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Diffusion of medicaments within root canal dentin. A scanning electron microscopic study
J H Gutiérrez1, E Donoso, F Villena
1Division of Endodontics, Faculty of Dentistry, University of Concepción, Chile.
Oral Surgery, Oral Medicine, and Oral Pathology
|September 1, 1991
Summary
This study found that camphorated paramonochlorophenol and formocresol crystallize within dentinal tubules after root canal treatment. These crystallizations may impact the effectiveness and outcomes of endodontic therapy in maxillary teeth.
Area of Science:
- Endodontics
- Dental Materials Science
- Microbiology
Background:
- Root canal treatment aims to eliminate intraradicular infection and seal the root canal system.
- Intracanal medicaments are used to disinfect canals between appointments.
- Understanding the behavior of medicaments within the root canal system is crucial for effective treatment.
Purpose of the Study:
- To investigate the crystallization behavior of camphorated paramonochlorophenol and formocresol within human maxillary root canals.
- To assess the penetration and deposition of these medicaments within dentin walls and tubules.
- To discuss the clinical implications of observed crystallizations in endodontic treatment.
Main Methods:
- Mechanical preparation of 21 maxillary human teeth root canals using reamers.
- Alternative flushing of canals with sodium hypochlorite and hydrogen peroxide.
- Dressing of prepared root canals with camphorated paramonochlorophenol and/or formocresol via paper points.
Main Results:
- All three medicaments (camphorated paramonochlorophenol, formocresol, and potentially the irrigants) demonstrated crystallization.
- Crystallization occurred on the dentin walls of the root canals.
- Crystallization was also observed inside the dentinal tubules.
Conclusions:
- Camphorated paramonochlorophenol and formocresol exhibit significant crystallization within root canal dentin and tubules.
- These crystallizations may affect the sealing ability and long-term success of root canal therapy.
- Further research is needed to evaluate the clinical impact of these findings on endodontic outcomes.