Loma Linda University

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Bonnie Retamozo, DDS, MSD
Chair, Endodontics
School of Dentistry
Assistant Professor, Endodontics
School of Dentistry
Publications    Scholarly Journals--Published
  • Tran KT, Torabinejad M, Shabahang S, Retamozo B. Aprecio RM, Chen JW. Comparison of efficacy of pulverization and sterile paper point techniques for sampling root canals. J Endod. 2013 Aug;39(8):1057-9 ( 8/2013 )
  • Retamozo B, Shabahang S, Johnson N, Aprecio RM, Torabinejad M. Minimum contact time and concentration of sodium hypochlorite required to eliminate Enterococcus faecalis. J Endod 2010;36(3):520-3. ( 7/2010 )
  • Hawkins J J, Torabinejad M, Li Y, & Retamozo B. (2015). Effect of three calcium hydroxide formulations on fracture resistance of dentin over time. Dent Traumatol, , . ( 4/2015 - Present ) Link...
    BACKGROUND: The long-term use of calcium hydroxide has been discouraged throughout the recent decade due to a proposed decrease in fracture resistance of dentin. This weakening has grave implications when used on immature teeth with thin dentinal walls in procedures such as apexogenesis. AIM: The purpose of this study was to identify the effects of three commercial calcium hydroxide formulations (Vitapex, Ultracal XS and Pulpdent) on the fracture resistance of dentin in relation to time. MATERIALS AND METHODS: Two-hundred and forty deciduous lamb incisors were collected, cleaned and shaped, and filled with one of the three calcium hydroxide formulations and one negative saline control. At one, three, and 6 months, these teeth were fractured on an Instron machine to determine fracture resistance. RESULTS: No statistical differences were observed among any of the experimental groups, nor between any of the experimental groups and negative control groups. CONCLUSIONS: Based on our findings, there appears insufficient evidence to support that either Vitapex, Ultracal XS, or Pulpdent will cause a decrease in fracture resistance of dentin within a 6-month period.