![]() ![]() Self-contained vials have a glass ampule of sterile media, which is encased in a plastic vial with a spore strip inside. The most commonly used forms of BIs in dentistry are spore strips, and self-contained spore vials. While all three types of monitoring are important to the quality assurance process, biological monitoring is considered the gold standard for sterility assurance. Since they are more resistant and are usually present in greater numbers than are the common microbial contaminants found on instruments, destruction of these organisms will indicate destruction of other potential pathogens. In comparison to Chemical Indicators, Biological indicators (BIs) commonly use highly resistant spores (i.e., spore test) to challenge the sterilization process.
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