This presentation will initially present and reflect upon the original design and construction of The Lancaster Lingualised Functional Appliance.  I will also present the very latest versions showing modification to integrate with fixed appliances.

• •Know the key features of the original appliance
• •Have appreciation of design, application, construction of (LLF)
• •Know the materials that have been used
• •Design and fabricate the (LLF) and latest versions
• •Recognise the suitable application and limitations of the (LLF)