Lithium disilicate glass ceramic in one standard short format across the brochure collection. Specify family and shade together; product images are illustrative, so confirm the final shade against a physical shade guide and product label.

Current assortment: 6 families, 36 options

Listed families and shades
Family	Optical character	Shades	Count
HT	High translucency	BL 1 · BL 2 · BL 3 · BL 4 · A1 · A2 · A3 · B1 · B2	9
MT	Medium translucency	BL 1 · BL 2 · BL 3 · BL 4 · A1 · A2 · A3 · B1 · B2	9
LT	Low translucency	BL 1 · BL 2 · BL 3 · BL 4 · A1 · A2 · A3 · B1 · B2 · C1	10
MO	Medium opacity	0 · 1 · 2 · 3 · 4	5
HO	High opacity	0	1
Opal	Opal options	1 · 2	2

This table lists the current range. Each shade page shows its packs and reference codes; availability is confirmed on enquiry.

Technical material properties

Brochure-reported values — page 8
Property	Unit	Specification	Reported actual value
Thermal expansion, 25–500 °C	10⁻⁶ K⁻¹	10.0 ± 0.5	10.0
Transformation temperature Tg	°C	510 ± 20	520
Bending strength	MPa	≥ 300	> 350
Chemical solubility	µg/cm²	< 100	< 40

Tg is the material transformation temperature, not a pressing or firing programme. Bending strength is not hardness.

Technical properties source: SPECTRA PRESS English brochure, pages 2–8. Consult the applicable instructions for use to select the technique and pressing programme.

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