A Comparative Three- and Bi-dimensional Research of the Marginal Fit of Pressed Lithium Disilicate Inlays

Baciu, Sorana; Berece, Cristian; Florea, Adrian; Burde, Alexandru Victor; Negruțiu, Meda Lavinia; Szuhanek, Camelia; Sinescu, Cosmin; Duma, Virgil-Florin; Manole, Marius

doi:10.37358/rc.17.6.5665

Cited by 5 publications

(8 citation statements)

References 7 publications

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“…Removing the marginal ridges and achieving the width and depth of the inlay cavity are the main reasons for the low fracture strength [ 1 ]. In the posterior area of the dental arches, the replacement of classical restorations with inlays or onlays is a solution that improves all the parameters on which the success of dental treatment depends [ 2 ]. For the restoration of posterior teeth, there are a great variety of materials that correspond aesthetically to the new requirements of patients on the market, such as composite resins, ceramics, and zirconia.…”

Section: Introductionmentioning

confidence: 99%

Adhesive-Ceramic Interface Behavior in Dental Restorations. FEM Study and SEM Investigation

et al. 2021

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The purpose of this study is to identify the stress levels that act in inlay and onlay restorations, according to the direction and value of the external force applied. The study was conducted using the Finite Element Method (FEM) of three types of ceramics: pressed lithium disilicate and monolith, zirconia, and three different adhesive systems: self-adhesive, universal, and dual-cure cements. In addition to FEM, the inlay/onlay-dental structure interface analysis was performed by means of Scanning Electron Microscopy (SEM). The geometric models were reconstructed based on computer tomography images of an undamaged molar followed by geometrical procedures of inducing the inlay and onlay reconstructions. The two functional models were then simulated for different orientations of external force and different material properties, according to the considered adhesives and ceramics. The Scanning Electron Microscopy (SEM) was conducted on 30 extracted teeth, divided into three groups according to the adhesive cement type. Both FEM simulation and SEM investigations reveal very good mechanical behavior of the adhesive-dental structure and adhesive-ceramic interfaces for inlay and onlay reconstructions. All results lead to the conclusion that a physiological mastication force applied, regardless of direction, cannot produce a mechanical failure of either inlay or onlay reconstructions. The adhesive bond between the restorations and the dental structure can stabilize the ceramic restorations, resulting in a higher strength to the action of external forces.

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Section: Introductionmentioning

confidence: 99%

Adhesive-Ceramic Interface Behavior in Dental Restorations. FEM Study and SEM Investigation

et al. 2021

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“…This restorations, realized by indirect methods (made by dental technician in the laboratory), have optimized mechanical and biological parameters and, implicitly, superior clinical properties. Also, these indirect reconstruction methods allow a very accurate restoration of the teeth morphology -both occlusal and proximal detailsespecially of the contact area [1,2].The aesthetic requirements are extremely high nowadays, and the modern materials -composite resins and ceramic systemshave to respond to both physiognomic and mechanical demands, in order to be successfully used for inlay-type coronary reconstructions.The longevity of these high precision restorations depends also, to a large extent, on the quality of the dental-prosthetic joint, the depreciation of the fixing material leading to deficiencies at the level of the tooth-restoration interface [3,4]. The smaller the space at the tooth-restoration interface, the thinner the resin film, the lower the polymerization contraction and the more resistant the material, the better the marginal adaptation on the long term.In the literature there is a controversy about the material of choice for aesthetic inlays, each of the two materialscomposite resins and ceramic -having advantages and disadvantages as well.As for the marginal adaptation, this is influenced, on the one hand, by the space existing at the tooth-restoration interface, and on the other hand by the nature of the fixing material [5][6][7][8][9][10].In this study we aimed a comparative analysis of the behavior of the different luting materials in different conditions.…”

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confidence: 99%

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Study on the Behaviour of the Luting Cement for Aesthetic Inlays

Vițalariu¹,

Tatarciuc²,

Luca³

et al. 2019

Mat.Plast.

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The clinical success of any indirect prosthodontic restoration is strongly related, among other numerous factors, to the fixing procedure. The technological deficiencies into the inlay cementation lead to defects, either in depth or on surface, which often cause failures. The longevity of inlays depends, to a large extent, on the quality of the dental-prosthetic joint. This marginal adaptation is influenced by the thickness and the type of the luting cement. The aim of this study is a comparative analysis on the behavior of the luting cement for composite resin and ceramic inlays in two different solutions: ANFOR-type artificial saliva and a 20% citric acid solution. Fixing composites are the material of choice for works with high aesthetic potential, our study revealing that their depreciation and alteration is reduced, even in aggressive environments. Cementation seems to be the most critical step, and its long-term success relies on adherence to the clinical protocols.

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“…The adaptation of a restoration is determined by measuring its marginal and internal gaps, which are important factors for the long-term clinical success [5][6][7][8][9][10].…”

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Multivariate Assessment of Marginal Fit Concerning Two Types of Dental Inlays Obtained Through Two CAD-CAM Technology Scanning Methods - an in vitro Follow-up Study

Negucioiu¹,

Popa²,

Condor³

et al. 2019

Rev. Chim.

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Our aim in this follow-up in vitro study was to compare differences in marginal fit of inlays fabricated by CAD/CAM technique, using 2 different types of materials (one type of ceramic and one type of hybrid ceramic) and 2 different types of scanning: intraoral scanning (we use quotation marks because of the lack of a true intraoral environment) and model scanning, both performed on a Frasaco Typodont model. Marginal fit measurement was carried out with an electronic microscope at 1000x magnification. Our results proved to be better in the case of the ceramic we used, while model scanning proved to be more accurate than intraoral scanning. The best combination we obtained in terms of marginal fit was found when using ceramic and model scanning.

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A Comparative Three- and Bi-dimensional Research of the Marginal Fit of Pressed Lithium Disilicate Inlays

Cited by 5 publications

References 7 publications

Adhesive-Ceramic Interface Behavior in Dental Restorations. FEM Study and SEM Investigation

Adhesive-Ceramic Interface Behavior in Dental Restorations. FEM Study and SEM Investigation

Study on the Behaviour of the Luting Cement for Aesthetic Inlays

Multivariate Assessment of Marginal Fit Concerning Two Types of Dental Inlays Obtained Through Two CAD-CAM Technology Scanning Methods - an in vitro Follow-up Study

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