tish kariesi
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About "tish kariesi"
powerpoint presentation mavzu: karies. mavzu rejasi: tish kariesining kelib chiqish nazariyalari tish kariesining tasnifi 1. tish chirishining kelib chiqishi nazariyalari 2. tish chirishining tasnifi 3. xulosa reja: tish kariyesining kelib chiqishi nazariyalari millerning kimyoviy nazariyasi 1880-yillarda paydo bo'lib, uglevodlar fermentatsiya natijasida kislota hosil qilishi, bu esa tish qattiq to'qimalarini demineralizatsiyalashini ta'kidlaydi. proteolitik nazariya tish emalining organik matritsasi mikroorganizmlar tomonidan parchalanadi, keyin esa mineral qismini buzadi, deb hisoblaydi, bu esa kariyes rivojlanishiga olib keladi. chemotik-parazitar nazariya kariyes rivojlanishi uglevodlar va mikroorganizmlar o'rtasidagi murakkab o'zaro ta'sirdan kelib chiqadi, deb ta'kidlaydi, bu esa ema...
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