International Journal of Clinical Pediatric Dentistry

Register      Login

VOLUME 4 , ISSUE 1 ( January-April, 2011 ) > List of Articles


An in vitro Study of Diffusibility and Degradation of Three Calcium Hydroxide Pastes

Shailendra Gupta

Citation Information : Gupta S. An in vitro Study of Diffusibility and Degradation of Three Calcium Hydroxide Pastes. Int J Clin Pediatr Dent 2011; 4 (1):15-23.

DOI: 10.5005/jp-journals-10005-1075

License: CC BY-NC 4.0

Published Online: 00-00-0000


Aims and objectives: The aim of this in vitro study is to assess the diffusibility and degradation of three calcium hydroxide pastes. Materials and methods: Three pastes were prepared by mixing calcium hydroxide powder with three different vehicles namely water, propylene glycol and CMCP for the investigation. The three pastes were sealed in porcelain caps and immersed in distilled water for the diffusion study. The change in the pH of the surrounding water indicated the rate and degree of diffusion in the degradation study (1 to 7 days, 14th day, 21st day and 30th day). The pastes were exposed to an atmosphere of carbon dioxide in the degradation study to assess the degree to which they can undergo degradation by carbonation. Mordant Black or Solochrome Black indicator was used for the estimation. Results and conclusion: Calcium hydroxide readily diffuses from all the three pastes. Calcium hydroxide diffuses marginally less from a paste made with propylene glycol as compared to CMCP paste. The comparative stability of Ca(OH)2 was studied and the results showed that consistently significant protection is imparted to Ca(OH)2 by CMCP over widely ranging periods.

PDF Share
  1. Wennberg A. Tissue compatibility of calcium JDR IADR 1986;65:855
  2. Calcium hydroxide—root resorption and perio- endo lesions. BDJ 1985;158:325-34
  3. Quantitative chemical study of root canal preparations with calcium hydroxide. Endod Dent Traumatol 1988;4:108-13
  4. In vivo sealing ability of calcium hydroxide root canal sealers. Endod Dent Traumatol 1989;5:23-26
  5. The pH values of pulp capping agents. JDE 1989;13(1):1-5
  6. Calcium hydroxide and apexogenesis. Journal of oral surgery, oral pathology and oral medicine 1988;66:499-501
  7. Comparison of physical properties of commercial. Calcium hydroxide lining cements. JADA 1983;107:612-15. An in vitro Study of Diffusibility and Degradation of Three Calcium Hydroxide Pastes International Journal of Clinical Pediatric Dentistry, January-April 2011;4(1):15-23 23 IJCPD 8. George G Stewart. Calcium hydroxide-induced root healing. JADA 1975;90:793-800
  8. Pulp reactions to calcium hydroxide containing materials. Oral Surgery 1972;33(6):961-65
  9. Solubility and biocompatibility of calcium hydroxide containing root canal sealers. Endon Dent Traumatol 1988;4:152-59
  10. Leakage evaluation—In vitro of two calcium hydroxide and two zinc oxide Eugenol based Seallers. Joe 1987;13(7):336-38
  11. Histopathological considerations of direct, pulp capping agents. JDR 1981; 60(7):1371-79.
PDF Share

© Jaypee Brothers Medical Publishers (P) LTD.