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  Infection Control Recommendation from ADA
Barrier techniques. Gloves. Gloves must be worn when skin contact with body fluids or mucous membranes is anticipated, or when touching items or surfaces that may be contaminated with these fluids. After contact with each patient, gloves must be removed and hands must be washed and then regloved before treating another patient. Repeated use of a single pair of gloves by disinfecting them between patients is not acceptable. Exposure to disinfectants or other chemicals often causes defects in gloves, thereby diminishing their value as effective barriers. [21] Latex or vinyl gloves should be used for patient examinations and procedures. Heavy rubber gloves, also called utility gloves, should preferably be used for cleaning instruments and environmental surfaces. Dentists should be aware that allergic reactions to latex gloves or the cornstarch powder in gloves have been reported in health care workers and patients. [22-23] To reduce the possibility of such reactions, nylon glove liners for use under latex, rubber or plastic gloves are available. Polyethylene gloves, also known as food-handlers' gloves, may be worn over treatment gloves to prevent contamination of objects such as drawer or light handles or charts.

To read more…http://www.ada.org/prof/prac/issues/topics/icontrol/ic-recs/index.html
   
  Newest Release of Hand Hygiene Guidelines from CDC
The use of gloves does not eliminate the need for hand hygiene. Likewise, the use of hand hygiene does not eliminate the need for gloves. Gloves reduce hand contamination by 70 percent to 80 percent, prevent cross-contamination and protect patients and health care personnel from infection. Alcohol-based handrubs should be used before and after each patient just as gloves should be changed before and after each patient.

To read more… http://www.cdc.gov/od/oc/media/pressrel/fs021025.htm
   
  More links and topics about infection control can be found in http://www.cdc.gov/OralHealth/infection_control/index.htm