Failure load of milled, 3D-printed, and conventional chairside-dispensed interim 3-unit fixed dental prostheses.

Statement Of Problem: New techniques and materials for the laboratory fabrication of interim fixed dental prostheses have gained in popularity, yet how their failure strengths compare with conventional chairside materials is unclear.

Purpose: The purpose of this in vitro study was to compare the strength of computer-aided design and computer-aided manufacturing (CAD-CAM) milled polymethylmethacrylate (PMMA) or 3-dimensionally (3D) printed bis-acryl interim fixed dental prostheses with a traditional chairside-dispensed autopolymerizing bis-acryl prosthesis while taking into account the effect of loading rate and storage time.

Material And Methods: A dentiform mandibular second premolar and second molar with a first molar pontic were prepared and scanned.

Denture Hygiene as It Relates to Denture Stomatitis: A Review.

The wear of dentures carries with it the possibility of an inflammatory response by the denture-bearing tissues. Lack of or improper hygiene has been shown to contribute to denture stomatitis (DS). Although essential, denture hygiene is often overlooked by patients or performed improperly.

Strength and stiffness of interim materials and interim fixed dental prostheses when tested at different loading rates.

Statement Of Problem: How the loading rate might affect the mechanical properties of interim materials and interim fixed dental prostheses is unclear.

Purpose: The purpose of this in vitro study was to compare the material stiffness, material strength, and structural strength of interim 3-unit fixed dental prostheses fabricated from 3 interim materials when stressed at different loading rates.

Material And Methods: Bar-shaped specimens and anatomically correct interim 3-unit fixed dental prostheses with a modified-ridge lap pontic were fabricated from polyethyl methacrylate resin (Trim) and 2 bis-acrylic composite resins (TempSmart; Integrity) (n=10).

Surface Roughness of Milled Lithium Disilicate With and Without Reinforcement After Finishing and Polishing: An In Vitro Study.

Purpose: To determine the efficacy of various finishing and polishing techniques on the surface roughness of two computer-aided design/computer-aided manufacturing (CAD/CAM) materials, lithium disilicate (IPS e.max), lithium disilicate reinforced with lithium aluminosilicate (Straumann n!ce™), and a stackable low-fusing nanofluorapatite glass ceramic (Ceram).

Materials And Methods: Flat specimens (n = 12) per treatment group were fabricated 2 mm thick, 15 mm in length, and 12mm in width.

Comparison of digital surface displacements of maxillary dentures based on noninvasive anatomic landmarks.

Statement Of Problem: Artificial markers called fiducials are commonly used to orient digitized surfaces for analysis. However, when these markers are tangible and placed in the region of interest, they may alter surface topography and influence data analysis.

Purpose: The purpose of this in vitro study was to apply a modified digital surface fitting method based on anatomic landmarks to evaluate denture accuracy and to use 2 different denture processing techniques to evaluate the method.