Community periodontal index probe, Micrometer, Microwave sterilization,Ball end dimension
Citation Information :
Nagappa K, Jain V, Mali G, Bafiwala D, Kour J. Effect of Microwave Sterilization on Community Periodontal Index of Treatment Needs Probe Ball Dimension: An Analytical Study. Int J Experiment Dent Sci 2018; 7 (1):8-12.
Introduction: The heart of science is measurement. The World Health Organization (WHO) has recommended community periodontal index (CPI) probe to accurately measure the periodontal pocket depth. Repeatedly sterilizing the instrument brings undesirable changes in the material properties, such as alteration in dimensions, and hardness contributing to improper validity. The CPI probe with 0.5 mm ball end is ideal to measure the exact periodontal pocket depth.
Aims and objectives: To assess the changes in the dimension of CPI probe ball end at different cycles of microwave sterilization. To assess and compare the horizontal and vertical dimension of Hu-Friedy PCP11 and GDC PCP11 CPI probes ball end.
Materials and methods: The study was carried at the School of Engineering and Technology, Pune, India. Each community periodontal index of treatment needs (CPITN) probe underwent 100 cycles of microwave sterilization, 1350 W, and 2450 MHz for 16 minutes. After each cycle, the CPI ball dimensions were recorded using manual micrometer and magnifying glass. Unpaired t test was used for statistical analysis.
Results: After 100 cycles of sterilization, circumferential ball dimension of Hu-Friedy measured 0.034 ± 0.02 and GDC measured 0.219 ± 0.028 and the difference was statistically highly significant p < 0.001.
Conclusion: Hu-Friedy CPITN probe exhibited better ball dimensional stability and was more valid. Dimensional stability after sterilization procedures is highly relevant for biosafety.
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