Microcomputed Tomographic Assessment of the Single Cone Root Canal Fillings Performed by Undergraduate Student, Postgraduate Student and Specialist Endodontist

Drukteinis, Saulius; Bilvinaite, Goda; Tušas, Paulius; Pečiulienė, Vytautė

doi:10.3390/jcm10051080

Cited by 6 publications

(4 citation statements)

References 51 publications

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“…Therefore, micro-CT analysis was used in the present study to quantify and qualify the pores within the apical plugs. The isotropic resolution was set at 9.9 µm, as it has been shown that a voxel size of 11.2 μm or less is a reliable cutoff value to assess the filling porosity [ 36 , 40 ], even though there is always a risk of tiny pores left undetected due to a high radiopacity of the material used [ 18 ].…”

Section: Discussionmentioning

confidence: 99%

“…Moreover, this material has the desirable dimensional stability and low solubility and provides high clinical success rates when used in conjunction with a single gutta-percha cone (SC) obturation technique [ 15 , 16 , 17 ]. In contrast to cold lateral compaction or various thermoplastic methods, the BioRoot RCS/single gutta-percha cone (BR/SC) obturation technique is clinically appealing due to its simplicity, as no superior clinical skills or any additional armamentarium and devices are needed [ 18 ]. However, the available data on the performance of the BR/SC technique used for an apical plug in apically perforated roots are still limited.…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Ultrasonic Agitation on the Porosity Distribution in Apically Perforated Root Canals Filled with Different Bioceramic Materials and Techniques: A Micro-CT Assessment

Drukteinis

Bilvinaite

Tušas

et al. 2021

JCM

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The present study evaluated the effect of ultrasonic agitation on the porosity distribution of BioRoot RCS/single gutta-percha cone (BR/SC) and MTA Flow (MF) root canals fillings used as apical plugs in moderately curved and apically perforated roots. Eighty mesial root canals of mandibular first molars were enlarged up to ProTaper NEXT X5 rotary instrument 2 mm beyond the apical foramen, simulating apical perforations. Specimens were randomly divided into four experimental groups (20 canals per group) according to the material and technique used for root canal obturation: BR/SC, BR/SC with ultrasonic agitation (BR/SC-UA), MF and MF with ultrasonic agitation (MF-UA). The ultrasonic tip was passively inserted into the root canal after the injection of flowable cement and activated for 10 s. The specimens were scanned before and after obturation with a high-resolution micro-computed tomography scanner, and the porosity of the apical plugs was assessed. The differences between groups were analyzed using the Kruskal-Wallis and Mann-Whitney tests, with the significance level set at 5%. None of the obturation materials and techniques used in this study was able to provide a pore-free root canal filling in the apical 5 mm. Considerably higher percentages of open and closed pores were observed in the MF and MF-UA groups, with the highest porosity being in the MF-UA group (p < 0.05). No significant differences were observed between the BR/SC and BR/SC-UA groups, where the quantity of open and closed pores remained similar (p > 0.05).

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Effect of Ultrasonic Agitation on the Porosity Distribution in Apically Perforated Root Canals Filled with Different Bioceramic Materials and Techniques: A Micro-CT Assessment

Drukteinis

Bilvinaite

Tušas

et al. 2021

JCM

Self Cite

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“…Micro-CT is a non-destructive tool that comprehensively investigates 3D details of the scanned objects [ 34 ]. Micro-CT investigations are used in this study to determine the internal and marginal adaptation of the CO and CR veneers by measuring the thickness/width of the luting cement localized at the adhesive interface.…”

