A Micro–Computed Tomography Evaluation of Mineral Trioxide Aggregate Root Canal Fillings

El-Ma'aita, Ahmad; Qualtrough, A. J. E.; Watts, David C.

doi:10.1016/j.joen.2012.01.009

Cited by 48 publications

(62 citation statements)

References 20 publications

(27 reference statements)

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“…However, none of the tested techniques provided a void-free or gap-free root canal filling. This result is consistent with previous reports (21)(22)(23)(24)26). No significant difference was found between the CLC and TT filling techniques instrumented with the SAF or Revo-S file systems.…”

Section: Discussionsupporting

confidence: 93%

“…Micro-CT has been used to evaluate root canal anatomy and canal shapes after instrumentation (4,9,10,20). It has also been used to analyze void and gap formation in retreatment studies and root canal fillings, canal sealers, and filling techniques (21)(22)(23)(24)(25). Micro-CT imaging is a fast, highly accurate, and nondestructive method for in vitro evaluation of materials (19,21).…”

Section: Discussionmentioning

confidence: 99%

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3D Micro-CT Analysis of Void and Gap Formation in Curved Root Canals

Şımşek¹,

Keleş²,

Ahmetoğlu³

et al. 2017

Eur Endod J

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Objective: This study used microcomputed tomography (micro-CT) to compare the volumes of voids and gaps in curved root canals instrumented and filled using various techniques. Methods: Twenty extracted mandibular first molars with two curved mesial root canals were used. Root canals were instrumented using a self-adjusting file (SAF) or Revo-S file system. For standardization, mesiobuccal canals were instrumented with SAF and mesiolingual canals were instrumented with Revo-S in each root. The canals were divided into four experimental groups (n=10 in each). The canals were then filled via cold lateral compaction (CLC) or a thermoplasticized injectable technique (TT) using gutta-percha and AH Plus root canal sealer. The roots were scanned with a micro-CT, and the volumes of the voids and gaps were calculated using three-dimensional (3D) micro-CT images. Data were analyzed using unpaired t-and Kruskal-Wallis tests. A value of P < 0.05 was considered significant. Results: None of the tested techniques provided void-or gap-free fillings. Nevertheless, the SAF showed more gap formation than the Revo-S, and TT showed higher gap formation in all experimental groups. These differences, however, were not statistically significant (p>0.05). Conclusion:The SAF and Revo-S rotary file systems yielded comparable results. No statistically significant difference was found between the results of the various instrumentation and filling techniques.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 99%

3D Micro-CT Analysis of Void and Gap Formation in Curved Root Canals

Şımşek¹,

Keleş²,

Ahmetoğlu³

et al. 2017

Eur Endod J

View full text Add to dashboard Cite

show abstract

“…Some studies have evaluated the effect of condensation technique on the bond strength of MTA to root dentin. 19,33 Manual condensation has been found to produce significantly denser root fillings, 22 resulting in better adaptation to the tube walls and fewer voids in comparison with the ultrasonic method. 33 In the present study, manual condensation of MTA was performed in all groups.…”

Section: Discussionmentioning

confidence: 99%

“…19,33 Manual condensation has been found to produce significantly denser root fillings, 22 resulting in better adaptation to the tube walls and fewer voids in comparison with the ultrasonic method. 33 In the present study, manual condensation of MTA was performed in all groups. However, irrigation of the root canal with NaOCl is another factor that has been found to affect bond strength, providing significantly greater push-out strength with MTA than with chlorhexidine gluconate.…”

Section: Discussionmentioning

confidence: 99%

Effect of irrigation technique for removal of triple antibiotic paste on bond strength of MTA to root dentin

et al. 2016

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This study evaluated the bond strength of mineral trioxide aggregate (MTA) to root canal dentin after the performance of various irrigation procedures to remove triple antibiotic paste (TAP). A total of 56 single-rooted human mandibular premolars were instrumented using a rotary system to size 40 and divided randomly into a control group (no intracanal dressing) and three experimental groups (TAP application for 28 days). TAP was then removed by rinsing with 10 mL 2.5% NaOCl using three irrigation systems (Vibringe sonic irrigation, CanalBrush, and syringe irrigation). The coronal and middle parts of root canals were then obturated with MTA. After storage for 1 week, each specimen was embedded in an acrylic block and sectioned horizontally (2-mm-thick slices) at two levels (coronal and middle). Bond strength of MTA to root canal dentin was assessed in 28 samples per group via push-out test using a universal testing machine. Data from the four groups were compared using one-way analysis of variance. Tukey's test was used for multiple comparisons. Push-out bond strength values were significantly higher in the control and Vibringe groups than in the CanalBrush and syringe irrigation groups (p < 0.001). TAP removal from root canals with the Vibringe irrigation system may increase the push-out bond strength of MTA compared with the use of the CanalBrush or syringe irrigation.

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“…In a previous study 22) , the filling quality in apical canals was found to be significantly worse than that of coronal canals, regardless of the filling material. Thus, had we analyzed the full length of the canals, our results might have indicated a good filling quality, particularly in the MTA groups, and it might have shown no significant differences between the MTA and GP groups.…”

Section: Discussionmentioning

confidence: 71%

Comparison of root canal filling quality by mineral trioxide aggregate and gutta percha cones/AH plus sealer

et al. 2016

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The aims of this study were to evaluate the quality of canal filling using mineral trioxide aggregate (MTA) and gutta-percha (GP) in root canals, and to investigate the differences in the percentage of voids between mesial and distal canals by using microcomputed tomography. Twenty-two extracted human mandibular molars were instrumented using rotary files. Two teeth without canal fillings served as negative controls, and the other teeth were obturated with either ProRoot ® MTA or gutta-percha and AH Plus ® sealer. Obturated teeth were scanned with microcomputed tomography, and the percentage of voids (V %) was calculated. These specimens were also examined under a scanning electron microscope. The MTA group showed a significantly higher V % than the GP groups (p<0.05). The mesial canal groups showed significantly higher V% than did the distal canal groups (p<0.05). In orthograde filling, MTA exhibited significantly lower filling quality than did GP.

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A Micro–Computed Tomography Evaluation of Mineral Trioxide Aggregate Root Canal Fillings

Cited by 48 publications

References 20 publications

3D Micro-CT Analysis of Void and Gap Formation in Curved Root Canals

3D Micro-CT Analysis of Void and Gap Formation in Curved Root Canals

Effect of irrigation technique for removal of triple antibiotic paste on bond strength of MTA to root dentin

Comparison of root canal filling quality by mineral trioxide aggregate and gutta percha cones/AH plus sealer

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