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Modified Continuous Wave Technique을 이용한 근관충전시 형성된 치근단 크기가 치근단 폐쇄에 미치는 영향

Other Titles
 Evaluation of the influence of apical sizes on the apical sealing ability of the modified continuous wave technique 
 류무현  ;  정일영  ;  이승종  ;  신수정  ;  김의성 
 Journal of Korean Academy of Operative Dentistry (대한치과보존학회지), Vol.33(1) : 66-75, 2008 
Journal Title
Journal of Korean Academy of Operative Dentistry(대한치과보존학회지)
Issue Date
Apical enlargement ; apical leakage ; apical size ; sealing ability
This study examined the influence of the apical sizes on the sealing ability of a root canal filling. Thirty-six single rooted teeth with a single canal were divided into 3 groups (n = 12) and instrumented with either the $Profile^®$ or $LightSpeed^®$ system to achieve three different apical sizes (master apical file [MAF] of #25, #40, or #60). The teeth were filled with gutta perch a using a modified continuous wave technique. The level of microleakage was determined by immersing ten teeth from each group into India ink for 1 week followed by clearing with nitric acid, ethyl-alcohol, and methylsalicylate. The microleakage was measured using vernier calipers. The data was analyzed statistically using Kruskal-Wallis one-way ANOVA and a Student-Newman-Keuls Method. Two teeth from each group were sectioned horizontally at 1, 2, 3 and 4 mm from the apex in order to observe a cross section. The apical size was significantly (p < .05) influenced the level of microleakage. In the Student-Newman-Deuls Method, MAF sizes of #25 and #40; and MAF sizes of #25 and #60, respectively showed a statistically significant difference. There was no significant difference between #40 and #60. In most cross sections, oval-shaped canals were observed, and the irregularity of the internal surface increased with decreasing apical size. There was also an increase in the area of recess, which is the area where the canal space is not filled with either gutta-percha or sealer. When the root canals are filled using a modified continuous wave technique, canal filling with more consistent and predictable outcome may be expected as the apical preparation size is increased
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Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Conservative Dentistry (보존과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Eui Seong(김의성) ORCID logo https://orcid.org/0000-0003-2126-4761
Shin, Su Jung(신수정) ORCID logo https://orcid.org/0000-0001-5795-3919
Lee, Seung Jong(이승종)
Jung, Il Young(정일영) ORCID logo https://orcid.org/0000-0001-8972-2664
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