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Materials for retrograde filling in root canal therapy
Xiangyu Ma1,2, Chunjie Li3, Liuhe Jia2,4
1Department of Endodontics, Mianyang Hospital of TCM, Fucheng Road, Mianyang, Sichuan, China, 621000.
The Cochrane Database of Systematic Reviews
|December 20, 2016
Summary
This review found insufficient evidence to determine the best material for retrograde root fillings. More high-quality studies are needed to compare different materials for root canal therapy success.
Area of Science:
- Endodontics
- Dental Materials Science
Background:
- Root canal therapy is essential for saving damaged teeth.
- Retrograde root filling is an alternative when orthograde therapy fails.
- Various materials like MTA, IRM, and amalgam are used, but none are ideal.
Purpose of the Study:
- To evaluate the effectiveness of different retrograde filling materials in children and adults.
- To determine which material offers the best success rate for saving teeth requiring retrograde filling.
Main Methods:
- Systematic review of randomized controlled trials (RCTs).
- Searched multiple databases (Cochrane, MEDLINE, Embase, LILACS, etc.) up to September 2016.
- Included RCTs comparing different retrograde filling materials with at least 12-month follow-up.
Main Results:
- Six studies with high risk of bias were included.
- Limited evidence showed little or no difference between MTA and IRM at one year.
- Insufficient evidence exists for comparisons involving Super-EBA, resin composite, glass ionomer, and amalgam.
Conclusions:
- Current evidence is insufficient to recommend one retrograde filling material over another.
- High-quality randomized controlled trials are necessary to guide clinical practice.

