A new articulatory model GENTIANE — elaborated from an Xray film built on a corpus of VCV sequences performed by a skilled French speaker — enabled us to analyse coarticulation of main consonant types in vowel contexts from a degrees of freedom approach. The data displayed an overall coarticulatory versatility, except for an absolute invariance in the labio-dental constriction point. For conson...

BACKGROUND Bio cellulose is a byproduct of sweet tea fermentation known as kombusha. During the biosynthesis by bacteria cellulose chains are polymerized by enzyme from activated glucose. The single chains are then extruded through the bacterial cell wall. Interestingly, a potential of the Kombucha's byproduct bio cellulose (BC) as biomaterial had come into focus only in the past few decades. T...

background and aims. the aim of this study was to evaluate x-ray protection methods in dental offices in tabriz. materials and methods. in this study 142 dental offices were evaluated. a questionnaire-based method was used. the data was analyzed by descriptive methods. results. the least commonly used methods were leaded walls (4.9%) and film badges (16.9%) and the most commonly used methods we...

The capillary action of saliva occurs in the crevices around and between teeth and around dental restorations. Marginal leakage and denture retention caused by a thin film of saliva are aspects of capillary phenomena. Liquids in capillaries isolated from a reservoir showed an increase in surface tension and lower vapor pressure. The strength of thin films of human saliva was independent of ambi...

Introduction: Radiography plays an important role in the diagnosis of oral and dental disease and one of the most common diagnostic procedures in dentistry. Recent reports have raised concern about the increased use of ionizing radiation in dental imaging and the possibility of cancers. The effective dose of some dental radiographic examinations is high enough, so appropriate ...

OBJECTIVE In order to study dental structures in three-dimensional views, sequential microscopic sections are needed. Routine thin-sectioning needs equipment, it is time-consuming, expensive and cause sample wastage during sectioning. The acetate peel technique used for microscopic examinations of carbonate rocks and fossils was modified and successfully adapted for teeth. DESIGN A human toot...

UNLABELLED The need to develop new dental luting agents in order to improve the success of treatments has greatly motivated research. OBJECTIVE The aim of this study was to evaluate the diametral tensile strength (DTS) and film thickness (FT) of an experimental dental luting agent derived from castor oil (COP) with or without addition of different quantities of filler (calcium carbonate - CaC...

Introduction: Dental radiography as one of the most frequent type of radiological examinations is accepted for medical investigations due to their significant benefits nevertheless using ionizing radiation. It has lower radiation dose compared to another radiological examination but because of its high application for children, radiation dose needs attention. Based on affectin...

foods and drinks, and preventing erosion caused by episodes of prolonged exposure to weak acids (e.g. wines and black cola softdrinks) or short-term exposure to strong acids (e.g. reflux and vomiting). • serving as a reservoir for ions (calcium, phosphorus, and fluoride) for remineralization • controlling the oral microflora, through immunological (IgA), enzymatic, peptide and chemical mediator...

Dental hypersensitivity due to exposure of dentinal tubules under the enamel layer to saliva is a very popular and highly elusive technology priority in dentistry. Blocking water flow within exposed dentinal tubules is a key principle for curing dental hypersensitivity. Some salts used in "at home" solutions remineralize the tubules inside by concentrating saliva ingredients. An "in-office" opt...