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Related Concept Videos

Methods of Sterilization II: Chemical Methods01:30

Methods of Sterilization II: Chemical Methods

In healthcare, the chemical method of sterilization uses chemical sterilants to treat surgical instruments and medical supplies to help prevent the transmission of infectious pathogens to patients. Due to heat sensitivity, most medical supplies and equipment should not be exposed to high temperatures. These parts include rubber, plastic, glass, and other similar elements.
Using chemical sterilization rather than heat to clean out equipment is recommended. It eradicates and removes all bacteria,...
Cleaning, Sterilization, and Disinfection01:30

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Cleaning, disinfection, and sterilization are the methods that help to break the infection chain and prevent disease.
Cleaning
The cleaning process usually involves using water with detergents or enzymatic cleaner and removing foreign material from objects and surfaces, including organic material such as body fluids or inorganic material like soil. Cleaning is performed before high-level disinfection and sterilization because foreign materials on the cover of the devices interfere with process...
Methods of Sterilization I: Physical Methods01:29

Methods of Sterilization I: Physical Methods

As used in a healthcare facility, sterilization destroys all microorganisms through physical or chemical methods. The physical method includes steam, dry heat, boiling water, and radiation.
Steam sterilization uses non-toxic, low-cost moist heat in the form of saturated steam under pressure, which is fast, microbicidal, and sporicidal, and quickly warms and penetrates fabrics. Autoclaves, or steam sterilizers, expose each item to direct steam contact for a predetermined time at the necessary...

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Effects of Mechanical Methods Used in Peri-implantitis Treatment on Implant Surface Decontamination and Roughness
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Integrity of craniofacial plating systems after multiple sterilization procedures.

Robert Todd Adelson1, Robert J DeFatta, Yadranko Ducic

  • 1Department of Otolaryngology, Division Chief, Facial Plastic and Reconstructive Surgery, University of Florida, Gainesville, FL, USA. robert.adelson@ent.ufl.edu

Journal of Oral and Maxillofacial Surgery : Official Journal of the American Association of Oral and Maxillofacial Surgeons
|April 24, 2007
PubMed
Summary

Repeated autoclaving of titanium implants for craniofacial reconstruction does not significantly affect their integrity. Sterilization cycles did not alter the torque to fracture or fracture resistance of titanium screws and rotating beam specimens.

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Area of Science:

  • Biomaterials Science
  • Orthopedic Surgery
  • Materials Engineering

Background:

  • Titanium alloys are widely used in craniofacial reconstruction due to their biocompatibility and strength.
  • Sterilization is a critical step in ensuring the safety of surgical implants.
  • The effects of repeated sterilization cycles on the mechanical properties of titanium implants require thorough investigation.

Purpose of the Study:

  • To evaluate the impact of multiple autoclave sterilization cycles on the mechanical integrity of titanium plates and screws.
  • To determine if repeated autoclaving affects the torque to fracture and fracture resistance of titanium implants used in craniofacial surgery.

Main Methods:

  • Titanium 6AL-4V (Ti 6/4) screws (n=36) were divided into three groups: control (machined), 10 autoclave cycles, and 50 autoclave cycles.
  • Torque to fracture was measured for each screw group.
  • Rotating beam specimens of Ti 6/4, commercially pure titanium grade 4 (CP4), and commercially pure titanium grade 2 (CP2) were tested after 0, 10, or 50 autoclave cycles.

Main Results:

  • No statistically significant difference was found in the torque to fracture for Ti 6/4 screws subjected to 0, 10, or 50 autoclave cycles.
  • The number of cycles to fracture for rotating beam specimens of Ti 6/4, CP4, and CP2 did not significantly differ based on the number of sterilization cycles.
  • A trend towards decreased strength and increased fracture susceptibility with more autoclave cycles was observed but did not reach statistical significance.

Conclusions:

  • Repeated autoclaving cycles do not significantly compromise the mechanical integrity of titanium plates and screws used in craniofacial reconstruction.
  • The findings suggest that current sterilization protocols are safe for titanium implants in terms of mechanical properties.
  • Further research could explore long-term effects or different sterilization methods.