Accurate, reliable casts in 2026 start with the right gypsum on your bench. Pink or Green Type IV die stone gives strong, low‑expansion working models you can trust.
Bright White Type II plaster keeps study casts quick and clean. A 4″ round lab vibrator smooths your mix and chases off bubbles, while learning how each gypsum behaves puts you firmly in control of your results.
| 4″ Round Lab Vibrator Gypsum Mixing Machine |
| Best Mixing Companion | Primary Use: Mixing gypsum/plaster for dental applications | Form / Physical State: Metal electric vibrating machine with 4″ round plate | Weight / Quantity: Single powered unit (100W vibrator; no powder weight) | VIEW LATEST PRICE | Read Our Analysis |
| 5 lb Pink Type IV Dental Gypsum Die Stone |
| Best Pink Die Stone | Primary Use: Type IV die stone for dental models, dies, precision castings | Form / Physical State: Pink gypsum powder in 5 lb sealable bag | Weight / Quantity: 5 lb bag of Type IV dental gypsum die stone | VIEW LATEST PRICE | Read Our Analysis |
| White Type II Dental Plaster 3 lb |
| Best for Study Models | Primary Use: Type II plaster for dental casts, study models, replicas | Form / Physical State: White plaster powder in 3 lb quantity | Weight / Quantity: 3 lb container of Type II dental plaster | VIEW LATEST PRICE | Read Our Analysis |
| 5 lb Type IV Green Dental Lab Stone |
| High-Strength Lab Stone | Primary Use: Type IV stone for dental lab models and professional casts | Form / Physical State: Green gypsum stone powder in 5 lb sealable bag | Weight / Quantity: 5 lb bag of Type IV dental lab stone | VIEW LATEST PRICE | Read Our Analysis |
| Earth Science Fast Acting Gypsum Soil Conditioner 5 lb |
| Not for Dental Use | Primary Use: Gypsum soil conditioner for improving lawn/plant soil | Form / Physical State: Finely ground, pelletized gypsum granules in 5 lb bag | Weight / Quantity: 5 lb bag of fast-acting gypsum soil conditioner | VIEW LATEST PRICE | Read Our Analysis |
More Details on Our Top Picks
4″ Round Lab Vibrator Gypsum Mixing Machine
Should you’ve ever poured a gypsum mix, watched bubbles rise, and felt your stomach sink, the 4″ Round Lab Vibrator Gypsum Mixing Machine is built for you. You don’t just want smoother casts. You want to stop wasting time fixing tiny voids and ugly surfaces.
Here’s where this small round unit quietly changes your day. Its 100W oscillator gives you strong, consistent vibration, so your gypsum flows into every detail. With the single knob, you slowly increase speed, watch bubbles rise, then disappear. The solid metal body, anti-skid plate, and rubber feet keep it steady, yet it’s compact enough to carry between operatories.
- Primary Use:Mixing gypsum/plaster for dental applications
- Form / Physical State:Metal electric vibrating machine with 4″ round plate
- Weight / Quantity:Single powered unit (100W vibrator; no powder weight)
- Setting / Working Outcome Time:Continuous operation; speed controlled for bubble-free mixing (no set time, but affects mix quality)
- Color / Appearance:Metal construction; standard lab equipment finish (color not specified)
- Target User / Setting:Dental labs and practices needing reliable gypsum/plaster mixing
- Additional Feature:100W oscillation power
- Additional Feature:Single-knob speed control
- Additional Feature:Anti-skid rubber base
5 lb Pink Type IV Dental Gypsum Die Stone
Should you want a strong, reliable die stone that still gives you time to work, this 5 lb pink Type IV dental gypsum die stone is a comforting choice for both busy labs and careful hobbyists. You get a high strength material with moderate expansion around 0.15 percent, so your models stay accurate without feeling fragile in your hands.
You mix it at 21 ml water to 100 g powder, which keeps the paste smooth and easy to pour. With a 10 to 13 minute setting time, you can adjust details without rushing. Let it dry 24 hours, and it’s ready for precise dental, jewelry, or craft work.
