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Dental Denture base resin - Formlabs

Ref.: RS-F2-DNBASE-OP

299.00 €

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Approximate delivery date: Friday 13 December - Wednesday 18 December

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Digital Denture Base resin is part of a line of dental-specific resins from the renowned manufacturer Formlabs. The use of 3D printing as a manufacturing tool is becoming more and more common in the dental field. Dental resins allow models of crowns and bridges, surgical guides, splints or retainers to be made with incredible accuracy and with very low material costs for each element, which allows the use of the printer with any of the dental resins to be amortised in a few months.

Formlabs environment for dentistry.

Image 1: Formlabs environment for dentistry. Source: Formlabs.

Digital Denture Base resin is a resin developed for the fabrication of complete dentures in combination with Digital Denture Teeth resin.

Digital Denture Base resin is a Class II biocompatible resin, i.e. it is a long-lasting biocompatible material, which enables the production of reliable and accurate 3D printed complete dentures.

This resin is responsible for imitating the gingiva. For this purpose, Formlabs has created 4 semi-translucent pink base shades (RP, LP, DP and OP) to achieve a realistic gingiva with natural margins and an aesthetic that is truly adapted to the patient:

Video 1: Dental applications with Digital Dentures resins. Source: Formlabs.

Thanks to the properties of the Digital Denture Base resin and the fact that it allows a resolution of 50 microns, the final parts have a very high surface quality and level of detail.

The manufacturing process with Digital Dentures resins is as follows:

Scan and design.
Export STL file.
3D printing preparation.
3D printing.
Post-processing.
Assembly.
Post-curing.
Final finishing.

As with other FormLabs resins, the printing process is very intuitive. For more information about the manufacturing process with Digital Denture Base resin, we recommend downloading the manufacturing guide in the "Downloads" section.

The combined use of Digital Denture Base and Digital Denture Teeth resin ensures the production of customised complete dentures with a realistic and high quality finish.

Complete dentures fabricated with Digital Dentures resins.

Image 2: Complete dental prosthesis fabricated with Digital Denture resins. Source: Formlabs.

The Digital Denture Base resin is a biocompatible material that allows it to be used for long periods of time. Therefore, this resin is not compatible with the Form 3 3D printer. In order to use the Digital Denture Base resin and to carry out the printing process optimally, the following materials and devices must be used:

Form 2 or Form 3B 3D printer.
It requires a LT resin tank if using the Form 2 printer and a V2 Form 3 resin tank if using the Form 3B printer.
Dental Denture base Resin.
Form Wash or Finish Kit.
Form Cure.

To ensure the biocompatibility of Digital Denture Base resin, the use of dedicated tanks and finishing kits are required and should only be used with this and other Formlabs biocompatible resins.

Digital fabrication of prostheses is the future of dental technology, providing quality patient care and offering highly personalised and specific solutions.

General information
Manufacturer	FormLabs
Material	Photopolymer
Format	1 L
Technology	SLA / LFS
Wavelength	UV 405 nm
Compatible resin tanks	Form 2 / Form 2 LT / Form 3
Compatible 3D printers	Form 2 / Form 3B

Printing properties
Layer height	50 µm
Layer exposure time	-
Layer off time	-
Bottom layer exposure	-
Bottom layer count	-

Curing and washing properties
Washing time	10 min
Curing time	30 + 30 min
Curing temperature	80 ºC

Mechanical properties (uncured / cured)
Izod impact strength	- KJ/m²
Charpy impact strength	- KJ/m²
Elongation at break	- %
Tensile strength	- MPa
Tensile modulus	- MPa
Flexural strength	(ASTM D790) 50 - 65 MPa
Flexural modulus	- MPa
Surface hardness	-

Thermal properties (uncured / cured)
Softening temperature	- ºC

Other
HS Code	2916.1
Lifetime (since manufacturing)	24 M

Below, a series of usage tips are cited that must be taken into account at all times with the use of FormLabs resins:

Change cartridge

Changing the resin cartridge of the FormLabs printers is very simple, just close the top cap of the ventilation duct (vent) and remove the cartridge by holding it by the handle it has. Then the other is inserted and the vent plug is opened in case an impression is to be started. To avoid drips through the 3D printer, this process must always be carried out with the resin tank mounted.

Vent plug FormLabs

Image 1: Vent plug of the FormLabs cartridges. Source: FormLabs

After finishing each impression the vent plug must be closed so that the resin maintains its properties. In addition, if you don't use the printer for some time, you should keep the cartridge in its original box to keep the properties of the resin intact.

Resin tank

Each type of resin must have its resin tank, which must be changed after using 2L of resin. FormLabs has developed a more powerful tank, the Resin Tank LT, which has a life up to 20 times longer than the standard tank.

FormLabs Resin Tank LT

Image 2: FormLabs Resin Tank LT. Source: FormLabs

To protect and store the excess resin in the tank after each printing, FormLabs supplies a lid that ensures a perfect closure. Once the tank is closed, it is recommended to store it (with resin and lid) in the original box so that the resin doesn't lose its properties when exposed to UV rays for a long time. Another point to keep in mind is that the tanks can't be cleaned with any cleaning product or similar (for example, isopopyl alcohol), since they lose certain qualities that can cause continuous failed impressions.

FormLabs Resin Tank

Image 3: FormLabs Resin Tank. Source: FormLabs

Failed printing

When an error occurs in printing may be because solid parts of a previous printing have fallen to the resin tank. In this case, a spatula at 45° must be passed through the printing tank, gathering all the solid parts in a corner and removing them. To ensure that the tank resin doesn't contain any solid parts, the resin should be cast with a 190 μm paper filter. Once cast, it is put back into the tank and it is ready to be used again.

Video 1: Clean resin tank. Source: FormLabs

Isopropyl alcohol

Isopropyl alcohol is the key to the washing and post-processing of parts and you should know when it is time to change it. In the Finish Kit the moment to change it's when the IPA (Isopropyl Alcohol) is so saturated with resin particles, that after washing the pieces are still sticky. At that point you must remove all the liquid, clean the container well and throw new IPA, but never fill in on the previous one.

Finish Kit FormLabs

Image 4: Finish Kit FormLabs. Source: FormLabs

In the Form Wash, the wash center itself indicates through its screen when it is time to change the isopropyl alcohol.

Video 2: FormLabs Ecosystem. Source: FormLabs

If you wish you can contract our SLA 3D printing training courses (online or in person) by contacting us through the contact form. The training is oriented to obtain a wide knowledge and know how to use the 3D SLA FormLabs printers from the beginning and t.hus avoid major errors.