Aim: The aim of this systematic analysis was to assess the prevalence dentinal microcracks at various levels (3, 6, and 9 mm from apex) after using instruments made with conventional, R-Phase, M-Wire NiTi alloys SAF system. Materials Methods: Electronic searches were conducted in databases Embase, Cochrane Library, Scopus, PubMed, Web Science. To arrange search methods, “MeSH” terms and/or keyw...

O objetivo da presente investigação foi avaliar a capacidade de corte 4 instrumentos endodônticos do sistema rotatório Ni-Ti em função número uso 20 blocos com canais simulados resina fenólica (Baquelite®) e 750 curvatura sendo testadas limas diferentes marcas divididas grupos: GA–Limas Twisted File® (25/.12, 25/.10, 25/.08, 25/.06, 25/.04) (n=5); GB- LimasBioRaCe®(25/.08, 15/.05, 25/.04, 35/.0...

INTRODUCTION The aim of this study was to evaluate, using cone-beam computed tomography (CBCT), transportation and centralization of different nickel-titanium (NiTi) rotary instruments. METHODS One hundred and twenty eight mandibular premolars were selected and instrumented using the following brands of NiTi files: WaveOne, WaveOne Gold, Reciproc, ProTaper Next, ProTaper Gold, Mtwo, BioRaCe a...

OBJECTIVES The aim of this study was to compare apical sealing ability of alpha and beta phases of gutta-percha by means of bacterial leakage model. MATERIALS AND METHODS Fifty single-rooted human premolars were selected. The root canals were prepared with Mtwo rotary instruments up to apical #35.04. Forty teeth were randomly divided into two groups (n= 20). The root canals were obturated by ...

INTRODUCTION The purpose of this in vitro study was to assess the amount of apically extruded debris using rotary and reciprocating nickel-titanium instrumentation systems. METHODS Eighty human mandibular central incisors were randomly assigned to 4 groups (n = 20 teeth per group). The root canals were instrumented according to the manufacturers' instructions using the 2 reciprocating single-...

PURPOSE To evaluate the cement thickness around oval and circular posts luted in oval post spaces prepared with different drills/tips. METHODS Extracted premolars were endodontically treated and obturated, then randomly divided into three groups (n = 5) according to the tips/drills used for post-space preparation and to the type of fiber post luted: medium grit oval tip + oval posts, fine gri...