Restorative Dentistry and Endodontics

The Korean Academy of Conservative Dentistry (대한치과보존학회)
권호 표지
DOI QR코드

DOI QR Code

A SEM OBSERVATION ON THE EFFICIENCY PREPARATION OF OVAL CANALS USING HAND AND ENGINE-DRIVEN INSTRUMENTS

수동과 엔진구동형 기구를 이용한 난원형 근관의 형성에 관한 주사전자현미경적 관찰

  • Song, Uk (Department of Conservative Dentistry, College of Dentistry, Pusan National University) ;
  • Hur, Bock (Department of Conservative Dentistry, College of Dentistry, Pusan National University) ;
  • Lee, Hee-Joo (Department of Conservative Dentistry, College of Dentistry, Pusan National University)
  • 송욱 (부산대학교 치과대학 보존학교실) ;
  • 허복 (부산대학교 치과대학 보존학교실) ;
  • 이희주 (부산대학교 치과대학 보존학교실)
  • Published : 2004.03.01
Download PDF
⟨ Previous Next ⟩

Abstract

The purpose of this study was to evaluate the efficiency of the preparation of oval canals using hand and engine-driven instruments with SEM observation. Thirty single-rooted teeth with oval canal were used in this study. The teeth were divided into 3 groups. In group A the teeth were instrumented up to a size 35 K-file using RC-prep and irrigated with 5% NaOCl between each file size. In group B. the teeth were instrumented with Profile according to the manufacture's instructions using RC-Prep and irrigated with 5% NaOCl between each file size. In group C. the teeth were instrumented with GT file according to the manufacture's instructions using RC-prep and irrigated with 5% NaOCl between each file size. Then. in all teeth. a final flush of 5ml of distilled water delivered for 30s. Canals were dried with sterile standardized paper points. After preparing the canals, the teeth were sectioned along their mesial and diatal surfaces by using low-speed diamond disc. chisel and mallet. Each root section was then dehydrated in graded concentration of alcohol (70, 80, 90, 100%). mounted on an aluminum stub. sputter-coated with gold-palladium and observed with scanning electron microscope (HITACHI S-4200) in middle and apical area. The results of this study were as follows: 1. In the middle area. group B and group C showed less smear layer than group A and it was statistically significant (p < 0.05). 2. In the middle area. group B showed greater smear layer than group C. but it was not statistically significant (p > 0.05). 3. In the apical area, group C showed less smear layer than group A. and it was statistically significant (p < 0.05). 4. In the apical area. group A showed greater smear layer than group B. but it was not statistically significant (p > 0.05). 5. In the apical area. group B showed greater smear layer than group C. but it was not statistically significant (p > 0.05). 6. In all groups. the middle area was less smear layer than the apical area. and it was statistically significant (p < 0.05).

