Comparison of treatment outcomes in digital and conventional complete removable dental prosthesis fabrications in a predoctoral setting

Kattadiyil, Mathew T.; Jekki, Rami; Goodacre, Charles J.; Baba, Nadim Z.

doi:10.1016/j.prosdent.2015.08.001

Cited by 215 publications

(262 citation statements)

References 13 publications

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“…This technology-driven manufacturing process owes its exponential growth to a few important factors such as, but not entirely restricted to, the changing attitudes and/or trends of the clinicians as well as the dental technicians, the potential reduction in clinical chairside time and dental laboratory costs, as well as the incorporation of pre-polymerized materials. Clinical success, in terms of patient satisfaction and patient preference for the CAD/CAM manufactured CRDPs, has been reported in literature [4][5][6] . In terms of the trueness of the CAD/CAM fabricated CRDPs, when compared to conventional CRDPs, was found to be non-inferior to a conventional PMMA and within the clinically acceptable range [7][8][9][10] .…”

Section: Introductionmentioning

confidence: 99%

CAD/CAM milled complete removable dental prostheses: An <i>in vitro</i> evaluation of biocompatibility, mechanical properties, and surface roughness

Srinivasan

Gjengedal

Cattani-Lorente

et al. 2018

Dental Materials Journal

109

124

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This study compared the biocompatibility, mechanical properties, and surface roughness of a pre-polymerized polymethyl methacrylate (PMMA) resin for CAD/CAM complete removable dental prostheses (CRDPs) and a traditional heat-polymerized PMMA resin. Two groups of resin substrates [Control (RC): conventional PMMA; Test (RA): CAD/CAM PMMA] were fabricated. Human primary osteoblasts and mouse embryonic-fibroblasts were cultured for biocompatibility assays. Mechanical properties and surface roughness were compared. ANOVA revealed no difference between the resin groups in the biocompatibility assays. RA demonstrated a higher elastic modulus (p=0.002), young's modulus (p=0.002), plastic energy (p=0.002), ultimate strength (p=0.0004), yield point (p=0.016), strain at yield point (p=0.037), and toughness (p<0.0001); while RC displayed a higher elastic energy (p<0.0001). Laser profilometry concluded a rougher surface profile (p<0.0001) for RA. This study concluded that the tested CAD/CAM resin was equally biocompatible and presented with improved mechanical properties than the traditional heat-polymerized PMMA resin used in the fabrication of CRDPs.

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Section: Introductionmentioning

confidence: 99%

CAD/CAM milled complete removable dental prostheses: An <i>in vitro</i> evaluation of biocompatibility, mechanical properties, and surface roughness

Srinivasan

Gjengedal

Cattani-Lorente

et al. 2018

Dental Materials Journal

109

124

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“…The shrinkage causes distortions of the denture base and therefore has a negative impact on fit and retention of removable complete dentures [8][9][10]. In CAD/CAM fabrication, on the other hand, the manufacturing process is subtractive: The denture bases are milled from fully polymerised acrylic resin pucks [11] and are therefore not subject to shrinkage or distortion phenomena anymore [12,13].…”

Section: Introductionmentioning

confidence: 99%

CAD/CAM produces dentures with improved fit

et al. 2018

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Objectives Resin polymerisation shrinkage reduces the congruence of the denture base with denture-bearing tissues and thereby decreases the retention of conventionally fabricated dentures. CAD/CAM denture manufacturing is a subtractive process, and polymerisation shrinkage is not an issue anymore. Therefore, CAD/CAM dentures are assumed to show a higher denture base congruence than conventionally fabricated dentures. It has been the aim of this study to test this hypothesis. Materials and methods CAD/CAM dentures provided by four different manufacturers (AvaDent, Merz Dental, Whole You, Wieland/Ivoclar) were generated from ten different master casts. Ten conventional dentures (pack and press, long-term heat polymerisation) made from the same master casts served as control group. The master casts and all denture bases were scanned and matched digitally. The absolute incongruences were measured using a 2-mm mesh. Results Conventionally fabricated dentures showed a mean deviation of 0.105 mm, SD = 0.019 from the master cast. All CAD/ CAM dentures showed lower mean incongruences. From all CAD/CAM dentures, AvaDent Digital Dentures showed the highest congruence with the master cast surface with a mean deviation of 0.058 mm, SD = 0.005. Wieland Digital Dentures showed a mean deviation of 0.068 mm, SD = 0.005, Whole You Nexteeth prostheses showed a mean deviation of 0.074 mm, SD = 0.011 and Baltic Denture System prostheses showed a mean deviation of 0.086 mm, SD = 0.012. Conclusions CAD/CAM produces dentures with better fit than conventional dentures. Clinical Relevance The present study explains the clinically observed enhanced retention and lower traumatic ulcer-frequency in CAD/CAM dentures.

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“…One great advantage of the new fabrication protocols is the reduced number of patient visits for complete denture fabrication [1–3]. First evidences indicate that digitally fabricated dentures have a more favourable clinical outcome compared to conventionally fabricated dentures [3].…”

Section: Introductionmentioning

confidence: 99%

“…First evidences indicate that digitally fabricated dentures have a more favourable clinical outcome compared to conventionally fabricated dentures [3]. Besides the procedural advantages, digitally fabricated dentures are also hypothesised to have enhanced material-specific properties [1–5], because the denture base is milled from poly(methyl methacrylate) (PMMA) pucks that have been polymerised under high temperature and pressure [4].…”

Section: Introductionmentioning

confidence: 99%

Do CAD/CAM dentures really release less monomer than conventional dentures?

et al. 2016

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ObjectivesComputer-aided design (CAD)/computer-aided manufacturing (CAM) dentures are assumed to have more favourable material properties than conventionally fabricated dentures, among them a lower methacrylate monomer release. The aim of this study was to test this hypothesis.Materials and methodsCAD/CAM dentures were generated from ten different master casts by using four different CAD/CAM systems. Conventional, heat-polymerised dentures served as control group. Denture weight and volume were measured; the density was calculated, and the denture surface area was assessed digitally. The monomer release after 7 days of water storage was measured by high-performance liquid chromatography.ResultsWhole You Nexteeth and Wieland Digital Dentures had significantly lower mean volume and weight than conventional dentures. Baltic Denture System and Whole You Nexteeth had a significantly increased density. Baltic Denture System had a significantly smaller surface area. None of the CAD/CAM dentures released significantly less monomer than the control group.ConclusionsAll tested dentures released very low amounts of methacrylate monomer, but not significantly less than conventional dentures. A statistically significant difference might nevertheless exist in comparison to other, less recommendable denture base materials, such as the frequently used autopolymerising resins.Clinical relevanceCAD/CAM denture fabrication has numerous advantages. It enables the fabrication of dentures with lower resin volume and lower denture weight. Both could increase the patient comfort. Dentures with higher density might exhibit more favourable mechanical properties. The hypothesis that CAD/CAM dentures release less monomer than conventional dentures could, however, not be verified.

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Comparison of treatment outcomes in digital and conventional complete removable dental prosthesis fabrications in a predoctoral setting

Cited by 215 publications

References 13 publications

CAD/CAM milled complete removable dental prostheses: An <i>in vitro</i> evaluation of biocompatibility, mechanical properties, and surface roughness

CAD/CAM milled complete removable dental prostheses: An <i>in vitro</i> evaluation of biocompatibility, mechanical properties, and surface roughness

CAD/CAM produces dentures with improved fit

Do CAD/CAM dentures really release less monomer than conventional dentures?

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