Fatigue behavior and crack initiation of CAD/CAM resin composite molar crowns

Kani, Renshirou; Kawakami, Kazuma; Tsuji, Masaaki; Inoue, Sayuri; Lee, Chunwoo; Kiba, Wakako; Imazato, Satoshi

doi:10.1016/j.dental.2018.07.002

Cited by 39 publications

(23 citation statements)

References 26 publications

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“…Resin composites are widely used to manufacture restorations because they present stability, excellent mechanical properties and a favorable aesthetic [51]. An in vitro study analyzed the stress relaxation behavior of acrylic resins and resin composites.…”

Section: Discussionmentioning

confidence: 99%

“…FEA is widely used in dental studies to analyze the biomechanical behavior of materials; however, there are also limitations to be considered that must be complemented with data from previous studies prior to a clinical decision [28,31,45,50,51]. The absence of pH simulation [51,57,58], biofilm, temperature and the use of isotropic materials are examples of limitations to be considered when evaluating the results. Biomimetic polymeric materials can also be applied in further studies considering the material mechanical properties [56,57].…”

Section: Discussionmentioning

confidence: 99%

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Influence of Polymeric Restorative Materials on the Stress Distribution in Posterior Fixed Partial Dentures: 3D Finite Element Analysis

et al. 2021

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Background: This study evaluated the effect of interim restorative materials (acrylic resin (AR), resin composite (RC) or polyetheretherketone (PEEK) for dental computer-aided design/computer-aided manufacturing (CAD/CAM)) on the stress distribution of a posterior three-unit fixed partial denture. Methods: The abutment teeth (first molar and first premolar) were modeled using the BioCAD protocol containing 1.5 mm of axial reduction and converging axial walls. A static structural analysis was performed in the computer-aided engineering software, and the Maximum Principal Stress criterion was used to analyze the prosthesis and the cement layers of both abutment teeth. The materials were considered isotropic, linearly elastic, homogeneous and with bonded contacts. An axial load (600 N) was applied to the occlusal surface of the second premolar. Results: Regardless of the restorative material, the region of the prosthetic connectors showed the highest tensile stress magnitude. The highest stress peak was observed with the use of RC (129 MPa) compared to PEEK and AR. For the cement layers, RC showed the lowest values in the occlusal region (7 MPa) and the highest values for the cervical margin (14 MPa) compared to PEEK (21 and 12 MPa) and AR (21 and 13 MPa). Conclusions: Different interim restorative materials for posterior fixed partial dentures present different biomechanical behavior. The use of resin composite can attenuate the stress magnitude on the cement layer, and the use of acrylic resin can attenuate the stress magnitude on the connector region.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Influence of Polymeric Restorative Materials on the Stress Distribution in Posterior Fixed Partial Dentures: 3D Finite Element Analysis

et al. 2021

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“…Previous studies on CAD/CAM frameworks evaluated micro-hardness [17], flexural characteristics [18], fatigue behavior [19], bond strength [20], and chipping resistance [21]. To our knowledge, there are no studies that evaluated the micro-hardness of CAD/CAM materials after exposure to acidic drink.…”

Section: Introductionmentioning

confidence: 99%

Vickers Micro-Hardness of New Restorative CAD/CAM Dental Materials: Evaluation and Comparison after Exposure to Acidic Drink

et al. 2019

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CAD/CAM (computer-aided design/computer-aided manufacturing) for indirect restorative materials has been recently introduced in dentistry. The purpose of this study was to evaluate the change of the surface micro-hardness of different restorative CAD/CAM materials after exposure to a carbonated acidic drink (Coca-Cola, Coca-Cola Company, Milan, Italy). One hundred and eighty specimens of identical size (2 mm thickness) were obtained by sectioning each tested CAD/CAM block of four materials: a hybrid ceramic (CERASMART™, GC Corporation, Tokyo, Japan), a resin nano ceramic (Lava™ Ultimate, 3M, Monrovia, CA, USA), a nanohybrid composite (Grandio blocs, VOCO GmbH, Cuxhaven, Germany), and a zirconia-reinforced lithium silicate glass ceramic (VITA SUPRINITY® PC; VITA Zahnfabrik, Bad Sackingen, Germany). Forty-five specimens of each material were tested. Micro-hardness was measured at baseline, after 7 days and after 28 days. The data were analyzed. The micro-hardness of each material varied significantly after immersion in Coca-Cola. The nanohybrid composite had a high initial micro-hardness and the greatest percentage loss after acid exposure. The hybrid ceramic and the resin nano ceramic had similar percentage losses of micro-hardness values even if the second material had higher initial values. The zirconia-reinforced lithium silicate glass ceramic had the highest baseline values and the lowest percentage loss of micro-hardness. The different CAD/CAM materials presented different micro-hardness values before and after acid exposure.

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“…20 Uzupełnienia protetyczne zębów bocznych wykonane z różnych materiałów w technologii CAD/CAM wykazały dobre wyniki kliniczne. [21][22][23] Ścieralność uzupełnień pełnoceramicznych i kompozytowych względem szkliwa zębów przeciwstawnych, jest nadal przedmiotem badań klinicznych. Materiały kompozytowe mają podobne właściwości ścierne w stosunku do szkliwa zęba przeciwnego jak naturalne szkliwo.…”

Section: Cerasmartunclassified

CAD/ CAM hybrid ceramics - literature review.

Stępień¹,

Dejak²

2020

Prosthodontics

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Fatigue behavior and crack initiation of CAD/CAM resin composite molar crowns

Cited by 39 publications

References 26 publications

Influence of Polymeric Restorative Materials on the Stress Distribution in Posterior Fixed Partial Dentures: 3D Finite Element Analysis

Influence of Polymeric Restorative Materials on the Stress Distribution in Posterior Fixed Partial Dentures: 3D Finite Element Analysis

Vickers Micro-Hardness of New Restorative CAD/CAM Dental Materials: Evaluation and Comparison after Exposure to Acidic Drink

CAD/ CAM hybrid ceramics - literature review.

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