Diameter and Taper Variability of Single-file Instrumentation Systems and Their Corresponding Gutta-percha Cones

Haupt, Franziska; Seidel, Miriam; Rizk, Marta; Sydow, Hans-Georg; Wiegand, Annette; Rödig, Tina

doi:10.1016/j.joen.2018.06.005

Cited by 10 publications

(17 citation statements)

References 26 publications

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“…The optical microscope is a validated and affordable system for the evaluation of the diameter of files and gutta-percha cones ( 4 , 11 – 14 ). Other instruments have also been used for such purpose: scanning electron microscope ( 5 ), atomic force microscope ( 15 ), calibrated ruler, ( 16 , 17 ) digital calibrator ( 16 , 18 , 19 ) or laser scan ( 20 ).…”

Section: Discussionmentioning

confidence: 99%

“…Although manufacturing methods are being updated and new materials and technologies are being incorporated in the development of gutta-percha cones, studies continue to conclude that there is still a substantial dimensional variability between endodontic files and gutta-percha cones adapted to their dimensions, regardless of the manufacturer ( 4 , 5 ).…”

Section: Introductionmentioning

confidence: 99%

“…The use of gutta-percha cones with and equivalent taper and diameter to that of the last instrument used to shape the root canal is essential to achieve a correct three-dimensional apical seal ( 6 ). This requires that this instrument and its respective gutta-percha cone have been manufactured with the same standardized protocol ( 4 ).…”

Section: Introductionmentioning

confidence: 99%

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Diameter and taper variability of gutta-percha cones adapted to TruNatomyTM and RotateTM rotary file systems

Martínez¹,

Lozano²,

Sanz³

et al. 2023

J Clin Exp Dent

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Background Evaluate the discrepancy in diameter and taper between adapted gutta-percha cones for TruNatomyTM 26.04 (TRU04), RotateTM 25.04 (ROT04) and 25.06 (ROT06) systems and their reference files. Material and Methods A sample of 60 gutta-percha cones and 15 rotary files was selected and divided into three groups (TRU04, ROT04, ROT06). Each group consisted of 20 cones and 5 corresponding files. They were observed under an optical microscope at x20 magnification and images of all observations were obtained. Diameters were measured with a digital ruler calibrated at 3 levels: D1, D3, D16 (mm from tip). The taper of each system of cones and files was calculated, The percentage of discrepancy between the taper of each file system and its corresponding gutta-percha cone was calculated. Results The percentage of discrepancy between the diameter of the tested gutta-percha cones and their corresponding files varied from -7% to 21%. The smallest dimensional discrepancy between gutta-percha cone and corresponding file was found at D16 in TRU04 group. The tapers of the gutta-percha cones vs their respective files were: 2% vs 3% (TRU04), 4% vs 5% (ROT04), and 6% vs 5% (ROT06). The highest discrepancy was observed at D16 in ROT06 group. The global taper discrepancy between gutta-percha cone and its corresponding file was negative in TRU04 and ROT04 groups. Conclusions The taper and the diameter at D1, D3, and D16 differed between all of the tested gutta-percha cones and their corresponding files. TruNatomy 26.04 files and its adapted gutta-percha cones exhibited the least discrepancy. Key words: Corresponding gutta-percha, rotary file, taper, TruNatomy, Rotate, standardization.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Diameter and taper variability of gutta-percha cones adapted to TruNatomyTM and RotateTM rotary file systems

Martínez¹,

Lozano²,

Sanz³

et al. 2023

J Clin Exp Dent

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“…Para tanto, os cones GP usados para obturação sejam padronizados e correspondam ao último instrumento usado no comprimento de trabalho (Faria et al, 2018;Haupt et al, 2018). Atualmente, a ADA e a ISO são duas organizações internacionais que padronizam os cones GP, e de acordo com as normas vigentes, o diâmetro aceito do cone GP pode variar de 0,005 a 0,007 mm.…”

