搜索结果: 1-15 共查到“口腔正畸学 Ceramic”相关记录23条 . 查询时间(0.125 秒)
Ceramic Surface Polishing Techniques After Removal of Orthodontic Adhesive
Porcelain Polishing Orthodontic adhesive
2010/3/5
Objective: Verify the in vitro effectiveness of different porcelain surface polishing systems used after orthodontic debonding.
Materials and Methods: Restorations were simulated by 52 metallic sam...
Shear Bond Strength of Ceramic Brackets with Different Base Designs to Feldspathic Porcelains
Base design Ceramic bracket Debonding Porcelain Shear bond strength
2010/3/5
Objective: To test the hypothesis that the there is no difference between the shear bond strengths of different base designs of ceramic brackets bonded to glazed feldspathic porcelains.
Materials a...
Fracture Toughness and Surface Cracks —The Key to Understanding Ceramic Brackets
CERAMICS FRACTURE TOUGHNESS TENSILE STRENGTH
2009/2/11
The mechanical properties of ceramic brackets, particularly fracture toughness, are so different from those of metal brackets that their selection and handling requires a completely different set ...
Microleakage under Ceramic and Metallic Brackets Bonded with Resin-Modified Glass Ionomer
Microleakage Glass-ionomer Adhesive Metallic Ceramic
2010/3/5
Objective: To test the null hypothesis that there is no significant difference between the microleakage of adhesive interferences at the occlusal and gingival margins of both ceramic and metallic brac...
The fracture strength of ceramic brackets: a comparative study
Ceramic Fracture strength Fracture toughness Stress Load
2009/1/23
The purpose of this study was to compare the fracture strength of different ceramic brackets under different surface conditions and ligation methods using a torsional wire bending force. Five differ...
Bond strength of ceramic brackets with various bonding systems
Ceramic brackets Bonding systems Shear bond strength Tensile bond strength.
2009/1/14
The purpose of this investigation was to determine the shear and tensile bond strengths of various ceramic and ceramic-filled brackets in combination with commonly used bonding systems, One monocr...
Problems associated with ceramic brackets suggest limiting use to selected teeth
Ceramic Brackets Problems Indications Debonding
2009/1/13
Ceramic brackets became popular as esthetic appliances which could withstand orthodontic forces and resist staining better than plastic brackets. Several clinical complications may arise from the us...
Fracture strengths of ceramic brackets subjected to mesial-distal archwire tipping forces
Ceramic brackets Fracture strength
2009/1/13
This study tested the strength of ceramic orthodontic brackets subjected to mesial-distal tipping forces on five types of pre-adjusted, maxillary right central incisor ceramic twin brackets for bo...
Debonding forces applied to ceramic brackets simulating clinical conditions
Debonding forces Ceramic brackets Pliers Shear test
2009/1/12
Debonding ceramic brackets is an area of concern to clinicians. Reports of enamel fractures and cracks have raised questions about the safety of the procedures used to remove these attachments.
Shear/peel bond strength of repositioned ceramic brackets
Shear/peel bond strength Ceramic bracket Electrothermal debonding Bovine teeth Silane coupling agent Bracket repositioning
2009/1/12
Improper orthodontic bracket position may necessitate bracket removal and rebonding to establish correct bracket position. This procedure is necessary to use efficient orthodontic mechanics. The p...
Evaluation of the shear bond strength of different ceramic bracket base designs
Brackets Base Bonding Shear strength
2009/1/8
The purpose of this study was to compare the Ceramaflex bracket with a traditional ceramic orthodontic bracket with regard to shear bond strength and bond failure location. Forty newly extracted h...
Bond strengths of two ceramic brackets using argon laser, light, and chemically cured resin systems
Bond strength Ceramic brackets Resin Argon laser
2009/1/8
The present study compared tooth-bracket bond strengths using two types of ceramic brackets and three methods of polymerization: argon laser, conventional light, and chemical. Ninety extracted hum...
Comparison of shear bond strength of three bonding agents with metal and ceramic brackets
Ceramic and metal brackets Shear bond strength Glass ionomer cement
2009/1/7
Shear bond strengths of a light-cured composite resin, a light-cured glass ionomer cement, and a light-cured compomer used with metal and ceramic brackets were compared, and ARI scores were evalua...
Microbial Profile on Metallic and Ceramic Bracket Materials
Microbiota Metallic brackets Ceramic brackets
2008/12/26
The placement of orthodontic appliances creates a favorable environment for the accumulation of a microbiota and food residues, which, in time, may cause caries or exacerbate any pre-existing period...
Bond Strength of Disinfected Metal and Ceramic Brackets:An In Vitro Study
Disinfection Adhesive Bond Strength
2008/12/4
The aim of this in vitro investigation was to test whether disinfecting with Chlorhexamed® fluid had an influence on the shear bond strength of metal and ceramic orthodontic brackets. Metal and ...