NEET MDS - Master of Dental Surgery (Medical) NEET-MDS Oral Surgery-Asepsis and Sterilization Study Material (Page 1 of 1)

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Sterilisation: Physical Method of Sterilisation, Temperature

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Introduction

  • “Sterilisation is a process by which articles are freed of all microorganisms both in vegetative and spore state. “
  • Various method of sterilisation: there are two methods physical and chemical
Physical Methods of Sterilisation

Physical Method

  • Sunlight: it produces bactericidal activities. Its action is due to UV rays.
  • Drying: drying in air deletes many bacteria՚s but spores still remains unaffected.
  • Heat: based on nature of heat, sterilisation is of two types.
  • Dry heat: killing by dry heat can be done by:
    • Protein denaturation
    • Oxidative damage.
    • Toxic effect of elevated levels of electrolytes:
      • Red heat: u…

… (351 more words, 11 figures) …

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