Impact of Triton solution irrigation protocol on root fracture resistance: a comparative in vitro study of different irrigation protocols

To evaluate the effect of an irrigation protocol using Triton solution on the fracture resistance of treated root compared with other common irrigation protocols.

Sixty-four human mandibular premolars with single roots and single canals were decoronated to a length of 15 mm. The samples were prepared using the ProTaper system Universal Rotary System. The roots were randomly divided into four groups (n = 16 per group) according to the irrigation protocol used. In G1: (First experimental group), the canals were irrigated with Triton all-in-one irrigation during preparation and as a final irrigation. In G2: (Second experimental group), the canals were irrigated with 5.25% Sodium Hypochlorite (NaOCl) during preparation and 5.25% NaOCl + 17% Ethylenediaminetetraacetic acid (EDTA) + 2% Chlorhexidine (CHX) as a final irrigation. In G3: (Positive control group), the canals were irrigated with 5.25% NaOCl + distilled water. In G4: (Negative control group), the canals were irrigated with only distilled water. Each sample was tested for fracture on a universal testing machine at a crosshead speed of 1 mm/min. The fracture resistance of each sample was recorded, and the data were statistically analysed using a one-way ANOVA and Chi-square tests. The failure modes were observed and assessed. All data were analysed at a 95% confidence interval (α = 0.05).

The mean fracture resistance values ranged from 297.81 ± 61.39 N in G1 to 364.50 ± 84.38 N in G4, with no observed significant differences among the groups (p = 0.112). Regarding failure patterns, oblique fractures were the most frequently observed type, followed by vertical and comminuted fractures, with no significant differences in their distribution among the groups (p = 0.993).

Roots treated with the Triton solution protocol demonstrated fracture resistance similar to those treated with common irrigation protocols.