Akilananth, B (2012) Comparison of shear & tensile bond strength of brackets bonded with a conventional (2 step) and a self- etch (All in One) bonding systems: An in vitro study. Masters thesis, Sri Ramakrishna Dental College and Hospital, Coimbatore.
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Abstract
This study was conducted to evaluate the bond strength that can be achieved with the newly introduced single bottle, seventh generation primer Xeno IV and to compare it with that achieved with conventional etch and bond ,fifth generation primer, Single bond. Since the brackets bonded to the teeth are subjected to a complex force including shear, tensile and tortional forces, we, in this study evaluated both shear and tensile bond strength that can be achieved with these primers and to know whether the bond strength achieved with seventh generation primers will be adequate enough, for clinical applications. one other study in which Xeno IV has been evaluated has used bovine teeth, to better simulate the clinical application, we in this study used extracted human premolars. On the basis of our results it can be concluded that • The mean shear bond strength of 13.48 + 2.6 Mpa for acid etch group is significantly higher than the mean shear bond strength of 10.36 + 1.11 Mpa achieved with SEP group. • Similarly the mean tensile bond strength of 6.66+ 1.21 Mpa of acid etch group is significantaly higher than the mean tensile bond strength of 4.80 + 1.34 Mpa achieved with SEP. • However all the mean bond strength values were adequate enough to be used for orthodontic bonding. Though the primers used in this study were commercially marketed for conservative purpose and not exclusively for orthodontic bonding, the bond strength achieved with these bonding agents were comparable with products exclusively marketed for orthodontic purpose. Reducing the number of clinical steps during orthodontic bonding is a benefit for the clinician and patient by saving time. Additionally, clinicians can reduce the probability of contamination during bonding using single step primers. But the validity of this results needs to be confirmed with in vivo studies and randomised control trial with larger samples on a long term basis.
| Item Type: | Thesis (Masters) |
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| Uncontrolled Keywords: | Comparison ; shear and tensile bond strength of brackets bonded ; conventional (2 step) ; self- etch (All in One) bonding systems ; in vitro study. |
| Subjects: | DENTAL > Orthodontics and Dentofacial Orthopedics |
| Depositing User: | Subramani R |
| Date Deposited: | 09 Oct 2018 15:35 |
| Last Modified: | 09 Oct 2018 15:35 |
| URI: | http://repository-tnmgrmu.ac.in/id/eprint/9799 |
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