Evaluation of Fluoride release from orthodontic acrylic resin by using two different polymerizations techniques: An InVitro Study

Sabir, Diyar B.; Omer, Zana Qadir

doi:10.15218/edj.2019.04

Cited by 4 publications

(8 citation statements)

References 18 publications

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“…At the moment, it is 20% concentration of glass in the acrylic resin [ 22 ]. The results of flexural strength of acrylic resins in the case of bioactive glasses tested in our case are in line with [ 32 ]. Silanized samples have better resistance to breakage even after 2 months of storage in distilled water.…”

Section: Discussionsupporting

confidence: 88%

“…Then, in a solution of pH = 4, all the fluoride was quickly washed out within 1 day. This is similar to the direct addition of fluorine compounds, e.g., NaF, to acrylic resin causes a very fast release of this ion within 1–7 days [ 32 ].…”

Section: Discussionmentioning

confidence: 89%

“…The matrix layer, which consisted of calcium and aluminum acetates and fluoride ions, was easily penetrated by water. Therefore, the leaching of fluoride ions from the surface of the so-modified matrix into the aqueous solution may be easier than the surface of the glass filler itself [ 32 ]. These authors have concluded that acrylic resin can release fluoride ions for 56 days for glasses [ 32 ] or 15 days for dopped ions to acrylic resins [ 33 , 34 , 35 ].…”

Section: Discussionmentioning

confidence: 99%

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Bioactive Glass-Enhanced Resins: A New Denture Base Material

Raszewski¹,

Chojnacka

Mikulewicz

et al. 2023

Materials

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Background: The creation of the denture base material with bioactive properties that releases ions and produces hydroxyapatite. Methods: Acrylic resins were modified by the addition of 20% of four types of bioactive glasses by mixing with powders. Samples were subjected to flexural strength (1, 60 days), sorption and solubility (7 days), and ion release at pH 4 and pH 7 for 42 days. Hydroxyapatite layer formation was measured using infrared. Results: Biomin F glass-containing samples release fluoride ions for a period of 42 days (pH = 4; Ca = 0.62 ± 0.09; P = 30.47 ± 4.35; Si = 22.9 ± 3.44; F = 3.1 ± 0.47 [mg/L]). The Biomin C (contained in the acrylic resin releases (pH = 4; Ca = 41.23 ± 6.19; P = 26.43 ± 3.96; Si = 33.63 ± 5.04 [mg/L]) ions for the same period of time. All samples have a flexural strength greater than 65 MPa after 60 days. Conclusion: The addition of partially silanized bioactive glasses allows for obtaining a material that releases ions over a longer period of time. Clinical significance: This type of material could be used as a denture base material, helping to preserve oral health by preventing the demineralization of the residual dentition through the release of appropriate ions that serve as substrates for hydroxyapatite formation.

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Section: Discussionsupporting

confidence: 88%

Section: Discussionmentioning

confidence: 89%

Section: Discussionmentioning

confidence: 99%

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Bioactive Glass-Enhanced Resins: A New Denture Base Material

Raszewski¹,

Chojnacka

Mikulewicz

et al. 2023

Materials

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“…10% and 20%; however, the maximum NaF concentration was 20% since the dough stage did not reach 25% or more. Following two months of immersion in deionized water, the surface roughness and hardness increased; this can be attributed to fluoride's release, and this agreed with the finding of (7) The wearing removable partial or complete dentures by geriatric patients has increased in proportion (13) . Thus, different concentrations (1%, 3%, and 5%) of sodium fluoride have been mixed with acrylic resin which is used in the fabrication of removable prostheses to assess the effects of these different concentrations on the surface's roughness and hardness of the acrylic resin.…”

Section: Introductionsupporting

confidence: 83%

Assessment of the surface roughness and hardness of acrylic resin after incorporation of sodium fluoride salts (An In-vitro Study)

