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Effect of post type and restorative techniques on the strain and fracture resistance of flared incisor roots.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Silva, Gisele Rodrigues Da Santos-Filho, Paulo César De Freitas Simamoto-Júnior, Paulo Cézar Martins, Luís Roberto Marcondes Mota, Adérito Soares Da Soares, Carlos José |
| Copyright Year | 2011 |
| Abstract | Restoring flared endodontically treated teeth continues to be a challenge for clinicians. This study evaluated the effect of post types and restorative techniques on the strain, fracture resistance, and fracture mode of incisors with weakened roots. One hundred five endodontically treated bovine incisors roots (15 mm) were divided into 7 groups (n=15). The two control groups were (C) intact roots restored with Cpc (cast posts and core) or Gfp (glass fiber posts). The five experimental groups were (F) flared roots restored with GfpAp (Gfp associated with accessory glass fiber posts), GfpRc (anatomic Gfp, relined with composite resin), and GfpRcAp (anatomized Gfp with resin and accessory glass fiber posts). All teeth were restored with metal crowns. Mechanical fatigue was performed with 3x10(5)/50 N. Specimens were loaded at 45º, and the strain values (μS) were obtained on root buccal and proximal surfaces. Following that, the fracture resistance (N) was measured. One-way ANOVA and Tukey's HSD tests (α=0.05) were applied, and failure mode was checked. No significant difference in strain values among the groups was found. Cpc presented lower fracture resistance and more catastrophic failures in flared roots. Gfp associated with composite resin or accessory glass fiber posts seems to be an effective method to improve the biomechanical behavior of flared roots. |
| Starting Page | 18 |
| Ending Page | 19 |
| Page Count | 2 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.scielo.br/pdf/bdj/v22n3/a09v22n3.pdf |
| PubMed reference number | 21915521v1 |
| Volume Number | 22 |
| Issue Number | 3 |
| Journal | Brazilian dental journal |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Bos taurus Buccal surface Checking (action) Choroid Plexus Carcinoma Composite Resins Fatigue Green Fluorescent Proteins Incisor Odontogenic Tissue Prostheses, Dental, Fixed, Crown, Total, Temporary Resins, Plant Specimen Spondyloepiphyseal dysplasia, Omani type Tooth root structure fiberglass |
| Content Type | Text |
| Resource Type | Article |
