Comparison of full and partial coverage crowns with CAD/CAM leucite reinforced ceramic blocks on fracture resistance and fractographic analysis

Jurado, Carlos A.; Mourad, Firas; Trevino, Daniel Alberto Cortes; Gouveia, Diogo; Hyer, Jared; Elgreatly, Amira; Mahrous, Ahmed M; Garcı́a-Godoy, Franklin; Tsujimoto, Akimasa

doi:10.4012/dmj.2021-253

Cited by 10 publications

(7 citation statements)

References 22 publications

(24 reference statements)

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“…This could be explained by the fact that full coverage retainers distribute stresses across a larger tooth crown area, transferring less strain to the abutment. [47][48][49] Concerning unilateral loading, significantly higher strain values were recorded on the loaded side when compared with the unloaded side for the three models of the study. This was consistent with other stress-strain analysis studies, in which stresses tend to be attenuated on the contralateral side of the load application, resulting in significant differences between both sides.…”

Section: Discussionmentioning

confidence: 99%

Strains Induced by Zirconia and Metal Resin Bonded Attachments Versus Extracoronal Attachment With Full Veneer Retainer in Maxillary Distal Extension Removable Partial Dentures

Aswad

Youssef

2022

Egyptian Dental Journal

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Aim of the study: The aim of this study was to assess the strains transferred by zirconia and metal resin-bonded attachments (RBAs) to the maxillary distal extension removable partial denture (RPD) supporting structures and compare them with the strains generated by the extracoronal attachment with full veneer retainers. Materials and Methods: Three identical partially edentulous models that were created with a 3D printing technology. The virtual models for the retainers and the three attachments were designed using digital software. Model (1): Zirconia resin-bonded attachment (ZRBA). Model (2): Metal resin-bonded attachment (MRBA). Model (3): Extracoronal attachment with full veneer metal ceramic retainer (ECFV). Using 3D printing technology, the wax patterns for the three types of attachments were printed, and the retainers were constructed and cemented on their models. This was followed by the fabrication of attachment-retained removable partial dentures on the three printed models. Each RPD was subjected to a compressive static load of 100N using a universal testing machine. Then the strain values were recorded. Results: On bilateral loading, there were significant differences in the recorded strains at the three strain gauge locations between RBAs and ECFV. At the SG-3 location, there was no significant difference between the strains generated by ZRBA and MRBA. During unilateral loading, the results revealed statistically significant differences between the three attachments at the loading and non-loading sides. Conclusion: With the limitations of this study, it can be concluded that, in distal extension maxillary RPD, there is no significant difference between the strains generated by zirconia and metal resin bonded attachments. While the extracoronal attachment with full veneer retainers applied less strains on RPD supporting structures than resin bonded attachments.

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Section: Discussionmentioning

confidence: 99%

Strains Induced by Zirconia and Metal Resin Bonded Attachments Versus Extracoronal Attachment With Full Veneer Retainer in Maxillary Distal Extension Removable Partial Dentures

Aswad

Youssef

2022

Egyptian Dental Journal

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“…Generally, dental SFRCs include short or nano fibers and inorganic filler particles as reinforcing components in a resin matrix 11) . Biomechanics assesses the mechanical responses of biological structures to forces, such as stress and deformation 12) . The biomechanics of a tooth-restoration complex are affected by a number of factors, such as forces arising in the dentition, tooth structure and morphology, and the action of elements supporting the teeth, in addition to differences between the physicomechanical properties of tooth components and of the restorative materials, and the interactions arising at the interface.…”

Section: Short Fiber Reinforcement For Resin-based Compositementioning

confidence: 99%

Short fiber-reinforced resin-based composites (SFRCs); Current status and future perspectives

2022

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One technique for placing of resin-based composite for large posterior cavities is the use of short fiber-reinforced resin-based composite (SFRC) to replace dentin in a biomimetic approach. As endurance under mastication cycles is a significant consideration in the clinical success of resin-based composite posterior restorations, the use of SFRC as a base material may prevent restorative fracture due to the fibers' effectiveness in stopping cracks. This review article specifies the characteristics of SFRC and describes the major underlying mechanisms of short fiber reinforcement for resin-based composite. Insights are further taken from laboratory studies used to define the short fiber-related properties of resin-based composite and the performance of currently available materials, focusing on aspects that are relevant to the reinforcement of resin-based composite. Finally, future standpoints on the development of SFRCs with nano fibers and different resin monomers, and their role in digital dentistry, are discussed.

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“…These results agreed with Alberto Jurado, et al (2022) (23) who concluded that the restorative design and material type had an effect on the fracture resistance and fracture pattern of CAD/CAM full and partial coverage crowns restorations. Also, Jurado C, et al (2022) (24) Found that CAD/CAM lithium disilicate full coverage crown in premolar has fracture resistance value greater than overlay restorations. The result shows that increasing the cusp coverage, the greater the fracture resistance of restoration.…”

Section: Table (1): Fracture Resistance Between the Three Groupsmentioning

confidence: 99%

Influence of Different Vonlay Preparation Designs on Fracture Resistance

Sayed

waz²,

mohamed³

2022

Egyptian Dental Journal

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Objectives: This research aimed to evaluate the influence of different vonlay preparation designs on fracture resistance in comparison with full coverage ceramic crown (as a control group) Methods: Thirty fresh extracted upper four teeth were collected from the orthodontic clinic in Minia and Nahda university. Teeth were divided according to the design of vonlay preparation into three groups. In Group (A); the control group the teeth were prepared to receive full coverage lithium-disilicate crowns (n=10), Group (B); teeth were prepared to receive bonded partial restoration (vonlay) involving functional cusp (n=10), and Group (C); teeth were prepared to receive bonded partial restoration (vonlay) without involving functional cusp (n=10). Then, by using a universal testing machine, samples were loaded along the long axis of the teeth until they fractured, and the maximum breaking load was recorded, as well as fracture patterns were noted. All samples were exposed to thermo-mechanical aging before testing.Results: preparation design of vonlay influences the fracture resistance of restoration.

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Comparison of full and partial coverage crowns with CAD/CAM leucite reinforced ceramic blocks on fracture resistance and fractographic analysis

Cited by 10 publications

References 22 publications

Strains Induced by Zirconia and Metal Resin Bonded Attachments Versus Extracoronal Attachment With Full Veneer Retainer in Maxillary Distal Extension Removable Partial Dentures

Strains Induced by Zirconia and Metal Resin Bonded Attachments Versus Extracoronal Attachment With Full Veneer Retainer in Maxillary Distal Extension Removable Partial Dentures

Short fiber-reinforced resin-based composites (SFRCs); Current status and future perspectives

Influence of Different Vonlay Preparation Designs on Fracture Resistance

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