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Root canal treatment of traumatized permanent teeth with external root resorption

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Title: Root canal treatment of traumatized permanent teeth with external root resorption
Authors: Yawaka, Yasutaka Browse this author →KAKEN DB
Toyota, Yuki Browse this author
Hisada, Akina Browse this author
Maeda, Ayako Browse this author
Inoue, Shohei Browse this author
Yoshihara, Toshihiro Browse this author →KAKEN DB
Keywords: dental trauma
replanted tooth
external root resorption
calcium hydroxide
smear layer
Issue Date: Sep-2017
Publisher: 北海道歯学会
Journal Title: 北海道歯学雑誌
Volume: 38
Issue: Special issue
Start Page: 122
End Page: 129
Abstract: External root resorption is an important challenge in the preservation of traumatized teeth. External root resorption is observed in cases of replanted teeth from dental trauma. Root canal dressing containing calcium hydroxide (Ca(OH)2) is one recommended clinical approach for external root resorption treatment. However, complete control of external resorption may not be possible due to certain factors, such as the smear layer, which is formed by reaming and filing during root canal treatments. The smear layer plugs dentinal tubules and inhibits the effects of Ca(OH)2 as a root canal dressing material. Our study showed that root canal irrigation with ethylenediaminetetraacetic acid (EDTA) and sodium hypochlorite (NaOCl) with an ultrasonic device is the most effective method to remove the smear layer. Additionally, we observed an alkaline environment at the outer root surface due to ion diffusion from Ca(OH)2 following this treatment. As a result, the combined use of EDTA and NaOCl with an ultrasonic device for root canal irrigation led to good control of external root resorption.
Type: article
Appears in Collections:北海道歯学雑誌 > 第38巻 記念特集号

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