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Magic Word Puzzle on "A Common Dental Disease" Fill in the blanks in each letter grid using the hints provided. Find the magic word which goes vertically down the framed boxes. 1 2 3 4 5 6 7 8 9 10 11 Hints: 1. The cavity at the centre of a tooth 2. The outer layer of a tooth 3. Tooth used for chewing food 4. Tooth used for cutting food 5. 6. 7. 8. 9. 10. 11. The last molar at the back of each jaw (two words) The layer under the enamel The exposed part of a tooth The tooth used for tearing food The embedded part of a tooth Hardened plaque between the gum and the teeth A sticky layer produced by bacteria on the teeth More to do: What is the cause of this disease? Key 1 2 3 4 5 6 7 8 9 10 11 p m w c o u l l a i s d a r c n o r i o c p p e r i o d o n t a l n a m e l n m e w e c t n n i e t s e i o t n r h e l a c q u u l e u s Periodontal disease is caused by bacterial plaque which changes gradually into calculus while spreading down into the region between the gum and the teeth.