Photoelastic analysis of mandibular full-arch implant-supported fixed dentures made with different bar materials and manufacturing techniques

Zaparolli, Danilo; Peixoto, Raniel Fernandes; Pupim, Denise; Macedo, Ana Paula; Toniollo, Marcelo Bighetti; Mattos, Maria da Glória Chiarello de

doi:10.1016/j.msec.2017.07.052

Cited by 33 publications

(33 citation statements)

References 26 publications

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“…Zaporolli et al, examined the stress distribution in fiber, titanium, Cr-Co infrastructures produced with CAD / CAM and Cr-Co produced with conventional casting technique and they reported that fiber reinforced resin infrastructure had better stress distribution than other metals and less stress transmission in the implant cervical region. 26 Th is contradicts the results of the presented study; Zaporolli applied 150 N force to be considerably lower than the force of 250 N applied in our study. It is stated in the literature too that this force value for the first molar tooth is lower than average [27][28][29] .…”

Section: Scusss Oncontrasting

confidence: 99%

Stress Analysis Of Fixed Dental Prostheses Produced With Different Materials According To The All-On-Four Concept

ÇALIŞKAN

Yöndem

2019

Journal of Biotechnology and Strategic Health Research

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Objective The most important factor affecting the long-term success of implant supported systems is biomechanics after prosthesis delivery. The aim of this study was to investigate the prosthetic restorations designed by using different substructure materials on the implants placed according to All-On-4 technique in atrophic mandible with different stress analysis methods and compare the methods each other. Materials and Methods For this purpose, a photo-elastic resin model, according to All-On-4 concept was prepared. After taking impression, fiber-reinforced resin, PEEK, zirconia and metal substructures were manufactured with Cad/Cam. Photo elastic stress analysis was performed. On the other hand 3D virtual models of the same substructures were formed with the .stl data of the CAD. Then finite element stres analysis was applied at the same circumstances. Results In the photoelastic and finite element stres analysis, rigid substructures such as metal and zirconia showed lower stres values than elastic materials such as PEEK and fiber. As a facility of the finite element analysis internal stresses of the substructures were evaluated. Lower stresses were observed in fiber and PEEK infrastructures with low elastic modulus. Conclusion İncreased modulus of elasticity of the infrastructure, reduced.stresses transmitted to the implants When the internal stresses of the materials were evaluated, lower stresses were seen in infrastructures such as fiber and PEEK with low elastic modulus .Photoelastic and finite element stress analyzes gave similar stress results to the implant and surrounding tissues. Therefore, the results supported each other.

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Section: Scusss Oncontrasting

confidence: 99%

Stress Analysis Of Fixed Dental Prostheses Produced With Different Materials According To The All-On-Four Concept

ÇALIŞKAN

Yöndem

2019

Journal of Biotechnology and Strategic Health Research

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“…The photographic registers were qualitatively analyzed by an evaluator, according to the number of high intensity fringes (green-pink transition) (12). Zaparolli et al (14) attributed values to transition fringes according to Table 2. The evaluator was shielded, not knowing which group each photographic register belonged to, avoiding bias in the results.…”

Section: Methodsmentioning

confidence: 99%

Stress distribution in fixed mandibular prostheses fabricated by CAD/CAM and conventional techniques: Photoelastic and strain gauge analyses

Medeiros

Pesqueira

et al. 2019

J Clin Exp Dent

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BackgroundThe aim of this study was to evaluate the distribution of stress in complete fixed mandibular prostheses with infrastructures (IE) fabricated with different materials and techniques, under compressive force.Material and MethodsA model of an edentulous mandible, which received five 4x11 mm external hexagon implants between the mental foramens, was fabricated. The groups were divided into: Group I - IE in nickel-chromium with an acrylic resin occlusal coating; Group II – IE in nickel-chromium with a ceramic occlusal coating; Group III – IE milled in zirconia with a ceramic coating. For the photoelastic methodology, 70 N axial loads were applied in three regions. Photographic images were taken and analyzed according to the number of high-intensity fringes. For the strain gauge methodology, the measurement of stresses was performed in two distinct regions. The same compression tests described earlier were then performed. The registered stress values were grouped in tables and submitted to two-factor variance analysis (ANOVA) and the Tukey test with 5% significance.ResultsThe results of the two methodologies demonstrated smaller stress values for Group I, when compared to the other groups.ConclusionsIt was possible to conclude that the complete fixed prostheses, with infrastructures cast in metal and acrylic occlusal coating, demonstrated better biomechanical results. Key words:Dental implants, mandibular prosthesis implantation, biomechanics.

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“…16 Similar to PEEK, 19,21 MCR materials also have a low elastic modulus, lower flexural strength, shockabsorbing behavior, and similar modulus of elasticity as bone. [13][14][15] Currently, different brands of PAEK and MCR materials are available in different compositions. PEEK polymers are found in unfilled (pure 100% PEEK) and filled forms (80% PEEK with 20% inorganic fillers: nanoceramic filler or titanium dioxide filler) and as a ceramic-reinforced form with a semicrystalline arrangement of molecular chains.…”

mentioning

confidence: 99%

Surface roughness of high-performance polymers used for fixed implant-supported prostheses

Batak

Çakmak

Johnston

et al. 2021

The Journal of Prosthetic Dentistry

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As a result of an increasing demand for fabricating metal-free restorations and parallel with the developments in computer-assisted design and computer-assisted manufacturing (CAD-CAM) technology and materials, CAD-CAM high-performance polymers (HPPs) have been introduced as alternative materials to titanium and zirconia. 1-8 HPPs have been increasingly used as a framework material for fixed and removable prostheses and for implant-supported prostheses. These materials have been reported to have favorable thermal and mechanical properties. 1,9-11 Polyaryletherketones (PAEKs) and modified composite resin (MCR) polymers are currently available HPP materials. 6,11-17 Polyetheretherketone (PEEK) and polyetherketoneketone (PEKK) are 2 main groups of the PAEK polymer family that contain an aromatic backbone molecular chain, interconnected by functional ketone and ether groups. 1,2,10-12,16,18-20 PEEK and PEKK are high-temperature semicrystalline thermoplastic polymers with linear chain structures. 10-12,16,18-20 PEEK has been reported to be easily machinable, have low solubility and water absorption, and have high polishability and stability in terms of hardness, rigidity,

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Photoelastic analysis of mandibular full-arch implant-supported fixed dentures made with different bar materials and manufacturing techniques

Cited by 33 publications

References 26 publications

Stress Analysis Of Fixed Dental Prostheses Produced With Different Materials According To The All-On-Four Concept

Stress Analysis Of Fixed Dental Prostheses Produced With Different Materials According To The All-On-Four Concept

Stress distribution in fixed mandibular prostheses fabricated by CAD/CAM and conventional techniques: Photoelastic and strain gauge analyses

Surface roughness of high-performance polymers used for fixed implant-supported prostheses

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