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GC Initial LiSi Press: New Pressable Ceramic by Lab Experts

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GC Initial® LiSi Press

High Strength Lithium Disilicate with HDM Technology
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Cost-Effective Long Term Restorative Alternative

GC Initial LiSi Press: New Pressable Ceramic by Lab Experts

GC Initial™ LiSi Press is a new high strength lithium disilicate ingot from GC America with HDM (High Density Micronization) Technology. This proprietary new technology provides unsurpassed physical properties and superior aesthetics.


The New Pressable Ceramic Endorsed by Lab Experts


GC America has released GC Initial LiSi Press, to offer dental laboratories a more aesthetic, stable and easy to use solution. With nearly 100 years of experience in dental materials, GC is known worldwide for its innovative technology, endorsed by clinicians and technicians alike.

The HDM Technology found inside GC Initial LiSi Press utilizes equally dispersed lithium disilicate micro-crystals to fill the entire glass matrix rather than using traditional larger size crystals that do not take full advantage of the entire matrix structure. As result, GC Initial LiSi Press is a formidable combination of strength and aesthetics, making it suitable for all types of dental restorations. Most importantly, this technology allows the product to be stable and strong, without distortion or a drop in value.

GC Initial LiSi Press is also perfectly optimized to be used with the already proven GC Initial LiSi veneering ceramic to provide your patients with the strongest, most aesthetic, and stable option available.

GC Initial LiSi Press properties


  • Unsurpassed Flexural Strength (>450MPa) with HDM Technology
  • Unparalleled aesthetics
  • Rich, warm, and bright colors with excellent fluorescence
  • Virtually no reaction layer when divested which allows cleaner presses
  • Low abrasion
  • Optimized to be used with the proven GC Initial™ LiSi veneering ceramic and GC Initial™ Lustre Pastes NF
  • Seamless learning curve
  • Lower solubility than other leading brands
  • Material and color stability after repeated rings
  • Wear resistant


In the back of the mouth, these restorations don’t look great, they look beautiful.

Dane Barlow, Dental Technician


  1. WATCH 


In this brief and informative video, Dental Technician, Dane Barlow, reviews the GC Initial LiSi Press System and demonstrates investing and pressing as well as pressing parameters, while sharing some useful tips and recommendations for getting familiar with the material.

Duration: 7 minutes


The New Pressable Ceramic Endorsed by Lab Experts




Learn Online


Get a comprehensive overview of new aesthetic dental ceramics in this On Demand webinar presented by Dr. Miles Cone, Prosthodontist and Certified Dental Technician and Lucas Lammott, Dental Lab Owner and Technician.

Game Changer: Exploring New High-Strength Aesthetic Dental Ceramics

Presenters: Dr. Miles Cone and Lucas Lammott

Free Self-Study

Earn 1 CE credit

Duration: 1 hour


The mandate on today’s dental clinicians to deliver predictable high-strength and highly aesthetic restorations is continually increasing. Lithium disilicate glass ceramic has been readily accepted as the standard restoration of choice by technicians for meeting the expectations of the dentists they work with and their patients. With the introduction of revolutionary new lithium disilicate systems, additional options to satisfy the demand for improved treatment outcomes are now available to the dental laboratory technician. This CE webinar will utilize several case studies to illustrate the range of indications and benefits that these new high-strength materials possesses and to demonstrate how they are positioned to change the game for this class of dental ceramics.


Upon completion of this CE webinar, the student will have

  • Reviewed the physical properties of newly introduced press ceramics that contribute to the improved strength and aesthetics of the material
  • Determined the chairside/benchtop protocols that will ensure the highest quality final product at delivery
  • Applied new concepts and techniques with the dental clinic and laboratory