Non-Destructive Examination of Interfacial Debonding in Dental Composite Restorations Using Acoustic Emission

Li, Haiyan; Li, Jianying; Liu, Xiaozhou; Fok, Alex

doi:10.5772/51369

Cited by 3 publications

(2 citation statements)

References 37 publications

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“…Метод АЕ зазвичай використовували для вивчення стійкості до руйнування різних композитних матеріалів [22], дослідження інтерфейсу зуб/композит [23][24][25][26][27][28][29], аналізу полімеризаційних напружень і ступеня усадки [30][31][32][33][34][35].…”

Section: результатиunclassified

The Evaluation of Current Research on the Strength of Dental Restorative Composite Materials

Kukhta

Kyrmanov

2022

Ukr. Dent. Alm.

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The aim of the study: to analyze the sources of scientific and metric information on the state of research on the strength of dental composites for tooth restoration. It has been determined that the range of composite materials available on the dental market is very wide. They differ significantly in chemical, mechanical, physical, and biological characteristics, operating properties, techniques of their usage. All this requires special training to use the composites effectively and to get high quality restoration results. The optimal choice of material and suitable technique taking into account a particular clinical situation can increase the durability of restorations and prevent the development of complications that largely depends on the strength characteristics of composites. At present, the problem of selecting and creating the perfect filling material has not been completely solved that is confirmed by the large number of new developments in materials science. At the same time, composite polymers are gaining ground in dental practice. The new concept of adhesive preparation of dental tissues before inserting filling material and improving the properties of the composite materials themselves contribute to the maximum preservation of healthy dental tissues, increase the aesthetics, durability and functionality of dental restorations. It has been determined that the mechanical strength characteristics of composite materials play a significant role in the longevity/durability of restorations depending on different chewing force and occlusal loading. It is important to investigate factors, which may cause the destruction of dental composites during the functional loading. The physical and mechanical properties of dental composites are impacted by a number of factors, including the type of polymer matrix, the amount of material takes, size and distribution of the filler, the state of the bond between the filler and the matrix, the degree of polymerization. The choice of a material also depends on a number of characteristics in terms of the combination of main components. Since the material parameters set by the material manufacturers can not be changes, the deep understanding of its properties will help to choose the best material in each clinical situation. The main physical properties of dental composites include compressive and tensile strength, modulus of elasticity, coefficient of thermal expansion, wear resistance, polymerization shrinkage, X-ray contrast, density and thixotropy, optical effects (transparency, fluorescence, etc.). The AE method based on the registration of elastic waves arising from the formation, change and destruction of the structure of various materials, is currently the most effective for studying the processes and stages of development of material defects. It enables in detecting initial changes in the material structure, the initial location of defects, the direction of their spreading and determining the maximum strength of the material. The advantages of this method include the ability to obtain information about the destruction in the early stages, its high accuracy and sensitivitys. The AE method is commonly used to study the resistance to destruction of various composite materials, the study of the tooth / composite interface, the analysis of polymerization stresses and the degree of shrinkage.

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Section: результатиunclassified

The Evaluation of Current Research on the Strength of Dental Restorative Composite Materials

Kukhta

Kyrmanov

2022

Ukr. Dent. Alm.

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“…Метод АЕ зазвичай використовували для вивчення стійкості до руйнування різних композитних матеріалів [3], дослідження інтерфейсу зуб/композит [2,8,12], аналізу полімеризаційних напружень та ступеня усадки [4,7,9].…”

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Evaluation of brittleness of restorative materials of light polymerization based on the analysis of signals obtained by acoustic emission method.

Kukhta,

Mykyievych

2024

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Topicality. A large number of light polymerization materials used in dentistry for the restoration of both anterior and canine teeth due to their aesthetic and mechanical properties determine the relevance of their comparative studies. Any restorative dental material, similarly to natural teeth, must possess sufficient mechanical durability in order to function in the oral cavity over an extensive period of time. In view of this, investigation of mechanical properties of such materials is the clinical task of paramount importance. The objective of the research is to analyse strength characteristics and features of destructive processes of lighthardening composite materials under three-point pressure with the application of the acoustic emission method (AE). Materials and methods. Samples were made from composite filling materials Latelux, Tetric N-Ceram, Charisma Classic, Filtek Z250, which were afterwards pressed until their complete destruction on the CBP-5 machine. In the process of fracture initiation and development signals were recorded by a portable eight-channel SKOP-8M measuring system. Flexural strength and elastic modulus were determined, in addition to dynamics of material fracture being studied by the acoustic emission method. Results. It has been established that the nature of the destruction of Latelux, Tetric N-Ceram and Charisma Classic materials is elastic and plastic at the initial stage of pressure, with the transition to brittle during its further growth, whereas the destruction of the Filtek Z250 material is brittle. Conclusion. The signals accompanying the destruction of the Tetric N-Ceram composite appear to have the highest amplitude and energy, while those accompanying the destruction of Latelux demonstrate the lowest amplitude and energy. Tetric N-Ceram nanohybrid composite shows the highest resistance to destruction. Key words: composite materials, strength, elasticity, pressure, destruction, acoustic emission.

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Estimation of Fracture Resistance of Nanocomposite Filling Materials Using Acoustic Emission Method

Kukhta

Kyrmanov

Makeyev

et al. 2022

WOMAB

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Non-Destructive Examination of Interfacial Debonding in Dental Composite Restorations Using Acoustic Emission

Cited by 3 publications

References 37 publications

The Evaluation of Current Research on the Strength of Dental Restorative Composite Materials

The Evaluation of Current Research on the Strength of Dental Restorative Composite Materials

Evaluation of brittleness of restorative materials of light polymerization based on the analysis of signals obtained by acoustic emission method.

Estimation of Fracture Resistance of Nanocomposite Filling Materials Using Acoustic Emission Method

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