Dental Tribune Untited Kingdom Edition

15Lab TribuneApril 16-22, 2012United Kingdom Edition Speakers: Prof Nasser Barghi Dr Richard Kahan Prof Gianluca Gambarini Dr Wyman Chan Dr John Moore Dr Ajay Kakar Ms Jackie Coventry Dr Mona Kakar Basil Mizrahi Fraser McCord Mhari Coxon Amit Patel Anthony Roberts 18th and 19th May 2012 Millennium Gloucester Hotel & Conference Centre, London Kensington info@smile-on.com | www.clinicalinnovations.co.uk | 020 7400 8989 Switch on to new ideas EARLY BOOKING DISCOUNT cedure (Fig C). System Components The spacer bar is used to cre- ate a retention chamber. Made of malleable metal, the bar is designed to sit intimately against the ridge. It can be easily bent, burnished and adapted to almost any alveolar ridge. (Fig D). Valves Two one way valves designed to expel the air from beneath the dentures. The central hole in the valve body is described as the inlet, and the valve cov- er as the exhaust (Fig F). Processing Caps As their name suggests the caps are fitted onto the valve bodies before the instillation procedure. Their role is to protect the valves. They are removed only after the polish- ing stage (Figs G and H). Diaphragms Two diaphragms and two spares come with the kit. These tiny plastic discs seal the inlet under negative at- mospheric pressure and release the pressure under resting conditions, at the rate of 10mmHg per 15 seconds (Fig I). The service key has two extremities. The upper part is used to grip, close & open both the valve covers and the pro- cessing caps. The lower part is a slightly larger replica of the valve and may be used as a gauge for depth and diameter (Fig J). page 16DTà ‘Two tiny one-way valves, embedded into the lingual or palatal aspect of the denture bas, draw air from beneath the denture via two channels, collectively open to a retention chamber’ Fig 16 Fig 17 Fig 18 Fig 19 Fig 20 Fig 21 Fig 22 Fig 23 Fig 25Fig 24