AI Article Synopsis
- The study aimed to assess how effective cotton and PTFE tape are as spacer materials in preventing bacterial contamination in restored human molars.
- Twenty-six extracted molars were tested by using either cotton or PTFE as spacers and then incubated with bacteria for seven days before testing for contamination.
- Results showed that the majority of the cotton spacers led to bacterial growth and contamination in the access cavities, while PTFE tape did not cause any leakage or contamination.
Article Abstract
Objective: To microbiologically evaluate the efficacy of cotton and polytetrafluoroethylene (PTFE) tape used as spacer materials.
Method And Materials: Twenty-six extracted human molars were restored using either cotton or PTFE tape as spacers under a standardized provisional restorative material (Cavit). The teeth were incubated for 7 days in a culture of Streptococcus gordonii or in liquid media alone. The spacers were removed and tested for bacterial contamination. The access cavities were also evaluated for bacterial contamination.
Results: Nine of 10 teeth with cotton spacers and one of 10 teeth with PTFE spacers were positive for S gordonii growth. The nine teeth in the cotton group also showed contamination of the access cavities.
Conclusion: Even under optimal conditions, cotton spacers may cause leakage into the access cavities. Cotton fibers may serve as a route for bacterial contamination of the access cavities and root canal space. In contrast, PTFE tape did not provide an avenue for bacterial contamination.
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