Influence of silver coated zeolite fillers on the chemical and mechanical properties of 3D-printed polyphenylene sulfone restorations.

Objectives: To investigate the chemical and mechanical properties of polyphenylene sulfone (PPSU) depending on its composition and manufacturing.

Methods: Unfilled-PPSU1 and with antimicrobial silver coated zeolites filled-PPSU2 specimens were made of granulate-GR, filament-FI, or printed-3D. Scanning microscopy and X-ray spectroscopy were performed.

3D printing of dental restorations: Mechanical properties of thermoplastic polymer materials.

In the seminal field of 3D printing of dental restorations, the time and cost saving manufacturing of removable and fixed dental prostheses from thermoplastic polymer materials employing fused filament fabrication (FFF) is gaining momentum. As of today, the additive manufacturing of the established semi-crystalline polyetheretherketone (PEEK) requires extensive post-processing and lacks precision. In this context, the amorphous polyphenylene sulfone (PPSU) may provide a higher predictability and reliability of the results.

Three-dimensionally printed and milled polyphenylene sulfone materials in dentistry: Tensile bond strength to veneering composite resin and surface properties after different pretreatments.

Statement Of Problem: Polyphenylene sulfone (PPSU) is a thermoplastic that can be processed using 3-dimensional printing. PPSU is new to dentistry, and scientific data on its properties are lacking.

Purpose: The purpose of this in vitro study was to test the surface properties and the tensile bond strength (TBS) between PPSU and a veneering composite resin in comparison with a polyetheretherketone (PEEK).

[Prevention of intraoperative miosis in femtosecond laser-assisted phaco surgery].

Introduction: Prevention of intraoperative miosis in hybrid (femtosecond laser-assisted) phacoemulsification is a relevant problem of cataract surgery.

Purpose: Development and clinical study of an effective method for preventing intraoperative miosis in hybrid (femtosecond laser-assisted) phacoemulsification.

Material And Methods: Hybrid phacoemulsification was performed in 300 patients (300 eyes).

[Results of secondary retropupillary-fixated intraocular lens implantation].

Unlabelled: Surgical treatment of intraocular lens (IOL) with late dislocation remains one of the current problems of ophthalmology.

Purpose: To evaluate specific morphofunctional changes in the eye after dislocated IOL exchange with retropupillary-fixated iris-claw IOL.

Material And Methods: Surgical outcomes of 150 patients (150 eyes) with in-the-bag IOL dislocation (122 eyes) or sulcus-fixated IOL dislocation (28 eyes) were analyzed.