Toqeer Ahmed Iqbal, Shadab Ahmed Butt, Shabnam Hamid.
Keratinization of Sulcular Epithelium in Low Frequency Noise Exposed Mice.
J Pak Dent Assoc Jan ;22(4):229-33.

Objective: The study was conducted to evaluate the histomorphological effects of low frequency noise on the periodontium of mice. Methodology: Thirty BALBc mice, both male and female, were selected and divided into three equal groups having equal number of male and female animals. Control group A was exposed to normal environment of animal house, experimental group B was kept in silent condition and experimental group C was exposed to low frequency noise of 200 Hz for three months. The results of the experimental groups were compared with the control, and with each other. Statistical analysis was done using chisquare test at a confidence level of 95 percent and p value of <0.05 was considered as statistically significant. Results: Presence of keratinization of sulcular epithelium was statistically significant when group A was compared with group B and group B was compared with group C. Although there was no statistically significant difference in mean thickness of sulcular epithelium among the three groups but it was comparatively less in group C. Conclusion: It was concluded that low frequency noise significantly increases the keratinization of sulcular epithelium.

PakMediNet -Pakistan's largest Database of Pakistani Medical Journals - http://www.pakmedinet.com