Tooth bleaching with hydrogen peroxide and nano‐hydroxyapatite: a 9‐month follow‐up randomized clinical trial

Abstract

Both treatments demonstrated significant improvements in tooth shade. The bleaching effectiveness of the tested products was comparable. The use of 6% HP with 2% n-HA reduced the incidence of sensitivity during the bleaching treatment compared to a bleaching agent that did not contain n-HA.

Teeth bleaching with low concentrations of hydrogen peroxide (6%) and catalyzed by LED blue (450 ± 10 nm) and laser infrared (808 ± 10 nm) light for in‐office treatment: Randomized clinical trial 1‐year follow‐up

“…The effectiveness of bleaching was maintained at 1 year with only a slight rebound in color. This reinforces the idea that catalyzing the hybrid light results in permanent whitening unlike clinical works with 6% concentrations reporting a very high rebound color . The color rebound was not significant relative to baseline ( P > .05).…”

“…9,10 Clearly, the regression continues with time. All reports are related to the concentrations of gels higher than 10% hydrogen peroxide; only one report 11 used a 6% concentration. In a recent study was reported that patients did not experience an initial change of at least 5 units of DE, and showed an approximately 50% color rebound at nine months.…”

Effectiveness of 6% hydrogen peroxide concentration for tooth bleaching—A double-blind, randomized clinical trial

“…4,11 In this report by Vano et al the patients do not achieve a change of at least 5 units DE, which was considered ineffective. 10 Soares et al recently reported on low-concentration (17.5%) and short-duration applications and found significantly reduced cellular damage under in vitro conditions. [12][13][14] There is interest in RCTs to assess compounds with lower concentration that would comply with standards such as those of the European Community.…”

“…[7][8][9] These concentrations show similar effectiveness, and in some cases, much lower adverse post-procedure effects. However, only one report 10 have used a concentration permitted by the European Community. 4,11 In this report by Vano et al the patients do not achieve a change of at least 5 units DE, which was considered ineffective.…”

Evaluating a Cobalt‐Tetraphenylporphyrin Complex, Functionalized with a Reduced Graphene Oxide Nanocomposite, for Improved Tooth Whitening

“…18 Using activating agents (e.g., nanohydroxyapatite, Fe(III) phthalocyanine, hydroxyapatite) together with H 2 O 2 for tooth bleaching has been reported as effective. [19][20][21][22][23][24][25] Graphene (G), a new class of two-dimensional carbon nanostructure, has recently been extensively studied because of its high conductivity, large surface-tovolume ratio, and superior chemical and mechanical stability. Graphene oxide (GO), the oxidized form of graphene, has a two-dimensional plane and a large number of oxygen-containing functional groups with disorder on the basal plane and its edges.…”