An interventional study of Treatment in Discolored Teeth, sponsored by Cairo University. Not yet recruiting. Open to participants aged 18 Years to 45 Years. Per ClinicalTrials.gov, last updated 2026-08-18.
Sponsored by Cairo University · Not applicable, Interventional, and Treatment
To evaluate the effect of prophylaxis pastes with and without desensitizing agents prior to in-office bleaching on color change and tooth sensitivity.
105 studies on the registry are indexed under Tooth Discoloration; 19 are open to participants now.
This study's planned enrollment of 38 is below the median of 48 across 97 interventional studies indexed under Tooth Discoloration.
Browse Tooth Discoloration studies →Cairo University is the lead sponsor of 4,941 studies on the registry; 1,458 are open to participants now.
Of its 37 completed or terminated interventional studies of FDA-regulated products, 5 (14%) have results posted.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Prophylaxis paste with desensitizing agent
Other: Treatment
Prophylaxis paste without desensitizing agent
Other: Treatment
Prophylaxis paste will be applied to all tooth surfaces using a prophy cup attached to a low-speed contra-angle handpiece. The paste will remain on the teeth for the duration specified in the manufacturer's instructions for use before being rinsed away.
Color change
Tooth color will be measured using the VITA Easyshade V spectrophotometer. Color measurements will be recorded in the CIE L\*, a\*, and b\* color space, and the color difference will be calculated using the CIEDE2000 color-difference formula (ΔE00).
Time frame: Baseline, Immediate after bleaching
Tooth sensitivity
Pain intensity will be assessed using a 10-cm Visual Analog Scale (VAS), ranging from 0 (no pain) to 10 (worst pain imaginable). Patients will be asked to place a mark on the 10-cm VAS corresponding to the intensity of their pain.
Time frame: Baseline, Immediate after bleaching
No study locations are listed for this record.
Plan to share: No
No publications or documents are linked to this record.
Start is estimated for Aug 2026; primary completion for Aug 2026, 0 months later.
Of 44 non-industry interventional studies with no phase under Tooth Discoloration, half reached primary completion within 10 months of starting (the median), counting those still running; a quarter within 5 and three quarters within 21. This study's planned 0 months is below that.
Counting every sponsor, half of 52 studies reached it within 8 months; a quarter within 2 and three quarters within 18.
How these figures are worked out, and which studies are left out of them.
This study is not yet recruiting, as verified in Aug 2026. You cannot join it, but the record below documents what was studied.
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