human 390 Article 326 controlled study 287 Humans 273 male 230 plant extract 226 nonhuman 220 Extraction 195 female 185 unclassified drug 183 Feature extraction 181 Plant Extracts 146 Male 142 adult 137 chemistry 130 Female 126 article 111 tooth extraction 109 Animals 103 animal experiment 100 animal 90 Tooth Extraction 89 metabolism 85 procedures 85 animal model 81 antioxidant 81 rat 79 plant leaf 78 Deep learning 75 Adult 73