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Teeth Whitening Products Can Harm Protein-Rich Tooth Layer by Dentalgist: 6:42pm On May 01, 2019
In three new studies, researchers found that hydrogen peroxide, the active ingredient in over-the-counter whitening strips, can damage the protein-rich dentin tissue found beneath the tooth’s protective enamel.

Undergraduates working in the laboratory of Kelly Keenan, PhD, associate professor of chemistry at Stockton University in New Jersey, will present this research at the American Society for Biochemistry and Molecular Biology annual meeting during the 2019 Experimental Biology meeting to be held April 6-9 in Orlando, Fla.

The tooth is made of three layers: the outer tooth enamel, an underlying dentin layer and connective tissue that binds the roots to the gum. Most studies of whitening strips have focused on tooth enamel, which contains very little protein. Kennan’s research team focuses on dentin, which makes up most of the tooth and has high levels of protein, most of which is collagen.

It is well established that hydrogen peroxide can penetrate the enamel and dentin. Previous work by the researchers showed that collagen in the dentin layer decreased when teeth were treated with whitening strips.

“We sought to further characterize what the hydrogen peroxide was doing to collagen,” said Keenan. “We used entire teeth for the studies and focused on the impact hydrogen peroxide has on the proteins.”

In the new work, the researchers demonstrated that the major protein in the dentin is converted to smaller fragments when treated with hydrogen peroxide. In additional experiments, they treated pure collagen with hydrogen peroxide and then analyzed the protein using a gel electrophoresis laboratory technique that allows the protein to be visualized.

“Our results showed that treatment with hydrogen peroxide concentrations similar to those found in whitening strips is enough to make the original collagen protein disappear, which is presumably due to the formation of many smaller fragments,” said Keenan.

The researchers point out that their experiments did not address whether collagen and other proteins in the teeth can be regenerated, so it is unknown if the tooth damage is permanent. Next, they plan to further characterize the protein fragments released when collagen is treated with hydrogen peroxide and determine if hydrogen peroxide has the same impact on other proteins in the teeth.


https://dentalgist.ng/teeth-whitening-products-can-harm-protein-rich-tooth-layer

1 Share

Re: Teeth Whitening Products Can Harm Protein-Rich Tooth Layer by mayskit4luv(m): 11:31am On May 05, 2019
Ok
Re: Teeth Whitening Products Can Harm Protein-Rich Tooth Layer by BuyACar(f): 11:31am On May 05, 2019
What's the point of reading the content when the topic has given away everything?




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6 Likes

Re: Teeth Whitening Products Can Harm Protein-Rich Tooth Layer by Chimexopus247: 11:33am On May 05, 2019
grin
Re: Teeth Whitening Products Can Harm Protein-Rich Tooth Layer by Yewandequeen(f): 11:34am On May 05, 2019
BuyACar:
What's the point of reading the content when the topic has given away everything?
lazy girl

3 Likes

Re: Teeth Whitening Products Can Harm Protein-Rich Tooth Layer by meobizy(f): 11:34am On May 05, 2019
I knew this since 2008.
I discovered the natural colour of teeth was yellow in 2013.
I’m proud of my strong, healthy and yellow teeth.
We should leave teeth whitening to actors and similar celebrities.
I no get who I wan impress.

16 Likes 4 Shares

Re: Teeth Whitening Products Can Harm Protein-Rich Tooth Layer by Embee07: 11:34am On May 05, 2019
Dentalgist:
In three new studies, researchers found that hydrogen peroxide, the active ingredient in over-the-counter whitening strips, can damage the protein-rich dentin tissue found beneath the tooth’s protective enamel.

Undergraduates working in the laboratory of Kelly Keenan, PhD, associate professor of chemistry at Stockton University in New Jersey, will present this research at the American Society for Biochemistry and Molecular Biology annual meeting during the 2019 Experimental Biology meeting to be held April 6-9 in Orlando, Fla.

The tooth is made of three layers: the outer tooth enamel, an underlying dentin layer and connective tissue that binds the roots to the gum. Most studies of whitening strips have focused on tooth enamel, which contains very little protein. Kennan’s research team focuses on dentin, which makes up most of the tooth and has high levels of protein, most of which is collagen.

It is well established that hydrogen peroxide can penetrate the enamel and dentin. Previous work by the researchers showed that collagen in the dentin layer decreased when teeth were treated with whitening strips.

“We sought to further characterize what the hydrogen peroxide was doing to collagen,” said Keenan. “We used entire teeth for the studies and focused on the impact hydrogen peroxide has on the proteins.”

In the new work, the researchers demonstrated that the major protein in the dentin is converted to smaller fragments when treated with hydrogen peroxide. In additional experiments, they treated pure collagen with hydrogen peroxide and then analyzed the protein using a gel electrophoresis laboratory technique that allows the protein to be visualized.

“Our results showed that treatment with hydrogen peroxide concentrations similar to those found in whitening strips is enough to make the original collagen protein disappear, which is presumably due to the formation of many smaller fragments,” said Keenan.

