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Nonvital Pulp Therapy in Primary Teeth Using Mineral Trioxide Aggregate Obturation: A Retrospective Case Series.
Tetsuhide Makiguchi1, Yoshi Terauchi2, Kingsley Wong3
1Department of Pediatric Dentistry, Tokyo Dental College, Chiyoda City, Japan, tdc.ac.jp.
Case Reports in Dentistry
|April 3, 2026
Summary
Mineral Trioxide Aggregate (MTA) pulpectomy (PE) effectively preserves infected primary teeth, promoting healing and normal successor tooth eruption. This treatment option aids in space maintenance without adverse effects on permanent teeth development.
Area of Science:
- Dentistry
- Pediatric Dentistry
- Endodontics
Background:
- Nonvital pulp therapy preserves pathologically affected primary teeth and aids in space maintenance.
- Pulpectomy (PE) is a key treatment for infected primary teeth.
Purpose of the Study:
- To examine the healing effects of mineral trioxide aggregate (MTA) obturation in infected primary teeth after pulpectomy (PE).
- To evaluate the eruption characteristics of succedaneous teeth following MTA pulpectomy.
Main Methods:
- Retrospective case series of 21 primary teeth in 17 patients undergoing PE with MTA obturation.
- Evaluation over 6 years for healing, MTA extrusion, retention, and successor tooth development.
Main Results:
- All cases showed healing or stabilization of supporting tissues without recurrent infection.
- Primary teeth were successfully replaced by unaffected permanent teeth.
- MTA did not negatively impact successor tooth eruption or enamel formation.
Conclusions:
- MTA obturation promotes healing and prolonged retention of infected primary teeth.
- MTA pulpectomy does not affect normal successor tooth eruption or enamel development.
- This treatment is a viable option for preserving primary teeth and maintaining space.
