OBJECTIVE This experimental in vitro study compared marginal adaptation of indirect composite, glass-ceramic inlays and direct composite. MATERIALS AND METHODS Seventy-five recently extracted human molars were randomly divided into three groups (n=25) and mesio-occluso-distal cavities with the same dimensions were prepared in the teeth. Indirect composite and glass-ceramic inlays were fabrica...

OBJECTIVE To determine comparative safety and effectiveness of combinations of bearing surfaces of hip implants. DESIGN Systematic review of clinical trials, observational studies, and registries. DATA SOURCES Medline, Embase, Cochrane Controlled Trials Register, reference lists of articles, annual reports of major registries, summaries of safety and effectiveness for pre-market application...

We reviewed the results of 70 total hip replacements utilizing a modern ceramic on ceramic total hip prosthesis in 60 patients. The age of the selected patients ranged from 25 to 76 years (mean, 46 years). The diagnoses at the time of implantation were osteoarthritis (33 patients), avascular necrosis (29 patients), developmental hip dysplasia (four patients), rheumatoid arthritis (one), and pos...

Background and Aim: Different methods and materials are available for post and core (P&C) fabrication. We aimed to compare the fracture resistance and failure modes of endodontically treated maxillary central incisors restored with six different P&C systems. Materials and Methods: In this in-vitro study, after endodontic treatment and coronal preparation of 60 maxillary central incisors, six d...

OBJECTIVE The purpose of this study was to determine the effect of two extraoral computer-aided design (CAD) and computer-aided manufacturing (CAM) systems, in comparison with conventional techniques, on the marginal fit of monolithic CAD/CAM lithium disilicate ceramic crowns. STUDY DESIGN This is an in vitro interventional study. PLACE AND DURATION OF STUDY The study was carried out at the...

The purpose of this study is to compare the shear bond strength of different resin bases and artificial teeth made of ceramic or acrylic resin materials and whether tooth-base interface may be treated with aluminium oxide sandblasting. Experimental measurements were carried on 80 specimens consisting of a cylinder of acrylic resin into which a single tooth is inserted. An ad hoc metallic frame ...

The Spanish ceramic tile manufacturing sector (which also refers to raw material suppliers and producers of bodies, glazes, frits, engobes and pigments) is facing a most singular moment in its history. First of all, it needs to overcome the economic downturn that started in 2008 before going on to deal with the fierce competition from other countries emerging as competitive producers in the pos...

Restoring all facility operations after the 2001 Amerithrax attacks took years to complete, highlighting the need to reduce remediation time. Some of the most time intensive tasks were environmental sampling and sample analyses. Composite sampling allows disparate samples to be combined, with only a single analysis needed, making it a promising method to reduce response times. We developed a st...

PURPOSE To investigate the relationship between post and core build-up materials on the fracture resistance of endodontically treated teeth restored with different onlay restorations. METHODS 60 mandibular molars were endodontically treated and divided into three experimental groups that received one of the following onlay restorations: gold onlays, glass ceramic onlays (Empress I), or resin ...

Introduction and Summary Over the past year, ISEN funding has been utilized to make significant research progress towards the fabrication of a fully 3D-printed iron/solid oxide fuel cell (Metallic/multi-ceramic) batterygenerator system (Figure 1). Monies have gone towards the partial funding of one grad student/postdoc, Adam Jakus, in Ramille Shah’s Tissue Engineering and Additive Manufacturing...