Influence of pH and storage time on the sorption and solubility behaviour of three composite resin materials

Örtengren, Ulf; Андерссон, Фредрик; U, Elgh; Terselius, Björn; Karlsson, Stig

doi:10.1016/s0300-5712(00)00055-5

Cited by 145 publications

(159 citation statements)

References 25 publications

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“…Water sorption and solubility studies have generally revealed that W sp and W sl values change in the same way. 25 Many researchers 16,18,26 have determined that materials with low sorption demonstrate low solubility. Some studies, however, suggest that materials with high water sorption do not necessarily demonstrate high solubility, 27 as shown here.…”

Section: Discussionmentioning

confidence: 99%

Water sorption and solubility of bulk-fill composites polymerized with a third generation LED LCU

Misilli

Gönülol

2017

Braz. oral res.

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Section: Discussionmentioning

confidence: 99%

Water sorption and solubility of bulk-fill composites polymerized with a third generation LED LCU

Misilli

Gönülol

2017

Braz. oral res.

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“…Therefore, it would be expected that the storage time will have an influence upon water sorption and consequently mechanical properties. 23 It has been shown considerable time is needed for resin composite to become completely saturated by the water which may lead to a stabilization in hardness changes. Therefore, in order to compare the effect of water on the hardness of these materials more objectively, further longterm studies are needed.…”

Section: Roydhousementioning

confidence: 99%

Effect of G-Coat Plus on the mechanical properties of glass-ionomer cements

et al. 2013

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Background: Although various mechanical properties of tooth-coloured materials have been described, little data have been published on the effect of ageing and G-Coat Plus on the hardness and strength of the glass-ionomer cements (GICs). Methods: Specimens were prepared from one polyacid-modified resin composite (PAMRC; Freedom, SDI), one resinmodified glass-ionomer cement; (RM-GIC; Fuji II LC, GC), and one conventional glass-ionomer cement; (GIC; Fuji IX, GC). GIC and RM-GIC were tested both with and without applying G-Coat Plus (GC). Specimens were conditioned in 37°C distilled water for either 24 hours, four and eight weeks. Half the specimens were subjected to a shear punch test using a universal testing machine; the remaining half was subjected to Vickers Hardness test. Results: Data analysis showed that the hardness and shear punch values were material dependent. The hardness and shear punch of the PAMRC was the highest and GIC the lowest. Applying the G-Coat Plus was associated with a significant decrease in the hardness of the materials but increase in the shear punch strength after four and eight weeks. Conclusions: The mechanical properties of the restorative materials were affected by applying G-Coat Plus and distilled water immersion over time. The PAMRC was significantly stronger and harder than the RM-GIC or GIC.

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“…The results indicate that the lowest value of transverse strength for the acrylic resin specimens was produced by the (Alum) solution about (77.3 MPa), while the highest value was produced by the (Distal water) which was about (82 MPa). (1) (Soda + Alum) produced a significant increase in the optical density of the specimens due to the acidic pH of the solution that leads to an increase of the water sorption value (0.71 mg/cm 2 ) which in turn leads to the deposition or penetration of the colorants constituents of the solution into the acrylic resin specimen (Ortengren et al, 2001). It may also be due to the gelatinous aluminum hydroxide precipitate (AL(OH) 3 ) that is formed when add any base to the aqueous solution of aluminum salt.…”

Section: Immersion Time (8 Hrs)mentioning

confidence: 99%

Preparation and evaluation a new formula of denture cleansers (a comparative study)

Taqa

Bashi

–Aubadi

2016

IJDR

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The objective of this study is to prepare and study chemical compounds for cleaning denture from locally available materials. The chemical compounds solutions were (sodium bicarbonate with alum), (sodium bicarbonate with citric acid), (sodium bicarbonate with apple vinegar), (sodium bicarbonate with clear commercial vinegar), (sodium bicarbonate with thyme oil), (saturated salt solution), (clear commercial vinegar), (alum). The main study, the effects of the chemical compounds solutions were evaluated on the (color, water Sorption and transverse strength) of heat cured denture base material. The t-test showed that the highest increase in optical density for the specimens immersed in (alum), (sodium bicarbonate +alum), (sodium bicarbonate + apple vinegar) solutions at 1/2 hr immersion and it increased more at 8 hrs immersion. The conclusions of this study showed that the safest prepared solutions on the denture base material that could be used as denture cleansers are (sodium bicarbonate{7g}with clear commercial vinegar{5ml}), (sodium bicarbonate {2g} with thyme oil {3.57g}), (saturated salt solution {40g}) at 1/2 hr and 8 hrs of immersion. While, (sodium bicarbonate {2g} with citric acid {4.57g}) solution appeared its safety at 1/2 hr immersion only.

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Influence of pH and storage time on the sorption and solubility behaviour of three composite resin materials

Cited by 145 publications

References 25 publications

Water sorption and solubility of bulk-fill composites polymerized with a third generation LED LCU

Water sorption and solubility of bulk-fill composites polymerized with a third generation LED LCU

Effect of G-Coat Plus on the mechanical properties of glass-ionomer cements

Preparation and evaluation a new formula of denture cleansers (a comparative study)

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