chemistry 189 QD Chemistry 142 human 105 Humans 99 Article 59 procedures 56 controlled study 47 surface property 41 Materials Testing 34 materials testing 34 Surface Properties 29 drug effect 29 in vitro study 29 metabolism 27 Animals 25 animal 25 male 24 scanning electron microscopy 24 In Vitro Techniques 23 Male 23 water 22 Female 20 female 20 plant extract 20 unclassified drug 20 Adsorption 19 Fourier transform infrared spectroscopy 19 Plant Extracts 19 Water 19 Dental Bonding 18