Comparison of apical debris extrusion using clockwise and counter‐clockwise single‐file reciprocation of rotary and reciprocating systems

Abstract

The aim was to evaluate apical debris extrusion produced by a single-file system used in counter-clockwise reciprocation and compare it to rotary singlefile systems used in clockwise rotation and clockwise reciprocation. A total of 100 first mandibular molars were divided into five groups (n = 20): (i) WaveOne Gold Glider and Primary instrument in counter-clockwise reciprocation; (ii) One G and One Curve file in clockwise rotation; (iii) One G and One Curve file in clockwise reciprocation; (iv) TruNatomy Glider and Prime instrument in clockwise rotation; and (v) TruNatomy Glider and Prime instrument in clockwise reciprocation. Apical debris extruded was measured after glide path preparation and canal preparation. WaveOne Gold displayed significantly higher amounts of apical debris extrusion in all the groups (P < 0.05). The lowest mean values were recorded by clockwise reciprocation groups: TruNatomy Glider, One Curve and TruNatomy Glider and Prime combined value, for glide path, canal preparation and combined mean values, respectively.

Quantitative evaluation of apically extruded debris using TRUShape, TruNatomy, and WaveOne Gold in curved canals

“…These results have been confirmed previously as the decreased debris extrusion of reciprocating systems was credited to the balanced force and pressure-less mechanics [ 19 , 28 ]. Predin Djuric et al [ 29 ] when comparing apical debris extrusion produced by a single-file system used in counter-clockwise reciprocation, clockwise rotation, and clockwise reciprocation, the lowest mean values were recorded by clockwise reciprocation groups.…”

Apical debris extrusion of full‐sequenced rotary systems in narrow ribbon‐shaped canals

“…TruNatomy which is a very popular and novel system has been evaluated in the recent studies regarding the apical debris extrusion (17, 18). Predin Djuric et al.…”

“…Predin Djuric et al. compared the apical debris extrusion using clockwise and counter‐clockwise single‐file reciprocation of rotary and reciprocating systems and reported that TRN used with its glide path in clockwise reciprocation motion caused less apical debris extrusion (18). In another study, where the apical debris extrusion of 5 nickel titanium rotary systems (TRN, Reciproc Blue, Hyflex, Hyflex EDM and Protaper Next) was examined in severely curved root canals, it was notified that TRN system caused least debris extrusion (17).…”

“…Although NaOCl is one of the best and most widely used antibacterial irrigation solutions during root canal treatment, recent debris extrusion studies generally used distilled water instead of NaOCl (17, 18, 28, 29). The main reason for this choice is that NaOCl is not a sterile solution and contains sodium hydroxide ingredients (30).…”

“…Although there are so many studies in the literature about the apical debris extrusion caused by different endodontic systems (12‐18), there is no study about RACE EVO system on this subject. A ribbon‐shaped root canal can also create an anatomical challenge and change the amount of debris pushed out apically.…”