Effect of the simulated periodontal ligament on cast post-and-core removal using an ultrasonic device
ABSTRACT OBJECTIVE: The aim of this study was to evaluate the effect of simulated periodontal ligament (SPDL) on custom cast dowel and core removal by ultrasonic vibration. MATERIAL AND METHODS: Thirty-two human maxillary canines were included in resin cylinders with or without SPDL made from polyet...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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University of São Paulo
2010-10-01
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| Series: | Journal of Applied Oral Science |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572010000500017 |
| _version_ | 1819097040276160512 |
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| author | Manoel Brito-Junior Neilor Mateus Antunes Braga Danilo Costa Rodrigues Carla Cristina Camilo André Luis Faria-e-Silva |
| author_facet | Manoel Brito-Junior Neilor Mateus Antunes Braga Danilo Costa Rodrigues Carla Cristina Camilo André Luis Faria-e-Silva |
| author_sort | Manoel Brito-Junior |
| collection | DOAJ |
| description | ABSTRACT OBJECTIVE: The aim of this study was to evaluate the effect of simulated periodontal ligament (SPDL) on custom cast dowel and core removal by ultrasonic vibration. MATERIAL AND METHODS: Thirty-two human maxillary canines were included in resin cylinders with or without SPDL made from polyether impression material. In order to allow tensile testing, the roots included in resin cylinders with SPDL were fixed to cylinders with two stainless steel wires. Post-holes were prepared by standardizing the length at 8 mm and root canal impressions were made with self-cured resin acrylic. Cast dowel and core sets were fabricated and luted with Panavia F resin cement. Half of the samples were submitted to ultrasonic vibration before the tensile test. Data were analyzed statistically by two-way ANOVA and Tukey's post-hoc tests (p<0.05). RESULTS: The ultrasonic vibration reduced the tensile strength of the samples directly included in resin cylinders. There was no difference between the values, whether or not ultrasonic vibration was used, when the PDL was simulated. However, the presence of SPDL affected the tensile strength values even when no ultrasonic vibration was applied. CONCLUSION: Simulation of PDL has an effect on both ultrasonic vibration and tensile testing. |
| first_indexed | 2024-12-22T00:08:46Z |
| format | Article |
| id | doaj.art-3afb3577992849d8be9aa81dc62ef696 |
| institution | Directory Open Access Journal |
| issn | 1678-7757 1678-7765 |
| language | English |
| last_indexed | 2024-12-22T00:08:46Z |
| publishDate | 2010-10-01 |
| publisher | University of São Paulo |
| record_format | Article |
| series | Journal of Applied Oral Science |
| spelling | doaj.art-3afb3577992849d8be9aa81dc62ef6962022-12-21T18:45:30ZengUniversity of São PauloJournal of Applied Oral Science1678-77571678-77652010-10-0118552853210.1590/S1678-77572010000500017Effect of the simulated periodontal ligament on cast post-and-core removal using an ultrasonic deviceManoel Brito-JuniorNeilor Mateus Antunes BragaDanilo Costa RodriguesCarla Cristina CamiloAndré Luis Faria-e-SilvaABSTRACT OBJECTIVE: The aim of this study was to evaluate the effect of simulated periodontal ligament (SPDL) on custom cast dowel and core removal by ultrasonic vibration. MATERIAL AND METHODS: Thirty-two human maxillary canines were included in resin cylinders with or without SPDL made from polyether impression material. In order to allow tensile testing, the roots included in resin cylinders with SPDL were fixed to cylinders with two stainless steel wires. Post-holes were prepared by standardizing the length at 8 mm and root canal impressions were made with self-cured resin acrylic. Cast dowel and core sets were fabricated and luted with Panavia F resin cement. Half of the samples were submitted to ultrasonic vibration before the tensile test. Data were analyzed statistically by two-way ANOVA and Tukey's post-hoc tests (p<0.05). RESULTS: The ultrasonic vibration reduced the tensile strength of the samples directly included in resin cylinders. There was no difference between the values, whether or not ultrasonic vibration was used, when the PDL was simulated. However, the presence of SPDL affected the tensile strength values even when no ultrasonic vibration was applied. CONCLUSION: Simulation of PDL has an effect on both ultrasonic vibration and tensile testing.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572010000500017Post and core techniqueUltrasoundPeriodontal ligament |
| spellingShingle | Manoel Brito-Junior Neilor Mateus Antunes Braga Danilo Costa Rodrigues Carla Cristina Camilo André Luis Faria-e-Silva Effect of the simulated periodontal ligament on cast post-and-core removal using an ultrasonic device Journal of Applied Oral Science Post and core technique Ultrasound Periodontal ligament |
| title | Effect of the simulated periodontal ligament on cast post-and-core removal using an ultrasonic device |
| title_full | Effect of the simulated periodontal ligament on cast post-and-core removal using an ultrasonic device |
| title_fullStr | Effect of the simulated periodontal ligament on cast post-and-core removal using an ultrasonic device |
| title_full_unstemmed | Effect of the simulated periodontal ligament on cast post-and-core removal using an ultrasonic device |
| title_short | Effect of the simulated periodontal ligament on cast post-and-core removal using an ultrasonic device |
| title_sort | effect of the simulated periodontal ligament on cast post and core removal using an ultrasonic device |
| topic | Post and core technique Ultrasound Periodontal ligament |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572010000500017 |
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