scholarly journals Root canal shaping of curved canals by Reciproc Blue system and Pro Taper Gold: A micro-computed tomographic study

2021 ◽  
pp. 0-0
Author(s):  
R. Silva ◽  
M. Alcalde ◽  
M. Horta ◽  
C. Rodrigues ◽  
F. Silveira ◽  
...  
Keyword(s):  
Root Canal ◽  
Computed Tomographic ◽  
Canal Shaping

Root Canal Shaping Effect of Instruments with Offset Mass of Rotation in the Mandibular First Molar: A Micro–computed Tomographic Study

2018 ◽  
Vol 44 (5) ◽  
pp. 822-827 ◽  
Author(s):  
Maung Maung Kyaw Moe ◽  
Jung Hong Ha ◽  
Myoung Uk Jin ◽  
Young Kyung Kim ◽  
Sung Kyo Kim
Keyword(s):  
Root Canal ◽  
Computed Tomographic ◽  
Canal Shaping ◽  
Mandibular First Molar

Observation of the Pulp Chamber of Maxillary First Premolars: A Micro-computed Tomographic Study

2020 ◽  
Vol 16 (3) ◽  
pp. 224-230
Author(s):  
Gozde Serindere ◽  
Ceren Aktuna Belgin ◽  
Kaan Orhan
Keyword(s):  
Root Canal ◽  
Age Groups ◽  
Slice Thickness ◽  
Micro Ct ◽  
Micro Computed Tomography ◽  
Pulp Chamber ◽  
Anatomical Structures ◽  
Computed Tomographic ◽  
The Mean ◽  
Chamber Floor

Background: There are a few studies about the evaluation of maxillary first premolars internal structure with micro-computed tomography (micro-CT). The aim of this study was to assess morphological features of the pulp chamber in maxillary first premolar teeth using micro- CT. Methods: Extracted 15 maxillary first premolar teeth were selected from the patients who were in different age groups. The distance between the pulp orifices, the diameter of the pulp and the width of the pulp chamber floor were measured on the micro-CT images with the slice thickness of 13.6 µm. The number of root canal orifices and the presence of isthmus were evaluated. Results: The mean diameter of orifices was 0.73 mm on the buccal side while it was 0.61 mm on palatinal side. The mean distance between pulp orifices was 2.84 mm. The mean angle between pulp orifices was -21.53°. The mean height of pulp orifices on the buccal side was 4.32 mm while the mean height of pulp orifices on the palatinal side was 3.56 mm. The most observed shape of root canal orifices was flattened ribbon. No isthmus was found in specimens. Conclusion: Minor anatomical structures can be evaluated in more detail with micro-CT. The observation of the pulp cavity was analyzed using micro-CT.

Hand and nickel-titanium root canal instrumentation performed by dental students: a micro-computed tomographic study

2006 ◽  
Vol 10 (1) ◽  
pp. 52-59 ◽  
Author(s):  
M. Peru ◽  
C. Peru ◽  
F. Mannocci ◽  
M. Sherriff ◽  
L. S. Buchanan ◽  
...  
Keyword(s):  
Root Canal ◽  
Dental Students ◽  
Nickel Titanium ◽  
Computed Tomographic ◽  
Root Canal Instrumentation

scholarly journals Root Canal Penetration of a Sodium Hypochlorite Mixture Using Sonic or Ultrasonic Activation

2014 ◽  
Vol 25 (6) ◽  
pp. 489-493 ◽  
Author(s):  
Marta Sáinz-Pardo ◽  
Roberto Estevez ◽  
Óliver Valencia de Pablo ◽  
Giampiero Rossi-Fedele ◽  
Rafael Cisneros
Keyword(s):  
Sodium Hypochlorite ◽  
Root Canal ◽  
Ex Vivo ◽  
Positive Pressure ◽  
Ultrasonic Activation ◽  
Penetration Length ◽  
Working Length ◽  
Closed Systems ◽  
Canal Shaping ◽  
Ex Vivo Study

The purpose of this ex vivo study was to determine, in "open" and "closed" systems, whether the design has an influence on the penetration length of sodium hypochlorite mixed with a radiopaque contrast medium, measured in millimeters, when delivered using positive pressure (PP) and using sonic (SI) or passive ultrasonic (PUI) activation. Sixty single-rooted teeth were divided into two groups: open and closed systems (n=30). Root canal shaping was performed to a working length of 17 mm. The samples were divided into three sub-groups (n=10) according to irrigant delivery and activation: PP, and SI or PUI activation. By using radiographs, penetration length was measured, and vapor lock was assessed. For the closed group, the penetration distance means were: PP 15.715 (±0.898) mm, SI 16.299 (±0.738) mm and PUI 16.813 (±0.465) mm, with vapor lock occurring in 53.3% of the specimens. In the open group, penetration to 17 mm occurred in 97.6% of the samples, and no vapor lock occurred. Irrigant penetration and distribution evaluation using open and closed systems provide significantly different results. For closed systems, PUI is the most effective in delivering the irrigant to working length, followed by SI.

