التفاصيل البيبلوغرافية
| العنوان: |
Loading and composite restoration assessment of various non-carious cervical lesions morphologies - 3D finite element analysis. |
| المؤلفون: |
Soares, PV, Machado, AC, Zeola, LF, Souza, PG, Galvão, AM, Montes, TC, Pereira, AG, Reis, BR, Coleman, TA, Grippo, JO |
| المصدر: |
Australian Dental Journal; Sep2015, Vol. 60 Issue 3, p309-316, 8p |
| مصطلحات موضوعية: |
FINITE element method, TISSUE wounds, PALATAL muscles, BICUSPIDS, CARBON composites |
| مستخلص: |
Background The present study analysed the effects of different occlusal loading on premolars displaying various non-carious cervical lesions morphologies, restored (or not) with composites, by 3D finite element analysis. Methods A three-dimensional digital model of a maxillary premolar was generated using CAD software. Three non-carious cervical lesions morphological types were simulated: wedged-shaped, saucer and mixed. All virtual models underwent three loading types (100 N): vertical, buccal and palatal loading. The simulated non-carious cervical lesions morphologies were analysed with and without restorations to consider specific regions, such as the occlusal and gingival walls as well as the depth of the lesions. Data summarizing the stress distribution were obtained in MPa using Maximum Principal Stress. Results Palatal loads were responsible for providing the highest values of accumulated tensile stress on the buccal wall; 27.66 MPa and 25.76 MPa for mixed and wedged-shaped morphologies, respectively. The highest tensile values found on non-carious cervical lesions morphologies restored with composite resin were 5.9 MPa in the mixed morphology, similar to those found on sound models despite their morphologies and occlusal loading. Conclusions The various non-carious cervical lesions morphologies had little effect on stress distribution patterns, whereas the loading type and presence of composite restorations influenced the biomechanical behaviour of the maxillary premolars. [ABSTRACT FROM AUTHOR] |
|
Copyright of Australian Dental Journal is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
Full Text Finder