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New perspectives on radicular cysts: do they heal?
1Department of Oral Structural Biology, Centre of Dental and Oral Medicine, University of Zurich, Switzerland.
International Endodontic Journal
|May 13, 1999
Summary
Periapical lesions are often misdiagnosed as radicular cysts. True radicular cysts require surgery, while pocket cysts may heal with root canal therapy.
Area of Science:
- Oral pathology
- Endodontics
Background:
- The prevalence of radicular cysts as periapical lesions has been overestimated.
- Previous studies suggested nearly 50% of periapical lesions are radicular cysts.
Purpose of the Study:
- To clarify the actual incidence of radicular cysts among periapical lesions.
- To differentiate between periapical true cysts and periapical pocket cysts.
- To determine the clinical implications of these cyst classifications.
Main Methods:
- Review of literature on periapical lesions.
- Analysis of studies utilizing meticulous serial sectioning of periapical lesions.
- Examination of cyst classification based on epithelial lining and communication with root canals.
Main Results:
- The actual incidence of radicular cysts is approximately 15% of all periapical lesions.
- Radicular cysts are classified into two distinct types: periapical true cysts (completely epithelialized) and periapical pocket cysts (open to root canals).
Conclusions:
- Periapical pocket cysts show potential for healing with conventional root canal therapy.
- Periapical true cysts are less likely to resolve without surgical intervention, highlighting the importance of accurate diagnosis and treatment planning.