Manufacture of Different Types of Thermoplastic

Ardelean, Lavinia; Borţun, Cristina Maria; Podariu, Angela Codruţa; Rusu, Laura Cristina

doi:10.5772/35530

Cited by 16 publications

(31 citation statements)

References 3 publications

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“…Pressure, temperature and injecting time are automatically controlled by the injecting unit. Dentures obtained using this technology have excellent esthetics and good compatibility [7,12,13,22]. Injecting thermoplastic resins into molds is not a common technology in dental laboratories because the need of expensive equipment and this could be a disadvantage.…”

Section: Presentation Form and Injectionmentioning

confidence: 99%

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Thermoplastic Resins used in Dentistry

Ardelean¹,

Borţun²,

Podariu³

et al. 2015

Thermoplastic Elastomers - Synthesis and Applications

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Thermoplastic materials such as polyamides (nylon), acetal resins, epoxy resins, polystyrene, polycarbonate resins, polyurethane and acrylic thermoplastic resins were introduced in dentistry as an alternative to classic resins, which have major disadvantages such as the toxicity of the residual monomer, awkward wrapping system and difficult processing. Indications for thermoplastic resins include partial dentures, preformed clasps, partial denture frameworks, temporary or provisional crowns and bridges, full dentures, orthodontic appliances, anti-snoring devices, different types of mouth guards and splints. Some flexible myofunctional therapy devices, used for orthodontic purposes, may also be made of thermoplastic silicone polycarbonate-urethane. The main characteristics of thermoplastic resins used in dentistry are as follows: they are monomerfree and consequently nontoxic and nonallergenic, they are injected by using special devices, they are biocompatible, they have enhanced esthetics and they are comfortable to wear.

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Section: Presentation Form and Injectionmentioning

confidence: 99%

Section: Presentation Form and Injectionmentioning

confidence: 99%

Thermoplastic Resins used in Dentistry

Ardelean¹,

Borţun²,

Podariu³

et al. 2015

Thermoplastic Elastomers - Synthesis and Applications

Self Cite

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“…Acrylates and Their Alternatives in Dental Applications http://dx.doi.org/10.5772/intechopen.69010in time, stability, resistance to deformation, wear and solvents, very good tolerance due to the absence or reduced quantity of residual monomer, responsible for allergies in a lot of patients, no porosity which prevents development of microorganisms and deposits [4].…”

Section: Thermoplastic Resins Manufactured By Injectionmentioning

confidence: 99%

“…Therefore, great skill is required when pouring the mould. Porosity may also occur due to improper preparing of the acrylate [4,18].…”

Section: Self-curing Acrylics Manufactured By Castingmentioning

confidence: 99%

“…Besides classic heat-curing, alternative technologies namely, casting and injection moulding are nowadays available in manufacturing acrylic resins for dental applications. In the case of alternative resins, light-curing or microwave polymerization techniques are also used [4,5]. Light-curing, as a polymerization method for dental materials, appeared in the 1970s.…”

Section: Introductionmentioning

confidence: 99%

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Acrylates and Their Alternatives in Dental Applications

Ardelean¹,

Borţun²,

CodrutaPodariu³

et al. 2017

Acrylic Polymers in Healthcare

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Acrylic resins dominated dentures technology for several decades. Due to their many disadvantages, new classes of resins, which promise better quality, constantly appear.Mechanical properties of acrylic resins, including fracture behaviour, water absorption and mechanical strength degradation caused by the exposure to saliva of classical heatcured acrylic resins compared to alternative urethane-based light-cured resins, were carried out. The allergy potential of acrylic resins was evaluated by in vivo and in vitro tests. New choices of resins, like thermoplastic injected resins, light-cured or milled highperformance polymers, with better properties compared to acrylics, suitable for dental applications are being presented.

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Cross‐linking of γ‐Cyclodextrin Using Non‐toxic Polyethylene Glycol Spacer Units

Dossi

Bolton²,

Kister

et al. 2021

ChemistrySelect

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The crystalline cyclic oligosaccharide γ‐cyclodextrin (γCD) is a natural, non‐toxic and biodegradable precursor that can be used to prepare innovative polymers. We cross‐linked γCD with variable quantities of non‐toxic polyethylene glycol diglycidyl ether (PEGDGE) in aqueous NaOH to form 3D structures with tunable physicochemical properties. Mixtures with a 5 : 1 PEGDGE:γCD molar ratio produced a cross‐linked material that was soluble in water and organic solvents, underwent glass transition at −23 °C. The properties of this material were further modified by additional curing with PEGDGE or nitration reaction. Curing produced an insoluble polymeric material with excellent swelling abilities (200 % in water) and decreased glass transition temperature to −37 °C. The nitrated cross‐linked γCD was soluble in common organic solvents and underwent glass transition at +19 °C, achieving thermal stability below 190 °C. These novel γCD polymers are promising materials for applications in the pharmaceutical and food industries and environmental remediation.

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Manufacture of Different Types of Thermoplastic

Cited by 16 publications

References 3 publications

Thermoplastic Resins used in Dentistry

Thermoplastic Resins used in Dentistry

Acrylates and Their Alternatives in Dental Applications

Cross‐linking of γ‐Cyclodextrin Using Non‐toxic Polyethylene Glycol Spacer Units

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