- No: 1: Arizona's Best Dental Lab
PMMA Prototype and Provisional
PMMA temporary/ provisional can be used for a number of items in dental. PMMA stands for Polymethylmetacrylate which means acrylic which is used for many things in dental. It is a long term temporary material that can last up to 3-5 years but is not recommended. PMMA is usually used until final restoration is finished which can take weeks depending on what material is being used for the final. There are 2 PMMA options we offer which are Monochromatic and Multi-Layered. Monochromatic PMMA is one solid color throughout the restoration. Multi-Layered PMMA has a color gradient with different shades and looks more natural. PMMA is used for all spectrums of restorations that include but are not limited to temporary provisional full contour crowns, bridges, and full arch. PMMA is also used for screw retained and also known as implant crowns, bridges, and all-on-4/ all-on-6 full arch Prettau prosthetists. PMMA is also a good choice during recovery from implant surgery. While your jaw bone is going through Osseo-integration it is important that you are not putting too much impact while chewing food. A PMMA restoration is always good to be a first test while healing to see if any adjustments needs to be made to the final restoration we can see it through the temporary teeth and how it fits.
We produce our PMMA temporaries from the same STL files used to fabricate your patient’s final crown, providing patients an affordable provisional that mimics the occlusion and fit of the permanent crown.
No preparation is needed for provisionals. However, existing preparation of any type can be used.
Can be fabricated with pre-operative or prepared models. All shade guides are compatible and we can stain provisionals to match.
RECOMMENDED RELINE MATERIAL
Cold-cured methyl methacrylate
Cold Pac by Motloid
Palavit 55 by Kulzer
You should avoid any composites and ethyl methacrylate’s like Trim or Snap. Those materials only have a semi-chemical bond to the provisionals material. When repairing broken provisionals chairside, only methyl methacrylate should be used. The customer should remove the glaze by roughing up the surface with a coarse bur. Then apply cold cured methyl methacrylate to the surface.
Roughen temps with pumice.
Rinse and dry with air.
Apply a thin layer of GC Optiglaze going in one direction.
Bench dry for 20 seconds (air dry).
Polymerize for 90 seconds with hand held curing unit (a light box works best, but hand held light can be used with 2 cycles of 90 seconds on each surface).