Fixed
Our team of skilled technicians fabricate unmatched metal-based and all-ceramic restorations in our Maine-based dental laboratory. We offer highly esthetic crowns and bridges to fulfill anterior cases of varying difficulty. We are dedicated to crafting high-quality restorations out of the best materials available to ensure longevity and esthetics. We also offer veneers and PMMA provisionals.
IPS e.max®
IPS e.max®, a lithium disilicate glass-ceramic, is the most esthetic of all-ceramic options. It offers high customization as it can be fabricated as a full-contour monolithic or cut-back and layered with porcelain. This restoration provides lifelike esthetics due to four levels of translucency and is fracture resistant with a strength of up to 500 MPa. Made out of this innovative material, it is 2.5 to 3 times stronger than other glass-ceramics and has additional impulse ingots for maximum flexibility. This reliable restorative solution provides extreme beauty, longevity, and durability.
Indications
IPS e.max is the premium lithium disilicate, glass-ceramic restoration. Combining lifelike materials and fracture resistant properties, IPS e.max is as durable as it is lifelike. The flexibility of IPS e.max 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
IPS e.max 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)