Fracture Strength And Fracture Behaviour Patterns Of Cusp Replacing Fibre Strengthened Composite Restorations
Download Fracture Strength And Fracture Behaviour Patterns Of Cusp Replacing Fibre Strengthened Composite Restorations full books in PDF, epub, and Kindle. Read online free Fracture Strength And Fracture Behaviour Patterns Of Cusp Replacing Fibre Strengthened Composite Restorations ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
| Author | : H. J. Visser |
| Publisher | : |
| Total Pages | : 180 |
| Release | : 2015 |
| Genre | : Dentistry |
| ISBN | : |
OBJECTIVES : To investigate and compare, in vitro, the fracture behaviours of three types of cusp-replacing posterior composite resin restorations. METHODS : Standard preparations for posterior composite restoration of the mesio-lingual cusp were cut on seventy- five extracted lower left first and second molars and restorations placed. Group A (control, n =25) with a conventional posterior composite resin, Group B (n=25): resin reinforced with nano-scale electrospun glass fibres Group C (n=25) :resin reinforced with a fibre substructure. Specimens were thermocycled for 500 cycles between 5°C and 55°C with a dwell time of 30 seconds, then embedded in plastic cylinders in acrylic resin. The specimens were loaded in a universal testing machine at a 30° angle to the long axis of the tooth until fracture occurred. Fracture patterns were highlighted by staining, studied under a microscope and classified as favourable (restorable) or unfavourable (non-restorable). Sub-classification included adhesive and cohesive failures. RESULTS : Group C exhibited significantly more “restorable” fractures. Group B displayed significantly more “nonrestorable” fractures. Fracture patterns differed significantly between the two fibre-strengthening techniques. (Fisher’s Exact Test p = 0.05) CLINICAL SIGNIFICANCE : Resin restorations reinforced with glass-fibre substructures are more readily repaired after fracture, saving tooth structure, and reducing costs to the patient.
| Author | : Sanjay Mavinkere Rangappa |
| Publisher | : Springer |
| Total Pages | : 212 |
| Release | : 2022-04-21 |
| Genre | : Technology & Engineering |
| ISBN | : 9789811606441 |
This book presents a unified approach to fracture behavior of natural and synthetic fiber-reinforced polymer composites on the basis of fiber orientation, the addition of fillers, characterization, properties and applications. In addition, the book contains an extensive survey of recent improvements in the research and development of fracture analysis of FRP composites that are used to make higher fracture toughness composites in various applications.The FRP composites are an emerging area in polymer science with many structural applications. The rise in materials failure by fracture has forced scientists and researchers to develop new higher strength materials for obtaining higher fracture toughness. Therefore, further knowledge and insight into the different modes of fracture behavior of FRP composites are critical to expanding the range of their application.
| Author | : Mohd Nasir Tamin |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 244 |
| Release | : 2012-01-03 |
| Genre | : Science |
| ISBN | : 3642236596 |
This monograph presents recent research findings on fracture properties and behavior of the composites, and their damage and cracking process under both quasi-static and impact loading conditions. Theoretical treatment, experimental investigation and numerical simulation aspects of the mechanics of composites, including sandwich structures are included.
| Author | : Shakeel Ahmed |
| Publisher | : John Wiley & Sons |
| Total Pages | : 450 |
| Release | : 2019-11-19 |
| Genre | : Technology & Engineering |
| ISBN | : 1119555299 |
Composites are materials made from two or more constituent materials with significantly different physical or chemical properties. The two materials combine together to give a new material with higher strength, toughness, stiffness, but also a higher resistance to creep, corrosion, wear or fatigue compared to conventional materials. It is composed primarily of a matrix i.e. a continuous phase which is armoured with secondary discontinues reinforcement phase. These materials have been used in a variety of products viz. spacecrafts, sporting goods, catalyst, sensors, actuators, biomedical materials, batteries, cars, furniture, aircraft components, etc. This book focusses on processing, properties of various types of composite materials, as well as their environmental engineering applications. This book examines the current state of art, new challenges, and opportunities of composites in environmental engineering. The chapters in this book covers nearly every topic related to composites in environmental engineering in four broad perspectives: (i) classification of composites (ii) green/hybrid synthesis and characterization of nano and biocomposites (iii) processing of composite materials (iv) state-of–the-art in fabricating the composites - nano and biocomposites - for environmental applications.
| Author | : Takashi Matsumoto |
| Publisher | : |
| Total Pages | : 550 |
| Release | : 1998 |
| Genre | : |
| ISBN | : |
| Author | : Robert Bruce McKee |
| Publisher | : |
| Total Pages | : 194 |
| Release | : 1967 |
| Genre | : Fracture mechanics |
| ISBN | : |
A new theory for the failure of parallel fiber reinforced composites is proposed. Failure is defined as the rapid propagation of a crack transverse to the fibers. The crack is nucleated by the enhancement of stress in the fibers surrounding a random break. Crack propagation occurs when the overall stress is high enough that the expected number of new breaks around a typical crack nucleus is at least one. Existing theories for failure are discussed. The results of previous research on glass and other fine filaments are analyzed. The stresses in fibers near a crack nucleus are calculated. An experimental program using extremely long speciments of parallel fiberglas in epoxy matrix verified the predictions of the theory for strength as a function of time and specimen size, tensile extension to failure and mode of fracture. Study of two dimensional transparent composites under load verified that failure occurred at the size of crack nucleus predicted by the theory.
| Author | : Marco Ferrari |
| Publisher | : MODERN DENTISTRY MEDIA |
| Total Pages | : 174 |
| Release | : 2008 |
| Genre | : Crowns (Dentistry) |
| ISBN | : 0620403918 |
| Author | : Wen-Chiang Chung |
| Publisher | : |
| Total Pages | : 330 |
| Release | : 1987 |
| Genre | : Fibrous composites |
| ISBN | : |
| Author | : I. B. Tariah |
| Publisher | : |
| Total Pages | : |
| Release | : 1988 |
| Genre | : |
| ISBN | : |
| Author | : Pascal Magne |
| Publisher | : Quintessence Publishing (IL) |
| Total Pages | : 414 |
| Release | : 2002 |
| Genre | : Medical |
| ISBN | : |
Guided by the philosophy of biomimetics, the authors combine sound biologic principles with an overriding respect for the natural intact tooth to achieve esthetic satisfaction in the restoration of the anterior dentition. A checklist of fundamental esthetic criteria is presented, and treatment planning, diagnostics, tooth preparation, laboratory procedures, adhesive luting procedures, and maintenance protocols are carefully detailed.
