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[Root canal filling after apicoectomy, as seen on the scanning electron microscope]
Deutsche Zahnarztliche Zeitschrift
|April 1, 1978
Summary
Apicectomy often fails due to chronic inflammation and poor root filling material contact. Histological analysis reveals porous materials and gaps, causing treatment failure in endodontic surgery.
Area of Science:
- Endodontic surgery
- Oral pathology
- Biomaterials science
Context:
- Apicectomy is a common endodontic surgical procedure.
- Radiological assessments frequently indicate successful outcomes.
- Histological examination reveals persistent issues despite negative radiological findings.
Purpose:
- To investigate the histological reasons for frequent apicectomy failures.
- To evaluate the interface between root canal filling materials and the root canal wall.
- To identify irritative factors contributing to treatment failure.
Summary:
- Histological examination of apicectomy sites reveals chronic inflammation, even with negative radiological findings.
- Scanning electron microscopy of zinc oxyphosphate and gutta-percha shows a porous surface and a gap between the filling and canal wall.
- The porous material, its composition, and poor adaptation are identified as key irritants leading to treatment failure.
Impact:
- Highlights the limitations of radiological assessment in evaluating apicectomy success.
- Underscores the importance of material properties and adaptation in endodontic treatments.
- Suggests potential areas for improving root canal filling materials and techniques to enhance treatment outcomes.