The effect of different confluence confirmation strategies on the obturation of Vertucci type II canal: micro-CT analysis
ObjectivesThe present study aims to compare the obturation quality of 2 confluence confirmation techniques in artificial maxillary first premolars showing Vertucci type II root canal configuration.Materials and MethodsThirty artificial maxillary premolars having Vertucci type II root canal configura...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Korean Academy of Conservative Dentistry
2021-02-01
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| Series: | Restorative Dentistry & Endodontics |
| Subjects: | |
| Online Access: | http://rde.ac/upload/pdf/rde-46-e12.pdf |
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| Summary: | ObjectivesThe present study aims to compare the obturation quality of 2 confluence confirmation techniques in artificial maxillary first premolars showing Vertucci type II root canal configuration.Materials and MethodsThirty artificial maxillary premolars having Vertucci type II root canal configuration were made. They were divided into 3 groups according to the confluence confirmation technique as follows. Gutta-percha indentation (GPI) group (confluence confirmation using a gutta-percha cone and a K file); electronic apex locator (EAL) group (confluence confirmation using K files and EAL); and no confluence detection (NCD) group. In the GPI group and the EAL group, shaping and obturation were performed with the modified working length (WL). In the NCD group, shaping was performed without WL adjustment and obturation was carried out with an adjusted master cone. Micro-computed tomography was used before preparation and after obturation to calculate the percentage of gutta-percha occupied volume (%GPv) and the volume increase in the apical 4 mm. Data were analyzed using 1-way analysis of variance and post hoc Tukey's test.ResultsStatistically significant difference was not found in terms of the %GPv from the apex to apical 4 mm. However, the NCD group showed a statistically significant volume increase compared with the EAL group (p < 0.05).ConclusionsIn terms of gutta-percha occupied volume, no significant difference was observed among the 3 groups. Confluence confirmation using an EAL in teeth with Vertucci type II configuration showed less volume increase during canal shaping compared with no confluence confirmation. |
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| ISSN: | 2234-7658 2234-7666 |