Analysis of the misfit of dental implant-supported prostheses made with three manufacturing processes

Fernández, Marc; Delgado, Luis M.; Molmeneu, Meritxell; García, David; Rodríguez, Daniel

doi:10.1016/j.prosdent.2013.09.006

Cited by 46 publications

(38 citation statements)

References 23 publications

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“…Prostheses are individually designed using various techniques such as milling, casting, and sintering, and the fit is debated. Fernández and colleagues quantified the misfit of dental implant‐supported prostheses by comparing three manufacturing processes and found a correlation between surface roughness and microgap width . This microgap was associated with complications such as screw loosening or adverse biologic responses .…”

Section: Discussionmentioning

confidence: 99%

Bone Response and Soft Tissue Changes Around Implants With/Without Abutments Supporting Fixed Partial Dentures: Results From a 3‐Year, Prospective, Randomized, Controlled Study

Göthberg

André²,

Gröndahl³

et al. 2015

Clin Implant Dent Rel Res

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Section: Discussionmentioning

confidence: 99%

Bone Response and Soft Tissue Changes Around Implants With/Without Abutments Supporting Fixed Partial Dentures: Results From a 3‐Year, Prospective, Randomized, Controlled Study

Göthberg

André²,

Gröndahl³

et al. 2015

Clin Implant Dent Rel Res

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“…In relation to implant frameworks, milling consistently provides very accurately fitting frameworks with a vertical fit in the range of 1 to 27 μ m, and the influence of prosthesis span appears to be minimal [105, 106], which is opposite to the observation for cast metal frameworks [107]. Milled abutments have also been shown to have minimal roughness with a well-defined geometry edge and a vertical gap of 0.7 μ m. This is superior to abutments produced by selective laser melting (vertical gap = 11.3 μ m) or casting (vertical gap = 9.1 μ m) [108]. …”

Section: Computer-aided Production Streamsmentioning

confidence: 99%

“…Implant abutments produced by selective laser melting have been shown to exhibit greater surface roughness and microgaps compared to machined or cast abutments [108]. Further, the geometry of abutments produced by selective laser melting was blurred in comparison with the sharply defined connection of the milled components.…”

Section: Computer-aided Production Streamsmentioning

confidence: 99%

Trends in Computer-Aided Manufacturing in Prosthodontics: A Review of the Available Streams

Abduo

Lyons

Bennamoun

2014

International Journal of Dentistry

259

220

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In prosthodontics, conventional methods of fabrication of oral and facial prostheses have been considered the gold standard for many years. The development of computer-aided manufacturing and the medical application of this industrial technology have provided an alternative way of fabricating oral and facial prostheses. This narrative review aims to evaluate the different streams of computer-aided manufacturing in prosthodontics. To date, there are two streams: the subtractive and the additive approaches. The differences reside in the processing protocols, materials used, and their respective accuracy. In general, there is a tendency for the subtractive method to provide more homogeneous objects with acceptable accuracy that may be more suitable for the production of intraoral prostheses where high occlusal forces are anticipated. Additive manufacturing methods have the ability to produce large workpieces with significant surface variation and competitive accuracy. Such advantages make them ideal for the fabrication of facial prostheses.

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“…The impact of weaker material in thin section is further exacerbated by post‐processing milling of the fitting surfaces. This step was necessary, as the SLM external surfaces exhibit inherent coarseness and stepped roughness . This surface will affect the fit of framework and may damage the underlying implant unless it is refined by machining.…”

Section: Discussionmentioning

confidence: 99%

Influence of novel implant selective laser melting framework design on mechanical durability of acrylic veneer

Abduo

Curtis

Budhwar

et al. 2018

Clin Implant Dent Rel Res

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Background A novel implant framework design is proposed to improve the mechanical durability of acrylic veneer. Purposes Comparing the mechanical durability of acrylic veneer on implant frameworks fabricated from selective laser melting (SLM) with novel design against conventional computer numeric controlled (CNC) milled frameworks. Materials and Methods Implant titanium frameworks with distal cantilever were fabricated by SLM (n = 10) and CNC milling (n = 10). The CNC frameworks had multiple vertical pins, while the SLM frameworks had 3D metal networks of horizontal beams connected by vertical struts. All the frameworks were veneered with acrylic teeth and resin material and were subjected to a static load‐to‐failure test at the cantilever region. The load‐to‐failure readings and the pattern of prosthesis damage were recorded for each prosthesis. Results The CNC and SLM prostheses failed at statistically similar loads. The acrylic veneer around the CNC frameworks tend to initially crack around the distal implant followed by acrylic chipping. Six SLM prostheses failed at the framework connector on the mesial implant by separation of the screw seat. After reloading these prostheses, they failed by acrylic veneer chipping. The SLM prostheses had significantly less incidence of acrylic flexure and severity of acrylic veneer chipping than CNC prostheses. Conclusions The SLM framework with novel design is efficient in reinforcing acrylic veneering. However, the SLM frameworks appeared weak in thin sections, such as the screw seat.

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Analysis of the misfit of dental implant-supported prostheses made with three manufacturing processes

Cited by 46 publications

References 23 publications

Bone Response and Soft Tissue Changes Around Implants With/Without Abutments Supporting Fixed Partial Dentures: Results From a 3‐Year, Prospective, Randomized, Controlled Study

Bone Response and Soft Tissue Changes Around Implants With/Without Abutments Supporting Fixed Partial Dentures: Results From a 3‐Year, Prospective, Randomized, Controlled Study

Trends in Computer-Aided Manufacturing in Prosthodontics: A Review of the Available Streams

Influence of novel implant selective laser melting framework design on mechanical durability of acrylic veneer

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