and come with a 5-year replacement-free warranty.
Send a Case Download RxIndications
LiSi® Press is the premium lithium disilicate, glass-ceramic restoration. Combining lifelike materials and fracture resistant properties, LiSi® Press is as durable as it is lifelike. The flexibility of LiSi® Press makes it an excellent restorative method for anterior esthetics or posterior function.
Contraindications
Bridges which include molars, Maryland style bridges, and bridges which have a short vertical height that does not allow for adequate connector height.
Preparation
Anterior full-coverage crowns require a chamfer or shoulder margin. A circular shoulder is prepared with rounded inner edges or a chamfer at an angle of 10-30°: the width of the shoulder/chamfer is approx. 1 mm. Facial reduction is 1.5 – 2 mm; 1 – 1.5 mm lingual contact clearance. Incisal reduction is 1.5 – 2 mm with rounded internal line angles, and an incisal edge at least 1mm wide to permit optimum milling of the incisal edge during CAD/CAM processing.
Posterior full-coverage crown requires a chamfer or shoulder margin. A circular shoulder is prepared with rounded inner edges or a chamfer at an angle of 10-30°: the width of the shoulder/chamfer is approx. 1 mm. Occlusal reduction is 1.5 – 2 mm: axial reduction (buccal, lingual, and interproximal) is 1.5 mm with rounded internal line angles.
Cementation
LiSi® Press layered – can be cemented using a resin reinforced glass ionimer such as RelyX™ Luting cement. Or bonded using a resin cement when extra strength is needed due to lack of retention on the prep, use a resin cement such as RelyX™ Unicem or RelyX™ Ultimate.
Tech Notes
If adjustments are needed, use fine diamonds with water and light pressure. Always remove the crown when adjusting or bond/cement crown before adjustments are made.
Codes
- D2740 Crown
- D2610 Inlay for 1 surface
- D2620 Inlay for 2 surfaces
- D2630 Inlay for 3 surfaces
- D2962 Labial Veneer
- D2783 Crown 3/4 Porcelain Ceramic (does not include veneers)
