Potential to induce dentinal cracks during retreatment procedures of teeth treated with 'Russian red': An ex vivo study
| Autor: | Jolanta Aleksejūnienė, Eglė Nedzinskienė, Audronė Jakaitienė, Vytautė Pečiulienė, Rasmutė Manelienė, Saulius Drukteinis |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Molar
Root canal Magnification Dentistry Mandible ‘‘Russian red’’ Tooth Fractures 030207 dermatology & venereal diseases 03 medical and health sciences 0302 clinical medicine medicine Dentin Humans lcsh:R5-920 business.industry Ultrasound Root canal preparation 030206 dentistry Resorcinol–formaldehyde resin Crack detection medicine.anatomical_structure Coronal plane Retreatment Resorcinol-formaldehyde resin “Russian red” Automotive Engineering lcsh:Medicine (General) business Previously treated Ex vivo |
| Zdroj: | Medicina; Volume 53; Issue 3; Pages: 166-172 Medicina Volume 53 Issue 3 Pages 166-172 Medicina, Wrocław : Elsevier, 2017, Vol. 53, Iss. 3, p. 166-172 Medicina, Vol 53, Iss 3, Pp 166-172 (2017) |
| ISSN: | 1010-660X |
| DOI: | 10.1016/j.medici.2017.05.005 |
| Popis: | Objective: The aim of this study was to compare the impact of treatment procedures on roots previously treated with resorcinol–formaldehyde resin and analyze the effectiveness of dye and magnification for the detection of dentin cracks. Materials and methods: Distal roots of 80 permanent first mandibular molars with a single canal were sectioned at 3 mm and 9 mm from the anatomical apex. Two groups were formed according to the method used for root canal penetration: group 1 (K-file and Pro Taper instruments) and group 2 (Ultrasound with Pro Ultra and Pro Taper files). Before and after the completion of procedures, photographs of the roots were taken for examination for cracks or/and infraction lines with two levels of magnification and with or without a dye. Results: In groups 1 and 2, either with dye or without it, there were statistically significant differences (P < 0.001) with more fractures observed in the coronal than in the apical part of specimens. Statistically significant proportional differences regarding the location of fractures were observed at both magnifications. When the dye was used, there were no statistically significant differences between the two magnifications in the detection of cracks. In the specimens where the dye was not used, differences between the groups were statistically significant at both magnifications with more complete and intra-dental fractures observed in group 2. Conclusions: Retreatment methods had a damaging effect on the root dentin of teeth previously treated with resorcinol–formaldehyde resin. At magnification ×16, the efficacy of using the dye for the detection of cracks was higher than detection without the dye. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|