Characterization of mouth-formed mouthguards: thermal performance
| Autor: | Philippe Poisson, Jean-Luc Barou, Julien Petit, Sandra Guérard |
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| Rok vydání: | 2014 |
| Předmět: |
Materials science
Matériaux [Sciences de l'ingénieur] Mécanique: Thermique [Sciences de l'ingénieur] Flange law.invention Differential scanning calorimetry law Thermal Transition Temperature Crystallization Composite material General Dentistry Mécanique: Biomécanique [Sciences de l'ingénieur] Fusion Specific heat Calorimetry Differential Scanning Mouthguard materials Equipment Design Standardization Polymer structure Polyethylene Ceramics and Composites Mouth Protectors Polyvinyls Polyvinyl acetate-polyethylene copolymers |
| Zdroj: | Dental materials journal. 33(6) |
| ISSN: | 1881-1361 |
| Popis: | This study examined whether the thermo-modeling process suits the thermal properties of the material constituting mouth-formed mouthguards (MGs). Five mouth-formed MGs were compared: four commercially available MGs (SDI™, Gel Nano™, Opro Shield Gold™, and Kipsta R300™) and one prototype. Differential scanning calorimetry was used to determine melting (T(m)) and crystallization (T(c)) temperatures and specific fusion and crystallization enthalpies (∆H(f) and ∆H(c) (J/g)). MGs were modeled with recording of vestibular flange and occlusal cushion temperatures (Toccl). Tm ranged from 45.3°C to 53.0°C and Tc ranged from 40.9°C to 48.2°C. Specific heat of fusion ranged from 40.2 J/g to 62.0 J/g. Toccl was higher than Tm for all MGs except Kipsta R300™. Guidelines provided by manufacturers may not be adapted to thermal properties of the MG material. To ensure proper thermomodeling, heating and biting durations should be adjusted. |
| Databáze: | OpenAIRE |
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