Variation of the mechanical properties of pulsed laser deposited PMMA films during annealing

Süske, Erik; Scharf, Thorsten; Schaaf, Peter; Panchenko, E. Yu.; Nelke, Dorit; Buback, Michael; Kijewski, H.; Krebs, Hans‐Ulrich

doi:10.1007/s00339-004-2754-3

Cited by 30 publications

(21 citation statements)

References 7 publications

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“…It has also been reported that the bonding between resilient lining materials and denture base materials is affected by the nature of the denture base material 41-43. Three base polymers with different chemical compositions were used in the present study.…”

Section: Discussionmentioning

confidence: 99%

Peel strength of denture liner to PMMA and polyamide: laser versus air-abrasion

Korkmaz

Bağış²,

Özcan

et al. 2013

J Adv Prosthodont

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PURPOSEThis study investigated the effect of laser parameters and air-abrasion on the peel strength of silicon-based soft denture liner to different denture resins.MATERIALS AND METHODSSpecimens (N=180) were prepared out of three different denture base resins (Rodex, cross-linked denture base acrylic resin; Paladent, heat-cured acrylic resin; Deflex, Polyamide resin) (75 mm × 25 mm × 3 mm). A silicon-based soft denture liner (Molloplast B) was applied to the denture resins after the following conditioning methods: a) Air-abrasion (50 µm), b) Er,Cr:YSGG laser (Waterlase MD Turbo, Biolase Technology) at 2 W-20 Hz, c) Er,Cr:YSGG laser at 2 W-30 Hz, d) Er,Cr:YSGG laser at 3 W-20 Hz, e) Er,Cr:YSGG laser at 3 W-30 Hz. Non-conditioned group acted as the control group. Peel test was performed in a universal testing machine. Failure modes were evaluated visually. Data were analyzed using two-way ANOVA and Tukey's test (α=.05).RESULTSDenture liner tested showed increased peel strength after laser treatment with different parameters (3.9±0.4 - 5.58±0.6 MPa) compared to the control (3.64±0.5 - 4.58±0.5 MPa) and air-abraded groups (3.1±0.6 - 4.46±0.3 MPa), but the results were not statistically significant except for Paladent, with the pretreatment of Er,Cr:YSGG laser at 3 W-20 Hz. Polyamide resin after air-abrasion showed significantly lower peel strength than those of other groups (3.1±0.6 MPa).CONCLUSIONHeat-cured acrylic resin, PMMA, may benefit from Er,Cr:YSGG laser treatment at 3 W-20 Hz irradiation. Air-abrasion of polyamide resins should be avoided not to impair their peel bond strengths to silicon-based soft denture liners.

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Section: Discussionmentioning

confidence: 99%

Peel strength of denture liner to PMMA and polyamide: laser versus air-abrasion

Korkmaz

Bağış²,

Özcan

et al. 2013

J Adv Prosthodont

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“…We investigate films that are produced by pulsed laser deposition (PLD). The films mainly (about 80% of the deposited material) consist of a polymer with reduced molecular mass (corresponding to a number of monomers of about 60) and exhibit an increased mechanical hardness due to a small highly cross-linked fraction [14,15]. They are in a highly disordered state and contain most likely a large amount of free volume quenched in during the deposition process.…”

Section: Introductionmentioning

confidence: 99%

Comparison of mechanical and dielectric relaxation processes in laser-deposited poly(methyl methacrylate) films

et al. 2006

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“…For that purpose, PMMA film can be strengthened by a long and high temperature annealing. This process then starts the cross-linking of the polymer [5] and therefore the increase in the glass transition temperature can be observed. Fig.…”

Section: Resultsmentioning

confidence: 97%