Journal of Dental Rehabilitation and Applied Science (구강회복응용과학지)

Korean Academy of Stomatognathic Function and Occlusion (대한턱관절교합학회)
권호 표지

The Evaluation of RPM Change in X-Smart According to Power Source: Endodontic Wireless Electronic Motor

근관치료용 무선전기모터인 X-Smart의 전원의 종류에 따른 RPM 변화의 평가

  • Park, Se-Hee (Department of Conservative Dentistry, College of Dentistry, Gangneung-Wonju National University) ;
  • Jeong, Dong-Bin (Department of Information Statistics, College of Natural Sciences, Gangneung-Wonju National University) ;
  • Cho, Kyung-Mo (Department of Conservative Dentistry, College of Dentistry, Gangneung-Wonju National University) ;
  • Kim, Jin-Woo (Department of Conservative Dentistry, College of Dentistry, Gangneung-Wonju National University)
  • 박세희 (강릉원주대학교 치과대학 치의학과) ;
  • 정동빈 (강릉원주대학교 자연과학대학 정보통계학과) ;
  • 조경모 (강릉원주대학교 치과대학 치의학과) ;
  • 김진우 (강릉원주대학교 치과대학 치의학과)
  • Received : 2010.12.20
  • Accepted : 2011.03.25
  • Published : 2011.03.30
Download PDF
⟨ Previous Next ⟩

Abstract

The purpose of this study was to evaluate RPM maintenance in X-Smart according to the power supplied by the AC adapter and rechargeable battery. Five new X-Smart were used in this study. A handpiece with rubber disk which has reflective tape was mounted on the vice. To measure the RPM, a non-contact type digital tachometer was used. RPM measurements were recorded every 5 minutes to 180 minutes and repeated 3 times per motor from each power source. To evaluate a difference of the RPM changes, two-way repeated measures were performed using $SPSS^{TM}$ 14.0. All tests were conducted at the 95 percent confidence level. There was no significant difference in the RPM change between the power sources. Continuous use of X-Smart with a rechargeable battery for up to 180 minutes could be safely used as an endodontic wireless motor with a reliable RPM maintenance.

본 연구의 목적은 근관치료용 무선전기모터인 X-Smart의 지속적인 사용 시, 배터리전원과 AC 어댑터 전원일 때의 RPM의 유지를 평가하고자 하였다. X-Smart (Dentsply Maillefer, Ballaigues, Switzerland) 신품 5대를 사용하였다. 본체에 연결한 핸드피스를 바이스에 고정하고, RPM의 측정을 위한 반사지를 붙인 Disk를 장착하였다. 비접촉식 RPM측정기인 TM-5000을 사용하여 RPM을 측정하였다. 배터리 전원시의 RPM과 AC 어댑터 전원시의 RPM을 5분마다 180분에 걸쳐 측정하였고 각 전기모터마다 3회씩 반복하였다. $SPSS^{TM}$ 14.0을 이용하여 2요인 반복측정분석을 통해 각 전원별 전기모터에 따른 RPM 변화량과 전원의 종류에 따른 RPM 변화량의 상관관계를 95% 유의 수준에서 비교하였다. 전원의 종류와 관계없이 같은 전원에서 각 기기별 RPM 변화량은 유의한 차이를 보이지 않았고, 전원의 종류에 따른 RPM 변화량의 차이는 90분 이후의 측정치에서 점진적으로 증대되는 것이 관찰되어지나 통계학적으로 유의한 차이는 보이지 않았다. 이상의 결과로, 배터리 전원의 무선전기모터로서의 X-Smart를 180분 이내로 연속사용 한다면, 신뢰성 있는 RPM 유지를 얻어 안전한 임상사용이 가능하리라 생각된다.

