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APPLICATION OF THERMOFORMED APPLIANCES IN PEDIATRIC DENTISTRY

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Abstract

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Thermoformed appliance, which has been recently introduced for dental usage, is an
appliance made of thermoformed sheets and formed with positive or negative pressure
under heat. Thermoplastic material is a kind of plastics and can be repeatedly softened
by heat. It is classified into hard elastic foil, hard/soft compound foil and soft elastic
foil, including BIO-PLAST, B10CRYL, IMPRELON, etc. It has been developed in 1969
and is available in various thickness, shape and color. There are two types of Vacuum
former for thermoplastic materials ; the pressure type and suction type. The former is
much better than the latter for fabrication of various appliances due to its higher
pressure. The authors have applied these appliances to some cases - chincap, active
retainer, individual Fluoride tray, mouth protector, bracket transfer mask, bruxism splint(
nightguard), Essix appliance - by pressure type Vacuum former(BiostarR).
The thermoplastic appliances have numerous advantages such as simple procedure,
short working time, clean and transparent product, less objectionable taste. But its
outstanding advantage would be its excellent biocompatibility bacause it has no
monomer and hence no tissue irritation. Although there is some limitations in its usage,
it can be used widely for various purposes especaily for pediatric dentistry.

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Thermoformed appliance; Vacuum-forming.;

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