Percentage of canals filled in apical cross sections – an in vitro study of seven obturation techniques

Abstract

Simplifill as recommended, Thermafil, mechanical lateral and WVC (Schilder) obturation techniques created more complete obturation using gutta-percha at the 2 and 4 mm levels than cold lateral, WVC (continuous wave), and Simplifill not used as directed.

The sealing ability of a new silicone-based root canal filling material (GuttaFlow): an in vitro study using the percentage of gutta-percha-filled area

“…Subsequently, this method was employed in numerous studies to evaluate and compare obturation techniques and products 23,25,28,29) . In all these studies 23,25,28,29) , the area of the canal versus the areas occupied by gutta-percha, sealer and voids were measured in cross-sections, eventually culminating in PGFA date. The higher the PGFA, the smaller the areas occupied by the sealer and voids, the better is the root canal sealing quality.…”

Influence of the Method in Root Canal Filling Using Active Lateral Compaction Techniques

“…Stereomicroscopy was used to evaluate the quality of the root canal filling (7,20) and the GP, sealer and voids area. Confocal laser microscopy was used to assess sealer distribution.…”

“…Two current and favorable methods of in vitro analysis of the quality of root filling and transdentinal filling material penetration include stereomicroscopy and confocal laser microscopy (7)(8)(9)(10).…”

Effectiveness of gutta-percha and Resilon in filling lateral root canals using the Obtura II system

“…The thermoplasticity of different types of gutta-percha is affected by their chemical compositions 15,17,18 as well as the thermal changes induced during the manufacturing process and the use of these materials. 17 Although several endodontic techniques have been evaluated with respect to their ability to adequately fill the root canal and its irregularities, 9,11,12 few studies have focused on the thermoplasticity of different brands of guttapercha and Resilon when using thermoplastic techniques. 8,19,20 Resilon (Resilon Research LLC, Madison, USA), a synthetic polymer-based material, has been proposed as an alternative to gutta-percha.…”

“…[6][7][8] It has been suggested that the ideal root canal filling should consist of a sufficient amount of gutta-percha covered by a thin layer of a sealer. 9,10 In this regard, several filling techniques employing thermoplastic guttapercha have been evaluated for their effectiveness in filling irregular or lateral root canals. 9,[11][12][13][14] Evaluation of thermoplastic root canal filling techniques showed that assessment of the properties of gutta-percha in response to heat is of paramount importance.…”