Keywords

References

  1. Mounce R. The heartache of separation. Dent Today 2003;22;83-5.
  2. Pruett JP, Clement DJ, Carnes DL Jr. Cyclic fatigue testing of nickel titanium endodontic instruments. J Endod 1997;23:77-85. https://doi.org/10.1016/S0099-2399(97)80250-6
  3. Ramirez-Salomon M, Soler-Bientz R, de la Garza-Gonzalez R, Palacios-Garza CM. Incidence of Lightspeed separation and the potential for bypassing. J Endod 1997;23:586-7. https://doi.org/10.1016/S0099-2399(06)81128-3
  4. Bryant ST, Thompson SA, Al-Omari M, Dummer PMH. Shaping ability of ProFile rotary nickel-titanium instruments with ISO sized tips in simulated root canals. Part 1. Int Endod J 1998;31:275-81.
  5. Barbakow F, Lutz F. The Lightspeed preparation technique evaluated by Swiss clinicians after attending continuing education courses. Int Endod J 1997;30:46-50. https://doi.org/10.1111/j.1365-2591.1997.tb01097.x
  6. Mandel E, Adib-Yazdi M, Benhamou L-M, Lachkar T, Mesgouez C, Sobel M. Rotary Ni-Ti ProFile systems for preparing curved canals in resin blocks: influence of operator on instrument breakage. Int Endod J 1999;32:436-43. https://doi.org/10.1046/j.1365-2591.1999.00239.x
  7. Yared GM, Bou Dagher FE, Machtou P. Influence of rotational speed, torque, and operator's proficiency on ProFile failures. Int Endod J 2001;34:47-53. https://doi.org/10.1046/j.1365-2591.2001.00352.x
  8. Gabel WP, Hoen M, Steiman HR, Pink FE, Dietz R. Effect of rotational speed on nickel-titanium file distortion. J Endod 1999;25:752-4. https://doi.org/10.1016/S0099-2399(99)80124-1
  9. Yared GM, Bou Dagher FE, Machtou P, Kulkarni GK. Influence of rotational speed, torque and operator proficiency on failure of Greater Taper files. Int Endod J 2002;35:7-12. https://doi.org/10.1046/j.1365-2591.2002.00443.x
  10. Gambarini G. Cyclic fatigue of nickel-titanium rotary instruments after clinical use with low- and high-torque endodontic motors. J Endod 2001;27:772-4. https://doi.org/10.1097/00004770-200112000-00015
  11. Yared G, Sleiman P. Failure of ProFile instruments with air, high torque control and low torque control motors. Int Endod J 2001;34:471-5. https://doi.org/10.1046/j.1365-2591.2001.00420.x
  12. Gambarini G. Cyclic fatigue of ProFile rotary instruments after prolonged clinical use. Int Endod J 2001;34:386-9. https://doi.org/10.1046/j.1365-2591.2001.00259.x
  13. Yared GM, Bou Dagher FE, Machtou P. Cyclic fatigue of Profile rotary instruments after simulated clinical use. Int Endod J 1999;32:115-9. https://doi.org/10.1046/j.1365-2591.1999.00201.x
  14. Yared GM, Bou Dagher FE, Machtou P. Cyclic fatigue of Profile rotary instruments after clinical use. Int Endod J 2000;33:204-7. https://doi.org/10.1046/j.1365-2591.1999.00296.x
  15. Blum JY, Machtou P, Micallef JP. Location of contact areas on rotary Profile instruments in relationship to the forces developed during mechanical preparation on extracted teeth. Int Endod J 1999;32:108-14. https://doi.org/10.1046/j.1365-2591.1999.00200.x
  16. Thompson SA, Dummer PM. Shaping ability of ProFile .04 Taper Series 29 rotary nickel-titanium instruments in simulated root canals. Part 2. Int Endod J 1997;30:8-15. https://doi.org/10.1111/j.1365-2591.1997.tb01092.x
  17. Thompson SA, Dummer PM. Shaping ability of Quantec Series 2000 rotary nickel-titanium instruments in simulated root canals. Part 1. Int Endod J 1998;31:259-67.
  18. Cohen S, Burns RC. Pathways of the pulp. 8th ed. St. Louis: Mosby-Year Book, Inc., 2002:533-4.
  19. Yared GM, Bou Dagher FE, Kulkarni GK. Influence of torque control motors and the operator' proficiency on ProTaper failures. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2003;96:229-33. https://doi.org/10.1016/S1079-2104(03)00167-7
  20. Berutti E, Negro AR, Lendini M, Pasqualini D. Influence of manual preflaring and torque on the failure rate of ProTaper rotary instruments. J Endod 2004;30:228-30. https://doi.org/10.1097/00004770-200404000-00011
  21. Bahia MGA, Martins RC, Gonzalez BM, Buono VTL. Physical and mechanical characterization and the influence of cyclic loading on the behavior of nickel-titanium wires employed in the manufacture of rotary endodontic instruments. Int Endod J 2005;38:795-801. https://doi.org/10.1111/j.1365-2591.2005.01016.x
  22. Li UM, Lee BS, Shih CT, Lan WH, Lin CP. Cyclic fatigue of endodontic nickel-titanium rotary instruments: static and dynamic tests. J Endod 2002;28:448-51. https://doi.org/10.1097/00004770-200206000-00007
  23. Zelada G, Varela P, Martn B, Bahllo JG, Magn F, Ahn S. The effect of rotational speed and the curvature of root canals on the breakage of rotary endodontic instruments. J Endod 2002;28:540-2. https://doi.org/10.1097/00004770-200207000-00014
  24. Martn B, Zelada G, Varela P, et al. Factors influencing the fracture of nickel-titanium rotary instruments. Int Endod J 2003;36:262-6. https://doi.org/10.1046/j.1365-2591.2003.00630.x
  25. Dietz DB, Di Fiore PM, Bahcall JK, Lautenschlager EP. Effect of rotational speed on the breakage of nickel-titanium rotary files. J Endod 1998;26:68-71.
  26. Poulsen WB, Dove SB, Del Rio CE. Effect of nickel-titanium engine driven instrument rotational speed on root canal morphology. J Endod 1995;21:609-12. https://doi.org/10.1016/S0099-2399(06)81113-1
  27. Petka K, Implementing one-visit root canal therapy. Dent Today 1998;17:112-7
  28. Operation manual of X-Smart. Dentsply 2006;22
  29. Kobayashi C, Yoshioka T, Suda H. A new engine-driven canal preparation system with electronic canal measuring capability. J Endod 1997;23:751-4. https://doi.org/10.1016/S0099-2399(97)80349-4