Fabricated CAD/CAM Post-Core Using Glass Fiber-Reinforced Resin Shows Innovative Potential in Restoring Pulpless Teeth

Suzaki, Naoko; Nambu, Eriko; Tanaka, Ryousuke; Imazato, Satoshi; Hayashi, Mikako

doi:10.3390/ma14206199

Cited by 13 publications

(8 citation statements)

References 15 publications

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“…These unique properties work together to maintain its durably high strength during extended intraoral use periods. The strength of dental polymeric materials has been reported to increase with the incorporation of glass fibers, as shown in previous studies [44][45][46]. Previous studies by Suzaki et al demonstrated the superior flexural strength of CAD/CAM FRP, particularly if the fiber directions were identified [44,47], which is supported by the results of the current study.…”

Section: Discussionsupporting

confidence: 90%

“…The strength of dental polymeric materials has been reported to increase with the incorporation of glass fibers, as shown in previous studies [44][45][46]. Previous studies by Suzaki et al demonstrated the superior flexural strength of CAD/CAM FRP, particularly if the fiber directions were identified [44,47], which is supported by the results of the current study. This is in accordance with the results of a recent study by Babaier et al that concluded the higher flexural strength of two similar FRP CAD/CAM materials (ranging between almost 400-500 MPa) compared to PEEK (around 200 MPa) [48]._NCH blocks (GR) are relatively new and marketed for their superior mechanical and esthetic properties, requiring no firing or lamination.…”

Section: Discussionsupporting

confidence: 90%

“…Their moduli were closer to dentin (approximately 30 GPa [55]) than VE and VB, which could make their bending behavior closer to the surrounding tooth structure, thus, a longer intraoral service. Suzaki et al showed no significant difference in the flexural modulus of a CAD/CAM FRP-like CT compared to other fiber-integrated composites, and that it was not affected by the direction of the fibers within the material [44]. Fiber integration was found mechanically beneficial by Bechir et al [43].…”

Section: Discussionmentioning

confidence: 99%

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The effect of thermal aging on flexural strength of CAD/CAM hybrid and polymeric materials

Yeslam,

Alharbi,

Albalawi

et al. 2023

Mater. Res. Express

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Intraoral thermal variations may adversely affect the flexural properties of novel biomaterials for intelligent CAD/CAM fabrication of fixed partial dentures (FPDs). This study aimed to evaluate the flexural strength, flexural modulus, and effect of thermal aging on CAD/CAM restorative materials. Five CAD/CAM materials were investigated: nano-ceramic-hybrid (GR), polymer-infiltrated-ceramic-network (VE), polyether-ether-ketone (PK), fiberglass-reinforced epoxy-resin (CT), and Feldspar Ceramic (VB). A total of 100 bar-shaped specimens were prepared (N=20). Each group was subdivided into thermocycled and non-thermocycled subgroups (n=10). All the specimens underwent a 3-point bending test. The mean flexural strengths and moduli were statistically analyzed using paired t-test, analysis of variance (ANOVA), and Bonferroni pair-wise comparison (p<0.05). Significant differences were observed in the flexural strength and modulus between the materials(p<0.001). Non-thermocycled CT had the highest flexural strength (924.88±120.1MPa), followed by GR (385.13±90.73MPa) PK (309.56±46.84MPa). The flexural strength of VB was the lowest (p<0.001), but similar to that of VE. Only VE significantly decreased in flexural strength after thermocycling (p=0.002). It can be concluded that nano-ceramic-hybrid materials had higher flexural strength than feldspar ceramic and other resin/polymeric CAD/CAM materials. The materials were more resistant to thermocycleling. Their flexural strength was comparable to polyether-ether-ketone for CAD/CAM frameworks, which is suitable for higher stress loads.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

The effect of thermal aging on flexural strength of CAD/CAM hybrid and polymeric materials

Yeslam,

Alharbi,

Albalawi

et al. 2023

Mater. Res. Express

View full text Add to dashboard Cite

show abstract

“…The fully digital method simplifies and shortens clinical and laboratory procedures. Post and core restorations with aesthetic materials have been studied in the literature [4,5]. As a result, the accuracy of the fitment to the walls of the root canal and the endurance to chewing forces by various stimulators have been established.…”

Section: Discussionmentioning

confidence: 99%

Fully Digital Direct Technique for CAD-CAM post and core restorations - a case report

Stoyanov¹,

Kirilova²

2023

MedInform

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Restoring the endodontically treated teeth is highly problematic without residual hard tooth tissues and destruction at the gingiva level -no ferrule effect. One possibility is to make post and core restoration. Aim. This article aims to establish the time needed to produce post and core restoration and temporary crown by the fully digital direct method. Materials and Method. A patient visited for restoration of a fractured tooth 34. We decided to make CAD-CAM post and core restoration and temporary crown by fully digital direct methods. Results. The total time estimated was three clinical visits or 180 minutes, with a standard time for one clinical visit of 60 minutes. Conclusion. Within this clinical case, we found that three clinical visits or 180 minutes were required for the fully digital production of computer-assisted posts and cores of chromium cobalt and a temporary 3D-printed crown. The accuracy of the recovery is acceptable. Further research is needed in this direction.

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“…Metal alloys, ceramics based on zirconium dioxide, lithium disilicate ceramics, fibre‐reinforced composites, PEEK, nano‐ceramic resin composites, hybrid ceramics etc. can be processed by milling 11–13 …”

Section: Introductionmentioning

confidence: 99%

Application of CAD/CAM technologies and materials for prosthetic restoration of severely damaged teeth—clinical cases

Tomova,

Zhekov,

Alexandrov

et al. 2023

Australian Dental Journal

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In cases of severely damaged teeth with limited coronal tooth structure and remaining hard dental tissues subgingivally, a custom‐made post‐and‐core restoration is required. Teeth with non‐circular canal space also require this type of restoration because the build‐up with pre‐fabricated posts could lead to thick cement layer. The development of CAD/CAM technologies widens the range of the materials that can be used for prosthetic restorations. Along with base dental alloys, newly developed materials may be applied. The aim of the article is to present four clinical cases of severely damaged teeth which utilize different materials and different production techniques for custom post‐and‐core fabrication. In the first clinical case, a metal post‐and‐core restoration was fabricated by direct metal laser sintering. In the second clinical case, digital technologies were used to produce a 3D‐printed resin prototype for further investing and casting from base metal dental alloy. In the third clinical case, fibre‐reinforced composite was used for fabrication of the custom post‐and‐core by milling. In the fourth clinical case, the restoration is produced by milling of lithium disilicate ceramics IPS emax CAD (Ivoclar Vivadent, Lichtenstein). The bond between the fibre‐reinforced composite post‐and‐core and the hard dental tissues offered possibility to compensate—to some extent—the shape of the preparation which was not optimal. CAD/CAM technologies applied in these clinical cases provided combination of high accuracy of fitting with good stability and individual shape of the restorations. © 2023 Australian Dental Association.

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Fabricated CAD/CAM Post-Core Using Glass Fiber-Reinforced Resin Shows Innovative Potential in Restoring Pulpless Teeth

Cited by 13 publications

References 15 publications

The effect of thermal aging on flexural strength of CAD/CAM hybrid and polymeric materials

The effect of thermal aging on flexural strength of CAD/CAM hybrid and polymeric materials

Fully Digital Direct Technique for CAD-CAM post and core restorations - a case report

Application of CAD/CAM technologies and materials for prosthetic restoration of severely damaged teeth—clinical cases

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