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Original Research

Open Access

Effect of Calcium Hydroxide as a Root Canal Dressing Material on Dentin Fracture Strength In Primary Teeth–In Vitro Study

  • Fadi Said1
  • Moti Moskovitz1,*,

1Department of Pediatric Dentistry, Hebrew University, Hadassah School of Dental Medicine, Jerusalem, Israel

DOI: 10.17796/1053-4628-42.2.11 Vol.42,Issue 2,March 2018 pp.146-149

Published: 01 March 2018

*Corresponding Author(s): Moti Moskovitz E-mail:


Objectives: The aim of the present study was to assess the effect of calcium hydroxide as a root canal dressing material on dentin microtensile fracture strength in human primary teeth in vitro. Study design: Thirty primary anterior teeth with root canals packed with calcium hydroxide were divided into groups of ten and immersed in saline at room temperature for 7, 30 and 90 days. Ten teeth with root canals filled with sterile saline were the control group. Microtensile fracture strength was measured in Mechanical tester Lloyd testing machine. Results: There was a significant difference (P < 0.05) between the fracture strength of the calcium hydroxide-filled teeth after 90 days (19.1 MPa) compared with the control (35.8 MPa). Dentin microtensile fracture strength of the calcium hydroxide-filled teeth decreased at an average of 0.142 MPa per day. Conclusion: Calcium hydroxide placed in root canals for an extended time had a significantly negative effect on root strength. Long-term success of root canal treatment in primary anterior teeth is estimated as 65% with most of the failures result from trauma recurrence.

Clinical Relevance: Our results stress the need to evaluate the pros and cons of root canal treatment compared to extractions of non-vital primary incisors.


calcium hydroxide, root canal treatment, dentin fracture strength, primary teeth

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Fadi Said,Moti Moskovitz. Effect of Calcium Hydroxide as a Root Canal Dressing Material on Dentin Fracture Strength In Primary Teeth–In Vitro Study. Journal of Clinical Pediatric Dentistry. 2018. 42(2);146-149.


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