Displacement of apical plugs fabricated from calcium hydroxide paste in three root canal filling techniques
| Autor: | Pereira Lcg, De Moraes Ig, Norberti Bernardineli, Roberto Brandão Garcia, Fernando Accorsi Orosco, Clóvis Monteiro Bramante, Duarte Mah |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Materials science
Calcium hydroxide business.industry Root canal IRRIGANTES DO CANAL RADICULAR Dentistry Lateral condensation Apex (geometry) Reverse order Apical plug chemistry.chemical_compound medicine.anatomical_structure chemistry medicine Displacement (orthopedic surgery) Apical foramen Composite material business |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| Popis: | Objective: The present study evaluated the displacement of calcium hydroxide apical plugs in the root canals of teeth with enlarged apical foramens subjected to three filling techniques: lateral condensation, a hybrid method, and a thermoplastic technique (Ultrafil). Methods: The root canals of 30 extracted single-rooted human teeth were drilled in reverse order with no. 1-5 Gates-Glidden drills using a crown-down technique until the no. 1 drill passed through the apical foramen. The specimens were prepared with K files, beginning with a 50 K file and progressing until a 90 K file was visible 1 mm beyond the apex. Apical plugs were fabricated from calcium hydroxide paste, and the specimens were stored at 37°C at 100% humidity for 3 days. They were allocated into three experimental groups (n=10) according to the root canal technique. After filling, the specimens were incubated for 48 h at 37°C and longitudinally sectioned to assess apical plug displacement. Data was analysed by Kruskall-Wallis and Dun´s tests. Results: The hybrid method caused the largest average apical plug displacement (1.96 mm), followed by the lateral condensation technique (0.85 mm) and the Ultrafil system (0.59 mm). Conclusions: According to the results obtained in this study, when a 5mm apical plug is fabricated using L & C paste, filling of the remaining root canal can be performed with lateral condensation technique, hybrid method or Ultrafill. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|