This high-yield revision note on Sterilization & Disinfection in Dental Clinic: CDC Guidelines covers everything examiners typically test under Dental Materials — structured as quick-reference tables, clinical correlations, mnemonics and previous-year-style high-yield points. It's built for last-mile revision before NEET MDS, INI-CET MDS and INBDE, so you can scan it in minutes instead of re-reading a whole textbook chapter.
| Method | Mechanism/Parameters | Use |
|---|---|---|
| Autoclave (moist heat) | 121°C at 15psi for 15-20min, OR 134°C for 3-5min | Gold standard, kills spores, used for most heat-tolerant instruments |
| Dry heat oven | 160°C for 2hrs, OR 170°C for 1hr | Heat-tolerant but moisture-sensitive items (e.g. some glassware/powders) |
| Chemical (glutaraldehyde 2%) | Protein denaturation | Heat-sensitive items; 10hrs immersion for sterilization, 20-30min for high-level disinfection |
| Ethylene oxide gas | Alkylation of proteins/DNA | Heat/moisture-sensitive plastics; requires an aeration period to remove toxic residue |
| Spaulding Classification | Risk Level | Required Processing | Example |
|---|---|---|---|
| Critical items | Penetrate soft tissue/bone | Must be sterilized | Forceps, scalers, surgical burs, elevators |
| Semi-critical items | Contact mucous membranes, non-intact skin | High-level disinfection (sterilization preferred) | Mouth mirrors, impression trays, amalgam condensers |
| Non-critical items | Contact intact skin only | Low/intermediate-level disinfection | BP cuff, dental chair, light handles |
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