Section: Methodsmentioning

confidence: 99%

Micro-CT and Microscopy Study of Internal and Marginal Gap to Tooth Surface of Crenelated versus Conventional Dental Indirect Veneers

et al. 2021

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1. Background and Objectives: Ceramic veneers represent the most appropriate treatment option for minimally invasive aesthetic rehabilitation. For long-term clinical success, the accurate marginal and internal adaptation of dental restorations are of paramount importance. The aim of this in vitro study is to assess the effect of a novel (patented) design of veneers compared to conventional ones on their marginal and internal gap to the prepared tooth surface. 2. Materials and Methods: Twenty-four lithium disilicate ceramic veneers are obtained using Computer-Aided-Design (CAD) and then milled using Computer-Aided-Manufacturing (CAM). The samples are divided into two groups: 12 conventional (CO) veneers (i.e., with a linear marginal contour) and 12 crenelated (CR) veneers, the latter with the novel sinusoidal marginal design. All samples are bonded to frontal teeth, and the adhesive interfaces are analyzed using two methods, optical microscopy and micro-Computed Tomography (CT): the former for the accuracy of the marginal gap and the latter for the internal gap (as well as for the homogeneity of the luting cement) of ceramic veneers. 3. Results: STATA and one-way ANOVA tests reveal significant differences between CO and CR veneers: (i) the marginal gap is smaller for CR (64 μm) than for CO veneers (236 μm); (ii) the internal adaptation is better for CR veneers: for a cement width of up to 120 μm, the covered surface for the CR group is 81.5%, while for the CO group it is 64.5%; (iii) the mean of the porosities within the cement is not significantly different (3.4 × 106 μm3 for CO and 3.9 × 106 μm3 for CR veneers), with a higher standard deviation for the CO group. Analytical modeling is achieved for internal gaps using the micro-CT results. The characteristic functions obtained allow us to compare the volume of luting cement for the two types of veneers. 4. Conclusion: The novel veneers design produces an improvement in the marginal and internal adaptation of the restorations to the prepared tooth surface. Thus, it provides favorable premises for better clinical performances.

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“…Therefore, the material's porosity can be representative of objective criteria to assess root canal obturation quality. (1) Hermetic canal filling and coronal restoration guarantee treatment longevity. The utmost complex apical zone is the bacteria and bacterial toxins path of entry.…”

Section: Introductionmentioning

confidence: 99%

Sealing Ability of Single Cone Obturation Technique Using Ultrasonic Activation of Bioceramic Sealer: An In Vitro Study

El-Mal

2023

Ahram Canadian Dental Journal

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The present study aimed to evaluate the filling quality of a bioceramic sealer with a single gutta-percha cone technique using ultrasonic sealer activation. Twenty-four single-rooted mandibular premolars were selected. Canals were instrumented and allocated into three groups randomly according to the method of ultrasonic sealer activation: group 1: single-cone with ultrasonic activation, group 2: single-cone with Vibration Thermo-hydrodynamic obturation (Vibra THO) technique, group 3: single-cone without ultrasonic activation. After setting of sealer, teeth were immersed in methylene blue dye then demineralized and cleared. Microleakage was assessed under stereomicroscope at 20x magnification.ANOVA and Bonferroni post hoc tests were used for the evaluation of dye penetration at the apical three mm of the roots. Single-cone without ultrasonic activation had the highest mean value of apical microleakage (4080.2±1132.1 μm) followed by the Vibra THO technique (2033.3±1754.3 μm) and the least results with single-cone with ultrasonic activation (1389.1±1094.8 μm) with statistically significant difference between the groups (P<0.05). In multiple comparisons, only statistical significant difference was found between single-cone without ultrasonic vibration and single-cone with ultrasonic activation. It was concluded that when using premixed bioceramic sealer with SC, ultrasonic activation is recommended to obtain better sealing ability of the canals.

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Microcomputed Tomographic Assessment of the Single Cone Root Canal Fillings Performed by Undergraduate Student, Postgraduate Student and Specialist Endodontist

Cited by 6 publications

References 51 publications

The Effect of Ultrasonic Agitation on the Porosity Distribution in Apically Perforated Root Canals Filled with Different Bioceramic Materials and Techniques: A Micro-CT Assessment

The Effect of Ultrasonic Agitation on the Porosity Distribution in Apically Perforated Root Canals Filled with Different Bioceramic Materials and Techniques: A Micro-CT Assessment

Micro-CT and Microscopy Study of Internal and Marginal Gap to Tooth Surface of Crenelated versus Conventional Dental Indirect Veneers

Sealing Ability of Single Cone Obturation Technique Using Ultrasonic Activation of Bioceramic Sealer: An In Vitro Study

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