The researchers point out that their experiments did not address whether collagen and other proteins in the teeth can be regenerated, so it is unknown if the tooth damage is permanent. Next, they plan to further characterize the protein fragments released when collagen is treated with hydrogen peroxide and determine if hydrogen peroxide has the same impact on other proteins in the teeth.


https://dentalgist.ng/teeth-whitening-products-can-harm-protein-rich-tooth-layer
ok
Re: Teeth Whitening Products Can Harm Protein-Rich Tooth Layer by classicalbenson(m): 11:35am On May 05, 2019
i stick to my charcoal....the safest for me
Re: Teeth Whitening Products Can Harm Protein-Rich Tooth Layer by BuyACar(f): 11:36am On May 05, 2019
Yewandequeen:
lazy girl

Oya, tell me what YOU read? grin

1 Like

Re: Teeth Whitening Products Can Harm Protein-Rich Tooth Layer by Officialgarri: 11:42am On May 05, 2019
tstx:
Carbohydrate rich tooth ni...


whitening my creamy brown teeth.. Abi is it darkish brown teeth sef.. I've forgotten... is One of the beat decision I've ever made in my life..




See my signature

What did you use. I'd like to get one
Re: Teeth Whitening Products Can Harm Protein-Rich Tooth Layer by ThothHermes: 11:45am On May 05, 2019
The natural colour of healthy teeth is yellow

Natural is not cute. No one likes it natural. cheesy
Re: Teeth Whitening Products Can Harm Protein-Rich Tooth Layer by Nobody: 11:48am On May 05, 2019
Plumpqueen:
Yes we know

Join my signature & thank me later tongue
Post your picture. Let's know if you are a she.
Re: Teeth Whitening Products Can Harm Protein-Rich Tooth Layer by bigcee(m): 12:11pm On May 05, 2019
tstx:
Carbohydrate rich tooth ni...


whitening my creamy brown teeth.. Abi is it darkish brown teeth sef.. I've forgotten... is One of the best decision I've ever made in my life..
What is the cost?
Re: Teeth Whitening Products Can Harm Protein-Rich Tooth Layer by Cooleasy(m): 12:23pm On May 05, 2019
classicalbenson:
i stick to my charcoal....the safest for me
Please kindly enlighten me: is it ordinary charcoal you use or any other type of charcoal (e.g. the one they call activated charcoal) ? Secondly how do you prepare and apply it?
Re: Teeth Whitening Products Can Harm Protein-Rich Tooth Layer by baike: 12:37pm On May 05, 2019
me that have yellow teeth how i my going to do
Re: Teeth Whitening Products Can Harm Protein-Rich Tooth Layer by JerryLegend(m): 12:42pm On May 05, 2019
Make teeth sha dey healthy and breaking of confirm brisket bone na koko grin
Re: Teeth Whitening Products Can Harm Protein-Rich Tooth Layer by mu2sa2: 12:46pm On May 05, 2019
meobizy:
I knew this since 2008. I discovered the natural colour of teeth was yellow in 2013. I’m proud of my strong, healthy and yellow teeth. We should leave teeth whitening to actors and similar celebrities. I no get who I wan impress.
God bless you, bro.
Re: Teeth Whitening Products Can Harm Protein-Rich Tooth Layer by buharitill2023: 12:53pm On May 05, 2019
no wonder my teeth is Strong and healthy, but yellowish, i use sensody rapid action.
Re: Teeth Whitening Products Can Harm Protein-Rich Tooth Layer by Mactons(m): 12:57pm On May 05, 2019
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Re: Teeth Whitening Products Can Harm Protein-Rich Tooth Layer by kygo(m): 1:04pm On May 05, 2019
Abeg wetin una use whiten teeth? please somebody should tell me
Re: Teeth Whitening Products Can Harm Protein-Rich Tooth Layer by idonhammer: 1:09pm On May 05, 2019
Officialgarri:
Stop smoking cigarettes and weed una no go hear.Now teeth done go igwenga
Re: Teeth Whitening Products Can Harm Protein-Rich Tooth Layer by Nobody: 1:21pm On May 05, 2019
meobizy:
I knew this since 2008.
I discovered the natural colour of teeth was yellow in 2013.
I’m proud of my strong, healthy and yellow teeth.
We should leave teeth whitening to actors and similar celebrities.
I no get who I wan impress.

mu2sa2:
God bless you, bro.

See dem dem undecided
Re: Teeth Whitening Products Can Harm Protein-Rich Tooth Layer by Snow02: 1:21pm On May 05, 2019
2 words activated charcoal
Re: Teeth Whitening Products Can Harm Protein-Rich Tooth Layer by HomeOfMe(f): 2:31pm On May 05, 2019
meobizy:
I knew this since 2008.
I discovered the natural colour of teeth was yellow in 2013.
I’m proud of my strong, healthy and yellow teeth.
We should leave teeth whitening to actors and similar celebrities.
I no get who I wan impress.
But using charcoal is harmless.
Re: Teeth Whitening Products Can Harm Protein-Rich Tooth Layer by meobizy(f): 2:42pm On May 05, 2019
HomeOfMe:
But using charcoal is harmless.
I forgot about that. Does it really whiten teeth or keep already white teeth in the same state?

1 Like

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