One Year Clinical Follow-up of the rebound of bleached teeth Color using of two different in-office bleaching techniques. | ||||
| Egyptian Dental Journal | ||||
| Volume 70, Issue 3 - Serial Number 4, July 2024, Page 2821-2834 PDF (1.02 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/edj.2024.280972.2995 | ||||
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| Authors | ||||
Emad Mohammed El.Sayed   1; Ahlam Abd El-Galil Nassar 2
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| 1Restorative dentistry department ,Faculty of dentistry,Pharos university,Alexandria,Egypt. | ||||
| 2Restorative dentistry department ,Faculty of dentistry,Tanta university,Egypt. | ||||
| Abstract | ||||
| Aim: A clinical assessment the color regression of bleached teeth for one year . Materials and methods: Thirty nonsmoker patients (18-23) having A4 shad sound anterior upper and lower segments were selected. The shades were measured using visual standardized shade guide and confirmed by spectrophotometer. The sixty Segments were distributed into 2 groups (30 segments each) according to the bleaching system used, Group I: Chemical activated bleaching system 40% HP & Group II: light activated bleaching system, mixed 32% HP. Each gp involved 15 upper and 15 lower segments at the 30 pts. Every group was distributed into 2 subgroups according to the location whether upper or lower segments. Every tooth shade was documented before bleaching, momently after bleaching, at 3 months intervals for a year .the collected data was c statistically analyzed. Results: There was a significant difference between follow up periods in both groups I & II at the upper segments appeared after 12 months &9 months. Also the shades of lower teeth recorded a significant difference between group I & II . There was no significant difference appeared between group I vs II at every perceptions periods. After comparing between upper vs lower segments, there was non-significant in both groups I & II . Conclusion: The whitening degree was nearly the same with the two used bleaching systems with non-significant difference in color between upper and lower segments. Faster regression of color was observed with light activated bleaching than with chemically activated bleaching. Chemical activated, Light activated | ||||
| Keywords | ||||
| Clinical; Rebound; Bleaching; Chemical activated; Light activated | ||||
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