Do tooth-supported zirconia restorations present more technical failures related to fracture or loss of retention? Systematic review and meta-analysis.

Objectives: This systematic review was performed to determine the main cause of technical failure of tooth-supported zirconia crowns and fixed partial dentures (FPDs), categorizing them as fracture/chipping or loss of retention/decementation.

Materials And Methods: Electronic and manual searches were performed for randomized clinical trials, prospective clinical trials, and prospective cohort studies that reported the technical failure rates of zirconia restorations. The Cochrane Collaboration risk-of-bias tool and Newcastle-Ottawa scale were used to assess the quality of the studies.

B-RAF PROTEIN IMMUNOEXPRESSION IN HEPATOCELLULAR CARCINOMA DUE TO HEPATITIS C VIRUS RELATED CIRRHOSIS.

Background: Hepatocarcinogenesis is a multistep process that lead to genetic changes in hepatocytes resulting in neoplasia. However, the mechanisms of malignant transformation seem to differ widely. To know carcinogenesis mechanisms is essential to develop new treatment and prevention methods.

Retrospective clinical and radiographic evaluation of restored endodontically treated teeth.

Objectives: The aim of this study was to perform a clinical and radiographic analysis of endodontically treated teeth (ETT) restored with cast metal posts (CMPs) or prefabricated glass fiber posts (GFPs) and crowns.

Materials And Methods: Fifty ETT were restored with 25 CMPs and 25 GFPs at a private dental clinic between 2001 and 2016. The restorations consisted of 12 all-ceramic crowns, 31 metal-ceramic crowns, and 7 composite resin crowns.

Do anterior and posterior teeth treated with post-and-core restorations have similar failure rates? A systematic review and meta-analysis.

Statement Of Problem: The association between tooth type, location in the dental arch, and selection of a post-and-core system for endodontically treated teeth is unclear. Information on the influence of these parameters on the failure rate of teeth treated with post-and-core restorations is needed.

Purpose: The purpose of this systematic review and meta-analysis was to assess the available evidence on the failure rates of anterior and posterior teeth treated with post-and-core restorations.

Digital smile design and mock-up technique for esthetic treatment planning with porcelain laminate veneers.

The use of digital tools offers a new perspective to daily clinical activities. The digital information serves as a starting point for a wax-up and intraoral mock-up, which is widely reported in literature as an objective and efficient communication tool among dentist, patient, and technician. This case report of a maxillary anterior rehabilitation demonstrates esthetic planning with the digital smile design (DSD) system and a direct mock-up technique.

Enamel and Dentin Surface Finishing Influence on the Roughness and Microshear Bond Strength of a Lithium Silicate Glass-Ceramic for Laminate Veneers.

Objectives. This study evaluated the influence of cavity surface finishing with diamond burs of different grit mounted on high-speed turbine and ultrasound on the roughness and microshear bond strength (MBS) of a lithium silicate glass-ceramic to enamel and dentin. Methods.

Mutational analysis of two boys with the severe perinatally lethal Melnick-Needles syndrome.

Melnick-Needles syndrome (MNS) (OMIM 309350) is a rare, X-linked dominant condition, caused by mutations in the filamin A gene (FLNA, on Xq28). In females, the syndrome presents with bone dysplasia and characteristic facial changes. Affected males may show two different phenotypes.

[Puerperal septic shock due to beta-hemolytic Streptococcus and Waterhouse-Friderichsen syndrome].

An exceptional case of a 15-year-old puerpera with septic shock caused by Group A beta-hemolytic Streptococcus and Waterhouse-Friderichsen syndrome is reported. The findings were observed at the necropsy. The characteristics of the diagnosis, pathogenesis and evolution of this puerperal infection (sepsis), associated with adrenal hemorrhage and insufficiency are reviewed in this paper.