نتایج جستجو برای: surface sealant
تعداد نتایج: 637282 فیلتر نتایج به سال:
Context Eroded dentin might present the opening of dentinal tubules, increasing permeability, and consequently dentinal hypersensitivity. Aims This study evaluated the permeability of dentin surfaces exposed to different levels of erosion and methods of surface protection. Materials and Methods Dentine samples (3 mm × 3 mm × 1 mm) were prepared from bovine incisors (n = 90) and divided into...
A variety of pit and fissure sealants are used clinically to protect the occlusal surfaces of teeth against dental caries. A new chemically activated bis-GMA type sea lant, Delton Pit and Fissure Sealant, has recently be come commercially available. The Delton Etching So lution supplied with the sealant contains 35 per cent orthophosphoric acid. The tensile bond strength of this sealant to e...
PURPOSE The objectives of this study were to investigate the fluoride levels in plaque and saliva before and after applying fluoride-containing pit and fissure sealants, and compare the fluoride release of 2 types of sealants at the different time intervals. METHODS Eighteen children ages 6 to 9 years were randomly divided into 2 groups: Group 1--sealant containing fluorosilicate glass (Helio...
PURPOSE The purpose of this study was to examine differences in microleakage in extracted human teeth when placing sealants using conventional acid etching or an acidic primer resin. METHODS Three experimental groupings were used: group 1--conventional acid etching with placement of light-cured sealant; group 2--application of acidic primer resin (Prompt-L-Pop) and light curing, followed by s...
OBJECTIVE Recently, self-etching fissure sealants have been introduced to reduce technical sensitivity; however, their efficacy should be assessed. The aim of this study was to assess of the microshear bond strength of self-etching and conventional fissure sealants. MATERIALS AND METHODS Thirty non-carious third molars were randomly divided into three groups (N=10). Microcylinders of Concise ...
Background and Aims: When composite resin polymerizes, shrinkage stresses tend to produce gaps at the tooth/ restoration interfaces. Surface sealants may reduce or avoid problems related to the marginal interface. The aim of this study was to evaluate the effect of two different surface sealants (Fortify and Optiguard) on the microleakage of class V resin composite restorations. Materials and ...
BACKGROUND Ventral root avulsion is an experimental model of proximal axonal injury at the central/peripheral nervous system interface that results in paralysis and poor clinical outcome after restorative surgery. Root reimplantation may decrease neuronal degeneration in such cases. We describe the use of a snake venom-derived fibrin sealant during surgical reconnection of avulsed roots at the ...
Clinical trials were conducted on the teeth of 148 children to determine the effectiveness of a clearly visible white pit and fissure sealant. A three-year-follow-up study showed a high retention rate for the sealant.
background: seroma formation is a common complication after breast cancer surgery. several techniques such as tube drainage, fibrin sealant and suturing methods have been employed to prevent or reduce seroma formation. capitonnage, a suturing method widely used following hydatid cyst removal, has been used after breast surgery in limited studies. our aim was to compare the effectiveness of tube...
Purpose: To date, fibrin sealant is considered to be one of the most effective substitutes to prevent post-operative fibrosis and to limit neuroma formation after nerve suture. Because fibrin sealant presents a number of drawbacks, more suitable techniques should be considered. The aim of this study was to functionally and histologically compare the efficiency of a fibrin sealant to a resorbabl...
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