Efficacy of ProTaper Universal Rotary Retreatment System for Gutta-percha Removal from Oval Root Canals: A Micro–Computed Tomography Study

2012 ◽  
Vol 38 (11) ◽  
pp. 1516-1520 ◽  
Author(s):  
Jingzhi Ma ◽  
Ahmed Jawad Al-Ashaw ◽  
Ya Shen ◽  
Yuan Gao ◽  
Yan Yang ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Micro Computed Tomography ◽  
Root Canals ◽  
Gutta Percha

Efficacy of different solvents in removing gutta-percha from curved root canals: A micro-computed tomography study

2013 ◽  
Vol 40 (2) ◽  
pp. 76-80 ◽  
Author(s):  
Baran Can Sağlam ◽  
Mustafa Murat Koçak ◽  
Sevinç Aktemur Türker ◽  
Sibel Koçak
Keyword(s):  
Computed Tomography ◽  
Micro Computed Tomography ◽  
Root Canals ◽  
Gutta Percha ◽  
Curved Root Canals

scholarly journals Adaptation of the single-cone in prepared long oval-shaped canals: a micro-computed tomography study

2021 ◽  
Vol 10 (15) ◽  
pp. e444101523301
Author(s):  
Christianne Velozo ◽  
Hugo Dantas ◽  
Basílio Rodrigues Vieira ◽  
Frederico Barbosa de Sousa ◽  
Victor Felipe Farias do Prado ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Root Canal ◽  
Micro Ct ◽  
Micro Computed Tomography ◽  
Mean Values ◽  
Root Canals ◽  
Gutta Percha ◽  
Working Length ◽  
Single Cone ◽  
Student’S T

The present study aimed to evaluate adaptation of the single gutta-percha cone on root canal walls prepared with the two systems, the XP-endo Shaper (XPS; FKG Dentaire, La Chaux-de-Fonds, Switzerland) and ProTaper Next systems (PTN; Dentsply Sirona, Ballaigues, Switzerland) by using micro-computed tomography (micro-CT) technology. Twenty long oval-shaped canals in mandibular incisors were scanned by micro-CT (Skyscan 1172; Bruker microCT, Kontich, Belgium). Two groups were divided into (n = 10) according to the canal preparation protocol: XPS group with an extra 45 s of instrumentation and PTN group. A gutta percha cone, with respect to the protocol used for each group (size 40, .04 taper, XPS and size 40, .06 taper, PTN) was adapted to the canal at the working length of all the samples, and all root canals were filled, using the single-cone technique. The mean values for volume of voids and percentage relative to the mentioned space were correspondingly higher in XPS group than they were PTN group, mean values for volume of voids (3.61 mm3 - 1.92 mm3) and for percentage of voids (39.25% - 23.28%), respectively, significant differences were recorded (p < 0.05) between the two groups (XPS and PTN, Student’s-t test for homogenous variances and Mann–Whitney test). The canals prepared with XPS, in the procedure performed with an extra 45 s of instrumentation, showed a higher volume of voids than those prepared with the PTN system, in obturation of the root canal with the single cone technique.

scholarly journals Comparison of Two Techniques for Selection of Master Gutta-Percha Cone Using Micro-Computed Tomography

2013 ◽  
Vol 24 (4) ◽  
pp. 367-370 ◽  
Author(s):  
Joao Manoel Silva-Filho ◽  
Aline Evangelista Souza-Gabriel ◽  
Graziela Bianchi Leoni ◽  
Samuel Henrique Camara De-Bem ◽  
Edson Alfredo ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Conventional Technique ◽  
Filling Material ◽  
Micro Ct ◽  
Micro Computed Tomography ◽  
Root Canals ◽  
Gutta Percha ◽  
Working Length ◽  
Significant Difference ◽  
Material Volume

This study used micro-computed tomography (micro-CT) to evaluate the fit of the master gutta-percha cone at time of cone fit, gutta-percha volume in the filling material, and the filling material volume in relation to the canal at the apical limit of the working length. Root canals of 20 maxillary central incisors were prepared with rotary instruments and distributed into two groups (n=10). The gutta-percha cone tip was either plasticized (apical thermal impression technique - ATI) or not (conventional technique - CT), and its apical fit was checked. The apical 1 mm of working length was examined with a micro-CT, canals were filled with gutta-percha and sealer, and new micro-CT scans were obtained. In CT, gutta-percha filled 35.83 ± 15.05% of the canal at cone selection and 38.72 ± 11.64% after filling. In ATI, these values were 23.14 ± 7.74% and 26.98 ± 20.40%, respectively. Gutta-percha volume in the filling material, and filling material volume in relation to the canal were, respectively, 61.28 ± 11.64% and 87.76 ± 9.98% for CT, and 73.00 ± 20.41% and 89.96 ± 9.08% for ATI. No significant difference was found between cone selection and after canal filling, for either CT (p=0.593) or ATI (p=0.4975). The techniques did not differ significantly with respect to gutta-percha volume in the filling material (p=0.132) and filling material volume in relation to the canal (p=0.612). An ideal fit of the master gutta-percha cone at working length was not achieved regardless of the cone selection technique, and the material-filled area was similar for both techniques.