Hussein

2023

MDJ

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The control of oral hygiene is of great importance, particularly in dental work, to prevent caries caused by bacteria. One method to inhibit bacterial growth is usually by using fluoridated dental materials. The objectives are to assess the effect of sodium fluoride powder (NaF) inclusion with different concentrations on the surface roughness and hardness of heat-cured acrylic resins. A total of forty disc-shaped samples with a diameter of (12±0.1) mm and a thickness of (2±0.1) mm have been fabricated from heat cure acrylic resin. They were grouped into four subgroups according to different concentrations of NaF with 10 specimens for each group. Sodium fluoride powder (NaF) was incorporated into the monomer in concentrations of 0% (control group), 1%, 3%, and 5%. Then mixing was done with polymer according to manufacturer instructions and the conventional flasking, and packing procedures were used. Finally, the specimens are subjected to hardness and surface roughness tests. The results of this study revealed that the lowest mean value surface roughness (Ra) was with the (5%) group of NaF (7828). While, for the surface hardness test, the group (5%) of Naf showed the highest mean value among their subgroups (82.30). According to the results of the current study, sodium fluoride powder (NaF) has a positive effect on both the surface roughness and hardness of acrylic resin.

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“…Thus, even a short-term contact with water causes rapid washing out of this filler from acrylic resin. Resins modified with NaF and 2-hydroxyethyl methacrylate (HEMA) can release ions up to 28 days, as reported by Sabir et al [37]. However, this was not confirmed in the present study, where fluoride ions could be detected in distilled water up to 7 days.…”

Section: Discussioncontrasting

confidence: 66%

Release and Recharge of Fluoride Ions from Acrylic Resin Modified with Bioactive Glass

Raszewski¹,

Nowakowska

Więckiewicz

et al. 2021

Polymers

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Background: Oral hygiene is essential for maintaining residual dentition of partial denture wearers. The dental material should positively affect the oral environment. Fluoride-releasing dental materials help to inhibit microbial colonization and formation of plaque as well as to initiate the remineralization process in the early cavity area. Aim: To evaluate fluoride ion release and recharge capacity, sorption, and solubility of polymethyl methacrylate (PMMA) dental resin modified with bioactive glass addition. Materials and methods: Two bioactive glass materials (5 wt% Kavitan, 10 wt% Kavitan, and 10 wt% Fritex) and pure 10 wt% NaF were added to dental acrylic resin. After polymerization of the modified resins, the release levels of fluoride anions were measured based on color complex formation by using a spectrophotometer after 7, 14, 28, and 35 days of storage in distilled water at 37 °C. Subsequently, specimens were brushed with a fluoride-containing tooth paste on each side for 30 s, and the fluoride recharge and release potential was investigated after 1, 7, and 14 days. Sorption and solubility after 7 days of storage in distilled water was also investigated. Results: The acrylic resins with addition of 10% bioactive glass materials released fluoride ions for over 4 weeks (from 0.14 to 2.27 µg/cm2). The amount of fluoride ions released from the PMMA resin with addition of 10 wt% Fritex glass was higher than that from the resin with addition of 10 wt% Kavitan. The acrylic resin containing 10 wt% NaF released a high amount of ions over a period of 1 week (1.58 µg/cm2), but the amount of released ions decreased rapidly after 14 days of storage. For specimens containing 5 wt% Kavitan glass, the ion-releasing capacity also lasted only for 14 days. Fluoride ion rechargeable properties were observed for the PMMA resin modified with addition of 10 wt% Fritex glass. The ion release levels after recharge ranged from 0.32 to 0.48 µg/cm2. Sorption values ranged from 10.23 μm/mm3 for unmodified PMMA resin to 12.11 μm/mm3 for specimens modified with 10 wt% Kavitan glass. No significant differences were found regarding solubility levels after 7 days. Conclusions: The addition of 10 wt% Fritex and 10 wt% Kavitan bioactive glass materials to heat-cured acrylic resin may improve its material properties, with bioactive fluoride ion release ability lasting for over 4 weeks. The resin modified with 10 wt% Fritex glass could absorb fluoride ions from the toothpaste solution and then effectively release them. Addition of fluoride releasing fillers have a small effect on sorption and solubility increase of the modified PMMA resin. Clinical significance: The addition of bioactive glass may be promising in the development of the novel bioactive heat-cured denture base resin.

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Evaluation of Fluoride release from orthodontic acrylic resin by using two different polymerizations techniques: An InVitro Study

Cited by 4 publications

References 18 publications

Bioactive Glass-Enhanced Resins: A New Denture Base Material

Bioactive Glass-Enhanced Resins: A New Denture Base Material

Assessment of the surface roughness and hardness of acrylic resin after incorporation of sodium fluoride salts (An In-vitro Study)

Release and Recharge of Fluoride Ions from Acrylic Resin Modified with Bioactive Glass

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