Effects of water boiling, microwave, and water bath post-polymerization on mechanical properties of acrylic denture resins

Kostić, Milena; Nikolić, Ljubiša; Nikolić, Vesna; Petković, Dušan; Igić, Marko; Krunić, Nebojša; Manić, Miodrag; Gligorijević, Nikola; Radenković, Goran

doi:10.2298/hemind170924008k

Cited by 7 publications

(10 citation statements)

References 46 publications

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“…Previous studies have indicated the potentially toxic effect of certain unbound substances from acrylic materials 11,[16][17][18] . Research by Kostic et al indicated a decrease in the amount of these components in the samples of the material after their immersion in the aqueous environment 19 and the post-polymerization procedures 20 .…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

A release of potentially toxic components from the acrylic resins for soft relining dentures

Bradić-Vasić¹,

Kostić²,

Igić³

et al. 2019

Acta stomatologica Naissi

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Uvod: Meki akrilati pripadaju grupi hladno polimerizovanih materijala koji se aplikuju na bazalnu površinu zubne proteze kako bi se eliminisale mehaničke iritacije, omogućilo ozdravljenje oštećene ili inflamirane sluzokože ili se oralno tkivo pripremilo (kondicioniralo) za prihvatanje nove nadoknade. Cilj istraživanja bio je ispitivanje ritma oslobađanja komponenti mekih akrilata u tri različita modela veštačke pljuvačke, u toku tridesetodnevnog opservacionog perioda. Materijal i metode: U ispitivanju su korišćena dva meka akrilata:poli (etil metakrilat)/ n-butil metakrilat i poli (etil metakrilat) / metil metakrilat, koji su odlagani u tri različita modela veštačke pljuvačke, u okviru tri opservaciona perioda: jedan, sedam i trideset dana. Ispitivanje je obuhvatilo detekciju metil metakrilata, etil metakrilata, butil metakrilata, di butil ftalata i benzoil peroksida tečnom hromatografijom pod visokim pritiskom. Rezultati: Količina oslobođenih komponenti srazmerno se povećava sa porastom trajanja opservacionog perioda, bez obzira na model veštačke pljuvačke.Najviše vrednosti svih ispitivanih parametara uočene su nakon tridesetodnevnog opservacionog perioda. Model veštačke pljuvačke nije uticao na ritam oslobađanja komponenti, što znači da se one nesmetano oslobađaju u usnu duplju bez obzira na sastav pljuvačke pacijenta. Zaključak: Sa porastom dužine opservacionog perioda došlo je i do očvršavanja materijala, čime se završava njihova upotrebna vrednost.

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Section: Discussionmentioning

confidence: 99%

“…Istraživanje Kostić i sar. ukazalo je na smanjenje količine ovih komponenti u uzorcima materijala nakon njihovog potapanja u vodenu sredinu 19 i postpolimerizacionih procedura 20 .…”

Section: Diskusijaunclassified

A release of potentially toxic components from the acrylic resins for soft relining dentures

Bradić-Vasić¹,

Kostić²,

Igić³

et al. 2019

Acta stomatologica Naissi

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“…Incomplete polymerization increases liquid absorption and solubility of dental acrylates. Residual monomer acts as a plasticizer in the material, but the decrease in the quality of the material can be attributed to the release of residual monomer into saliva and the compensatory absorption of liquid from the oral environment, which leads to the plasticization of the material and makes it more flexible and resilient [ 36 ]. The amount and rate of water absorption depend on network density, potential hydrogen bonds, and polar interactions.…”

Section: Physico-mechanical Properties Of Dental Acrylate Polymersmentioning

confidence: 99%

The Use of Acrylate Polymers in Dentistry

et al. 2022

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The manuscript aimed to review the types of acrylate polymers used in dentistry, as well as their chemical, physical, mechanical, and biological properties. Regarding their consistency and purpose, dental acrylate polymers are divided into hard (brittle), which includes acrylates for the production of plate denture bases, obturator prostheses, epitheses and maxillofacial prostheses, their repairs and lining, and soft (flexible), which are used for lining denture bases in special indications. Concerning the composition and method of polymerization initiation, polymers for the production of denture bases are divided into four types: heat-, cold-, light-, and microwave-polymerized. CAD/CAM acrylate dentures are made from factory blocks of dental acrylates and show optimal mechanical and physical properties, undoubtedly better monomer polymerization and thus biocompatibility, and stability of the shape and colour of the base and dentures. Regardless of the number of advantages that these polymers have to offer, they also exhibit certain disadvantages. Technological development enables the enhancement of all acrylate properties to respond better to the demands of the profession. Special attention should be paid to improving the biological characteristics of acrylate polymers, due to reported adverse reactions of patients and dental staff to potentially toxic substances released during their preparation and use.

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“…The release of residual monomer into the oral cavity is intensive [38,39], especially in the case of cold polymerized acrylates, which contain a significant amount of residual monomer. Some studies [31][32][33][34] have shown that the additional polymerization (post-polymerization) of acrylate polymers and immersion into a water bath, can improve their biological and mechanical properties, by decreasing residual monomer content.…”

Section: Intramuscular Implantation Testmentioning

confidence: 99%

Determination of residual monomer content in dental acrylic polymers and effect after tissues implantation

Kostić

Stanojevic

Tačić

et al. 2020

Biotechnology & Biotechnological Equipment

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The aim of the present study was to determine the content of residual monomer methyl methacrylate (MMA) in cold and hot polymerized poly(methyl methacrylate) (PMMA), both widely applicable in dentistry, by using MHE-GC-MS (multiple headspace extraction analysis by gas chromatographymass spectrometry) in combination with GC-FID (gas chromatography with flame-ionization detection). The samples of PMMA were obtained by free-radical polymerization of MMA at room temperature (cold polymerized PMMA) and at 100 C (hot polymerized PMMA), according to the manufacturer's instructions. The MHE-GC-MS method consisted of ten successive extractions of MMA from the polymerized samples. According to the constructed calibration curve, the content of residual MMA in PMMA samples (mg MMA /g PMMA ) was determined. Intramuscular implantation of sample materials was performed in experimental animals (rats) in order to demonstrate potential adverse effects of the unpolymerized residual reactants to the tissue in direct contact with polymeric implants. The content of residual monomer in cold polymerized PMMA was higher (15.75 mg MMA/ g PMMA ) in comparison to hot polymerized PMMA (10.96 mg MMA/ g PMMA ). The implanted samples of cold-polymerized acrylic resin showed intense inflammatory response of the surrounding tissue. According to the obtained results, hot polymerized PMMA is safer for use in dentistry.

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Effects of water boiling, microwave, and water bath post-polymerization on mechanical properties of acrylic denture resins

Cited by 7 publications

References 46 publications

A release of potentially toxic components from the acrylic resins for soft relining dentures

A release of potentially toxic components from the acrylic resins for soft relining dentures

The Use of Acrylate Polymers in Dentistry

Determination of residual monomer content in dental acrylic polymers and effect after tissues implantation

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