Section: Discussionunclassified

Avaliação do calibre apical e conicidade de cones de guta-percha acessórios medium de três marcas comerciais brasileiras

Castro¹,

Lima²,

Araújo³

2022

RSD

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A guta-percha é considerada o melhor material para obturação do canal radicular e o cumprimento das normas internacionais para sua fabricação é de extrema importância para a etapa de obturação. Esta pesquisa teve como objetivo avaliar o diâmetro da ponta e conicidade de cones acessórios de guta-percha não estandardizados tamanho M de três diferentes marcas comerciais brasileiras: Tanari, Odous e MK Life. Para tanto, 20 cones de cada marca foram fotografados, com auxílio do de um mini microscópio com câmera digital acoplada, para obter medições dos seguintes parâmetros: diâmetro da ponta (D0), diâmetro a 3 mm da ponta (D3), diâmetro a 16 mm da ponta (D16) e conicidade (C). As medidas encontradas foram submetidas a análises estatísticas e comparações entre os grupos das médias de cada parâmetro avaliado. As especificações ANSI/ADA números 57 e 78 foram utilizadas como referências para a análise da estandardização dos cones testados. Os respectivos valores médios de D0 e conicidade encontrados foram 0,05 mm e 0,07 para os cones Odous, 0,15 mm e 0,05 mm para os cones da fabricante Tanari, e 0,07 mm e 0,05 mm os cones da marca MK Life. De posse dos resultados, foi possível concluir que não existe padronização dos cones obturadores M entre as marcas avaliadas com discordância do preconizado pelas especificações ANSI/ADA.

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“…A possible explanation is the high tolerance level determined by ANSI/ADA. Thus, even when following the recommended guidelines, some variability should be expected within the dimensions of different cones [24]. The use of a calibrator or endodontic ruler is therefore indicated.…”

Section: Discussionmentioning

confidence: 99%

Experimental Resin-Based Monoblock Endodontic Obturation System

Pereira

Piva

Cuevas‐Suárez

et al. 2019

BioMed Research International

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Objective The aim of the present study was to characterize a novel resin-based monoblock endodontic obturation system consisting of a polymeric cone and a resin-based endodontic sealer. Methods The preliminary tests performed for the experimental cone were as follows: cohesive strength, dimensional stability, standardization of the diameter and taper, calcium ion release, and radiopacity, for the characterization of the experimental sealer, film thickness and flow tests were performed. Tests were performed according to the American National Standards Institute/American Dental Association (ANSI/ADA) Standards Nos. 57 and 78. The experimental cone was compared to gutta-percha, whereas the experimental sealer was compared to AH Plus. Data were analyzed by Student's t-test (α = 0.05). Results The experimental cone had superior values for cohesive strength and dimensional stability compared to gutta-percha. Regarding calcium ion release, the experimental system continued to release calcium ions after 30 days. Film thickness was similar for both endodontic sealers; conversely, the experimental resin-based sealer achieved higher values for flow compared to AH Plus. Conclusion The experimental resin-based monoblock obturation system fully met the requirements of the ANSI/ADA Standard No. 78 and the ANSI/ADA Standard No. 57, except for radiopacity. Considering this, further studies are still needed to evaluate other radiopacifiers and the effect of their incorporation on the physicochemical properties of this novel resin-based monoblock endodontic obturation system.

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Diameter and Taper Variability of Single-file Instrumentation Systems and Their Corresponding Gutta-percha Cones

Cited by 10 publications

References 26 publications

Diameter and taper variability of gutta-percha cones adapted to TruNatomyTM and RotateTM rotary file systems

Diameter and taper variability of gutta-percha cones adapted to TruNatomyTM and RotateTM rotary file systems

Avaliação do calibre apical e conicidade de cones de guta-percha acessórios medium de três marcas comerciais brasileiras

Experimental Resin-Based Monoblock Endodontic Obturation System

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