TITLE

Phenomenological evaluation of fatigue cracking of dental restorations under conditions of cyclic mechanical loads

AUTHOR(S)
PIENIAK, DANIEL; NIEWCZAS, AGATA M.
PUB. DATE
June 2012
SOURCE
Acta of Bioengineering & Biomechanics;2012, Vol. 14 Issue 2, p9
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
This paper deals with microcracks in dental filling material and hard tissues of the teeth treated conservatively. Human teeth, removed due to orthodontic or surgical reasons, were the subject of those research studies. The studies have been conducted in vitro with the application of mastication simulator. It has been indicated that the number of cracks and the degree of their expansion increase with the number of load cycles. The number of microcracks of the filling material on the masticating surface is lower than in the deeper layers; however, they are more extensive. After applying a specified long load series a progressive increase of microcracks in the restoration material and their expansion in the contact zone with the dentine have been observed. It has been demonstrated that on the masticating surface the number of microcracks and their expansion were proportional to the number of load cycles
ACCESSION #
83432681

 

Related Articles

  • Fatigue and fracture studies need standard tests. White, Liz // European Rubber Journal;Nov2003, Vol. 185 Issue 11, p28 

    Reports on the outcome of a meeting to celebrate 50 years of fracture mechanics research on rubber. Need for better finite element analysis software to predict crack growth; Demand of rubber part makers for a standard test for measuring crack growth; Materials needed for technical developments;...

  • Fracture mechanics in a nutshell. Shaw, David // European Rubber Journal;Nov2003, Vol. 185 Issue 11, p28 

    Provides information on the science of crack growth. Fracture mechanics in rubber and elastomers; Most critical parameters in fracture mechanics; Results of studies on the strain energy on the crack tip.

  • Fatigue Life Prediction Based on Crack Closure and Equivalent Initial Flaw Size. Qiang Wang; Wei Zhang; Shan Jiang // Materials (1996-1944);2015, Vol. 8 Issue 10, p7145 

    Failure analysis and fatigue life prediction are necessary and critical for engineering structural materials. In this paper, a general methodology is proposed to predict fatigue life of smooth and circular-hole specimens, in which the crack closure model and equivalent initial flaw size (EIFS)...

  • Tissue differentiation and bone regeneration in an osteotomized mandible: a computational analysis of the latency period. Boccaccio, A.; Prendergast, P. J.; Pappalettere, C.; Kelly, D. J. // Medical & Biological Engineering & Computing;Mar2008, Vol. 46 Issue 3, p283 

    Mandibular symphyseal distraction osteogenesis is a common clinical procedure to modify the geometrical shape of the mandible for correcting problems of dental overcrowding and arch shrinkage. In spite of consolidated clinical use, questions remain concerning the optimal latency period and the...

  • LOW CYCLE FATIGUE LIFE ESTIMATIONS BASED ON THE CRITICAL DISTANCE STRESS THEORY. Toshio Hattori; Ab Wahab, Muhammad Amiruddin Bin; Minoru Yamashita // Advanced Materials Research;2014, Issue 891-892, p1773 

    Generally the critical distance stress theory was applied for the fatigue limit estimation of general structures using fatigue limit of smooth specimen (σw0), and threshold stress intensity factor range (△Kth). In this paper we extended this method for the estimation of low cycle...

  • The Energy based approach to fatigue. Ranganathan, Narayanaswami // Advanced Materials Research;2014, Issue 891-892, p821 

    This paper presents the energy based approaches developed to describe different aspects of fatigue. Different topics covered include fatigue crack initiation, crack initiation at a notch, multiaxial fatigue and fatigue crack propagation. Specific examples treated include, crack initiation at a...

  • Fatigue Life Prediction of Gear Transmission Based on ANSYS. WANG Tao; ZHANG Wei-zhong; XIE Chen; ZHANG Deng-xia; RU Yan // Advanced Materials Research;2014, Issue 1055, p161 

    With the study subject of the gear transmission in an unmanned system, several common methods of fatigue life prediction are analyzed. According to the actual running state, S-N nominal stress method is used to predict the fatigue life of the gears. Based on the S-N data of the gear material and...

  • Chord profile influence on the fatigue failure of a t-butt weld joint. de la Peña, Nelson Arzola; Araque de los Ríos, Oscar Javier // INGENIARE - Revista Chilena de Ingeniería;abr-jun2014, Vol. 22 Issue 2, p196 

    This paper shows a mathematical model assessment for fatigue crack propagation in a T-butt weld joint same thickness sheet. The assessment reached a closed-form solution for the dimensionless stress intensity factor expression, depending on crack size, for three types of weld chord profiles:...

  • Fatigue crack initiation and propagation in lotus-type porous material. Glodež, S.; Dervarič, S.; Kramberger, J.; Šraml, M. // Frattura e Integrita Strutturale;2016, Issue 35, p152 

    The investigation of fatigue strength of lotus-type structure with nodular cast iron as a base material using computational model is analysed in present study. The irregular pores distribution in transversal and longitudinal direction, regarding the external loading, is considered in the...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics