human 32 Humans 26 female 14 male 13 procedures 12 Article 10 in vitro study 9 In Vitro Techniques 8 adult 8 Female 7 Male 7 controlled study 7 dental procedure 7 Root Canal Filling Materials 6 comparative study 6 root canal filling material 6 Dental Stress Analysis 5 aged 5 article 5 clinical article 5 treatment outcome 5 Dental Bonding 4 Gutta-Percha 4 Incisor 4 Microscopy, Electron, Scanning 4 Root Canal Irrigants 4 Root Canal Preparation 4 Surface Properties 4 TP Chemical technology 4 biomedical and dental materials 4