id	keyword
american_scientific_journal-7171	stress
american_scientific_journal-7171	subjects
american_scientific_journal-7171	study
american_scientific_journal-7171	bruxism
american_scientific_journal-7171	oral
american_scientific_journal-7171	disorders
american_scientific_journal-7171	correlation
american_scientific_journal-7171	pain
american_scientific_journal-7171	levels