Immediate versus Delayed Force Application after Orthodontic Bonding; An In Vitro Study
Statement of Problem: Bracket de-bonding during initial orthodontic archwire placement immediately after bracket set up or following re-bonding a single bracket can be a clinical concern. Purpose: The aim of this in vitro study was to assess the effect of time on the shear bond strength of a no-mix...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Tehran University of Medical Sciences
2006-03-01
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| Series: | Frontiers in Dentistry |
| Subjects: | |
| Online Access: | https://jdt.tums.ac.ir/index.php/jdt/article/view/77 |
| _version_ | 1817984048985800704 |
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| author | M. Basafa F. Farzanegan |
| author_facet | M. Basafa F. Farzanegan |
| author_sort | M. Basafa |
| collection | DOAJ |
| description | Statement of Problem: Bracket de-bonding during initial orthodontic archwire placement immediately after bracket set up or following re-bonding a single bracket can be a clinical concern.
Purpose: The aim of this in vitro study was to assess the effect of time on the shear bond strength of a no-mix orthodontic composite adhesive.
Materials and Methods: Seventy freshly extracted human upper first premolars were collected and stored in normal saline solution. The teeth were cleaned, polished, and randomly separated into 7 groups of 10. First premolar mesh-backed standard edgewise brackets were bonded to all specimens using a no-mix orthodontic composite adhesive. In the first 6 groups, the brackets were de-bonded 2, 5, 10, 15, 30 and 60 minutes after the primary setting time and the shear bond strengths were determined with the Universal testing machine. The teeth in group 7 were stored in 100% humidity at 37oC for 24 hours before de-bonding. Data were statistically analyzed with one-way ANOVA and the Duncan multiple range analyses via SPSS software.
Results: The minimum shear bond strength of 14.03 MPa was observed in group 1. A statistically significant difference was found between the shear bond strength of group 1 and the other groups (P |
| first_indexed | 2024-04-13T23:40:30Z |
| format | Article |
| id | doaj.art-24737680bc68403eb5ae7e19712aa62b |
| institution | Directory Open Access Journal |
| issn | 2676-296X |
| language | English |
| last_indexed | 2024-04-13T23:40:30Z |
| publishDate | 2006-03-01 |
| publisher | Tehran University of Medical Sciences |
| record_format | Article |
| series | Frontiers in Dentistry |
| spelling | doaj.art-24737680bc68403eb5ae7e19712aa62b2022-12-22T02:24:32ZengTehran University of Medical SciencesFrontiers in Dentistry2676-296X2006-03-0131Immediate versus Delayed Force Application after Orthodontic Bonding; An In Vitro Study M. Basafa0 F. Farzanegan1 Statement of Problem: Bracket de-bonding during initial orthodontic archwire placement immediately after bracket set up or following re-bonding a single bracket can be a clinical concern. Purpose: The aim of this in vitro study was to assess the effect of time on the shear bond strength of a no-mix orthodontic composite adhesive. Materials and Methods: Seventy freshly extracted human upper first premolars were collected and stored in normal saline solution. The teeth were cleaned, polished, and randomly separated into 7 groups of 10. First premolar mesh-backed standard edgewise brackets were bonded to all specimens using a no-mix orthodontic composite adhesive. In the first 6 groups, the brackets were de-bonded 2, 5, 10, 15, 30 and 60 minutes after the primary setting time and the shear bond strengths were determined with the Universal testing machine. The teeth in group 7 were stored in 100% humidity at 37oC for 24 hours before de-bonding. Data were statistically analyzed with one-way ANOVA and the Duncan multiple range analyses via SPSS software. Results: The minimum shear bond strength of 14.03 MPa was observed in group 1. A statistically significant difference was found between the shear bond strength of group 1 and the other groups (Phttps://jdt.tums.ac.ir/index.php/jdt/article/view/77Universal testing machineNo-mix compositeIn-vitro study |
| spellingShingle | M. Basafa F. Farzanegan Immediate versus Delayed Force Application after Orthodontic Bonding; An In Vitro Study Frontiers in Dentistry Universal testing machine No-mix composite In-vitro study |
| title | Immediate versus Delayed Force Application after Orthodontic Bonding; An In Vitro Study |
| title_full | Immediate versus Delayed Force Application after Orthodontic Bonding; An In Vitro Study |
| title_fullStr | Immediate versus Delayed Force Application after Orthodontic Bonding; An In Vitro Study |
| title_full_unstemmed | Immediate versus Delayed Force Application after Orthodontic Bonding; An In Vitro Study |
| title_short | Immediate versus Delayed Force Application after Orthodontic Bonding; An In Vitro Study |
| title_sort | immediate versus delayed force application after orthodontic bonding an in vitro study |
| topic | Universal testing machine No-mix composite In-vitro study |
| url | https://jdt.tums.ac.ir/index.php/jdt/article/view/77 |
| work_keys_str_mv | AT mbasafa immediateversusdelayedforceapplicationafterorthodonticbondinganinvitrostudy AT ffarzanegan immediateversusdelayedforceapplicationafterorthodonticbondinganinvitrostudy |