scholarly journals Effect of Sonic Agitation of a Binary Mixture of Solvents on Filling Remnants Removal as an Alternative to Apical Enlargement—A Micro-CT Study

2020 ◽  
Vol 9 (8) ◽  
pp. 2465
Author(s):  
Inês Ferreira ◽  
Pedro S. Babo ◽  
Ana Cristina Braga ◽  
Manuela E. Gomes ◽  
Irene Pina-Vaz
Keyword(s):  
Binary Mixture ◽  
Methyl Ethyl Ketone ◽  
Solvent Mixture ◽  
Methyl Ethyl ◽  
Micro Computed Tomography ◽  
Significance Level ◽  
Root Canals ◽  
Gutta Percha ◽  
Ah Plus ◽  
Mandibular Incisors

Background: This work aimed to evaluate the efficacy of sonic agitation of a binary mixture of solvents (methyl ethyl ketone/tetrachloroethylene) on filling remnants removal and compare the effects of solvent agitation with the enlargement to the next instrument size. Methods: Twenty-four mandibular incisors were prepared with ProTaper Next (X1, X2) and obturated with the single-cone technique and AH Plus sealer. The teeth were retreated with ProTaper Universal Retreatment and ProTaper Next and divided into two groups (n = 12) according to the final instrument (X3 or X4). All canals were submitted to a supplementary procedure consisting of a mixture of solvents―methyl ethyl ketone/tetrachloroethylene, agitated with EndoActivator. The volume of filling remnants was assessed through micro-computed tomography in the apical 5 mm. Statistical analysis was performed with a significance level of 5%. Results: The supplementary procedure of agitation of the solvent mixture was beneficial in both groups (p < 0.05). There were no statistically significant differences between canals re-prepared until X4 and canals re-prepared until X3 plus solvent (p > 0.05). Conclusions: An additional step with a two-solvent solution potentiated by EndoActivator showed to be very effective for the removal of gutta-percha and resinous sealer remnants from apical root canals of mandibular incisors, avoiding further enlargement.

scholarly journals Micro-Computed Tomography (Micro-CT) Evaluation of Effects of Different Rotary Glide Path Techniques on Canal Transportation and Centering in Curved Root Canals

2019 ◽  
Vol 25 ◽  
pp. 6351-6358
Author(s):  
Gabrielė Česaitienė ◽  
Tadas Venskutonis ◽  
Vita Mačiulskienė ◽  
Vaidotas Cicėnas ◽  
Vykintas Samaitis ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Micro Ct ◽  
Micro Computed Tomography ◽  
Root Canals ◽  
Glide Path ◽  
Ct Evaluation ◽  
Canal Transportation ◽  
Curved Root Canals

scholarly journals Comparison of Obturation Removal Efficiency from Straight Root Canals with ProTaper Gold or Reciproc Blue: A Micro-Computed Tomography Study

2020 ◽  
Vol 9 (4) ◽  
pp. 1164 ◽  
Author(s):  
Vicente Faus-Matoses ◽  
Cristina Pasarín-Linares ◽  
Ignacio Faus-Matoses ◽  
Federico Foschi ◽  
Salvatore Sauro ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Removal Efficiency ◽  
Continuous Wave ◽  
Descriptive Analysis ◽  
Nonparametric Tests ◽  
Micro Computed Tomography ◽  
Human Teeth ◽  
Root Canals ◽  
Before And After ◽  
The Mean

Background: The objective was to evaluate the efficiency of ProTaper Gold (PTG) and Reciproc Blue (RB) NiTi files in obturation material removal from straight root canals assessed by micro-computed tomography. Methods: Fifty-two anterior human teeth were shaped with a PTG rotary system until F2 (25/.08). Specimens were obturated with a continuous wave of condensation technique. For retreatment, specimens were randomly distributed in two experimental groups: PTG group (F4 file) and RB (R40 file). Micro-CT scans were performed before and after retreatment procedures. The percentage of the remaining obturation material compared to the original volume was calculated, as well as the retreatment time. The presence of separated files was recorded. A descriptive analysis was carried out, and nonparametric tests were employed. Results: The mean percentages of remaining obturation material in the PTG group and the RB group were 4.14 ± 4.30% and 4.18 ± 4.29%, respectively. The mean retreatment times for the PTG and RB groups were 144 ± 51 and 163 ± 88 s, respectively. There were no statistically significant differences, neither in removal efficiency (p > 0.05) nor in retreatment time (p > 0.05), between the two groups. The coronal and middle thirds presented significantly more remaining obturation material than the apical third (p < 0.05). No file separation occurred. Conclusions: ProTaper Gold and Reciproc Blue present with comparable efficiency in removing the obturation material, with a similar mean retreatment time.

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