The nature of the interface between polymethyl methacrylate denture base materials and soft lining materials

Amin, Wala M.; Fletcher, A. M.; Ritchie, G.M.

doi:10.1016/0300-5712(81)90007-5

Cited by 95 publications

(95 citation statements)

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“…Nevertheless, the results of investigations are controversial. [11][12][13][14][15] Gundogdu et al 14 and Akin et al 11 reported that roughening the acrylic resin with airborne particle abrasion with 50-µm alumina particles resulted in lower bond strength compared to control specimens. Similar findings were reported by Atsü and Keskın, 16 who found that airborne abrasion with 50-µm alumina and 30-µm silica-coated alumina particles did not improve the bond strength of resilient lining material to denture base resin.…”

Section: Discussionmentioning

confidence: 99%

“…To solve this perplexing problem, investigators have focused on methods to alter the denture base resin surface. These methods include airborne particle abrasion, [11][12][13][14][15] tribochemical coating, 16 chemical etching, 14 and laser treatment. 14,15,17,18 A study showed that roughening the acrylic surface results in almost twice the adhesive bond strength of resilient lining materials in comparison to smooth surfaces.…”

Section: Jcdpmentioning

confidence: 99%

“…However, there is conflicting information regarding the efficacy of airborne particle abrasion in enhancing bond strength of the soft lining material to acrylic resin denture base. [12][13][14][15] Technological developments during the last decade have resulted in increased use of lasers in dentistry. Recently, laser has been proposed as an alternative method for surface treatment to obtain higher bond strength between two materials.…”

Section: Jcdpmentioning

confidence: 99%

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Effect of Different Surface Treatments and Thermocycling on Bond Strength of a Silicone-based Denture Liner to a Denture Base Resin

Nakhaei¹,

Dashti²,

Ahrari³

et al. 2016

The Journal of Contemporary Dental Practice

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Aim:The aim of this study is to evaluate the effects of three different surface treatments and thermocycling on the tensile strength of a silicone lining material to denture resin. Materials and methods:A total of 96 cube-shaped specimens were fabricated using heat-cured polymethyl methacrylate (PMMA) denture base resin. Three millimeters of the material was cut from the midsection. The specimens were divided into four groups. The bonding surfaces of the specimens in each group received one of the following surface treatments: no surface treatment (control group), airborne particle abrasion with 110 µm alumina particles (air abrasion group), Er:yttrium aluminum garnet laser irradiation (laser group), and air abrasion + laser. After the lining materials were processed between the two PMMA blocks, each group was divided into two subgroups (n = 12), either stored in distilled water at 37ºC for 24 hours or thermocycled between 5 and 55ºC for 5,000 cycles. The specimens were tested in tensile and shear strength in a universal testing machine. Data were analyzed with two-way analysis of variance and Tamhane's post hoc tests (α = 0.05). The mode of failure was determined, and one specimen in each group was examined by scanning electron microscopy. Effect of Different Results:Surface-treated groups demonstrated significantly higher tensile strengths compared to the control group (p < 0.001). Nonetheless, no significant differences were found between surface-treated groups (p > 0.05). The tensile strength was significantly different between thermocycled and waterstored specimens (p = 0.021). Conclusion:Altering the surface of the acrylic denture base resin with air abrasion, laser, and air abrasion + laser increased the tensile strength. Thermocycling resulted in decrease in bond strength of silicone-based liner to surface-treated acrylic resin.Clinical significance: Pretreatment of denture base resins before applying the soft liner materials improves the bond strength. However, thermocycling results in decrease in bond strength of soft denture liner to surface-treated acrylic resin.

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Section: Discussionmentioning

confidence: 99%

Section: Jcdpmentioning

confidence: 99%

Section: Jcdpmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Different Surface Treatments and Thermocycling on Bond Strength of a Silicone-based Denture Liner to a Denture Base Resin

Nakhaei¹,

Dashti²,

Ahrari³

et al. 2016

The Journal of Contemporary Dental Practice

View full text Add to dashboard Cite

show abstract

“…14,17,25 This may result from swelling and stress built up at the bond interface, or of a change in the visco-elastic properties of the soft liner, causing the plasticizers to leach out, rendering the material stiffer and thus better able to transmit the external loads to the bond site. [18][19][20][21][22] The results disagree with those of others, who reported that bond strength of soft liners was unaffected or increased with water storage.…”

Section: [ ( G R a P H _ 3 ) T D $ F I G ]mentioning

confidence: 99%

Comparative evaluation of the tensile bond strength of two silicone based denture liners with denture base resins

Mittal

Kumar

Sandhu³

et al. 2016

Medical Journal Armed Forces India

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“…Amin et al 20 were investgated the effect of water on the liner/denture base interface and on the liner's bonding properties to acrylics. They have reported that long-term exposure of the liners to water has a destructive effect.…”

Section: Discussionmentioning

confidence: 99%

Investigation of the effect of two different denture cleansers on the bond strength of soft liners

Demir¹,

Sarı²,

Görler³

et al. 2017

IJAR

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This study aim to investigate the effect of denture cleansers and standblasting on tensile bond strength of soft denture liners after 3 and 6 mounths of immersion.For each of the liner materials, 70 test specimens were prepared according to test the requirements. Half of the 70 test specimens were sandblasted with 50 μm Al2O3 at 2 bar for 10 s. The resilient liner specimens were processed between 2 polymethyl methacrylate (PMMA) blocks. Before tensile testing, five of the liner specimens were kept in water or soaked in two cleansing solutions during 3 and 6 month. Bonding strength of the liners to PMMA was compared by tensile test with the use of universal testing machine at a crosshead speed of 50 mm/min. The mean value and standard deviation of the specimens were made by using a multifactorial analysis of variance (α=0.05). The type of failure was assessed visually.No significant difference was found between the groups for the tested conditions used (p>0.05). The most frequent failure mode was cohesive for Permaflex (P) specimens, adhesive for sandblasting groups, and a mixed type of failure was observed for GC Reline Soft (GC) material.The denture base cleaners affect the bond strength of PMMA/resilient liner. Permaflex and GC Reline Soft as resilient liners were found to have adequate adhesive values for clinical use.

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The nature of the interface between polymethyl methacrylate denture base materials and soft lining materials

Cited by 95 publications

References 1 publication

Effect of Different Surface Treatments and Thermocycling on Bond Strength of a Silicone-based Denture Liner to a Denture Base Resin

Effect of Different Surface Treatments and Thermocycling on Bond Strength of a Silicone-based Denture Liner to a Denture Base Resin

Comparative evaluation of the tensile bond strength of two silicone based denture liners with denture base resins

Investigation of the effect of two different denture cleansers on the bond strength of soft liners

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