Aim: The aim of this study was to assess the fracture resistance endodontically treated maxillary premolars with mesioocclusodistal (MOD) cavities supported by horizontal glass fiber posts. Methodology: Thirty three extracted were collected and grouped into three. MOD prepared all them treated. Teeth posts; vertical posts composite restoration alone in groups respectively. Fracture assessed usi...

The purpose of the present study was to investigate relationship between root trunk types (RTT) and periodontal attachment loss (PAL) on molars affected with Class III furcation involvement (FI). extracted teeth (169) maxillary (103) mandibular (66) in individuals severe advanced periodontitis were diagnosed as FI alveolar bone ≧70%. clinical records include patient’s age, gender, degree FIs ve...

The presented study illustrates the characterisation of several artificial materials (bedding, joint mortars, and plasters) belonging to masonries UNESCO site Panamá Viejo, located in Panama City (Panama). This monumental represents first Spanish settlement on Pacific Coast, founded 500 years ago, 1519. Through mineralogical petrographic analyses collected samples, as stereomicroscope polarized...

Objective: The aim of this study was to compare the push-out bond strength (BS) 2 different conventional fiber and glass posts in form bundles by using resin cement fracture types formed accordingly. Material Methods: Root canal treatment applied 48 extracted human premolars for test. teeth were divided into 3 post groups: Group 1: Biolight ST (conventional fiberpost), 2: RelyX 3: Plus (bundle ...

In the present research, occurrence of contamination by microplastics in water column was investigated 15 sample sites along rivers Guapimirim, Macacu and Maracanã—important that flow into Guanabara Bay, a very polluted estuarine environment Brazil. The correctidentified polymers were manually counted classified as to their morphology color using binocular stereomicroscope characterized ATR-FTI...

the aim of this study was to evaluate the effect of cyclic loading on the bond strength of quartz fiber posts to root canal dentin after different surface treatments of different regions of root canal dentin.forty-eight single-rooted human teeth were selected. post spaces were prepared and then the teeth were divided into four groups: g1: no treatment (control); g2: irrigation with a chemical s...

A new method and related sensory system used to determine the surface tension (γ) of a liquid investigated based on increase area (A) drop vibrated sinusoidally is presented. The materialization consists in specific device placed table microscope or stereomicroscope, both principle light reflection. analyzed deposited with dispenser metal plate, electrodynamically under action sinusoidal oscill...

The cobia is the only representative of the Rachycentridae family and, because of its zootechnical qualities, production of this fish has been implemented in several countries, such as the United States, Mexico and Brazil. Tuxophorus caligodes is a widespread parasite of marine fish worldwide. For the present report, 15 juvenile cobias were collected from net cages on a fish farm in Ilhabela, s...

INTRODUCTION The aim of this in vitro study was to compare the efficacy of two retreatment rotary systems in removal of gutta-percha (GP) and sealer from the root canal walls with and without use of solvent. MATERIALS AND METHODS Sixty single-canalled distal roots of mandibular molars were prepared and root filled with gutta-percha and AH26. Each canal was randomly allocated to receive one of...

Glass ionomer cement, besides being used as restorative material, can also be used as pit and fissure sealant. The use of glass ionomer cement as pit and fissure sealant has added benefit by its fluoride-releasing property that results in increased resistance of the fissures to demineralize. The capacity of a sealant to prevent microleakage into the fissure is important, since microleakage may ...