Keywords

References

  1. Esposito PT, Cunningham CJ. A comparison of preparation nickel titanium and stainless steel instruments. Int Endod J 21:173 176. 1995 https://doi.org/10.1016/S0099-2399(06)80560-1
  2. Wu MK Wasselink PR, A primary observation on the preparation and obturation of oval canals. Int Endod J 34:137 141, 2001 https://doi.org/10.1046/j.1365-2591.2001.00361.x
  3. Roland W, Ashraf E, Claus L. Efficacy of hand and rotary instruments in shaping oval root canals. J Endod 28:580-583, 2002. https://doi.org/10.1097/00004770-200208000-00004
  4. Walton RE, Histologic evaluation of different methods of enlarging the pulp canal space. J Endod 2:304 311, 1976 https://doi.org/10.1016/S0099-2399(76)80045-3
  5. Siqueira JF, Araujo MC, Garcia PF, Fraga RC. Histological evaluation of the effectiveness of five instrumentation technique for cleanig the apical third of root canals. J Endod 23:499 502, 1997 https://doi.org/10.1016/S0099-2399(97)80309-3
  6. Joao V, Luis F, Effectiveness of manual and rotary instrumentation technique for cleaning flattened root canal. J Endod 28:365 366, 2002 https://doi.org/10.1097/00004770-200205000-00004
  7. Bechelli C, Colafranceschi M, Scanning electron micro scope study the efficacy of root canal wall debridement of hand versus Lighrspeed instrument, Int Endod J 34: 137 141, 2001 https://doi.org/10.1046/j.1365-2591.2001.00361.x
  8. Gutmann JL, Saunders WP, Nguyen L, Guo IY, Saunders EM. Ultrasonic root end preparation Part 1. SEM analysis. Int Endod J 27:318 324, 1994 https://doi.org/10.1111/j.1365-2591.1994.tb00276.x
  9. Cohen S, Burns PC, Pathway of the pulp. 7th ed. St. Louis, CV Mosby
  10. McComb D, Smith DC, A primary scanning electron microscope study of root canal after endodontic proce dores. J Endod 1:238 242, 1975 https://doi.org/10.1016/S0099-2399(75)80226-3
  11. Walton R. Torabinejad M. Principle and practice of endodontics. 2nd ed. Philadelphia, 212 214, 1996
  12. Brannstrom M, Nordenvall KJ, Glanz PO, The effect of EDTA containing surface active solutions on the morphology of prepared dentin: an vivo study. J Dent Res 59: 1127 1131. 1980 https://doi.org/10.1177/00220345800590070501
  13. Aktener BO, Cengiz T, Piskin B, The penetration of smear layer material into dentinal tubules during instrumentation with surface active reagents: a scanning electron micrpscpe study. J Endod 15:588 590, 1989 https://doi.org/10.1016/S0099-2399(89)80156-6
  14. Mader CL, Baumgartner JC , Peters DD. Scanning electron microscopic investigation of smeared layer on root canal walls. J Endod 10:477 483, 1984 https://doi.org/10.1016/S0099-2399(84)80204-6
  15. Williams S, Goldman M, Penetrability of the smeared layer by strain of proteus vulgaris. J Endod 11:385 388. 1985 https://doi.org/10.1016/S0099-2399(85)80026-1
  16. Dippel H, Borggreven J , Happenbrouvers P, Morphology and permeability of the dentin smear layer. J Prosthet Dent 52:657 662. 1984 https://doi.org/10.1016/0022-3913(84)90137-9
  17. Akpata ES, Blechman H, Bacterial invasion of pulpar dentin wall in vitro. J Dent Res 61 :435 438 ,1982 https://doi.org/10.1177/00220345820610021401
  18. Nissan R, Sehal H, Pashley DH, Trowbridge H. Ability of bacterial endotoxin to permeate human dentin. J Dent Res 92:127,1993
  19. Brannstrom M, Nyborg H, Bacterial growth and pulpal changes under inlays cemented with zinc phosphate and epoxylate CBA9080. J Prosthet Dent 31:556 565, 1974 https://doi.org/10.1016/0022-3913(74)90177-2
  20. Gencoglu N, Samni S, Gunday M, Evalutation of sealing properties of Thermafil and Ultrafil techniques in the abscence or presence of smear layer. J Endod 19:599 603, 1993 https://doi.org/10.1016/S0099-2399(06)80273-6
  21. Karagoz Kucukay I, Bayirli G. An apical leakage study in the presence and abscence of smear layer. Int Endod J 27:87 93, 1994 https://doi.org/10.1111/j.1365-2591.1994.tb00236.x
  22. Kennedy WA, Walker WA, Gough RW. Smear layer removal effect on apical on apical leakage. J Endod 12:21 27, 1986 https://doi.org/10.1016/S0099-2399(86)80277-1
  23. Cergneux M, Ciucchi B, Dietschi JM, Holz J. The influence of smear layer on the sealing ability of canal obturation. Int Endod J 20:228 232, 1987 https://doi.org/10.1111/j.1365-2591.1987.tb00619.x
  24. Baumgarther JC , Mader CL, A scanning electron microscopic evaluation of four root canal irrigation reg imens. J Endod 13:147 157, 1987 https://doi.org/10.1016/S0099-2399(87)80132-2
  25. Grossman LI, Melman B, Solution of pulp tissue by chemical agents. J Am Dent Assoc 28:223, 1941
  26. Weine FS. Endodontic therapy, 5th ed. St, Lous, Mosby, 1996
  27. Hulsmann M, Rummelin C, Schafers F, Root canal cleanliness after preparation with different endodontic handpiece and hand instruments: a comparative SEM investigation. J Endod 23:301 306, 1997 https://doi.org/10.1016/S0099-2399(97)80410-4
  28. Heard F , Walton RE, Scanning electron microscope study comparing four root canals preparation techniques in small curved canals. Int Endod J 30:323 331. 1997 https://doi.org/10.1046/j.1365-2591.1997.00090.x
  29. Bertrand M, Pizzaardini P, The removal of the smear layer using the Quantec system, A study using the scanning electron microscope. Int Endod J 32:217 224, 1999 https://doi.org/10.1046/j.1365-2591.1999.00231.x
  30. Alacam T. Scanning electron microscope study comparing the efficacy of endodontic irrigating systems. Int Endod J 20:287 294, 1987 https://doi.org/10.1111/j.1365-2591.1987.tb00629.x
  31. Ciucchi B, Khettabi M, Holz J. The effectiveness of different endodontic irrigation procedures on the removal of the smear layer: a scanning electron microscopic study. Int Endod J 22:21 28, 1989 https://doi.org/10.1111/j.1365-2591.1989.tb00501.x
  32. Peters O, Barbakow F, Effects of irrigation on debris and smear layer on canal walls prepared by two rotary techniques: A scanning electron microscopic study. J Endod 26:6 10, 2000 https://doi.org/10.1097/00004770-200001000-00002
  33. Gambarini G, Laszkiewicz J. A scanning electron microscopic study of debris and smear layer remaining following use of GT rotary instruments. Int Endod J 35 :422 427 , 2002 https://doi.org/10.1046/j.1365-2591.2002.00495.x