Endodontic treatment of experimentally induced apical periodontitis in dogs

Abstract

A total of 44 roots with periradicular inflammation, induced by inoculation of Streptococcus faecalis, were treated endodontically. All root canals were prepared with K‐reamers using 0.5% solution of sodium hypochlorite for irrigation. Bacteriological specimens demonstrated growth in all teeth when the root‐canal fillings were made. In all, 22 roots were filled with gutta‐percha, 11 roots with a calcium hydroxide preparation (Cala‐sept®) and 11 roots with Calasept®+ Dionosil®, an iodinized radio‐graphic contrast medium. The addition of Dionosil® improved the possibility of evaluating the placement of the calcium hydroxide paste. Dressings with calcium hydroxide are recommended in the treatment of teeth with apical periodontitis.

Influence of calcium hydroxide intracanal dressings on the prognosis of teeth with endodontically induced periapical lesions

“…Under these premises, the Kaplan–Meier statistic and the Cox's regression analysis were recalculated. The results of these simulations summarized in Table 8 underline that the difference between both treatment modalities remained negligible and proved not to be statistically significant; this confirmed the results of a comparative study on periapical healing in dogs ( Allard et al . 1987 ).…”

Effectiveness of electrochemically activated water as an irrigant in an infected tooth model

“…It has also been shown to survive as a mono-infection in root canals (Moller et al 1981, Fabricius et al 1982 and is capable of eliciting a periapical host response Table 4 The results of the multivariate regression framed to answer the third question: 'which is the best experimental solution (both with and without ultrasound)?' To address this question, confidence intervals were constructed comparing each group with the group which was most effective in reducing the number of bacteria (Allard et al 1987). The difficulty with the infected tooth model is that despite using standard inocula, variability is introduced by tooth anatomy and the individual growth responses within each tooth during the 48-h incubation period.…”

“…Enterococcus faecalis has been implicated in apical periodontitis (Allard et al 1987) as well as root canal treatment failure (Molander et al 1998, Sundqvist et al 1998. It is thought to be amongst the most resistant bacteria associated with root canal infection.…”

Effects of the Association between a Calcium Hydroxide Paste and 0.4% Chlorhexidine on the Development of the Osteogenic Phenotype In Vitro

“…Among several intracanal dressings used for teeth with no pulp vitality and with chronic periapical lesions, calcium hydroxide (Ca(OH) 2 ) has been regarded as the best option, and it has been widely recommended and used because of its proven antibacterial properties (1), periapical tissue healing stimulation (2), biocompatibility (3), antiexudate activity (4), and necrotic tissues dissolution propriety (5). The dissociation of Ca(OH) 2 into calcium and hydroxyl ions is responsible for the alkalinization of the cavity, which is not conducive to bacterial development and proliferation.…”