Recently, the use of oral fluids such as GCF, whole saliva and oral rinse as a means of evaluating host-derived products, as well as exogenous components (for instance: oral microorganisms and microbial products), has been suggested as potential sources and diagnostic markers, respectively for disease susceptibility (Sahingur and Cohen 2004; Buduneli and Kinane 2011). In fact, as whole saliva represents a pooled sample with contributions from all periodontal sites, analysis of biomarkers in saliva may provide an overall assessment of disease status as opposed to site-specific GCF analysis. This review will analyze the mechanisms involved in the breakdown of periodontal supporting tissues during chronic periodontitis, with a special. | Teacher Link 1A Listening and writing New ENGLISH file Pre-intermediate Description Students do a memory dictation Lesson link Use this activity after exercise 2c Time 15 minutes Extra material None Instructions a Tell SS you re going to give them a memory dictation . This is a good solid activity for the first lesson and it will help you to see how confident they are with writing spelling and punctuation. b Tell SS to put their pens down and just listen. Then read through this dictation text three times at a steady speed. My name s David and I come from Dublin in Ireland. I m a student at Liverpool University. I m in the first year and I study modern languages. In my free time I m in a rock band with my friends and my sister. This Saturday we re going to play in a concert and we re all really excited about it c Then write the words in bold on the board like this leaving room for the rest of each sentence __DavidIreland. __student_Liverpool_. __first_modern languages. __rock band with. This Saturdayconcertexcited_. d SS have to rebuild the text in pairs using the words on the board to help them. If they have problems you can write extra words on the board. e When they ve finished ask each pair to read out a sentence. Other pairs should listen and say if anything is missing or if everything is correct. You could get a student to complete the sentences on the board. f When everyone is sure they ve got the correct text ask individual SS round the class to describe themselves using the text as a model . My name s Ana and I come from Madrid . Photocopiable Oxford University Press 2006 elt New ENGLISH FILE Pre-intermediate Teacher Link 1B Vocabulary and reading Description Students complete texts about Claire and Nina Lesson link Use this activity
