DURMUŞ ALPEREN BOZKURT, Ayşe DİLİJİN KEÇECİ

Revo-S ve Lightspeed-LSX döner sistem eğelerinin aşırı eğimli kök kanallarındaki etkinliğinin araştırılması

Amaç: Aşırı eğimli kök kanallarında iki farklı döner sistem eğeleri ile kök kanalı şekillendirme etkinliğini karşılaştırmak. Gereç ve Yöntemler: Otuz adet aşırı eğimli (38.96°±12.89°) mandibular birinci molar dişler çalışmaya dâhil edildi. Eşit olarak iki gruba ayrılan dişlerin çalışma boyu ve kanal devamlılığı tespit edildi. Düşük hızlı testere yardımı ile dişlerin apikal, orta ve koronal seviyelerinden kesitler alındı. Şekillendirme sırasında mufla sisteminden faydalanıldı. Kesitlerden dijital görüntüler şekillendirme öncesi ve sonrasında stereo mikroskop (x40) ile alındı. Mufla sistemine sırasıyla yerleştirilmiş olan kesitlerde Revo-S ve Lightspeed-LSX eğeleri ile apikal genişlik 40 olacak şekilde genişletildi. Merkezde kalma oranı, şekillendirilmiş alan, şekillendirilmemiş alan ve transportasyon dijital görüntülerin öncesi ve sonrasında üst üste monte edilerek ölçüldü. Bağımsız t testi, One-way ANOVA ve post-hoc Tukey testi uygulanmıştır (P

Analysis of preparation performance of Revo-S vs Lightspeed-LSX in severely curved root canals

Background: The aim of this study to compare the preparation performance of two different rotary systems in severe curved mandibular root canals. Methods: Thirty mandibular first molars with severe curved (38.96°±12.89° ) mesial root canals were selected for this study. Teeth were divided into equal two groups following determination of apical patency and working length. A muffle system was used during the preparation. Cross sections of the specimens were obtained in apical, middle and coronal levels using a low-speed saw. Digital images were taken from the sections under stereomicroscope (x40) before and after preparation. Root canal preparations were made after fitting the sections in the muffle according to Manufacturer’s using Revo-S and Lightspeed-LSX to an apical size 40. Centering ratio, prepared area, unprepared surfaces and transportation were measured on the superimposed pre-and postoperative images. Independent t test, One-way ANOVA and Tukey HSD test was used (p

