Evaluation of the Behavior of Two CAD/CAM Fiber-Reinforced Composite Dental Materials by Immersion Tests

Abstract

Fiber-reinforced composites are used as restorative materials for prosthetic oral rehabilitation. Gastroesophageal reflux disease (GERD) is an accustomed affection with various oral manifestations. This study aimed to evaluate the behavior of two high-performance CAD/CAM milled reinforced composites (Trinia™, TriLor) in artificial saliva at different pH levels through immersion tests, and to determine if changes in mass or surface morphology at variable pH, specific for patients affected by GERD, appear. After investigating the elemental composition and surface morphology, the specimens were immersed in Carter Brugirard artificial saliva for 21 days at different pH values (5.7, 7.6, and varying the pH from 5.7 to 3). The values of the weighed masses during the immersion tests were statistically processed in terms of mean and standard deviation. Results suggested that irrespective of the medium pH, the two composites presented a similar mass variation in the range of −0.18 (±0.01)–1.82 (±0.02) mg after immersion, suggesting their stability when in contact with artificial saliva, an aspect which was also highlighted by scanning electron microscope (SEM) analysis performed on the immersed surfaces. Novel composite biomaterials can be a proper alternative for metal alloys used for prosthetic frameworks in patients suffering from GERD.

3-D Printed space maintainers - A review

“…32 It has been recommended for a wide range of aesthetic permanent metal-free dental prosthesis restorations on implants, including bridge frames, full-arch implant supra structures, and removable partial dentures. 33 In order to provide safe appliances for patients with particular needs who need routine magnetic resonance imaging (MRI) in the head area to monitor certain conditions like epilepsy or vascular issues, Beretta and Cirulli 34 designed a metal-free CAD-CAM device. To immediately bond to the palatal surface of the first primary molar, they used Trilor to build a Nance palatal arch space maintainer.…”

Materials and manufacturing techniques trends in prosthetic dentistry.

“…Taking these things into account, F. Bechir et al [12] evaluated the behavior of two highperformance CAD/CAM milled FRC dental materials, namely Trinia and TriLor, in simulated saliva at pH values specific for patients affected by GERD, through immersion tests, in order to determine if there are any changes in terms of weight or surface morphology. The pH values of the Carter Brugirard synthetic saliva used for testing the materials were 5.7, 7.6, and a varied pH (two days immersion in pH 5.7 and one day in pH 3).…”

“…The authors, who also refer to the limits of their study [12], concluded that FRC biomaterials can be seen as a suitable alternative to the metallic ones used for prosthetic frameworks, and represent a feasible alternative for the oral rehabilitation of patients suffering from GERD.…”

Biomechanical behavior of posterior metal-free cantilever fixed dental prostheses: effect of material and retainer design

“…Delamination, debonding, and fracture have been described as the most common clinical failure modes of FRC RBFDPs [27]. The key criteria determining the performance of FRC are fiber volume, fiber position, and fiber orientation, which have been reported through numerous load-to-failure testing [27,28].…”