Short implants to support mandibular complete dentures - photoelastic analysis
Abstract This study evaluated the stress behavior around short implants in edentulous atrophic mandibles. Six groups included implants with two diameters regular and wide (4 and 5 mm) and three lengths (5, 7 and 9 mm) as follows: Ci9 (9 x 4 mm), Ci7 (7 x 4 mm), Ci5 (5 x 4 mm), Wi9 (9 x 5 mm), Wi7 (7...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Pesquisa Odontológica
2017-02-01
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| Series: | Brazilian Oral Research |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242017000100216&lng=en&tlng=en |
| _version_ | 1811314540859621376 |
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| author | Marcele Jardim PIMENTEL Wander José da SILVA Altair Antoninha DEL BEL CURY |
| author_facet | Marcele Jardim PIMENTEL Wander José da SILVA Altair Antoninha DEL BEL CURY |
| author_sort | Marcele Jardim PIMENTEL |
| collection | DOAJ |
| description | Abstract This study evaluated the stress behavior around short implants in edentulous atrophic mandibles. Six groups included implants with two diameters regular and wide (4 and 5 mm) and three lengths (5, 7 and 9 mm) as follows: Ci9 (9 x 4 mm), Ci7 (7 x 4 mm), Ci5 (5 x 4 mm), Wi9 (9 x 5 mm), Wi7 (7 x 5 mm) and Wi5 (5 x 5 mm). These groups were compared to the control group CG (11 x 4 mm). The analysis was performed with the photoelastic method (n = 6). Each model comprised 4 implants with the same length and diameter connected by a chromium-cobalt bar that simulates a fixed denture. A 0.15 kg force was applied at the end of the cantilever (15 mm), and the maximum shear stress was recorded around the distal and subsequent implants. The stress values were determined, and the quantitative data (Fringes®) were submitted to statistical analysis with one-way ANOVA and the Dunnett test (p < 0.05). It was observed that the reduction in implant length increased stress values with a significant difference (p < 0.05) between CG Ci7 and Ci5, while the increase in implant diameter reduced the stress values without any differences found between short and long implants. Implants with 5 and 7 mm with regular diameter increased stress levels while short implants with larger diameters experienced similar stress to that of longer implants. |
| first_indexed | 2024-04-13T11:14:25Z |
| format | Article |
| id | doaj.art-80c9965e207d4333810fbd1d888ef988 |
| institution | Directory Open Access Journal |
| issn | 1807-3107 |
| language | English |
| last_indexed | 2024-04-13T11:14:25Z |
| publishDate | 2017-02-01 |
| publisher | Sociedade Brasileira de Pesquisa Odontológica |
| record_format | Article |
| series | Brazilian Oral Research |
| spelling | doaj.art-80c9965e207d4333810fbd1d888ef9882022-12-22T02:49:02ZengSociedade Brasileira de Pesquisa OdontológicaBrazilian Oral Research1807-31072017-02-0131010.1590/1807-3107bor-2017.vol31.0018S1806-83242017000100216Short implants to support mandibular complete dentures - photoelastic analysisMarcele Jardim PIMENTELWander José da SILVAAltair Antoninha DEL BEL CURYAbstract This study evaluated the stress behavior around short implants in edentulous atrophic mandibles. Six groups included implants with two diameters regular and wide (4 and 5 mm) and three lengths (5, 7 and 9 mm) as follows: Ci9 (9 x 4 mm), Ci7 (7 x 4 mm), Ci5 (5 x 4 mm), Wi9 (9 x 5 mm), Wi7 (7 x 5 mm) and Wi5 (5 x 5 mm). These groups were compared to the control group CG (11 x 4 mm). The analysis was performed with the photoelastic method (n = 6). Each model comprised 4 implants with the same length and diameter connected by a chromium-cobalt bar that simulates a fixed denture. A 0.15 kg force was applied at the end of the cantilever (15 mm), and the maximum shear stress was recorded around the distal and subsequent implants. The stress values were determined, and the quantitative data (Fringes®) were submitted to statistical analysis with one-way ANOVA and the Dunnett test (p < 0.05). It was observed that the reduction in implant length increased stress values with a significant difference (p < 0.05) between CG Ci7 and Ci5, while the increase in implant diameter reduced the stress values without any differences found between short and long implants. Implants with 5 and 7 mm with regular diameter increased stress levels while short implants with larger diameters experienced similar stress to that of longer implants.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242017000100216&lng=en&tlng=enDental ImplantsBone ResorptionDentureComplete |
| spellingShingle | Marcele Jardim PIMENTEL Wander José da SILVA Altair Antoninha DEL BEL CURY Short implants to support mandibular complete dentures - photoelastic analysis Brazilian Oral Research Dental Implants Bone Resorption Denture Complete |
| title | Short implants to support mandibular complete dentures - photoelastic analysis |
| title_full | Short implants to support mandibular complete dentures - photoelastic analysis |
| title_fullStr | Short implants to support mandibular complete dentures - photoelastic analysis |
| title_full_unstemmed | Short implants to support mandibular complete dentures - photoelastic analysis |
| title_short | Short implants to support mandibular complete dentures - photoelastic analysis |
| title_sort | short implants to support mandibular complete dentures photoelastic analysis |
| topic | Dental Implants Bone Resorption Denture Complete |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242017000100216&lng=en&tlng=en |
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