Impression Techniques for Multiple Implants: A Photoelastic Analysis. Part I: Comparison of Three Direct Methods
| Autor: | Itamar Lopes-Júnior, Bárbara de Lima Lucas, Vanderlei Luiz Gomes, Henner Alberto Gomide |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Dental Stress Analysis
Dental Impression Technique Materials science medicine.medical_treatment Acrylic Resins Dentistry Dental Abutments Direct transfer Dental floss medicine Humans Dental implant Acrylic resin Dental Implants Orthodontics Photoelasticity business.industry Dental Impression Materials Stress distribution Models Dental Impression visual_art Direct methods visual_art.visual_art_medium Periodontal Splints Dental Prosthesis Implant-Supported Oral Surgery business |
| Zdroj: | Journal of Oral Implantology. 39:539-544 |
| ISSN: | 1548-1336 0160-6972 |
| DOI: | 10.1563/aaid-joi-d-11-00040 |
| Popis: | The purpose of this article was to compare through photoelastic analysis the stress distribution in 3 direct transfer techniques for implants with splinting. Three photoelastic resin blocks were made with 2 implants placed parallel to each other and 2 square transfer copings splinted. Both transfers were splinted with acrylic resin chemically activated in 3 different techniques: metallic sticks (T1), prefabricated acrylic bars (T2), or dental floss (T3). A circular polariscope was used, and the distortion energy (E) was calculated in 4 periods: 20 minutes and 3, 24, and 36 hours. Statistically significant differences were found among the 3 techniques (P < .05). The dental floss presented the greatest distortion energy values (T3 = 0.469 Kgf/mm2) and the metallic sticks the lowest values (T1 = 0.0 Kgf/mm2). Thus, the metallic sticks technique (T1) appears to be the most accurate protocol to be used for implant-supported prosthesis with multiple abutments. |
| Databáze: | OpenAIRE |
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