Influence of root canal dressings and sealers on repair of apical periodontitis after endodontic treatment |
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Authors: | Berbert Fábio Luiz Camargo Villela Leonardo Mário Roberto Silva Léa Assed Bezerra Tanomaru Filho Mário Bramante Clóvis Monteiro |
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Affiliation: | 1. Department of Pediatric Dentistry, Faculty of Dentistry, Marmara University, Istanbul, Turkey;2. Department of Genetics and Bioengineering, Faculty of Engineering, Yeditepe University, Istanbul, Turkey;3. BIOMATEN Center of Excellence in Biomaterials and Tissue Engineering, Middle East Technical University (METU), Ankara, Turkey;1. Dentistry Programme, Faculty of Medical Sciences, The University of the West Indies, Mona Campus, Kingston 7, Jamaica, West Indies;2. Atlanta, GA, USA;3. Dentistry Program, The University of the West Indies, Mona, Jamaica, West Indies;4. Oral and Maxillofacial Surgery, Woodhull Hospital, Brooklyn, NY, USA;5. Department of Dentistry/Oral and Maxillofacial Surgery, Woodhull Medical Center, 760 Broadway, Brooklyn, NY 11206, USA;1. Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA;2. Department of Neurosurgery, Duke University School of Medicine, Durham, North Carolina, USA |
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Abstract: | OBJECTIVE: The objective of this study was to evaluate the histopathologic response of periapical tissues after root canal treatment of necrotic dog teeth with chronic apical periodontitis by using 2 calcium hydroxide-based root canal dressings and 2 root canal sealers. STUDY DESIGN: Seventy-eight root canals were instrumented by using 5.25% sodium hypochlorite as the irrigating solution, after which a calcium hydroxide paste (Calen/PMCC or Calasept) was placed for 30 days as a dressing. The root canals were then filled by using cold lateral gutta-percha condensation and an endodontic sealer (Sealapex or AH Plus). After 360 days, the animals were killed by anesthetic overdose; then, the teeth were histologically prepared, sectioned, and stained with hematoxylin and eosin for optical microscopic analysis of apical and periapical tissue repair. RESULTS: Statistical analysis showed that the poorest histopathologic results were observed in the Calasept/AH Plus group and that the Sealapex sealer overall resulted in better apical repair than the AH Plus sealer. The histopathologic results of Calen/PMCC paste with both AH Plus and Sealapex and Calasept paste with only Sealapex were statistically similar but were different from the results of Calasept with AH Plus. CONCLUSIONS: The results of this study in the dog showed differences in apical and periapical tissue repair of teeth with chronic apical periodontitis by using 2 calcium hydroxide root canal dressings and 2 sealers. More research is necessary to determine the best combination of dressings and sealers. |
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