Bansal Divyansh, Chhaparwal Yogesh, Pai Keerthilatha M, Kumar Mathangi, Vineetha Ravindranath, Chhaparwal Shubha, Kamath Shobha, Kamath Asha
Department of Oral Medicine and Radiology, Manipal College of Dental Sciences, Manipal, India.
Department of Conservative Dentistry and Endodontics, Manipal College of Dental Sciences, Manipal, India.
J Int Soc Prev Community Dent. 2022 Apr 8;12(2):260-265. doi: 10.4103/jispcd.JISPCD_361_21. eCollection 2022 Mar-Apr.
The objective of this study was to observe the effects of the duration of handheld mobile phone usage on the salivary flow, salivary immunoglobulin A (IgA) level, and salivary markers for oxidative stress.
Eighty-one students were categorized into three groups based on their duration of mobile phone usage after age- and gender-matching. Students were grouped as: mobile phone usage <20 min/day (Group A), mobile phone usage 20-60 min/day (Group B), and mobile phone usage >60 min/day (Group C). Saliva was collected to evaluate salivary flow rate, salivary IgA level, and salivary markers for oxidative stress.
The salivary flow rate showed no statistically significant difference between the three groups ( = 0.180). There was no statistically significant difference in the salivary IgA between the three groups ( = 0.237). There was a statistically significant difference in the malondialdehyde (MDA) level between the three groups ( = 0.042). On pair comparison between the groups, group B and group C had a statistically significant difference ( = 0.019) in the MDA level. There was no statistically significant difference in the salivary thiol level between the three groups ( = 0.237).
The duration of handheld mobile phone usage did not show any significant effects on the salivary flow rate, salivary IgA, and thiol levels. There was an increase in the salivary MDA concentration in subjects using handheld mobile phones for a longer duration, indicating higher oxidative stress in salivary glands exposed to mobile phone radiofrequency electromagnetic waves for a longer duration.
本研究的目的是观察手持移动电话使用时长对唾液流量、唾液免疫球蛋白A(IgA)水平以及氧化应激唾液标志物的影响。
81名学生在进行年龄和性别匹配后,根据其移动电话使用时长分为三组。学生分组如下:移动电话使用时长<20分钟/天(A组),移动电话使用时长20 - 60分钟/天(B组),移动电话使用时长>60分钟/天(C组)。收集唾液以评估唾液流速、唾液IgA水平以及氧化应激唾液标志物。
三组之间的唾液流速无统计学显著差异(P = 0.180)。三组之间的唾液IgA无统计学显著差异(P = 0.237)。三组之间的丙二醛(MDA)水平有统计学显著差异(P = 0.042)。在组间两两比较中,B组和C组的MDA水平有统计学显著差异(P = 0.019)。三组之间的唾液硫醇水平无统计学显著差异(P = 0.237)。
手持移动电话的使用时长对唾液流速、唾液IgA和硫醇水平未显示出任何显著影响。使用手持移动电话时长较长的受试者唾液MDA浓度升高,表明唾液腺在较长时间暴露于移动电话射频电磁波下会产生更高的氧化应激。