Stainability of acrylic resin materials used in CAD-CAM and conventional complete dentures

al-Qarni, Faisal D.; Goodacre, Charles J.; Kattadiyil, Mathew T.; Baba, Nadim Z.; Paravina, Rade D.

doi:10.1016/j.prosdent.2019.07.004

Cited by 55 publications

(55 citation statements)

References 29 publications

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“…Therefore, our null hypothesis can only be partially rejected, since the other tested groups were not inferior to the conventional heat‐polymerized PMMA groups. This finding is similar to the previously published results where the tested CAD/CAM subtractively manufactured resins were not inferior to the conventional resins and were below the perceptibility threshold 19,20 . The study by Alp et al.…”

Section: Discussionsupporting

confidence: 91%

“…There is in particular a lack of scientific evidence concerning the color stability of these resins. In the current literature, only three studies have assessed the color stability of CAD/CAM subtractively manufactured resins whilst comparing them to conventional heat‐polymerized PMMA resin 18–20 . These do not include evidence on resins used for additively manufactured CRDPs.…”

mentioning

confidence: 99%

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CAD/CAM Complete Denture Resins: An In Vitro Evaluation of Color Stability

Gruber

Kamnoedboon

Özcan

et al. 2020

Journal of Prosthodontics

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Purpose To evaluate the color stability of CAD/CAM complete denture resins. Materials and Methods A total of 176 resin specimens were manufactured from conventional heat‐polymerizing (pink: CONHCP: n = 16; tooth‐shade: CONHCT: n = 16), CAD/CAM subtractively manufactured (pink: WIMP: n = 16, AVMP: n = 16, MEMP: n = 16, POMP: n = 16; tooth‐shade: AVMT: n = 16, MEMT: n = 16, POMT: n = 16), and additively manufactured (pink: NDRPP: n = 16; tooth‐shade: NDRPT: n = 16) denture resins; four different aging processes (thermal cycling, distilled water, red‐wine, and coffee) were used. A spectrophotometer evaluated the color change (ΔE) using two modes of measurements (specular component included (ΔESCI) and specular component excluded (ΔESCE)) recorded at baseline (T0) and at day#30 (T30). ANOVA and post hoc tests were used for statistical analysis (alpha = 0.05). Results Additively manufactured resins (NDRPP and NDRPT) demonstrated significant ΔE in comparison to the other groups in all aging media (p < 0.001). WIMP demonstrated higher ΔESCI in comparison to the other subtractively manufactured groups in distilled water (p < 0.001). In red‐wine, AVMT revealed significantly more ΔESCE than POMT (p = 0.039). In coffee, the ΔESCE was higher for CONHCT than MEMT (p = 0.026) and POMT (p = 0.011). Similarly, in coffee the ΔESCE for AVMT was higher than POMT (p = 0.030). Conclusion Additively manufactured denture resins demonstrated the maximum color change compared to conventional heat‐polymerized and CAD/CAM subtractively manufactured denture resins. Furthermore, CAD/CAM subtractively manufactured denture resins were not inferior to conventional resins in terms of color stability.

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Section: Discussionsupporting

confidence: 91%

mentioning

confidence: 99%

CAD/CAM Complete Denture Resins: An In Vitro Evaluation of Color Stability

Gruber

Kamnoedboon

Özcan

et al. 2020

Journal of Prosthodontics

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“…Although numerous studies have been carried out to evaluate the effect of denture cleanser on the denture base materials, yet only a few studies have evaluated the newer denture bases such as CAD-CAM products. Some studies have reported the properties of CAD/CAM denture bases such as stainability 16) , bacteria adhesive evaluation 17) , mechanical property 18,19) , monomer released 20) and accuracy 21) . However, the effect of denture cleanser on the CAD/CAM denture base is still unconfirmed.…”

Section: Effect Of Toothbrush/dentifrice Abrasion On Weight Variationmentioning

confidence: 99%

Effect of toothbrush/dentifrice abrasion on weight variation, surface roughness, surface morphology and hardness of conventional and CAD/CAM denture base materials

Chang

Lee

Hsu³

et al. 2021

Dent. Mater. J.

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We evaluated the effect of toothbrush/dentifrice brushing on the weight variation and surface properties of different denture bases. Four denture base materials (conventional heat cure, high impact, CAD/CAM, and polyamide resins) were subjected to toothbrushing abrasion (50,000 strokes). The weight value, surface roughness, and topography of each group were determined before and after toothbrushing. The hardness was measured by the Vickers hardness test. Data were analyzed using ANOVA and Bonferroni tests. After toothbrushing, the weight of the polyamide resin had significantly increased; significant weight losses were observed for conventional heat cure and high impact resins, but none for the CAD/CAM resin. The surface roughness of each group increased significantly owing to the wear caused by toothbrushing. The weight variation and surface roughness were not affected by the hardness. Our results suggested that denture base materials deteriorate after brushing with toothpaste, in which the polyamide resin exhibited lower levels of abrasion.

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“…There is evidence of improved physical properties of the milled base material. For instance, the resin is more hydrophilic (wettable), 28–30 contains less residual monomer, 38,40 has a smoother surface, 27,44 provides better resistance to surface staining, 65 and exhibits a higher modulus of elasticity, 66 flexural strength, 27,69 and fracture toughness 66 . In addition to containing less residual monomer, the milled prepolymerized acrylic resin is denser than heat‐activated conventional denture base resins 38,39 …”

Section: Printed Resins: Wear Resistance and Fracture Resistancementioning

confidence: 99%

CAD/CAM Complete Denture Systems and Physical Properties: A Review of the Literature

Baba

Goodacre

et al. 2021

Journal of Prosthodontics

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113

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Purpose CAD/CAM complete dentures have increased in popularity and a wide variety of systems are currently available. These prostheses present many advantages for clinicians, technicians and patients. Subtractive manufacturing is used by most of the available systems while a few manufacturers use an additive manufacturing technique. This article describes the currently available systems and materials available for the fabrication of CAD/CAM complete dentures and reviews the literature relative to their physical properties. Methods A comprehensive review of the literature was completed to enumerate the currently available techniques to fabricate CAD/CAM complete dentures and discuss their physical properties. A search of English language peer‐reviewed literature was undertaken using MEDLINE and PubMed on research articles published between 2000 and 2019. A hand search of relevant dental journals was also completed. Results The literature indicates the physical properties of CAD/CAM milled poly(methylmethacrylate) or PMMA as it is commonly described is superior to conventionally processed PMMA for the fabrication of complete dentures. Conclusion The incorporation of CAD/CAM technology into complete denture design and fabrication streamlines the clinical and laboratory processes and provides improved physical properties that enhance denture quality.

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Stainability of acrylic resin materials used in CAD-CAM and conventional complete dentures

Cited by 55 publications

References 29 publications

CAD/CAM Complete Denture Resins: An In Vitro Evaluation of Color Stability

CAD/CAM Complete Denture Resins: An In Vitro Evaluation of Color Stability

Effect of toothbrush/dentifrice abrasion on weight variation, surface roughness, surface morphology and hardness of conventional and CAD/CAM denture base materials

CAD/CAM Complete Denture Systems and Physical Properties: A Review of the Literature

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