An in vitro study on the secondary caries-prevention properties of three restorative materials

Lai, Guangyun; Zhu, Lixia; Li, Mingyu; Wang, Jun

doi:10.1016/j.prosdent.2013.06.011

Cited by 23 publications

(13 citation statements)

References 31 publications

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“…Concerns arise from the fact that removing and replacing such defective intracoronal restorations can lead to a significant extension of the original preparations, with an increased size, isthmus width and cusp height [8, 9]. Occlusal forces on an inlay produce stresses along the sides and base of the restoration, which may fracture the tooth [10].…”

Section: Introductionmentioning

confidence: 99%

Influence of the indirect restoration design on the fracture resistance: a finite element study

Mei

Chen

et al. 2016

BioMed Eng OnLine

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Objectives To establish a three-dimensional (3D) finite element (FE) model of a maxillary first premolar and to evaluate the stress generated on the tooth (dentine) and on the indirect composite resin restorations by occlusal forces.Methods An embedded intact maxillary first premolar tooth was sliced serially and scanned digitally parallel to the occlusal surface. The 64 images were assembled in a 3D FE mesh and exported to generate a 3D solid tooth model. Simulated, adhesively cemented indirect mesial-occlusal-distal (MOD) inlays of 2 mm (I1), 3 mm (I2) and 4 mm (I3) in width, and MOD onlays with occlusal cusp coverage of 2 mm (O1) and 3 mm (O2) in depth were created. The peak von Mises stress values in the five tooth models resulting from static vertical and oblique occlusal forces (300 N) were evaluated using Patran FE software.ResultsThe peak stress values generated by vertical occlusal force generated in dentine of I1, I2, I3, O1 and O2 restoration were 67, 32, 29, 38 and 27 MPa, respectively, and those generated by oblique occlusal force were 52, 114, 168, 54 and 55 MPa, respectively. The peak von Mises stress values in I1, I2, I3, O1 and O2 restoration subjected to oblique occlusal loading were 79, 120, 1740, 1400 and 1170 MPa, respectively.ConclusionA 3D FE model of a maxillary first premolar was established. Simulated cemented composite resin onlay markedly reduces occlusal stress in the underlying dentine of large MOD preparation. Oblique occlusal force imparts substantially higher stress to large composite resin inlay than to the adjacent dentine.

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Section: Introductionmentioning

confidence: 99%

Influence of the indirect restoration design on the fracture resistance: a finite element study

Mei

Chen

et al. 2016

BioMed Eng OnLine

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“…3 The latter, often called wall lesions, have been implied in the reported higher susceptibility of composite restorations to secondary caries, as compared to amalgam restorations. 4 Composite resin is a popular filling material bonded to the tooth structure using bonding agents, creating a compositetooth interface. This interface is reported as the most vulnerable structure of the adhesive restorations.…”

Section: Introductionmentioning

confidence: 99%

Wall-lesion development in gaps: The role of the adhesive bonding material

Montagner

Kuper²,

Opdam³

et al. 2015

Journal of Dentistry

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“…Laboratory studies using artificial marginal gaps in extracted tooth specimens exposed to cariogenic bacteria have demonstrated the ability to induce artificial carious wall lesions at increased frequency when marginal gap width dimensions increase substantially beyond 50 μm . Although fluoride‐releasing materials, such as glass ionomers, offer some additional protection via sustained fluoride release, their actual clinical benefit in preventing secondary caries remains equivocal . The limited protective properties of current restoratives underscore the significant challenge that secondary caries still presents as a failure mode for restorative materials.…”

Section: Introductionmentioning

confidence: 99%

“…5,9,10 Although fluoride-releasing materials, such as glass ionomers, offer some additional protection via sustained fluoride release, their actual clinical benefit in preventing secondary caries remains equivocal. [11][12][13][14][15] The limited protective properties of current restoratives underscore the significant challenge that secondary caries still presents as a failure mode for restorative materials. Notwithstanding the long-standing observation that dental amalgam occludes marginal defects by either deposition of metallic corrosion products and/or material creep mechanisms; 16,17 no other currently available direct or indirect dental material has demonstrated an analogous ability to seal or reseal marginal defects.…”

Section: Introductionmentioning

confidence: 99%