Comparison of additive and subtractive CAD/CAM materials for their potential use as Tübingen Palatal Plate: An in-vitro study on flexural strength

Fracture Load of an Orthodontic Appliance for Robin Sequence Treatment in a Digital Workflow

“…As the TPP corresponds to a class IIa medical device according to the European Council Directive 93/42/ECC or European Medical Device Regulatory (MDR) 2017/745, only commercially available class IIa materials could be considered for the definitive TPP. This study employed the same technologies and materials as a previous study [ 12 ]. Both AM and SM technologies were taken into account, considering SLA (Stereolithography) and DLP for AM technologies.…”

“…Both AM and SM technologies were taken into account, considering SLA (Stereolithography) and DLP for AM technologies. Moreover, identical devices, materials, software, as well as manufacturing and post-processing steps as in previous work were used [ 12 ]. For manufacturing and post-processing, the manufacturer’s instructions were followed.…”

“…Despite their potential to resolve some problematic aspects related to the current TPP workflow, insufficient information about the suitability and performance of such materials for use in a TPP exists. A study comparing different potential CAD/CAM materials to the conventional material has been carried out [ 12 ]. Five different additive manufacturing (AM) materials and two subtractive manufacturing (SM) materials were evaluated by a 3-point bending test.…”

“…That study concluded that the tested CAD/CAM materials are not only comparable but exhibit superior mechanical properties compared to the conventional material. Although that study gives some insights into the mechanical properties, the performance in an actual TPP shape and related implications on the clinical application remains to be elucidated [ 12 ].…”

“…The objective was to find a material that is safe enough to ensure no breakage in the patient, as well as a high manufacturing speed, an affordable price and a good optical contrast for the fitting procedure. Therefore, TPPs of the same materials as tested by Aretxabaleta et al are evaluated in the present study in order to decide on the most appropriate material to be used in the future treatment of patients with RS [ 12 ]. Moreover, a colored CAD/CAM material for prototyping was considered.…”