Influence of surrounding wall thickness on the fatigue resistance of molars restored with ceramic inlay

Shibata, S; Gondo, Renata; Araújo, Edson; Roesler, Carlos Rodrigo de Mello

doi:10.1590/1807-3107bor-2014.vol28.0011

Cited by 11 publications

(9 citation statements)

References 19 publications

(28 reference statements)

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“…Therefore, biomechanical tests that simulate the oral environment by reproduction of the chewing forces, temperature and humidity of the oral cavity are important in evaluating the performance of new materials (8). Fatigue testing meets these requirements and is used for testing dental materials like composite resins and ceramics (9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21). The fatigue test simulates the clinical situation better than static compression test (11).…”

Section: Discussionmentioning

confidence: 99%

“…Literature reports have shown that materials that exhibit high initial resistance do not always have high resistance to fatigue (5,6). Therefore, it seems appropriate that the strength of teeth restored with dental materials should be measured using a dynamic mechanical test rather than static tests (6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24).…”

Section: Introductionmentioning

confidence: 99%

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In Vitro Fatigue Resistance of Teeth Restored With Bulk Fill versus Conventional Composite Resin

et al. 2016

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The aim of this study was to compare the fatigue resistance of restored teeth with bulk fill composite resin, conventional composite resin with incremental insertion and unprepared sound teeth. Twenty-eight extracted maxillary premolars were selected and divided into 4 groups based on composite resin and insertion technique: control (C), conventional composite resin with incremental insertion (I) and bulk fill composite resin with three (BF3) or single increment (BF1). The restored specimens were submitted to fatigue resistance test with a 5 Hz frequency. An initial application of 5,000 sinusoidal load cycles with a minimum force of 50 N and a maximum force of 200 N was used. Next, were applied stages of 30,000 load cycles with the maximum force increasing gradually: 400, 600, 800, 1000, 1200 and 1400 N. The test was concluded when 185,000 load cycles were achieved or the specimen failed. The fatigue resistance data were recorded for comparison, using the Kaplan-Meier survival curve and analyzed by log-rank test at 0.05 significance. Fractures were classified based on the position of the failure - above or below the cementoenamel junction (CEJ). Statistical analysis of the Kaplan-Meier survival curve and log-rank test showed a significant difference between groups (p=0.001). The fracture analysis demonstrated that only 28.58% of failures were below the CEJ in group C, while for groups I, BF1 and BF3 they were 42.85%, 85.71% and 85.71%, respectively. Teeth restored with composite bulk fill in both techniques present similar fatigue resistance values compared with those restored with a conventional incremental insertion of composite, while the fatigue strength values of unprepared sound teeth were higher. Furthermore, unprepared sound teeth showed a lower percentage of fractures below the CEJ.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

In Vitro Fatigue Resistance of Teeth Restored With Bulk Fill versus Conventional Composite Resin

et al. 2016

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“…All preparations were performed with rounded-ended conical diamond burs (#3131, KG Sorensen, Cotia, SP, Brazil), replaced each five preparations. The preparations were standardized using a device [16] to attach the high-speed handpiece (KaVo 605C KaVo Joinville, SC, Brazil) to the paralelometer, stabilized in the same position. The long axis of the diamond bur was constant and perpendicular to the occlusal surface of the tooth through the use of this device.…”

Section: Methodsmentioning

confidence: 99%

Influence of Preparation Reconstruction on the Compressive Strength of CAD/CAM Ceramic Inlays

Sinhori

Vieira

2019

International Journal of Biomaterials

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The aim of this study was to evaluate whether the compressive strength of lithium dissilicate ceramic inlays is influenced by the substrate (dentin or composite resin build-up) and to compare it to nonrestored teeth. Thirty freshly extracted human maxillary third molars were selected and randomly ascribed to three groups (n=10). Standardized Class II MOD preparations were made (bucco-palatal width = 2/3 of the intercuspal width and 2/3 of the width at the tooth equator for the proximal boxes), varying the extension of the preparations (Group 2: preparation limited to tooth structure; Group 3: pulpal floor of the preparation rebuilt with composite resin, IPS Empress Direct, restored with lithium dissilicate CAD/CAM ceramic inlays (e.max CAD) and cemented with a resin cement (Variolink II)). All groups were subjected to compressive strength test (1mm/min crosshead speed). The results showed that the fracture strength of G1 (control group) was significantly higher than G2 and G3, while within these groups there were no statistically significant differences. Both groups restored with lithium dissilicate restorations did not reach the fracture strength of the sound teeth but were statistically equivalent and sufficient to withstand physiologic masticatory forces.

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“…If there was any displacement on tooth or restoration, the equipment was programmed to stop.The fracture mode was classified according to the following criteria: Mode I, small fractures in tooth structure or restoration, Mode II, fracture of one or more cusps, with a fracture above the cement-enamel junction, Mode III, longitudinal fracture compromising tooth integrity or beyond the cement-enamel junction. Mode I and II were considered noncatastrophic failures, and restorable, while Mode III was considered catastrophic and unrestorable failures(SHIBATA et al, 2014) .…”

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confidence: 99%

Fatigue Resistance and Crack Propensity of Large Mod Bulk Fill Composite Resin: In Vitro Study

Moecke¹,

Monteiro²,

Santos³

et al. 2020

Tecnologias Aplicadas À Prática E Ao Ensino Da Odontologia

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Todo o conteúdo deste livro está licenciado sob uma Licença de Atribuição Creative Commons. Atribuição 4.0 Internacional (CC BY 4.0). O conteúdo dos artigos e seus dados em sua forma, correção e confiabilidade são de responsabilidade exclusiva dos autores. Permitido o download da obra e o compartilhamento desde que sejam atribuídos créditos aos autores, mas sem a possibilidade de alterá-la de nenhuma forma ou utilizá-la para fins comerciais.

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Influence of surrounding wall thickness on the fatigue resistance of molars restored with ceramic inlay

Cited by 11 publications

References 19 publications

In Vitro Fatigue Resistance of Teeth Restored With Bulk Fill versus Conventional Composite Resin

In Vitro Fatigue Resistance of Teeth Restored With Bulk Fill versus Conventional Composite Resin

Influence of Preparation Reconstruction on the Compressive Strength of CAD/CAM Ceramic Inlays

Fatigue Resistance and Crack Propensity of Large Mod Bulk Fill Composite Resin: In Vitro Study

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