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Published on: October 27, 2023
Histopathologic and SEM analysis of primary teeth with pulpectomy failure
Patricia Nivoloni Tannure1, Roberta Barcelos, Maristela Barbosa Portela
1Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil. patricianivoloni@yahoo.com.br
Summary
Pulpectomy failure in primary teeth is linked to technique issues and root resorption. Histopathology and scanning electron microscopy revealed microorganisms and inflammation as key factors.
Area of Science:
- Pediatric Dentistry
- Endodontics
- Dental Histopathology
Background:
- Pulpectomy is a root canal treatment for primary teeth with irreversible pulpitis.
- Treatment failures can lead to extraction and impact dental development.
- Understanding failure factors is crucial for improving outcomes.
Purpose of the Study:
- To identify factors contributing to pulpectomy failure in primary teeth.
- Utilize histopathology (HIST) and scanning electron microscopy (SEM) for detailed analysis.
Main Methods:
- Longitudinal study of 133 primary teeth over 48 months.
- Analysis of 8 failed pulpectomy teeth using HIST and SEM.
- Investigated root surfaces and apical/furcation areas.
Main Results:
- HIST revealed necrotic tissue, chronic inflammation, and external radicular resorption with Howship's lacunae.
- SEM showed significant microbial presence in apical and furcation zones.
- Howship's lacunae were evident in SEM analysis.
Conclusions:
- Pulpectomy failure is primarily associated with technique limitations.
- Morphological irregularities from external/inflammatory resorption contribute to failure.
- Microbial presence and inflammatory processes are significant findings.
