Speech Therapy @thespeechclinic_dubai Jaw grading bite blocks @talktoolstherapy The Jaw grading bite blocks is developed by the Talktools USA, to teach and develop adequate strength at each level of jaw height required for speech sound production. The jaw position for each sounds is replicated in bite blocks with numbers. For example narrow bite blocks are used to teach the lip closure sounds like /m/(higher jaw position) and then as they get progressively wider focusing on the lower jaw positio