In vivo and in vitro studies of the effect of the disodium salt of ethylenediamine tetra-acetate on human dentine and its endodontic implications

Patterson, Samuel S

doi:10.1016/0030-4220(63)90367-0

Cited by 101 publications

(75 citation statements)

References 4 publications

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“…17 The Knoop hardness number was reported 36 for resin blocks, and between 40 and 72 for dentine. 18 Resin may be softened by heat created with rotary instruments, and resin material does not cut in the same manner as dentine. 19 At the same time, resin blocks allow different instruments' shaping ability to be directly compared, and studies using extracted teeth have fully approved the results obtained from resin blocks.…”

Section: Discussionmentioning

confidence: 99%

The Shaping Ability of Five Different Nickel-Titanium Rotary Instruments in Simulated Root Canals

Göktürk¹,

Yücel²,

Sisman³

2015

Atatürk Üniversitesi Diş Hekimliği Fakültesi Dergisi

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The aim of this study was to compare the shaping ability of a recently introduced instrument (Revo-S) in comparison with the four current instruments (HeroShaper, Mtwo, ProTaper, RaCe) in simulated root canals. Material and methods: Nickel-Titanium systems (n=15 resin in each case) were used to prepare 34-35° curved and S-shaped simulated root canals in clear resin blocks. The width of resin removal was measured by comparing the pre-and postoperative images under a stereomicroscope. The amount and direction of transportation, the centering ability and the total amount of resin removal were determined. Canal aberration incidence, preparation time, and instrument deformation were also recorded. Results: In both canal types, the RaCe group prepared canals more rapidly (P < 0.05) and created no canal aberrations.The ProTaper Universal group was significantly slower than other groups (P < 0.05) for both canal types. The tapered canal form was obtained in the Mtwo, ProTaper Universal; and RaCe groups in 34-35° curved canals; and only the RaCe group in S-shaped canals. Some deformations but no instrument fractures were observed for HeroShaper, Mtwo, and Revo-S groups. Conclusion: RaCe rotary Nickel-Titanium instruments, probably do to their triangular cross-sectional shape with alternating cutting edges and sequence encompassing a high number of instruments, exhibited a better centrally shaping and fewer canal aberrations.

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Section: Discussionmentioning

confidence: 99%

The Shaping Ability of Five Different Nickel-Titanium Rotary Instruments in Simulated Root Canals

Göktürk¹,

Yücel²,

Sisman³

2015

Atatürk Üniversitesi Diş Hekimliği Fakültesi Dergisi

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“…111 The most effective means of smear layer removal involves a combination of EDTA and NaOCl to remove both inorganic and organic components, with NaOCl as the final flush. 111,118 While EDTA has little if any intrinsic antiseptic activity, 119 it may still contribute to disinfection of the root canal by facilitating removal of the smear layer.…”

Section: Ethylenediamene Tetraacetic Acid (Edta) Solutionmentioning

confidence: 99%

The principles of techniques for cleaning root canals

Parashos

Messer

2007

Australian Dental Journal

126

120

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Chemomechanical preparation of the root canal includes both mechanical instrumentation and antibacterial irrigation, and is principally directed toward the elimination of micro-organisms from the root canal system. A variety of instruments and techniques have been developed and described for this critical stage of root canal treatment. Since their introduction in 1988, nickel-titanium (NiTi) rotary instruments have become a mainstay in clinical endodontics because of their exceptional ability to shape root canals with potentially fewer procedural complications. Safe clinical usage of NiTi instruments requires an understanding of basic metallurgy of the alloy including fracture mechanisms and their correlation to canal anatomy. This paper reviews the biologic principles of preparing root canals with an emphasis on correct use of current rotary NiTi instrumentation techniques and systems. The role and properties of contemporary root canal irrigants is also discussed.Key words: Nickel-titanium alloy, root canal instrumentation, rotary preparation, irrigation, endodontics.Abbreviations and acronyms: EDTA = ethylenediamene tetraacetic acid; NaOC1 = sodium hypochlorite; NIET = non-instrumentation endodontic treatment; NiTi = nickel titanium; PAD = photo activated disinfection.

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“…A possibilidade de se induzir através da irrigação fi nal a desmineralização das paredes do canal e provocar erosão nos túbulos denti nários durante a remoção da camada residual, são aspectos não desejados que podem resultar da aplicação da solução de EDTA, seguida do hipoclorito de sódio 25,26,32 . Tal possibilidade está na dependência da concentração e do tempo de exposição das áreas denti nárias a estas substâncias [37][38][39] . Estudo ao sugerir que a descalcifi cação provocada pelo EDTA neutro baseia-se não apenas na ação de quelação de cálcio, enfati zou que a parte orgânica da denti na consti tui-se num importante elemento de compensação do processo de desmineralização 40 .…”

Section: Resultsunclassified

Estudo da Ação do Edta Sobre a Camada Residual no Tempo de 1 e 3 Minutos

Gesteira¹,

Silva²,

Lenzi³

et al. 2009

Pesq Bras Odontoped Clin Integr

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RESUMO ABSTRACTObjeti vo: Analisar, in vitro, através da Microscopia Eletrônica de Varredura, o efeito do EDTA nas concentrações de 3%, 5%, 10% e 17%, na remoção da camada residual e na desobstrução dos túbulos denti nários, nos tempos de 1 e 3 minutos. Método: Da amostra consti tuída de 80 dentes, foram selecionadas, randomicamente, oito unidades para compor o grupo controle negati vo (GC1) e 8 para consti tuírem o grupo controle positi vo (GC2 Objecti ve: To analyze, in vitro, by scanning electron microscopy (SEM), the eff ect of EDTA at concentrati ons of 3%, 5%, 10% and 17% for 1 and 3 minutes, on the removal of the smear layer and opening of denti nal tubules. Method: Eighty teeth were randomly assigned to groups as follows: 8 specimens were allocated to the negati ve control group (CG1), 8 to the positi ve control group (GC2), and the other 64 were distributed to 8 experimental groups (ExpG). Aft er root canal instrumentati on, fi nal irrigati on was done with the EDTA soluti ons, which were left in contact with the denti n surfaces for 1 and 3 minutes. Results: The analysis of the SEM micrographs at ×2,000 magnifi cati on revealed that 10% and 17% EDTA soluti ons were the most eff ecti ve, regardless of the applicati on ti me. Conclusion: Regarding the smear layer removal and denti nal tubule opening, the effi cacy of EDTA is not altered with the increase of the applicati on ti me from 1 to 3 minutes.

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In vivo and in vitro studies of the effect of the disodium salt of ethylenediamine tetra-acetate on human dentine and its endodontic implications

Cited by 101 publications

References 4 publications

The Shaping Ability of Five Different Nickel-Titanium Rotary Instruments in Simulated Root Canals

The Shaping Ability of Five Different Nickel-Titanium Rotary Instruments in Simulated Root Canals

The principles of techniques for cleaning root canals

Estudo da Ação do Edta Sobre a Camada Residual no Tempo de 1 e 3 Minutos

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