Failure of orthograde MTA filling: MTA wash-out?

Article information

Restor Dent Endod. 2011;36(6):510-514

Publication date (electronic) : 2011 November 30

doi : https://doi.org/10.5395/JKACD.2011.36.6.510

Yuran Kim, DDS , Chan-Young Lee, DDS, PhD , Euiseoung Kim, DDS, PhD , Il-Young Jung, DDS, PhD

Department of Conservative Dentistry, Yonsei University College of Dentistry, Seoul, Korea.

Correspondence to Il-Young Jung, DDS, PhD. Professor, Department of Conservative Dentistry, Yonsei University College of Dentistry, Seoul, Korea. TEL, +82-2-2228-8700; FAX, +82-2-313-7575; juen@yuhs.ac

Received 2011 August 02; Revised 2011 September 23; Accepted 2011 September 26.

Abstract

Mineral trioxide aggregate (MTA), which was originally developed for repair of root perforations, is a biocompatible material with numerous clinical applications in endodontics. MTA must be allowed to set in the presence of moisture to optimize the material's physical and chemical properties. In the clinic, occasionally unset MTA has been detected after application of MTA on the tooth, and the reason has been unclear.

This case report presents MTA washed-out for several years after placement at the root apex as an apical plug, and discusses the reason and things to consider in clinics.

Keywords: MTA; Orthograde MTA filling; Setting

Notes

Conflict of Interest: No potential conflict of interest relevant to this article was reported.

References

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Article information Continued

Figure 1

Periapical view: pre-operative radiograph.

Figure 2

Root canal treatment and follow up.

MTA, mineral trioxide aggregate.

Figure 3

Periapical view: 6 years later.

Figure 4

Apical surgery on mandibular second premolar.

(a) Fractured root tip was seen, (b) MTA was removed with ultrasonic instrument easily. Vertical root fracture was seen on lingual side.

MTA, mineral trioxide aggregate.

Figure 5

Experiment 1.

(a) MTA was filled into polyethylene mould, (b) Specimens were placed into butyric acid solution (pH5.5) and saline for 30 days.

MTA, mineral trioxide aggregate.

Figure 6

Experiment 2.

(a, b) MTA was filled into polyethylene mould, (c, d) Specimen was placed onto fetal bovine serum, (e) Specimen was incubated under 37℃, 100% humidity for 4 days.

MTA, mineral trioxide aggregate.

Figure 7

MTA contacted with fetal bovine serum was not set.

MTA, mineral trioxide aggregate.