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1. Setzer FC, Kwon T-K, Karabucak B. Comparison of apical transportation between two rotary file systems and two hybrid rotary instrumentation sequences. J Endod 2010; 36: 1226-9.
2. Card SJ, Sigurdsson A, Ørstavik D, Trope M. The effectiveness of increased apical enlargement in reducing intracanal bacteria. J Endod 2002; 28: 779-83.
3. McGurkin-Smith R, Trope M, Caplan D, Sigurdsson A. Reduction of intracanal bacteria using GT rotary instrumentation, 5.25% NaOCl, EDTA, and Ca (OH) 2. J Endod 2005; 31: 359-63.
4. Short JA, Morgan LA, Baumgartner JC. A comparison of canal centering ability of four instrumentation techniques. J Endod 1997; 23: 503-7.
5. Al-Sudani D, Al-Shahrani S. A comparison of the canal centering ability of ProFile, K3, and RaCe Nickel Titanium rotary systems. J Endod 2006; 32: 1198-201.
6. Kyaw Moe MM, Ha JH, Jin MU, Kim YK, Kim SK. Root Canal Shaping Effect of Instruments with Offset Mass of Rotation in the Mandibular First Molar: A Micro– computed Tomographic Study. J Endod 2018; 44: 822-
7. Marending M, Schicht O, Paqué F. Initial apical fit of K‐ files versus LightSpeed LSX instruments assessed by micro‐computed tomography. Int Endod J 2012; 45: 169-76.
8. Arora A, Taneja S, Kumar M. Comparative evaluation of shaping ability of different rotary NiTi instruments in curved canals using CBCT. J Conserv Dent 2014; 17: 35.
9. Bürklein S, Börjes L, Schäfer E. Comparison of preparation of curved root canals with H yflex CM and R evo‐S rotary nickel–titanium instruments. Int Endod J 2014; 47: 470-6.
10.Çelik D, Taşdemir T, Er K. Comparative study of 6 rotary nickel-titanium systems and hand instrumentation for root canal preparation in severely curved root canals of extracted teeth. J Endod 2013; 39: 278-82.
11.Deepak J, Ashish M, Patil N, Kadam N, Yadav V, Jagdale H. Shaping Ability of 5 (th) Generation Ni-Ti Rotary Systems for Root Canal Preparation in Curved Root Canals using CBCT: An In Vitro Study. J Int Oral Health 2015; 7: 57-61.
12.Schneider SW. A comparison of canal preparations in straight and curved root canals. Oral Surg Oral Med Oral Pathol 1971; 32: 271-5.
13.Bramante CM, Berbert A, Borges RP. A methodology for evaluation of root canal instrumentation. J Endod 1987; 13: 243-5.
14.Calhoun G, Montgomery S. The effects of four instrumentation techniques on root canal shape. J Endod 1988; 14: 273-7.
15.Gluskin A, Brown D, Buchanan L. A reconstructed computerized tomographic comparison of Ni–Ti rotary GT™ files versus traditional instruments in canals shaped by novice operators. Int Endod J 2001; 34: 476- 84.
16.Wu M-K, Fan B, Wesselink PR. Leakage along apical root fillings in curved root canals. Part I: effects of apical transportation on seal of root fillings. J Endod 2000; 26: 210-6.
17..Wu M-K, Fan B, Wesselink PR. Leakage along apical root fillings in curved root canals. Part I: effects of apical transportation on seal of root fillings. J Endod 2000; 26: 210-6.
17.Knowles KI, Ibarrola JL, Christiansen RK. Assessing apical deformation and transportation following the use of LightSpeed root-canal instruments. Int Endod J 1996; 29: 113-7. 18.Portenier I, Lutz F, Barbakow F. Preparation of the apical part of the root canal by the Lightspeed and step-back techniques. Int Endod J 1998; 31: 103- 11.
19.Peters OA, Schonenberger K, Laib A. Effects of four Ni-Ti preparation techniques on root canal geometry assessed by micro computed tomography. Int Endod J 2001; 34: 221-30.
20.Glosson CR, Haller RH, Dove SB, Delrio CE. A Comparison of Root-Canal Preparations Using NiTi Hand, Ni-Ti Engine-Driven, and K-Flex Endodontic Instruments. J Endod 1995; 21: 146- 51.
21.Hulsmann M, Herbst U, Schafers F. Comparative study of root-canal preparation using Lightspeed and Quantec SC rotary NiTi instruments. Int Endod J 2003; 36: 748-56.
22.Versumer J, Hulsmann M, Schafers F. A comparative study of root canal preparation using Profile.04 and Lightspeed rotary Ni-Ti instruments. Int Endod J 2002; 35: 37-46.
23.Basrani B, Roth K, Sas G, Kishen A, Peters OA. Torsional profiles of new and used Revo-S rotary instruments: an in vitro study. J Endod 2011; 37: 989-92.
24.Hashem AAR, Ghoneim AG, Lutfy RA, Foda MY, Omar GAF. Geometric analysis of root canals prepared by four rotary NiTi shaping systems. J Endod 2012; 38: 996-1000.
25.Elsherief SM, Zayet MK, Hamouda IM. Cone-beam computed tomography analysis of curved root canals after mechanical preparation with three nickel-titanium rotary instruments. J Biomed Res 2013; 27: 326.
26.Vallaeys K, Chevalier V, Arbab-Chirani R. Comparative analysis of canal transportation and centring ability of three Ni–Ti rotary endodontic systems: Protaper®, MTwo® and Revo-S™, assessed by micro-computed tomography. Odontology 2016; 104: 83-8.