Journal of Research and Advancement in Dentistry
Official publication of Magadh University and Kolhan University, Government of Bihar and Jharkhand, India
Official publication of Magadh University and Kolhan University, Government of Bihar and Jharkhand, India
Year : 2019
Volume : Volume 10
Issue : Issue 4
Address for correspondence :
Dr. Ashish Kushwah.
ashishkushwah998@gmail.com
Background: To evaluate the effect of saliva contamination on tensile bond strength (TBS) of brackets bonded using different primer technique. Materials and methods: 90 sound human premolars that had been extracted for orthodontic purpose were collected from patient between 15-30 years. The teeth were divided into 3 equal groups with an equal number of 1st & 2nd upper & lower premolars in each group. The buccal surface of each tooth was cleaned with fluoride-free pumice & water slurry with dental rotary handpiece & brush, washed & dried with compressed air cleaned surface then etched with phosphoric acid for 30 seconds, washed and dried. In the group, A control group the teeth were contaminated with saliva bonded with normal etching and primer technique. In group B the teeth were contaminated with saliva and bonded with self etch primer technique. In group C the teeth were contaminated with saliva and bonded with moisture insensitive primer. Result: The results of the analysis of variance indicated that there were significant differences (F value =7.458, P value=.018 in bond strengths between the various groups tested. The highest value of shear bond strength occurred when contaminated with saliva and bonded with MIP technique (group C). The mean bonded strength of MIP was 15.4297± 6.63519 Mpa. When bonding was done with conventional technique (group A) shear bond strength obtained was slightly lower (mean= 13.43± 4.63 Mpa) as compared to group C. On the other hand lowest shear bond strength among all three groups occurred when bonding was done with SEP technique. The mean bond strength of group B was 10.2517± 6.63519Mpa. Conclusion: Self-etch primer displayed considerably superior performance under dry compared with contaminated conditions. Mean value of the MIP was comparatively higher than the other primer technique. Furthermore, research should be recommended for a better result.
Keywords: Tensile bond strength, shear bond strength, saliva contamination, self etch primer, moisture insensitive primer.
