human 6 Humans 5 orthodontics 4 premolar tooth 3 Air Abrasion, Dental 2 Bicuspid 2 Ceramics 2 In Vitro Techniques 2 Microscopy, Electron, Scanning 2 Orthodontics 2 Surface Properties 2 article 2 ceramics 2 chemistry 2 comparative study 2 dental surgery 2 female 2 in vitro study 2 male 2 meta analysis (topic) 2 procedures 2 scanning electron microscopy 2 surface property 2 Air-abrasion 1 Article 1 Bioactive glass 1 Bioglass 1 Cochrane 1 Cochrane Library 1 Controlled Clinical Trials as Topic 1