| Autor: |
Ahmed Mostafa Abdelfattah Mohamed, Mahmoud El-Moutassem Bellah El Homossany, Sarah Mohamed Abdelmoniem, Tariq Yehia Abdelrahman |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
BMC Oral Health, Vol 22, Iss 1, Pp 1-11 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
1472-6831 |
| DOI: |
10.1186/s12903-022-02282-3 |
| Popis: |
Abstract Background Debonding of ball attachments is one of the complications that annoy teeth supported overdenture wearers. The polyetheretherketone (PEEK) and polyetherketoneketone (PEKK) polymers are widely applied in the dental field. The purpose of the current study was to compare the tensile bond strength of ball attachments made of such materials and the commonly used titanium ones after 5 years of overdenture insertion and removal (5000 cycles) in addition to chewing simulation (1,200,000 cycle). Methods Extracted mandibular canines (N = 60) were randomly allocated into three groups and received ball attachments; titanium (group TI; N = 20), PEEK (group PE; N = 20), PEKK (group PK; N = 20). In each group, the samples were divided into two subgroups whereas tensile bond strength was measured pre aging (T0; n = 10) and post aging (T1; n = 10). Tensile bond strength was measured by the Pull out test using the Universal testing machine. Failure mode analysis was determined by examination of the samples’ surfaces under 65X stereomicroscope. The resulting data followed normal distribution and the significance level was set at (α = 0.05). Results One Way Anova showed statistically significant difference between the three groups (P |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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