Evaluation and comparison of sealing ability of three different obturation techniques - Lateral condensation, Obtura II, and GuttaFlow: An in vitro study

Abstract

Aim:To evaluate and compare the sealing ability between the conventional cold lateral condensation technique and two different obturating techniques — Obtura II and GuttaFlow under a stereomicroscope at 40× magnification.Materials and Methods:Sixty single-rooted teeth were selected and the canals were shaped with ProTaper rotary files. Irrigation was performed with 5% sodium hypochlorite and 17% EDTA. The teeth were then separated into three groups depending on the type of obturation technique. Group A (n = 20) — obturated using the Lateral condensation technique and AHplus sealer, Group B (n = 20) — obturated with Obtura II injection-molded thermoplasticized technique and AHplus sealer, and Group C (n = 20) obturated using GuttaFlow. After storing the teeth in 100% humidity for seven days at 37°C, the roots of the teeth were sectioned at five levels. The sections were then observed under a stereomicroscope at 40 × magnification and the images were analyzed for area of voids (AV) and frequency of voids.Statistical Analysis Used:The data was statistically analyzed using the SPSS version 17 software. The 95% confidence intervals (CI) were calculated. One-way analysis of variance with post-hoc test and non-parametric Mann-Whitney U test was carried out, to compare the means.Results:The lowest mean of AV was recorded in the Obtura II group, 1.0% (95% CI = 0.5 – 1.5). This was statistically and significantly different from the GuttaFlow group, 3.0% (95% CI = 2.1 – 3.9). There was no significant difference between the Obtura II group and the lateral condensation group, 1.6% (95% CI= 1.0 – 2.2) with regard to the area of voids, but there was a statistically significant difference between the Lateral condensation and GuttaFlow groups. The GuttaFlow group showed the maximum number of voids, 56% (95% CI = 48 – 64), which was significantly higher than those in the lateral condensation, 26% (95% CI= 19 – 34), and Obtura II, 15% (95% CI= 10 – 21) groups.Conclusion:The Obtura II technique utilizing the injection-molded thermoplasticized gutta-percha had better adaptability to the canal walls when compared to the GuttaFlow obturation and lateral condensation techniques.

Comparative Evaluation of Apical Sealing Ability of Different Obturation Techniques by Confocal Microscopy: An In Vitro Study

“…6 In the present study, the most commonly used and studied technique was lateral condensation because of its easy placement of materials. 7 Thermafil is a carrier-based, thermoplasticized technique described by Johnson. Johnson claimed that the technique was effective in filling all canal spaces and isthmuses.…”

Evaluation of Microleakage in Single-Rooted Teeth Obturated with Thermoplasticized Gutta-Percha Using Various Endodontic Sealers: An In-Vitro Study

“…4,5,21,22 Instead of longitudinal section, a few authors have suggested transverse sectioning of the roots at predetermined distances from the apex to assess the dye penetration at each level. 23,24 Transverse sectioning is considered as more damaging than longitudinal sectioning. Although it allows a better visualization of the dye penetration, the objective measurement of dye penetration in these sections is more difficult to measure with accuracy.…”

Coronal Microleakage Of Enterococcus Faecalis In Three Types Of Endodontic Filling (Warm Vertical Compaction, Lateral Compaction, And Single Cone)

“…5,6 La técnica de cono único en frío, por el contrario, está siendo ampliamente usada en nuestro medio debido a su facilidad y bajos costos, sin importar que se logre o no el sellado tridimensional del conducto radicular, lo cual va en contraposición a la evidencia, que ha demostrado que esta técnica presenta altos índices de fracaso debido a su falta de sellado. [7][8][9][10] La filtración con tintes y la filtración microbiana son los dos métodos más comunes para evaluar la microfiltración de obturaciones endodónti-cas, 11 pero la filtración microbiana es el método más relevante, ya que se ajusta a las condiciones clínicas. En nuestra investigación se usó la técnica de doble cámara, método que fue introducido por primera vez por Torabinejad y colaboradores 12 (Figura 1).…”

“…5,6 The cold single-cone technique, on the contrary, is being widely used nowadays due to its simplicity and low cost, even though it does not provide a threedimensional sealing of the root canal, in contrast to the evidence, which has demonstrated that this technique has high failure rates due to poor sealing. [7][8][9][10] Dye penetration and microbial filtration are the two most common methods to evaluate microleakage of endodontic obturations, 11 but microbial filtration is the most relevant method, since it fits clinical conditions. This study used the dual chamber technique, a method that was first introduced by Torabinejad et al 12 ( Figure 1).…”