- Primary Use:Type IV die stone for dental models, dies, precision castings
- Form / Physical State:Pink gypsum powder in 5 lb sealable bag
- Weight / Quantity:5 lb bag of Type IV dental gypsum die stone
- Setting / Working Outcome Time:10–13 min set; ~24 hours to fully dry/harden
- Color / Appearance:Pink Type IV gypsum die stone
- Target User / Setting:Dental labs, arts and crafts users, jewelers
- Additional Feature:Included plastic scoop
- Additional Feature:Sealable storage bag
- Additional Feature:High compressive strength
White Type II Dental Plaster 3 lb
White Type II Dental Plaster, 3 lb, works best for you in case you want clean, accurate models without fighting clumps, stains, or uneven color. You get a bright white finish, so every margin, groove, and landmark stands out clearly. That makes your study models easier to read and your photos look more professional.
You just mix 35 ml of water with 100 g of powder, then stir until it’s smooth. In about 13 to 15 minutes, it sets enough for careful handling. After roughly 24 hours, it fully hardens, so you can trim, mark, or use it for dental training or craft projects.
- Primary Use:Type II plaster for dental casts, study models, replicas
- Form / Physical State:White plaster powder in 3 lb quantity
- Weight / Quantity:3 lb container of Type II dental plaster
- Setting / Working Outcome Time:13–15 min set; ~24 hours to fully dry/harden
- Color / Appearance:White Type II dental plaster with whitening additives
- Target User / Setting:Dental labs, students, arts and crafts users
- Additional Feature:Special whitening additives
- Additional Feature:Regular-set model stone
- Additional Feature:High-strength formulation
5 lb Type IV Green Dental Lab Stone
For detailed crown and bridge work, 5 lb Type IV Green Dental Lab Stone gives you the kind of control and strength you really need. You get a fine, dense stone that pours smoothly, settles cleanly, and sets into a very strong cast you can trust during tight adjustments.
You mix it at 21 ml of water to 100 g of powder, so you can repeat the same result every time. Working time feels comfortable for careful model prep, then it firms up in about 10 to 13 minutes. After a full 24 hours, it reaches its real strength for trimming, sectioning, or waxing.
- Primary Use:Type IV stone for dental lab models and professional casts
- Form / Physical State:Green gypsum stone powder in 5 lb sealable bag
- Weight / Quantity:5 lb bag of Type IV dental lab stone
- Setting / Working Outcome Time:10–13 min set; ~24 hours to fully dry/harden
- Color / Appearance:Green Type IV dental lab stone
- Target User / Setting:Dental laboratories, jewelers, arts and crafts users
- Additional Feature:Smooth, strong casts
- Additional Feature:All-purpose stone compound
- Additional Feature:House Brand manufacture
Earth Science Fast Acting Gypsum Soil Conditioner 5 lb
Gardeners who struggle with heavy, tight soil will find Earth Science Fast Acting Gypsum Soil Conditioner, 5 lb especially helpful, because it starts loosening clay and compact ground almost right away. You spread it, water it in, and it quickly helps water and air move deeper into the ground. Roots find it easier to grow, so plants look stronger and greener.
This gypsum comes as finely ground, pelletized granules, so it flows smoothly through most spreaders. It also helps repair salt-damaged areas and gently adds calcium, which supports plants that suffer from blossom-end rot. Nutri-Bond technology reduces nutrient runoff, and it’s safe for kids, pets, and all grass types.
