Apical debris extrusion associated with oval shaped canals: a comparative study of WaveOne vs Self-Adjusting File

Abstract

The results of the present ex vivo comparative study cannot be directly applied to the clinical situation. Difference between both groups remains completely unclear; maybe the amount of extrusion is harmless in both groups or similarly deleterious for the periradicular tissues in both groups or may be dose-related to the amount of the extruded material.

Counterclockwise or clockwise reciprocating motion for oval root canal preparation: a micro‐CT analysis

“…, Farmakis et al . , de Siqueira et al . ), especially as they are more difficult to clean effectively (Versiani et al .…”

“…Cross-sectional root canal morphology directly influences many endodontic procedures, such as root canal preparation (Versiani et al 2013) and filling (Rechemberg & Paqu e 2013). Oval root canals are often studied (Oliveira et al 2015, Farmakis et al 2016, de Siqueira et al 2016, especially as they are more difficult to clean effectively (Versiani et al 2013).…”

Evaluation of Apically Extruded Debris Using Positive and Negative Pressure Irrigation Systems in Association with Different Irrigants

“…During chemo-mechanical preparation (CMP), root canal instruments and intracanal irrigants are used for the elimination of pulp tissue, microorganisms, as well as for the removal of debris from the root canal system (1). During the use of endodontic instruments and irrigants, organic and inorganic debris, bacteria and irrigants may extrude to the periradicular tissues (2)(3)(4). An important clinical situation resulting from apically extruded debris during endodontic therapy has to do with flare-up, which consists of acute exacerbations of an asymptomatic pulpal and/or periradicular pathologic condition.…”

Shaping ability of rotary or reciprocating systems for oval root canal preparation: a micro-computed tomography study

“…Root canal preparation may be influenced by the design [1], kinematics [2][3][4], diameter and taper [5], and the number of instruments used [6,7]. Reciprocating motion allows preparation with a lower number of instruments [8].…”

“…Oval-shaped and flattened root canals may make it difficult to root canal preparation, especially because they present areas that are difficult to access, favoring the accumulation of debris and microorganisms [10,11]. The ovalshaped morphology has been studied [3,4,12,13] and self-adjusting instruments [14] or different additional disinfection procedures [15,16] have been proposed to improve cleaning. Nevertheless, some regions of the canal may remain unprepared [3,17,18].…”