Shaping ability of XP‐endo Shaper and ProTaper Next in long oval‐shaped canals: a micro‐computed tomography study

Abstract

Aim To evaluate the shaping ability of the single‐file XP‐endo Shaper system (XP‐S; FKG Dentaire, La Chaux‐de‐Fonds, Switzerland) employing a different working time and of the multiple‐file ProTaper Next system (Dentsply Sirona, Ballaigues, Switzerland) using micro‐computed tomography (micro‐CT) technology. Methodology Twenty long oval‐shaped canals in mandibular incisors were matched anatomically and scanned by micro‐CT (Skyscan 1172; Bruker micro‐CT, Kontich, Belgium). The canals were divided into two groups (n = 10) according to the canal preparation protocol: XP‐endo Shaper (XP‐S) with an extra 45 s of instrumentation and ProTaper Next (PTN X4). The images recorded before and after preparation were evaluated for morphometric measures of volume, surface area, structure model index and untouched walls. The data were compared statistically (Student's t‐test for homogenous variances and Mann–Whitney test) between the two groups (XP‐S and PTN X4) at α = 5%. Results Root canal preparation significantly increased all parameters (volume, surface area, structure model index and untouched walls) tested in each group (P < 0.05). There was no significant difference (P > 0.05) in the percentage increase of volume (107.50%–93.13%), surface area (27.74%–29.68%) or untouched canal wall (13.08%–11.74%) between XP‐S and PTN X4, respectively. Conclusions The XP‐endo Shaper system (single‐file) with an extra 45 s of instrumentation and the ProTaper Next system (multiple files) had a similar root canal shaping ability. Neither technique was able to fully prepare the long oval‐shaped canals of mandibular incisors.

Análise morfométrica de incisivos inferiores através de microtomografia computadorizada

“…Ao preparar os canais classificados como ovais, ovais longos ou achatados, o operador deve se alertar para uma instrumentação mais crítica, reduzindo as possibilidades de preparo incompleto do canal radicular principal. Velozo, et al, (2020) em seu estudo em canais ovais longos de incisivos mandibulares com instrumentos de eixo de rotação descentralizado, Xp-endo Shaper (FKG Dentaire) e ProTaper Next (Dentsply), concluiu que nenhuma técnica foi capaz de preparar completamente, ou seja, nenhuma técnica conseguiu tocar em todas as paredes. A grande variação na porcentagem de paredes intocadas observadas em estudos de micro-CT parece estar relacionado a diferenças na morfologia dentária, características dos instrumentos usados e diferenças metodológicas (Souza-Neto, et al, 2018).…”

Effect of XP‐endo Shaper versus conventional rotary files on postoperative pain and bacterial reduction in oval canals with necrotic pulps: a randomized clinical study

“…2019, Velozo et al . 2020). After each 5 strokes, the canal was irrigated using 3 mL of 2.5% sodium hypochlorite and EDTA gel (MD‐Chelcream; Metabiomed Co. Ltd, Chungcheongbuk‐do, Korea) was used as a lubricant.…”

“…2018, Velozo et al . 2020). On the other hand, the use of conventional rotary files has been associated with apical extrusion of contaminated debris (Ahn et al .…”

Eficácia do sistema WaveOne Gold no preparo de canais longo ovais com instrumentos únicos e em modo sequencial

“…Para o cálculo amostral dados de estudos prévios foram utilizados como referência (De-Deus et al, 2019;Velozo et al, 2020) e realização do cálculo do poder observado na amostra, sendo considerado o α = 5%, o que resultou em um valor de 99%.…”