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dental materials

athletic mouthguards

athletic mouthguards aka mouth protectors, teeht protectors, mouth guard
athletic mouthguards use protect dentition, tmj, and other oral tissues against blows to chin, top of head, face, mouth-absorb shock
types/classification of athletic mouthguards stock, mouth formed, custom
stock not recommended- poor fit, bulky, interfere w/ talking & breathing, difficult to retain
mouth formed shell-liner or thermoplastic
mouth formed shell liner type hard outer shell-polyviyl chloride: soft liner platicized acrylic gel or silicone rubber-set by chemical or thermal
mouth formed shell liner type disadvantages exposure distorts shape and physical properties of these materials-NOT rec for athletes w/ ortho
mouth formed thermoplastic type immerse in boiling water-then blanch in cold water-adapt w/ mouth-can be used w/ fixed ortho if fitted by a dentist
custom made protectors thermoplastic material-polyvinyl acetate-polyethylene PVA PE
thermoplastic copolymer-polyvinyl acetate-polyethylene PVA physical reaction of hardening on cooling=thermoplastic
properties PVA PE thermal insulators, absorbs water, tensile strength, modulus and hardness decrease after water absorbs, but elongation, tear strength, and resilence increased
fluoride custom trays- thinner than mouthguards-ideal for high prev of caries or risk: allows all surfaces to be covered w/ fluoride at once, farbicate in dental office in same method as mouthguards,
APF 0.5%
NaF 1.1%
Sn2F 0.4%
ortho appliances minor mvmt, correct overbites,overjets;spacing probls, slight malocclusions, one type is Hawley-combo of acrylic and metal wires
nightguards bruxism, clenching, usually worn at night, alleviates wear on the dentition
space maintainers temp replacement for primary teeth lost prematurely-prevents drifting and closure of space
Obstructive Sleep Apnea (OSA) caused by reduced upper airway size and way the muscle acts, appliances advance mandible opening the airway
bleaching trays similar to fluoride trays
materials used in oral appliance fabrication-most are thermoplastics polycarbonates, polyethylene-(DH uses most)-polypropolene-polystyerences-polyvinyl chloride
maintenance of oral appliances rinse b4 and after use w/ cold water, brush daily, store in rigid container, protect from heat and pressure during storage, eval routinely for deterioration-min life is usually 2 yrs-bite through, tearing, general dererioration from chewing it
using a vacuum mold heated to resin to the model (sta vac) is an emample of which thermoplastic or thermoset thermoplastic
which type of mouth protector is fabricated by teh dental personnel custom
which arch of the study model is used maxilla
what type of resin was teh mouthguard material used in lab PVA PE
why should the model vacuum plate and frames by sprayed w/ Sta-Lube: so the material won't get stuck to the cast or the sta vac
where is the line drawn on the mouth guard to use as a guide for cutting-facial 2-3 mm from the mucobuccal fold, starting at most posterior molars
where is the line drawn on the mouth guard to use as a guide for cutting-lingual dividing alveoar arch and palate follow contours
storage and care in a rigid container, rinse w/ cold water b4 and after use, brush w/ cold water once a day
Created by: jfgwinn