Journal of Research in Dental and Maxillofacial Sciences

en Effect of a Hemostatic Agent on Bond Strength and Durability of Bonding in Three Different Adhesive Systems Restorative Dentistry Restorative Dentistry Original article Original article <div style="text-align: justify;">Background and Aim: Hemostatic agents may affect the hybrid layer quality. This study evaluated the effect of a hemostatic agent on microtensile bond strength (μTBS) and bonding durability in three adhesive systems.    Materials and Methods: In this in vitro study, 120 extracted human molars were randomly divided into two main groups (n=60) based on aging conditions: (I) 24-hour storage in distilled water and (II) thermocycling (10,000 cycles, 5°C-55°C). Each group was further subdivided into 6 subgroups (n=10) according to the use of Viscostat Clear and the adhesive system: Adper Single Bond, Clearfil SE Bond, and All-Bond Universal. Composite resin (Filtek Z250) was applied, and μTBS was measured with a testing machine. Failure modes were observed under an optical microscope, and resin-dentin interface was examined by scanning electron microscopy (SEM). Data were analyzed using three-way fixed-effects ANOVA and Tukey’s post-hoc test (α=0.05).    Results: The highest μTBS was found in the Adper Single Bond group without hemostatic agent after 24 hours of storage (17.37±5.43 MPa), and the lowest was in the All-Bond Universal group with hemostatic agent after thermocycling (5.44±1.21 MPa). At 24 hours, no significant difference existed between contaminated and uncontaminated groups (P>0.05). After thermocycling, Adper Single Bond showed a significant reduction in bond strength when exposed to Viscostat Clear (P=0.000). Adhesive failure predominated in all groups. Conclusion: The adhesive type and aging process significantly affected the μTBS. While Viscostat Clear did not significantly affect the 24-hour μTBS, it reduced bonding durability after thermocycling in Adper Single Bond group.  </div> Dental Bonding, Tensile Strength, Hemostatic 164 173 http://jrdms.dentaliau.ac.ir/browse.php?a_code=A-10-2641-2&slc_lang=en&sid=1 Saeedeh Ebrahimgol s.ebrahimgol@iau.ir 100319475328460016938 100319475328460016938 No Department of Operative Dentistry, Faculty of Dentistry, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran Saeed Nemati Anaraki saeid.nemati@iau.ac.ir 100319475328460016939 100319475328460016939 No Department of Operative Dentistry, Faculty of Dentistry, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran Mahsa Ghanaat mahsa.ghanaat@iau.ir 100319475328460016940 100319475328460016940 No Department of Operative Dentistry, Faculty of Dentistry, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran Emad Ramouz emad.ramouz@iau.ir 100319475328460016941 100319475328460016941 No Department of Operative Dentistry, Faculty of Dentistry, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran Maryam Hoorizad ganjkar mahoorizad@yahoo.com 100319475328460016942 100319475328460016942 Yes Department of Operative Dentistry, Faculty of Dentistry, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran