Evaluation of dentinal surface with clinical microscope after intra-radicular
Objective: To evaluate the time spent and possible fissure lines, fractures and other damage caused on the dentinal surface around theintra-radicular retainer submitted to ultrasonic vibration to remove it, using a clinical microscope. Methods: The roots of 15 bovine mandibular central incisors were...
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| Main Authors: | , , , |
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| Format: | Book |
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Faculdade São Leopoldo Mandic,
2008-01-01T00:00:00Z.
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| Summary: | Objective: To evaluate the time spent and possible fissure lines, fractures and other damage caused on the dentinal surface around theintra-radicular retainer submitted to ultrasonic vibration to remove it, using a clinical microscope. Methods: The roots of 15 bovine mandibular central incisors were used. These contained Flexi-Post No. 3 intra-radicular retainers cemented with RelyX CRA® resinous cement and were included in an artificial alveolus, surrounded by a layer of silicone. The retainers were submitted to ultrasonic vibration with the ENAC model EO-5 appliance at maximum power, and after removal, an evaluation was made by the naked eye, and another with a clinical microscope, at magnifications of 5, 8, 12.5 and 20 times. Results: The results showed that no dentinal surface presented fissure lines, cracks or other damage, and that the mean time for removalof the retainers was 13.25 minutes. Conclusion: Ultrasound was shown to be an efficient and safe appliance for intra-radicular retainer removal. |
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| Item Description: | 0103-6971 1981-8637 |