Question 1

How do I choose the right shade of acrylic resin teeth?

Accepted Answer

Our system uses 16 shades in four groups: A (reddish) A1–A4, B (yellowish) B1–B4, C (greyish) C1–C4 and D (bluish) D2–D4, with higher numbers indicating greater depth. Match the shade group first, then the depth. Match under near-natural daylight, keep the session short to avoid eye fatigue, use a neutral grey background, and have two people judge independently. Getting the group right matters more than getting the depth right — a wrong hue is far more noticeable than a slight depth difference.

Question 2

What is the difference between Type I soft and Type II hard casting wax?

Accepted Answer

Type I soft waxes — wax nets, pattern sheets, wax sticks, baseplate sheets, thin sheets, clasp wax, memory wax, bite registration wax, low-shrinkage wax, periphery wax and soft bite rims — deform easily and adapt well, so they suit periphery shaping, bite registration, boxing and clasp patterns. Type II hard waxes — crown wax, inlay wax, cervical wax, gypsum wax, wax blocks, neutral zone wax and hard bite rims — resist collapse during carving, so they suit crown and bridge patterns, inlay patterns and cervical refinement.

Question 3

What sheet thicknesses are available for casting wax?

Accepted Answer

Sheet thickness runs from 0.25 to 0.80 mm in 0.05 mm steps. Pattern sheets are 145 × 75 mm, available in 0.30, 0.35, 0.40, 0.45 and 0.50 mm. Thin sheets (0.25–0.35 mm) are used where fine adaptation matters; 0.40–0.50 mm is the general-purpose range; thicker sheets suit large denture base patterns that need more rigidity.

Question 4

How should I control the powder-to-liquid ratio for denture base resin?

Accepted Answer

The tolerance band matters more than the theoretical optimum. Weigh the powder to the recommended ratio first, then add monomer gradually, mixing as you go. Never pour in the full volume of liquid at once — if the mix goes too thin you have to add powder to recover. A resin powder with a sieved particle distribution wets more evenly and gives you a wider working window.

Question 5

How do I reduce shade variation between batches of resin teeth?

Accepted Answer

Two practical measures. First, use the same batch number for one denture or one order wherever stock allows — note it on the order and we will comply when inventory permits. Second, enforce first-in-first-out in your warehouse so individual specifications do not sit unused and change appearance over time.

Question 6

How should I select bur grit for a given stage?

Accepted Answer

Match grit to the stage: coarse for fast bulk reduction and initial shaping; standard for routine preparation and form refinement; fine for contour refinement and contact adjustment; super-fine for final surface preparation before polishing. Replace burs on cutting feel, not on appearance — once the abrasive dulls, operators instinctively apply more pressure, and that is exactly when run-out and unintended cutting occur.

Technical and sourcing FAQ

Practical answers from thirty years at the bench

Ordering, samples and shipping

When you need more than a datasheet

Materials pairing

Wax handling

Burs and discs

Troubleshooting

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