Effect of calcium hydroxide paste dressing on uninstrumented root canal wall

Effect of calcium hydroxide form and placement on root dentine pH

“…1997). Wakabayashi et al . (1995) also showed that hydroxyl ions can diffuse into tubuli in uninstrumented root canals within 4 weeks.…”

The influence of preparation technique and sodium hypochlorite on removal of pulp and predentine from root canals of posterior teeth

“…1975). The prepared root canal is envisaged as containing instrumented and noninstrumented areas (Baumgartner & Cuenin 1992, Wakabayashi et al . The prepared root canal is envisaged as containing instrumented and noninstrumented areas (Baumgartner & Cuenin 1992, Wakabayashi et al .…”

Effectiveness of Carisolv compared with sodium hypochlorite and calcium hydroxide

“…As a consequence, the question that crops up is why Carisolv is more effective than NaOCl alone or Ca(OH) 2 . Wakabayashi et al [15] explained the limitation of Ca(OH) 2 to dissolve soft tissue as follows: The solubility of Ca(OH) 2 powder to water is very low (0.16 g/100 g water at 20 C), and the number of dissociated hydroxyl ions is little, although the mixture of Ca(OH) 2 powder to water exhibits a pH of 12 and higher. As soon as the Ca(OH) 2 dissolves the soft tissues, the hydroxyl ions are consumed during the reaction [15].…”

“…While on the one hand the amino acids in Carisolv decrease the aggressive effect of NaOCl on sound dentin and the inner layer of carious dentin, on the other hand they may enhance the disruption of degenerated collagen in the outer layer of carious dentin [5]. As previously shown, the proteolytic effects of Ca(OH) 2 seem to be too weak to dissolve collagen completely [15].…”