| Autor: |
John O. Grippo, Yada Chaiyabutr, John C. Kois |
| Rok vydání: |
2013 |
| Předmět: |
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| Zdroj: |
Journal of Esthetic and Restorative Dentistry. 25:265-272 |
| ISSN: |
1496-4155 |
| DOI: |
10.1111/jerd.12024 |
| Popis: |
Problem Although there is a high prevalence of noncarious cervical lesions (NCCLs), the etiology of these lesions remains contentious. Purpose To evaluate the combined effects of cyclic fatigue stress and biocorrosion activity on NCCLs. Materials and Methods Extracted premolar teeth were allocated into four groups (N = 10). Two groups were cyclically fatigue loaded (100 N; 72 cycles per minute; 9,200 cycles) and placed in either hydrochloric acid gel (pH = 0.1) or orange juice (pH = 4). The other two groups were stored in identical chemical solutions without fatigue load. The buccal–lingual width of each tooth was measured before and after testing. The depth of biocorrosion, normalized by the percentage change in buccolingual width, normalized by time (hour) was calculated. The data were analyzed using a two-way analysis of variance and Tukey's HSD multiple comparison test (α = 0.05). Results Mean (SD) of the depth of biocorrosion values were as follows: teeth receiving fatigue loading with hydrochloric acid gel exposure (1.003%/hour [0.063]) revealed a significantly higher depth of biocorrosion than the fatigue-loaded group with orange juice exposure (0.511%/hour [0.281]) (p |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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