- Primary Use:Gypsum soil conditioner for improving lawn/plant soil
- Form / Physical State:Finely ground, pelletized gypsum granules in 5 lb bag
- Weight / Quantity:5 lb bag of fast-acting gypsum soil conditioner
- Setting / Working Outcome Time:Loosens soil “immediately” after application (no formal curing time; lawn usable right away)
- Color / Appearance:Typical gray/white gypsum granules in pelletized form (color not explicitly specified)
- Target User / Setting:Homeowners/gardeners and lawn care users (all grass types)
- Additional Feature:Loosens compacted clay
- Additional Feature:Nutri-Bond runoff reduction
- Additional Feature:Pelletized for easy spreading
Factors to Consider When Choosing Dental Gypsums
Whenever you select a dental gypsum, you’re not just picking a powder, you’re shaping how every model, cast, and appliance will turn out. You’ll want to consider the gypsum type and use, its strength and hardness, how much it expands and affects accuracy, plus how the working and setting times fit your routine. Color and visibility also matter, because you need to see fine details clearly and feel confident in every step you take.
Gypsum Type And Use
Two simple choices often shape your whole result with models and casts: the gypsum type you pick and how you plan to use it. At the point you match type to purpose, work feels smoother and results look cleaner.
If you’re pouring simple study models, Type II plaster usually makes sense. It uses more water, around 35 ml per 100 g, so it feels creamier and easier to vibrate into an impression. It’s less dense, though, so it’s better for cases that don’t face heavy trimming or fine margin checks.
For detailed crowns, bridges, or implant work, Type IV stone serves you better. It needs less water, about 21 ml per 100 g, then sets in roughly 10 to 15 minutes into a precise, stable cast.
Strength And Hardness
Although it’s easy to focus on color and setting time, the real heart of a good dental model lies in its strength and hardness. You need a cast that doesn’t chip the moment you adjust a contact or check an occlusal surface.
Strength usually means compressive strength. It shows how much pressure your gypsum can handle before it breaks. Type IV products give you high compressive strength, so they’re great whenever you need tough dies and long lasting models.
Hardness works hand in hand with strength. A harder surface resists wear during trimming, adjusting, and repeated try ins. Higher hardness often means lower porosity, so your casts feel smoother, hold fine detail better, and stay reliable while you work, not just at the time you pour them.
Expansion And Accuracy
Even though strength gives your model its backbone, expansion quietly decides how accurate that model will really be. You can have a rock hard cast, but in case it expands too much, your crown or denture won’t fit the way you hoped. That tiny expansion, usually around 0.15%, can decide whether a case feels smooth and easy or stressful and full of remakes.
Working And Setting Times
During the period you’re choosing a dental gypsum, working and setting times quietly shape how stressed or calm your day feels at the bench. Working time is your real window of control. Throughout this interval, the mix stays smooth and moldable, so you can vibrate, pour, and fine tune details without racing the clock.
Then, setting time takes over. In about 10 to 15 minutes, the material shifts from creamy paste to a firm, semi-hardened state. This timing affects once you can separate casts, trim, or move models safely.
You still need patience after that. True drying and full strength usually arrive around 24 hours later. Should you wait, you protect margins, keep fine anatomy, and avoid heartbreaking fractures.
Color And Visibility
At the moment you choose a dental gypsum, its color and visibility quietly shape how confident you feel at the moment you inspect your work. Color isn’t just about looks. It affects how clearly you see margins, bubbles, and fine grooves.
When you use bright white plasters, you get strong contrast that makes small flaws pop, so you can correct them early and calmly. Colored stones, like green or pink, help you separate diagnostic casts, working models, and try‑ins, so your bench stays organized and your mind feels clearer.
Opacity and hue also matter. Softer tones can cut glare and eye strain under intense lights. Stable, predictable color then supports clean photographic records, giving every image a consistent backdrop you can trust.
Mixing Ratio And Handling
Color helps your eyes relax and focus, but the way you mix and handle the gypsum decides how strong and accurate your models really turn out. At the moment you follow the right water to powder ratio, the material feels predictable, not stressful. For example, Type IV likes about 21 ml water per 100 g powder, while Type II plaster needs closer to 35 ml.
These numbers aren’t suggestions. They control setting time, surface hardness, and how sharp your margins look. As you mix, start slow, then increase speed a bit so bubbles rise and break. This gradual control gives you a smooth, uniform texture. With thorough blending and steady handling, you get more working time, fewer voids, and casts you actually trust in the chair.