Apical placement of needle tip with an injection‐thermoplasticized gutta‐percha technique for root canal obturation

Lambrianidis, T.; Veis, Alexander; Zervas, P; Molyvdas, Ioannis

doi:10.1111/j.1600-9657.1990.tb00390.x

Cited by 3 publications

(1 citation statement)

References 19 publications

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“…Os autores relataram que a guta-percha se esfriou rapidamente após ser injetada no canal radicular em ambos os sistemas. Em 1992, VEIS et al144 repetiram o trabalho de LAMBRIANIDIS et al84 , de 1990, variando apenas o modo da condensação vertical.A condensação vertical em vez de ser realizada apenas ao término da obturação, como no caso anterior, foi realizada em três fases. Após cada fase de injeção da guta-percha, a mesma era condensada verticalmente com condensadores manuais.Os resultados, em relação à infiltração apical, foram semelhantes aos do trabalho anterior.…”

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Avaliação in vitro do selamento apical dos canais radiculares em função de diferentes técnicas de obturação

Brosco¹

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Aos meus pais Wantuir e Wadet, que sempre me incentivaram para que eu pudesse conquistar meus objetivos. Vocês são meu ponto de referência; meu maior exemplo de amor, carinho, simplicidade e honestidade. Tudo o que tenho hoje devo, exclusivamente, a vocês. Tenho orgulho em ter pais tão maravilhosos! A toda minha família, em especial aos meus irmãos Willian, Waldir e Walquíria e aos meus sobrinhos, por estarem sempre presentes na minha vida e fazerem parte da minha história. Vocês moram no meu coração. Ao meu namorado Fábio, pelo carinho e amor que você me transmite diariamente, mesmo a distância. Ao meu orientador Prof. Dr. Norberti Bernardineli, "O aprendizado nunca termina. Não existe parte da vida que não contenha lições. Se você está vivo, há lições para aprender." (Anônimo) Por me ajudar a concretizar mais essa "lição da minha vida" através de uma orientação precisa e minuciosa; Pelos ensinamentos, pela paciência, respeito, confiança e, principalmente, pela grande amizade durante a nossa convivência;

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Avaliação in vitro do selamento apical dos canais radiculares em função de diferentes técnicas de obturação

Brosco¹

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In vitro evaluation of apical leakage of root canal fillings after in situ obturation with thermoplasticized and laterally condensed gutta‐percha

Veis¹,

Molyvdas²,

Lambrianidis³

et al. 1994

Int Endodontic J

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The purpose of this investigation was to compare in vitro the sealing ability of root canal treatments performed in situ with injected thermoplasticized gutta-percha compared with the lateral condensation technique. Thirty single-rooted teeth with straight canals, due for extraction for orthodontic or periodontal reasons were prepared using a step-back technique. Teeth were then divided randomly into groups A and B and obturated, respectively, with the sectional injection thermoplasticized gutta-percha and the lateral condensation techniques. Teeth were extracted after 15 days, immersed in India ink for 3 days and the leakage was determined using area-metric analysis. The roots were ground transversally and the root portion was incrementaly removed with successive steps of 250 microns each, up to the coronal level of the dye penetration. Every section was photographed with a stereoscopic microscope under the same magnification (x20); 310 photographs were taken. Measurements of the area covered by ink as well as the whole cross-sectional area of the canal were made from each photograph with the aid of a digitizing computer. The measurements were subjected to non-parametric statistical analysis. No significant difference was found (P > 0.05). The technique of lateral condensation proved to be better in the first five sections (1.2 mm from the foramen) while thermoplasticized gutta-percha technique was superior in the rest of the root canal.

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Sealing ability of sectional injection thermoplasticized gutta‐percha technique with varying distance between needle tip and apical foramen

Veis¹,

Lambrianidis²,

Molyvdas³

et al. 1992

Dental Traumatology

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The purpose of this investigation was to evaluate the influence of the distance of the needle tip from the apical foramen on the apical seal and the length control of the root filling material when thermoplasticized gutta-percha is injected using a sectional injection technique. Ninety-nine human single-rooted mandibular incisors and permanent premolars with straight canals were divided into three equal Groups A, B and C. In Group A the teeth had relatively the wider root canal, in Group C the narrowest, while in Group B root canal size was intermediate. The root canals of all teeth were prepared with a step-back technique. Roots of Group A were instrumented to a Size 70 4 mm short of the working length, while roots of Groups B and C to a Size 70 6 mm and 8 mm short of the working length, respectively. The teeth of all groups were covered with aluminium foil and embedded in acrylic blocks. After the placement of sealer (Roth 811) the root canals of all teeth were obturated with injection-molded thermoplasticized gutta-percha using a three-stage sectional technique. The roots remained in India ink for three days and then cleared by successive immersion in nitric acid, ascending grades of alcohol and finally in xylene. The linear dye penetration and the linear apical underextentionion of the root canal filling were measured by two independent examiners under a stereo microscope. There was no significant difference in the linear dye leakage between the groups.(ABSTRACT TRUNCATED AT 250 WORDS)

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Apical placement of needle tip with an injection‐thermoplasticized gutta‐percha technique for root canal obturation

Cited by 3 publications

References 19 publications

Avaliação in vitro do selamento apical dos canais radiculares em função de diferentes técnicas de obturação

Avaliação in vitro do selamento apical dos canais radiculares em função de diferentes técnicas de obturação

In vitro evaluation of apical leakage of root canal fillings after in situ obturation with thermoplasticized and laterally condensed gutta‐percha

Sealing ability of sectional injection thermoplasticized gutta‐percha technique with varying distance between needle tip and apical foramen

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