Hi!

I prefer dentifrice containing arginine, it is quite effective in my experience.

Anyway, looking for an Evidence Based Dentistry answer to your question, I found an article of a double-blind, randomized, parallel-design clinical study that  confirms my opinion. 

Fu Y1, Li X, Que K, Wang M, Hu D, Mateo LR, DeVizio W, Zhang YP. Instant dentin hypersensitivity relief of a new desensitizing dentifrice containing 8.0% arginine, a high cleaning calcium carbonate system and 1450 ppm fluoride: a 3-day clinical study in Chengdu, China. Am J Dent. 2010 May;23 Spec No A:20A-27A.

 See the abstract in the link below

I also found a good RCT testing the effectiveness of nano-calcium phosphate

paste on sensitivity during and after bleaching, but there was not  significant differences in absolute risk and intensity of tooth sensitivity were detected between the groups .  I also attache the file if you want to read it.

I hope you find it useful

http://www.ncbi.nlm.nih.gov/pubmed/21284248

Thank you very much for your answer.... very interisting. Do you have a full text of the first paper that you suggest?

Thank you in advance and best regards.

I sent  the full text of Loguercio A,TAY L, Herrera , Bauer J,Reis A “ Effectiveness of nano-calcium phosphate paste on sensitivity during and after bleaching: a randomized clinical trial “ Braz Oral Res [online]. 2015;29(1):1-7

Ihad no access to the other paper

Best regards

Graciela

Dear Alain Manuel Chaple Gil, literature stated that Arginine containing dentifrices are more preferrable and very effective.

Thank you for your answer Dr Nirmala. Best regards

Dentifrice containing 8.0% arginine are used to dentin hypersensitivity like exposed roots, not in dental bleaching protocols, these uses 0.5% potassium nitrate and 0.11% fluoride ions, 3% potassium nitrate and 1.1% fluoride ions, this desensitizing agents are effective in close the enamel diffusion , in the report of LOGUERCIO he used nano-calcium phosphate paste associated with fluoride and potassium nitrate.

Bienvenido su comentario Dr. Gómez...... muchas gracias y saludos desde Cuba.