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Bleaching with 37.5% hydrogen peroxide lowers intensity of tooth sensitivity
Clinicians should opt to use a neutral 37.5% HP in-office bleaching gel for two 8 min applications/clinical session because produces the same whitening effectiveness, risk and low intensity of tooth sensitivity, finds a study published recently in the Journal of Esthetic and Restorative Dentistry.
Sônia Saeger Meireles and associates from the Department of Operative Dentistry, Federal University of Paraiba, João Pessoa, Paraiba, Brazil conducted this randomized clinical trial evaluated the effectiveness and tooth sensitivity (TS) of 37.5% hydrogen peroxide (37.5HP) in-office bleaching with reduced protocol.
Forty participants with shade mean C2 or darker for the six maxillary anterior teeth were randomly allocated into two treatment groups of 20 each, all of them undergoing two (37.5HP2) or three (37.5HP3) 8 min applications/clinical session.
Three clinical sessions were performed with a 1 week interval. Color evaluations were done with a spectrophotometer at baseline and 1 week post-bleaching. TS was measured during and up to 48 h after bleaching using a five-point numeric rating scale.
Color change was evaluated by Student's t-test for independent samples. The absolute risk and intensity of TS were analyzed by Fisher's and Mann–Whitney/Friedman tests (p < 0.05).
The authors revealed that both treatment groups resulted in a significant tooth whitening 1 week post-bleaching. There were no significant differences between 37.5HP2 and 37.5HP3. Also, there were not differences between groups regarding high absolute risk (p = 1.0) and low intensity of TS at all time assessments.
Therefore, the authors concluded that "the in-office bleaching with two 37.5% HP applications produced the same whitening degree, risk and intensity of TS to that performed with three gel applications."
Furthermore, the authors discussed that clinicians should opt to use a neutral 37.5% HP in-office bleaching gel for two 8 min applications/clinical session because produces the same whitening effectiveness, risk and low intensity of TS as the protocol proposed by manufacturer (three 8 min applications).
BDS, MDS( Pedodontics and Preventive Dentistry)
Dr. Nandita Mohan is a practicing pediatric dentist with more than 5 years of clinical work experience. Along with this, she is equally interested in keeping herself up to date about the latest developments in the field of medicine and dentistry which is the driving force for her to be in association with Medical Dialogues. She also has her name attached with many publications; both national and international. She has pursued her BDS from Rajiv Gandhi University of Health Sciences, Bangalore and later went to enter her dream specialty (MDS) in the Department of Pedodontics and Preventive Dentistry from Pt. B.D. Sharma University of Health Sciences. Through all the years of experience, her core interest in learning something new has never stopped. She can be contacted at editorial@medicaldialogues.in. Contact no. 011-43720751
Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751