Long-term observation of the mineral trioxide aggregate extrusion into the periapical lesion:a case series  

作　　者：Seok-Woo Chang Tae-Seok Oh WooCheol Lee Gary Shun-Pan Cheung Hyeon-Cheol Kim 

机构地区：[1]Department of Conservative Dentistry,School of Dentistry,Kyung Hee University [2]Department of Conservative Dentistry,The Institute of Oral Health Science,Samsung Medical Center,Sungkyunkwan University School of Medicine [3]Department of Conservative Dentistry,School of Dentistry,Dental Research Institute,Seoul National University [4]Area of Endodontics,Faculty of Dentistry,the University of Hong Kong [5]Department of Conservative Dentistry,School of Dentistry,Pusan National University,Dental Research Institute

出　　处：《International Journal of Oral Science》2013年第1期54-57,共4页国际口腔科学杂志（英文版）

基　　金：supported by the National Research Foundation(NRF) of Korea;funded by the Ministry of Education,Science and Technology(MEST) (No.2011-0014231,Dr.Seok-Wood Chang),Korea

摘　　要：One-step apexification using mineral trioxide aggregate(MTA) has been reported as an alternative treatment modality with more benefits than the use of long-term calcium hydroxide for teeth with open apex.However,orthograde placement of MTA is a challenging procedure in terms of length control.This case series describes the sequence of events following apical extrusion of MTA into the periapical area during a one-step apexification procedure for maxillary central incisor with an infected immature apex.Detailed long-term observation revealed complete resolution of the periapical radiolucent lesion around the extruded MTA.These cases revealed that direct contact with MTA had no negative effects on healing of the periapical tissues.However,intentional MTA overfilling into the periapical lesion is not to be recommended.One-step apexification using mineral trioxide aggregate （MTA） has been reported as an alternative treatment modality with more benefits than the use of long-term calcium hydroxide for teeth with open apex. However, orthograde placement of MTA is a challenging procedure in terms of length control. This case series describes the sequence of events following apical extrusion of MTA into the periapical area during a one-step apexification procedure for maxillary central incisor with an infected immature apex. Detailed long-term observation revealed complete resolution of the periapical radiolucent lesion around the extruded MTA. These cases revealed that direct contact with MTA had no negative effects on healing of the periapical tissues. However, intentional MTA overfilling into the periapical lesion is not to be recommended.

关 键 词：EXTRUSION immature apex mineral trioxide aggregate one-step apexification open apex periapical healing 

分 类 号：R781.34[医药卫生—口腔医学]