J Korean Acad Conserv Dent.  2011 Nov;36(6):510-514. 10.5395/JKACD.2011.36.6.510.

Failure of orthograde MTA filling: MTA wash-out?

• Kim Y
• Lee CY
• Kim E
• Jung IY

• KMID: 2176607
• DOI: http://doi.org/10.5395/JKACD.2011.36.6.510

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.

Keyword

MTA; Orthograde MTA filling; Setting

MeSH Terms

Aluminum Compounds
Calcium Compounds
Drug Combinations
Endodontics
Glutamates
Guanine
Oxides
Silicates
Tooth
Pemetrexed
Aluminum Compounds
Calcium Compounds
Drug Combinations
Glutamates
Guanine
Oxides
Silicates

Figure

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  Figure 1 Periapical view: pre-operative radiograph.

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  Figure 2 Root canal treatment and follow up. MTA, mineral trioxide aggregate.

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  Figure 3 Periapical view: 6 years later.

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  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.

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  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.

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  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.

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  Figure 7 MTA contacted with fetal bovine serum was not set. MTA, mineral trioxide aggregate.

Reference

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