Sealing ability of Thermafil with and without sealer

Hata, Gin-ichiro; Kawazoe, Satoko; Toda, Tadao; Weine, Franklin S.

doi:10.1016/s0099-2399(06)80481-4

Cited by 66 publications

(48 citation statements)

References 15 publications

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“…At the apical end as well, the mean leakage associated with Densfil obturation was found to be comparable to that associated with lateral condensation. These results also agree with some previous studies (8,19,22,(26)(27)(28) but not with others (9,10,29,30). Thus, inconsistency in the results prohibits the drawing of meaningful conclusions regarding the performance of the solid core thermoplasticized gutta-percha technique.…”

Section: Discussionsupporting

confidence: 93%

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Sealing capacity in vitro of thermoplasticized gutta‐percha with a solid core endodontic filling technique

Valli

Rafeek

Walker

1998

Dental Traumatology

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8 Munksgaard, 1998. Abstract -This study assessed the sealing capacity of two endodontic gutta-percha filling techniques. Thirty-four single-rooted fully developed teeth were endodontically accessed, instrumented and randomly divided into two experimental groups (n=12) and two control groups (~5 ) .In Group A, root canals were obturated using a solid core thermoplastic technique (Densfil), in Group B and Group C (negative control) canals were obturated with laterally condensed gutta-percha, and in Group D (positive control) canals were left unobturated. AH-26 was used as the sealer. Two days later, the teeth were conventionally prepared for testing apical and coronal leakage, immersed in india ink for 5 days and subsequently cleared. The linear coronal and apical extent of dye penetration was measured under a light dissecting microscope. The mean apical leakage for Group A was 1.39 mm, and for Group B 2.76 mm, whereas the mean coronal leakage for Group A was 2.87 mm, and for Group B 4.03 mm. The differences between the groups were not statistically sigdicant (P'0.05).It has been established that endodontic treatment success depends on the root canal being well sealed by the endodontic filling, both apically (1) and coronally (2-6). Currently, there are several endodontic filling techniques available. The most accepted, and the standard with which all other techniques are compared, is lateral condensation of gutta-percha (7). One endodontic filling technique that has gained popularity is the application of thermoplasticized gutta-percha by means of a solid carrier. The sealing capacity of this filling technique has been investigated, however, with conAicting results (8-1 3). The majority of studies have assessed the sealing ability of this technique by testing apical leakage (1 1-13), but the seal at both the coronal and the apical levels has not been investigated.The aim of this in vitro study was to assess the coronal and apical seal provided by thermoplasticized

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Section: Discussionsupporting

confidence: 93%

“…Dye penetration can be observed after splitting the roots (8) or after clearing them (9,10,19). The clearing technique renders the tooth transparent, which enables observation of dye penetration in three dimensions and thus the recording of its maximum extent.…”

Section: Discussionmentioning

confidence: 99%

Sealing capacity in vitro of thermoplasticized gutta‐percha with a solid core endodontic filling technique

Valli

Rafeek

Walker

1998

Dental Traumatology

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“…No entanto, ainda é descrito que alguns cimentos encolhem e outros são suscetíveis a deslocamentos e solúveis 7 . Diante dessas propriedades físicas deficientes, tem sido sugerido que a obturação deve ter apenas uma fina camada de cimento entre a guta percha e as paredes do canal radicular 9 . Embora o cimento utilizado nessa investigação, Ahplus, revele resultados satisfatórios recentes com relação as suas propriedades físico-químicas e biológicas 11,30 parece ser mais ideal o emprego de técnicas que utilizam a guta-percha plastificada, pois dessa forma o componente cimento…”

Section: Discussionunclassified

“…Entretanto, as áreas preenchidas por esse material são mais vulneráveis em função da decomposição e contrações que o mesmo pode sofrer com o passar do tempo 7 . Isso faz com que haja um limite da presença de cimento na obturação, sendo recomendada apenas uma pequena quantidade, formando uma fina camada em torno da guta-percha desejável para o preenchimento de quase todo o complexo sistema dos canais radiculares 8,9 . Novas técnicas têm sido propostas objetivando diminuir tempo operatório, bem como consumo de material e claro, melhorar as características da qualidade do preenchimento de guta-percha no terço apical do canal radicular.…”

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Avaliação de Técnicas de Obturação para Canais Instrumentados pelo Sistema Reciproc®

Piati¹,

Pereira²,

Ramos³

et al. 2013

Pesqui. bras. odontopediatria clín. integr.

