搜索结果: 1-9 共查到“口腔正畸学 Fracture”相关记录9条 . 查询时间(0.125 秒)
Cusp Fracture Resistance of Maxillary Premolars Restored with the Bonded Amalgam Technique Using Various Luting Agents
Maxillary Premolars the Bonded Amalgam
2009/9/3
Objective. This in vitro study uses measurements of fracture resistance to compare maxillary premolars restored with the bonded amalgam technique using a new resin luting cement, glass ionomer, and re...
Occlusal Reduction in Jaw Fracture Management.
Morphology of Polycrystalline Alumina Brackets and its Relationship to Fracture Toughness and Strength
BRACKETS CERAMICS FRACTURE MORPHOLOGY FRACTURE TOUGHNESS TENSILE STRENGTH
2009/2/26
Inherent defects seen in the morphology of polycrystalline ceramic brackets severely limit their fracture strength. Only by improving the surface characteristics can those mechanical properties whic...
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 ...
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...
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...
Case Report：Facial asymmetry and early condylar fracture
Facial asymmetry Condylar fracture
2009/1/7
This report describes the surgical-orthodontic treatment of two adult females who exhibited dentofacial asymmetry. Their medical histories included early condylar fractures. Growth was disturbed o...
Fracture Strength of Ceramic Bracket Tie Wings Subjected to Tension
Fracture resistance Ceramic brackets
2008/11/26
One of the most common areas of ceramic bracket fracture is within the tie-wing complex. When an archwire is ligated into position, tensile forces are placed under the tie wing. However, no study,...
Fluoride Prophylactic Agents Effect on Ceramic Bracket Tie-Wing Fracture Strength
Topical fluoride treatments Fracture resistance
2008/10/30
Objective: To test the hypothesis that fluoride prophylactic agents do not affect the fracture strength and fracture morphology of the tie-wing complex of ceramic brackets.Materials and Methods: The f...