Investigation of the canal space occupied by gutta‐percha following lateral condensation and thermomechanical condensation

Abstract

Summary. Since root canal sealers and pastes can cause tissue irritation, the quantity of biologically inert gutta‐percha should constitute more than 90 per cent by volume of the root canal filling. The root canals of 40 extracted incisors with straight root canals were enlarged sequentially to size 50 and the canals were obturated, either by lateral condensation or thermomechanical condensation using standardized gutta‐percha points and Grossman's sealer. After being stored in moistened gauze for 6 hours at 37°C, transverse sections 1 mm from the apex were made, and the area of gutta‐percha in relation to the total cross section of the canal was determined planimetrically using a light microscope. Sections of teeth filled by the lateral condensation method contained 92.7 per cent gutta‐percha, while whose filled by thermomechanical condensation contained 89.1 per cent. As a result lateral condensation continues to be recommended as the filling method of choice for dental practice.

An evaluation of the quality of root fillings in mandibular incisors and maxillary and mandibular canines using different methodologies

“…8,[12][13][14] In general, the higher the PGP, the smaller the area of sealer and voids, the better the quality of the root canal filling. 4,15 The PGP score may reveal filling problems in the oval canal.…”

An ex vivo comparison of three different gutta‐percha cones when compacted at different temperatures: rheological considerations in relation to the filling of lateral canals

“…Previous studies, comparing the effectiveness of filling techniques, have given conflicting results. Some (Peters 1986, Beer et al 1987, Jacobsen & Begole 1992, Liewehr et al 1993 reported that none of the techniques studied provided a superior seal whilst other studies reported better filling of lateral canals (Brothman 1981, Clark & ElDeeb 1993, Goldberg et al 2001 and better outcomes from treatments using warm gutta-percha (Farzaneh et al 2004).…”

Opção pela técnica híbrida de Tagger para obturação de canais radiculares em clínica de pós-graduação em endodontia

“…Estudos têm evidenciado sua capacidade de proporcionar bom vedamento marginal, especialmente no terço apical [6][7][8] . Entretanto, Cohen e Burns 9 relatam que essa técnica não produz a fusão dos cones em uma massa única.…”