Maintenance of Sterility
Disposable material Materials and drugs use oral and maxillofacial surgery, such a as , scalpel blades, and syringes with needles are sterilization
Methods of Sterilization or Disinfection ‘of Selected Dental Instruments
by the manufacturer with a variety of techniques, including gases, autoclaving, filtration, and irradiation. To maintain sterility the dentist must only remove the material or drug from its container properly. Most surgical supplies are double wrapped; the only common exception is
scalpel blades. The outer wrapper is designed to be handled in a nonsterile fashion and usually is sealed in a manner that allows an unsterile Individual to unwrap it and discharge the material still wrapped in a sterile inner
wrapper. The unsterile individual can either allow the surgical material in the sterile inner wrapper to drop onto a sterile part of the surgical field or allow a sterilely gloved individual to remove the wrapped material in a sterilized manner (Fig. 5-4). Scalpel blades are handled in a similar
fashion; the unwrapped blade can be dropped onto the field or grasped in a sterile manner by another individual.
Surgical field 11IailltCI/(IIICC. An absolutely sterile surgical field is impossible to attain. For oral procedures even a relatively clean field is difficult to maintain because of oral and upper respiratory tract contamination. Therefore during oral and maxillofacial surgery the
goal is to prevent any organisms from the surgical staff or other patients from entering the patient’s wound.
Once instruments are sterilized or disinfected, they should be set up for use during surgery in ‘I manner that limits the likelihood of contamination by organisms foreign foreign to the patient’s maxillofacial flora. A flat platform, such as a Mayo stand, should be used and two Iayers of
sterile towels or waterproof paper should-be placed on it. Then the clinician or assistant should lay. the instrument pack on the platform and open out the edges in a sterile fashion (Fig. 5-5). Anything placed on the platform should be either sterile or disinfected. Care should be
taken not to allow excessive moisture to get on the towels or paper; if the towels become saturated, they can allow bacteria from the unsterile undersurface to wick up to the sterile instruments.