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Objetivo: Investigar se a modelagem do sistema Reciproc interfere na realização da técnica Sistema (TC) e compará-las com outras duas técnicas: Cone Único sistema Reciproc (CU) e Mcspadden Modificada(MC), quanto à porcentagem da área preenchida por gutapercha, cimento Ahplus e áreas vazias, no terço apical em canais instrumentados pelo sistema Reciproc ® . Metodologia: Quinze raízes mesiais de molares inferiores foram instrumentadas por instrumento único recíproco R25 e separadas nos grupos: CU, TC e MC. Após as obturações os dentes foram seccionados nos níveis de 2mm e 4mm do forame e imagens foram obtidas para medir a porcentagem da área do canal obturada com os materiais obturadores e os espaços vazios, sendo os dados submetidos ao teste estatístico de Kruskal-Wallis. Resultados: Comparando-se as técnicas sem distinção dos níveis, verificou-se que, para o preenchimento Guta Percha, TC se diferenciou de CU e de MC, apresentando média maior que ambas. Para o Cimento, novamente as diferenças surgiram entre TC e as outras duas, mas com TC apresentando média menor que elas. Com relação à Área Vazia não foi encontrada diferença estatisticamente significativa entre TC, CU e MC. Conclusões: A modelagem proporcionada pela lima R25 do Sistema Reciproc não interfere no emprego da técnica TC. O preenchimento com Guta Percha apresentou maior media na técnica TC, em conseqüência, o Cimento apresentou a menor média, ambos com diferenças significantes para MC e CU. Com relação à Área Vazia o comportamento foi igual para todas as técnicas.Obturação do Canal Radicular; Endodontia; Materiais Restauradores do Canal Radicular.Objective: To investigate whether the shaping promoted by the Reciproc ® system interferes with performing the System technique (TC) in comparison with two other techniques -Single Cone Reciproc ® system (CU) and Modified Mcspadden (MC) -, relative to the percentage of the area filled by gutta-percha and Ahplus sealer and non-filled areas in the apical third of canals instrumented with the Reciproc ® system. Methods: Fifteen mesial roots of mandibular molars were instrumented by a single reciprocate R25 file and assigned to three groups: CU, TC and MC. After root filling, the teeth were sectioned at 2 and 4 mm short of the apical foramen. Images were captured to calculate the percentages of canal area occupied by and free of filling material. Data were analyzed statistically by the Kruskal-Wallis test. Results: Comparison of the techniques regardless of apical levels revealed that for gutta-percha filling, TC presented significantly greater means than CU and MC. For the sealer, TC presented significantly lower means than CU and MC. Regarding the area free of filling material, no statistically significant difference was found among TC, CU and MC. Conclusions: Canal shaping produced by the Reciproc ® system's R25 file does not interfere with the use of the TC technique. Gutta-percha filling presented the greatest mean value with the TC technique and sealer filling presented the lowest mean value, both with sig...

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“…Many authors have evaluated the quality of the apical seal after different root canal filling techniques 2,7,9 . Among these techniques, lateral condensation with gutta-percha points provides adequate apical sealing, however this also depends on the sealer used 11,18 . Nowadays, different root canal preparation techniques using rotary Nickel-Titanium instruments and thermoplastic root canal filling methods are indicated 8,15,18 .…”

Section: Introductionmentioning

confidence: 99%

Effect of different rotary instrumentation techniques and thermoplastic filling on apical sealing

Leonardo

Cervi²,

Tanomaru

et al. 2004

J. Appl. Oral Sci.

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he aim of this study was to evaluate apical sealing after root canal treatment using two different rotary instrumentation techniques and two thermoplastic root canal filling techniques. The study was performed in 115 human extracted mandibular premolars. After coronary access the apical foramen was opened with a # 15 K file 1 mm beyond the apex. Cleaning and shaping was subsequently carried out at the working length, 1 mm from the apex, with ProFile .04/.06 system (Dentsply/Maillefer), Quantec (Analytic Endodontics/Kerr) or by the step-back technique with 1% sodium hypochlorite solution as irrigating solution. The root canals were filled with Thermafil (Dentsply/ Maillefer) or Microseal (Analytic Endodontics/Kerr) or by lateral condensation technique using AH Plus sealer (epoxy type). The teeth were immersed in 2% methylene blue under vacuum. Then, they were longitudinally sectioned. The results showed that the association of Profile and Thermafil Plus provide the best results (p<0.05). In conclusion, the association of different rotary instrumentation techniques and different filling systems influenced the apical sealing.

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Sealing ability of Thermafil with and without sealer

Cited by 66 publications

References 15 publications

Sealing capacity in vitro of thermoplasticized gutta‐percha with a solid core endodontic filling technique

Sealing capacity in vitro of thermoplasticized gutta‐percha with a solid core endodontic filling technique

Avaliação de Técnicas de Obturação para Canais Instrumentados pelo Sistema Reciproc®

Effect of different rotary instrumentation techniques and thermoplastic filling on apical sealing

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