Comparison of shear bond strength of bonded stainless steel brackets using three different light curing systems: An in vitro study
Shashank Soni1, Richa Shree2, Vijeta Patri3, Gaurav Jasoria4, Sapana Singh5, Ashish Kushwah6
1 Senior Lecturer, Department of Orthodontics and Dentofacial Orthpaedics, Peoples Dental Academy, Bhopal Madhya Pradesh, India
2 Reader, Department of Orthodontics and Dentofacial Orthpaedics, Buddha Institute of Dental Sciences and Hospital, Patna, Bihar, India
3 Senior Lecturer, Department of Orthodontics and Dentofacial Orthpaedics, Hi Tech Dental College and Hospital, Bhubneshwar, Odisha, India
4 Professor and Head, Department of Orthodontics and Dentofacial Orthpaedics, Maharana Pratap College of Dentistry and Research Centre, Gwalior, Madhya Pradesh, India
5 Consultant Orthodontist, Mumbai, Maharastra, India
6 Senior Lecturer, Department of Orthodontics and Dentofacial Orthpaedics, Peoples College of Dental Sciences and Research Centre, Bhopal Madhya Pradesh, India
FH- 484, Deen Dayal Nagar, Gwalior, Madhya Pradesh – 474 020
Source of Support: None, Conflict of Interest: None
OBJECTIVES: To evaluate and compare the shear bond strength of stainless-steel brackets using three different light curing units
MATERIAL AND METHODS: Using three LED curing units (3M ESPE Elipar, Ivoclar bluephase, and Woodpecker I LED light cure), 120 precoated metal brackets (Gemini series, 3M Unitek) were cured. The shear bond strength was recorded using a universal testing machine.
RESULT: The shear strength of the bracket in different light-curing systems was examined with ANOVA test. The mean shear strength of group A, group B, and group C were 16.03 ± 14.30 MPA, 16.86 ± 11.89 MPA, and 20.51 ± 19.40, respectively. The result of the analysis shows that there is a major difference in shear bond strength of these three different light-curing systems with F value = 3.94 and P value 0.04
CONCLUSION: We used three LED light-curing units with different intensities and manufacturing companies. The result showed that woodpecker I LED light had significantly highest mean SBS than the other two (Elipar LED curing light and 3M ESPE, Ivoclar bluephase).