Abstract

PAULO, Anderson de Oliveira; SILVA, Wilker de Oliveira; DALBELLO, Daiane Navarro Guerra  and  CASTRO-SILVA, Igor Iuco. Weakening of dentin by use of calcium hydroxide as intracanal medication. Rev. Bras. Odontol. [online]. 2013, vol.70, n.2, pp. 182-186. ISSN 1984-3747.

The resistance of the dentin after the use of calcium hydroxide as an intracanal medication was tested in the short and long term. Bodies of proof of pig incisors were subjected to mechanical testing immediately (n = 3/standard) or sealed with temporary cement, without filling/GI or with Ca(OH)2/GII (n = 18 each), immersed in saline for 30, 90, 120, 150 and 180 days and tested for compressive strength. Data in triplicate were analyzed by ANOVA and Tukey-Kramer (p < 0.05). There was less resistence in GI after 90 days and in GII after 30 days (p < 0.001). These results confirm the early weakening of dentin by use of Ca(OH)2.

Keywords : calcium hydroxide; Endodontics; Mechanics.