On average what is the sum of the time an individual with bruxism grinds his teeth during one night's sleep?

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Vladimir A. Kulchitsky

Please try to evaluate some articles in the Attachment.

http://stats.stackexchange.com/questions/62953/how-to-test-for-parallelness-of-two-distributions

Nikola Ilankovic

https://www.researchgate.net/publication/6934451_Computerized_occlusal_analysis_in_bruxism

Article Computerized occlusal analysis in bruxism

Sorry, I put another text.

Reynaldo Leite Martins Junior

Thank you very much, Dr. Kulchtsky

Thank you very much Dr. Ilankovic.