Article

Effectiveness of different obturation techniques in the filling of simulated lateral canals.

Department of Endodontics, School of Dentistry, USAL-AOA, Buenos Aires, Argentina.
Journal of Endodontics (impact factor: 2.88). 06/2001; 27(5):362-4. DOI:10.1097/00004770-200105000-00015 pp.362-4
Source: PubMed

ABSTRACT The purpose of this in vitro study was to evaluate the ability of lateral compaction of gutta-percha and of five thermoplasticized gutta-percha filling techniques to obturate simulated lateral canals. Sixty extracted single-rooted human teeth were instrumented at the working length to a #35 file before creating three simulated lateral canals on the mesial and distal surfaces of the root, one in each third, using a #15 engine reamer. After enlarging root canals to a #45 file, the teeth were randomly divided into six equal groups of 10 and obturated according to the following techniques: lateral compaction of gutta-percha (group A), hybrid technique (group B), Ultrafil (group C), Obtura II (group D), System B + Obtura II (group E), and Thermafil (group F). AH26 was used as the sealer. A greater number of simulated lateral canals were obturated when Ultrafil, Thermafil, and System B + Obtura II were used, in comparison with canals obturated with the hybrid technique, Obtura II, or lateral compaction of gutta-percha. This difference was statistically significant (p < 0.05). No statistically significant differences were found between results obtained in the obturation of simulated lateral canals in the different thirds of the root (p > 0.05).

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    Article: Evaluation of the thermoplasticity of different gutta‐percha cones and Resilon®
    Mário Tanomaru-Filho, Geraldine Faccio, Dds Silveira, Juliane Maria, Guerreiro Tanomaru, Carlos Alexandre Souza
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    ABSTRACT: The goal of this study was to evaluate the thermoplasticity of conventional and thermoplastic gutta-percha and Resilon ® , a polyester polymer-based material. Specimens with standardised dimensions were made from the following mate-rials: conventional and thermoplastic gutta-percha (Dentsply), conventional and thermoplastic gutta-percha (Endopoints) and Resilon ® . After 24 h, the specimens were placed in water at 70°C for 60 s, and thereafter positioned between two glass slabs. Each set was compressed by a 5-kg weight. Digital images of the specimens before and after compression were obtained and anal-ysed. The thermoplasticity of each material was confirmed by the difference between final and initial areas of each sample. The data were analysed statisti-cally by ANOVA and Tukey's test at a 5% significance level. Resilon ® had the highest thermoplasticity means (P < 0.05). Among the gutta-percha cones, Endopoints TP (thermoplastic) presented the highest thermoplasticity means and differed significantly from the other commercial brands (P < 0.05). Resilon ® had good thermoplasticity, endorsing its use as a thermoplastic root canal filling material.
    Australian Society of Endodontology Aust Endod J. 01/2007; 33:23-26.
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    Article: A comparison of three gutta-percha obturation techniques to replicate canal irregularities.
    Jake Collins, Mary P Walker, James Kulild, Charles Lee
    [show abstract] [hide abstract]
    ABSTRACT: A split-tooth model with artificially created intracanal wall defects was used to compare three gutta-percha (GP) obturation techniques, cold lateral, warm lateral, and warm vertical. The techniques were evaluated and compared based on defect replication quality as a function of defect location and size. The obturations were evaluated on an ordinal scale, 0 to 4, based on how much each defect was replicated. There was a statistically significantly better result with both warm techniques compared to cold lateral obturation, while there was no significant difference between the warm obturation techniques.
    Journal of Endodontics 09/2006; 32(8):762-5. · 2.88 Impact Factor
Data provided are for informational purposes only. Although carefully collected, accuracy cannot be guaranteed. The impact factor represents a rough estimation of the journal's impact factor and does not reflect the actual current impact factor. Publisher conditions are provided by RoMEO. Differing provisions from the publisher's actual policy or licence agreement may be applicable.

Keywords

#15 engine reamer
 
canals obturated
 
different thirds
 
distal surfaces
 
following techniques
 
greater number
 
group A
 
group B
 
group C
 
group F
 
gutta-percha
 
lateral compaction
 
Obtura II
 
simulated lateral canals
 
single-rooted human teeth
 
statistically significant differences
 
System B + Obtura II
 
thermoplasticized gutta-percha
 
Ultrafil
 
working length
 

F Goldberg