SMEAR LAYER REMOVAL BY ROOT-CANAL IRRIGANTS - A COMPARATIVE SCANNING ELECTRON-MICROSCOPIC STUDY

被引:104
作者
GARBEROGLIO, R
BECCE, C
机构
[1] UNIV SIENA,SCH DENT,DEPT CONSERVAT DENT,I-53100 SIENA,ITALY
[2] OSPED GALLIERA,DEPT CONSERVAT DENT,GENOA,ITALY
来源
ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY AND ENDODONTICS | 1994年 / 78卷 / 03期
关键词
D O I
10.1016/0030-4220(94)90069-8
中图分类号
R78 [口腔科学];
学科分类号
1003 ;
摘要
The effect of six endodontic irrigants on smear layers created by hand instrumentation was evaluated in vitro in the middle and apical sections of 53 root canals. The irrigants evaluated were: 1% and 5% sodium hypochlorite, a combination of 24% phosphoric acid and 10% citric acid, 0.2%, 17%, and 3% ethylenediaminetetraacetic acid. After instrumentation and treatment with the respective irrigants, the root canal specimens were examined by scanning electron microscopy to determine the presence or absence of smear layer. The two sodium hypochlorite solutions did not remove the smear layer, even when 5% sodium hypochlorite was scrubbed on the dentinal walls. The 0.2% ethylenediaminetetraacetic acid solution was more effective than sodium hypochlorite, but it did not completely remove the smear layer, especially at the orifices of the dentinal tubules. The other three solutions effectively removed the smear layer, but no significant difference was found between them (p > 0.05). The solution of 3% ethylenediaminetetraacetic acid was as effective as phosphoric-citric acid and 17% ethylenediaminetetraacetic acid. Ethylenediaminetetraacetic acid, however, did not show the marked demineralizing effect on the dentinal walls and tubules as the acidic solution.
引用
收藏
页码:359 / 367
页数:9
相关论文
共 35 条
[1]  
AKPATA ES, 1981, J DNT RES, V61, P435
[2]   SMEAR LAYER REMOVAL WITH DIFFERENT CONCENTRATIONS OF EDTA-ETHYLENEDIAMINE MIXTURES [J].
AKTENER, BO ;
BILKAY, U .
JOURNAL OF ENDODONTICS, 1993, 19 (05) :228-231
[3]  
Baker N A, 1975, J Endod, V1, P127, DOI 10.1016/S0099-2399(75)80097-5
[4]   A SCANNING ELECTRON-MICROSCOPIC EVALUATION OF ROOT-CANAL DEBRIDEMENT USING SALINE, SODIUM-HYPOCHLORITE, AND CITRIC-ACID [J].
BAUMGARTNER, JC ;
BROWN, CM ;
MADER, CL ;
PETERS, DD ;
SHULMAN, JD .
JOURNAL OF ENDODONTICS, 1984, 10 (11) :525-531
[5]   A COMPARISON OF FIVE IRRIGATING SOLUTIONS - A SCANNING ELECTRON-MICROSCOPIC STUDY [J].
BERG, MS ;
JACOBSEN, EL ;
BEGOLE, EA ;
REMEIKIS, NA .
JOURNAL OF ENDODONTICS, 1986, 12 (05) :192-197
[6]  
BRANDT CD, 1984, MED VIROLOGY, V3, P35
[7]   EFFECTS OF VARIOUS CONDITIONERS AND CLEANING AGENTS ON PREPARED DENTIN SURFACES - SCANNING ELECTRON-MICROSCOPIC INVESTIGATION [J].
BRANNSTROM, M ;
JOHNSON, G .
JOURNAL OF PROSTHETIC DENTISTRY, 1974, 31 (04) :422-430
[8]   THE EFFECT OF EDTA-CONTAINING SURFACE-ACTIVE SOLUTIONS ON THE MORPHOLOGY OF PREPARED DENTIN - AN INVIVO STUDY [J].
BRANNSTROM, M ;
NORDENVALL, KJ ;
GLANTZ, PO .
JOURNAL OF DENTAL RESEARCH, 1980, 59 (07) :1127-1131
[9]  
BYSTROM A, 1985, Endodontics and Dental Traumatology, V1, P170
[10]   THE ANTIBACTERIAL ACTION OF SODIUM-HYPOCHLORITE AND EDTA IN 60 CASES OF ENDODONTIC THERAPY [J].
BYSTROM, A ;
SUNDQVIST, G .
INTERNATIONAL ENDODONTIC JOURNAL, 1985, 18 (01) :35-40