Comparison of the shaping ability of waveone reciprocating files with or without glide path in simulated curved S-shaped root canals

Abstract

Objectives:The aim was to compare the shaping ability of WaveOne reciprocating files with or without glide path in simulated curved S-shaped root canals.Materials and Methods:Forty ISO #15, 0.02 taper, clear resin Endo Training Bloc-S blocks were studied. The simulated curved S-shaped canals were dyed using ink, preinstrumentation images were scanned, and resin blocks were prepared and divided into Group A: PathFile and WaveOne and Group B: WaveOne. All canals were postoperatively scanned. Pre- and postoperative images were superimposed and evaluated at 12 defined measuring points. The efficacy of the systems was compared based on the amount and direction of canal transportation, centering ability, amount of material removed, and presence of canal aberrations. Mann–Whitney U-test and independent t-test were used for statistical comparison.Results:Both systems produced transportation at all levels and straightened the curved S-shaped canals. No significant differences in the amount and direction of transportation and amount of material removed were observed between the groups at each level (P > 0.05). However, Group A had significantly greater centering ability at the coronal straight zone (P = 0.018) and apical curvature (P = 0.014) levels than did Group B. Moreover, Group B showed more canal aberrations than did Group A.Conclusion:Within the limitations of the present study, the creation of a glide path with the PathFile system improved the centering ability of the WaveOne reciprocating file in the apical and straight coronal portions of the simulated curved S-shaped root canals and reduced the incidence of canal aberrations.

Comparative assessment of manual, rotary and reciprocating instruments for removal of root fillings, using stereomicroscope: An in vitro study

“…It is used with reciprocating movement with unequal clockwise and counter clockwise rotation, thereby facilitating engagement of the filling material with the first motion and dislodgement of the root filling in the second motion. 12,14 Mustafa et al in their study reported that all techniques left filling material inside the canal. Their results indicated that Wave One system group showed significantly less residual root filling material as compared to ProTaper and manual instruments.…”

“…The plastic color-coding over its handle deforms upon sterilization thereby preventing its reuse. 12 Lateral compaction technique to obturate the root canals have been used in previous studies. This technique however influences the collection of cement within the gutta-percha.…”

“…The instruments specifically designed for retreatment includes Protaper Universal Retreatment File system (PTUR) (Dentsply Maillefer, Ballaigues, Switzerland), Mani NRT-GPR (Mani, Japan) and WaveOne (Dentsply Maillefer, Ballaigues, Switzerland). 6,[12][13][14] The success rate of properly conducted root canal treatment can be as high as more than 90%. However poor obturation quality may lead to failure of endodontic treatment.…”

Comparison of the shaping ability of WaveOne Gold system with or without different glide path techniques in simulated curved S-shaped root canals

“…Rezin bloklar çalışmalarda, şekillendirme işleminin etkinliğinin karşılaştırılması amacıyla, şekillendirme işlemi öncesi ve sonrası görüntülerin çakıştırılması yöntemiyle kullanılmıştır. 10,[20][21][22][23][24] Bu blokların, sistemlerin şekillendirme sonuçlarını ve performansını değerlendirmede standart koşullar sağlamakla birlikte, mikro sertliğinin dentinden farklı olması ve şekillendirme sırasında meydana gelen ısı ile yumuşayıp aletlerin bıçak yüzeyine tutunma gibi bazı dezavantajları da vardır. 24 Bu çalışmada da kanal boyunca oluşan değişimlerin doğrudan görsel olarak karşılaştırılması amacıyla rezin blokların kullanılması tercih edilmiştir.…”

“…24 Bu çalışmada da kanal boyunca oluşan değişimlerin doğrudan görsel olarak karşılaştırılması amacıyla rezin blokların kullanılması tercih edilmiştir. Resiprokasyon yapan Ni-Ti sistemlerle şekillendirme öncesi rehber yol oluşturulmasının apikal bölgede daha merkezi şekillendirmeler meydana getirdiğini gösteren çalışmaların yanında, 23,25 rehber yol oluşturmanın merkezleme oranına 26 ya da kanalın düzleşmesine etkisi olmadığını gösteren çalışmalar da mevcuttur. Berutti ve ark.…”