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Lasers in Medical Science

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20.07.2022 | Original Article

Comparison of Er:YAG laser and ultrasonic in root canal disinfection under minimally invasive access cavity

verfasst von: XiaoYang Shan, FuCong Tian, Jing Li, Nan Yang, YueYue Wang, HuiBin Sun

Erschienen in: Lasers in Medical Science | Ausgabe 8/2022

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Abstract

The disinfection of root canal through minimally invasive access cavity remains questionable. This in vitro study compared the effectiveness of three disinfection measures including conventional irrigation, ultrasonic assisted irrigation, and erbium:yttrium–aluminum-garnet (Er:YAG) laser assisted irrigation through conventionally or minimally invasive access. Sixty-six extracted maxillary first molars were randomly divided into group 1 conventionally invasive access group (CIA) and group 2 computer-guided minimally invasive access group (MIA). Each group was further randomly divided into three subgroups, (A) conventional irrigation (CI), (B) passive ultrasonic agitation (PUI), and (C) Er:YAG laser activated irrigation (LAI). Enterococcus faecalis (E. faecalis) infection model was established inside all root canals after instrumentation was performed up to ProTaper Universal F2. After various disinfection methods, microbial samples were collected from root canals by paper tip method and cultured, and colony forming units (CFU) values of each sample were calculated. Then the root canals were enlarged to the size of F3, after which dentin debris was collected from the F3 file. After dilution and culturing, the CFU value was calculated for each group. Two-way analysis of variance (ANOVA) was performed to test the interaction. The results revealed a significant antagonism (F = 3.394, P = 0.043). The bacterial CFU counts of group B and group C were significantly less than that of group A (P < 0.05), and there was no significant difference between group B and C (P > 0.05). Additionally, group 2A was better than group 1A (P < 0.05); there was no significant difference between group 1B and group 2B, group 1C and group 2C (P > 0.05). Comparison of the bacterial CFU counts in dentin debris after disinfection, the results revealed a significant antagonism (F = 7.224, P = 0.002), and group C had the least. The disinfection effect of Er:YAG laser or ultrasonic assisted computer-guided minimally invasive access is similar to conventionally invasive access, and Er:YAG laser is better than ultrasonic in removing bacteria from dentinal tubules and is easy to operate, which is more suitable for minimally invasive root canal treatment.

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Titel: Comparison of Er:YAG laser and ultrasonic in root canal disinfection under minimally invasive access cavity
verfasst von: XiaoYang Shan
FuCong Tian
Jing Li
Nan Yang
YueYue Wang
HuiBin Sun
Publikationsdatum: 20.07.2022
Verlag: Springer London
Erschienen in: Lasers in Medical Science / Ausgabe 8/2022
Print ISSN: 0268-8921
Elektronische ISSN: 1435-604X
DOI: https://doi.org/10.1007/s10103-022-03613-0

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Comparison of Er:YAG laser and ultrasonic in root canal disinfection under minimally invasive access cavity

Abstract

Live-Webinar "Urologie und Sexualmedizin in der Praxis"

Springer Medizin

Abstract

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