scholarly journals Influence of NiTi alloy on the root canal shaping capabilities of the ProTaper Universal and ProTaper Gold rotary instrument systems

2017 ◽  
Vol 25 (1) ◽  
pp. 27-33 ◽  
Author(s):  
Jussaro Alves DUQUE ◽  
◽  
Rodrigo Ricci VIVAN ◽  
Bruno Cavalini CAVENAGO ◽  
Pablo Andrés AMOROSO-SILVA ◽  
...  
Keyword(s):  
Root Canal ◽  
Niti Alloy ◽  
Canal Shaping ◽  
Rotary Instrument

scholarly journals Use of Cone Beam Computed Tomography to Identify the Morphology of Maxillary and Mandibular Premolars in Chennai Population

2019 ◽  
Vol 22 (1) ◽  
pp. Process
Author(s):  
Rajamohan Rajakeerthi ◽  
Malli Suresh Babu Nivedhitha
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Root Canal ◽  
Treatment Success ◽  
Cone Beam ◽  
Type I ◽  
Root Canals ◽  
Computed Tomographic ◽  
Root Canal Anatomy ◽  
Computed Tomography Scanning

Objective: The complex root canal anatomy is inherently colonised by microbial flora. Endodontic treatment success is always related to adequate disinfection of the root canal space, which ultimately affects the treatment outcome. A thorough understanding of the external and internal root canal anatomy by using adequately imaging modalities is essential before planning any treatment. The aim of this study was to investigate the number and morphology of the root canals of maxillary and mandibular premolars in Chennai population. Material and Methods: Full-size cone-beam computed tomographic images were randomly collected from 100 patients, resulting in a total of 200 first and 200 second maxillary premolars as well as 200 first and 200 second mandibular premolars. All the eight premolars were analysed in single patients, who underwent cone-beam computed tomography scanning during pre-operative assessment (before implant surgery, orthodontic treatment, diagnosis of dental-alveolar trauma or difficult root canal treatment). Total number of roots and root canals, frequency and correlations between men and women were recorded and statistically analysed by using chi-square tests. The root canal configurations were rated according to the Vertucci’s classification. Results: In the maxillary first premolar group (n = 200), 36.3% had 1 root, 56.7% had 2 roots and 7.0% had 3 roots, with most exhibiting a type IV canal configuration. In the maxillary second premolar group (n = 200), 60% had 1 root, 29.8% had 2 roots and 10.2% had 3 roots, with the majority of single-rooted second premolars exhibiting a type I canal configuration. In the mandibular first premolar group (n = 200), 80.5% had 1 root, 9.8% had 2 roots and 5% had 3 roots. In the mandibular second premolar group (n=200), 90.1% had 1 root, 6.4% had 2 roots and 3.5 % had 3 roots, with most exhibiting a type I canal configuration. No statistical correlation was found between number of roots, gender and tooth position. Conclusion: This cone-beam computed tomographic study confirmed previous anatomical and morphological investigations. Therefore, the possibility of additional root canals should be considered when treating premolars. Keywords: Cone-beam computed tomography; Mandibular; Maxillary; Premolar; Root canal; Morphology.

scholarly journals Micro-CT Evaluation of Non-instrumented Canal Areas with Different Enlargements Performed by NiTi Systems

2015 ◽  
Vol 26 (6) ◽  
pp. 624-629 ◽  
Author(s):  
Gustavo De-Deus ◽  
Felipe Gonçalves Belladonna ◽  
Emmanuel João Nogueira Leal Silva ◽  
Juliana Roter Marins ◽  
Erick Miranda Souza ◽  
...  
Keyword(s):  
Surface Area ◽  
Root Canal ◽  
Repeated Measures ◽  
Significance Level ◽  
Isotropic Resolution ◽  
Computed Tomographic ◽  
Mandibular Molars ◽  
Canal Surfaces ◽  
Before And After ◽  
Ct Evaluation

The aim of this study was to compare the percentage of non-instrumented area of root canals prepared with different enlargements using single-file reciprocating systems (Reciproc and WaveOne) and a conventional multi-file rotary (BioRaCe) system by micro-computed tomographic analysis. Thirty mesial roots of mandibular molars with moderate curvature (10° to 20°) presenting a type II Vertucci canal configuration and similar internal volume were chosen and scanned at an isotropic resolution of 14.16 µm. The sample was assigned to 3 groups (n=10) according to the system used for root canal preparation: Reciproc, WaveOne, and BioRaCe groups. Second and third scans were taken after the canals were prepared with instruments sizes 25 and 40, respectively. The recorded images of the surface area voxels of the canals, before and after preparation were examined from the furcation level to the apex to quantify the non-instrumented surface. Statistical data were compared using GLM for repeated-measures with a significance level set at 5%. Instrumentation systems did not influence the percentage of untouched root canal surfaces (p=0.690) whilst a significant reduction in the percentage of static voxels was observed after the enlargement of the root canal (p=0.010) in all groups (p=0.507). None of the systems was able to prepare the entire surface area of the mesial root canal of mandibular molars. The increased final apical size resulted in a significant positive effect on the shaping ability of the tested systems.

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