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Most lab managers can recall a case where a monolithic crown left the furnace a shade off, or where a technician spent half an hour dipping copings in coloring liquid only to get uneven results. Pre-shaded discs exist to take that variable out of the workflow, and Aidite Honorzir SHT pre-shaded zirconia is one of the options labs keep running into when they shop for that kind of material. Aidite, a zirconia maker based in Qinhuangdao, China, sells its Honorzir range through dental distributors in several markets, and the SHT version is aimed at labs that want translucency and a factory-set shade in the same disc.
Before you add any new zirconia to the milling queue, it helps to understand what the name actually describes, which restorations it suits, and how it fits beside the multilayer materials many labs already stock.
What Does SHT Mean in Aidite Honorzir SHT Pre-Shaded Discs?
SHT stands for super high translucent. Distributor catalogs list the colored version as SHTPC, short for super high translucent plus color, and a white version as SHTPW. In Aidite’s own advertising the series name sometimes appears as two words, Honor Zir, while many resellers print it as one. Whichever spelling you see, the product family is the same.
The “plus color” part is what matters for daily production. Aidite Honorzir SHT pre-shaded discs come with the shade already built into the material, so the milled restoration goes from the mill to the sintering furnace without an immersion or brushing step for internal color. Distributor listings describe the pre-shading as removing the staining process, which is the main reason labs consider it. Fewer manual steps mean fewer places for shade drift to creep in between technicians or between shifts.
Which Restorations Are Pre-Shaded Zirconia Blocks from Aidite Indicated For?
A distributor listing for the SHTPC discs names inlays, posterior crowns, full-crown bridges, screw-retained bridges and screw-retained crowns as indications. Because indications can differ between translucency grades, read the instructions for use that ship with the exact disc you order, especially before committing to long-span work.
Pre-shaded zirconia blocks from Aidite are listed in 98 mm disc format, which fits most open CAD/CAM mills. Thickness options seen in distributor catalogs include 14 mm, 16 mm and 18 mm. Match the thickness to your tallest planned restoration plus the connector and sprue allowance your nesting software requires, rather than defaulting to the thickest disc on every job.
How Is a Single-Shade Disc Finished Compared with Aidite Multilayer Shaded Zirconia?
Shade availability for the SHTPC line follows the familiar A to D range (A1 through D4), plus a bleach option listed as Hollywood White. Each disc carries a single shade throughout, so a crown comes out of the furnace with the same color from cervical to incisal. Aidite multilayer shaded zirconia builds some natural variation into the blank itself. With a monochrome disc, the technician adds that variation after sintering, and the finishing method depends on where the tooth sits in the mouth.
Posterior units are usually finished with surface stain and glaze. A slightly warmer chroma at the cervical third, a touch of fissure stain and a glaze firing are often enough, because occlusal anatomy hides most of the uniformity. Anterior work is a different matter. Many technicians design a cut-back instead, milling the crown with the facial and incisal areas reduced so that veneering porcelain can be layered over the zirconia. The zirconia carries the load, while the porcelain supplies incisal translucency, halo effects and mamelon detail. Cut-back adds bench time and a ceramic layer that can chip, so use a veneering porcelain whose thermal expansion is matched to zirconia and fire it on the porcelain maker’s schedule.
Shade verification deserves its own routine. Compare the finished restoration with the same physical shade guide the clinic used, under daylight-balanced lighting with good color rendering, and judge value (brightness) before hue and chroma. Short glances work better than a long stare, since the eye adapts to a color within seconds. A shade photo with the reference tab in frame, taken under the same light, gives the clinic and the lab a common record.
Consistency between lots is the other half of the picture. A pre-shaded disc relies on the manufacturer holding pigment levels steady from one production lot to the next. Record the lot number against every case, and keep a small sintered and glazed reference sample from each lot you open. When a new lot arrives, mill and sinter a matching sample on the same program and set it beside the retained one. If the two differ, check furnace calibration before blaming the disc, because a drifting furnace can mimic a lot change.
Can You Get Natural-Look Zirconia from Aidite Without Heavy Staining?
Natural-look zirconia from Aidite starts with the right disc choice, but finishing still matters. A pre-shaded disc gives you the base shade; a light glaze or a touch of external stain on the occlusal anatomy and margins adds the variation that real enamel shows. Most technicians find they can keep characterization minimal on posterior work.
A few habits help the result look lifelike:
- Choose the shade from a recent shade photo taken with a reference tab, not from a written prescription alone.
- Avoid over-thick walls, since extra material reduces light transmission in super high translucent grades.
- Keep sintered surfaces clean and polish contacts before glazing.
- Thin the glaze layer over margins so it does not change the emergence profile.
Remember that higher-translucency zirconia generally trades some flexural strength for its optical behavior. Aidite’s published figures vary by grade, so confirm the strength value for SHT in the current data sheet before using it on long-span bridges or patients with heavy bruxism.
How Should Labs Mill and Sinter Super High Translucent Zirconia Discs?
Milling pre-sintered zirconia is routine for most labs, yet translucent grades reward care. Use sharp burs, follow the enlargement factor printed on each disc label so the restoration shrinks to the correct size, and keep the milling area free of dust from other shades that could contaminate a light disc. Handle milled units gently, since the chalky pre-sintered state is fragile.
Sintering is where shade and translucency are locked in. Program the furnace with the temperature curve and hold time listed in Aidite’s instructions for that specific product rather than reusing a profile from another brand. Speed sintering cycles can save hours, but only use one if the manufacturer has validated it for this disc, because rushing the cycle can change both color and translucency. Periodic furnace calibration helps keep shade results consistent from batch to batch.
What Should You Compare Before Switching Zirconia Brands?
Many labs that already buy TT multilayer zirconia online use it as a reference point when they trial an Aidite disc, even though TT is made by a different manufacturer, Upcera. Comparing products side by side on your own mill and furnace tells you more than any brochure. Mill identical crowns from each disc, sinter them on their recommended programs, and check fit, shade match and translucency against the same shade guide.
Look beyond the disc itself as well. Confirm that the distributor provides lot-specific documentation, enlargement factors and instructions for use. Check that the product’s regulatory labeling covers your market. Supply reliability matters too, because a disc that suits your cases is only useful if the next order arrives in the same shade.
Is a Pre-Shaded SHT Disc Worth Adding to a Lab’s Zirconia Range?
A pre-shaded SHT disc removes the coloring-liquid step, which takes one source of shade variation out of daily production. Final esthetics still depend on finishing, from stain and glaze on posterior units to cut-back and layering on visible anterior teeth. Logging lot numbers, keeping retained shade samples and checking strength figures and indications in the current data sheet will tell a lab whether the material holds up on its own cases.
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