Surface changes and acid dissolution of enamel after carbamide peroxide bleach treatment

S. T. Yeh, Y. Su, Y. C. Lu, S. Y. Lee

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

Objectives: To evaluate the effects of home bleaching (carbamide peroxide) on enamel surface morphology and the degree of acid dissolution. Methods: Buccal surfaces of 15 caries-free human premolars were used in the study. The 15 teeth were cut in half in a buccal-lingual direction at midline; in total, 15 pairs of specimens were obtained. Group A consisted of five pairs that studied surface morphology change and Group B consisted of 10 pairs that studied the susceptibility of bleached enamel to acid dissolution. Tooth halves were prepared following a fluoride-free prophylaxis paste cleaning. One half of the tooth was untreated (control), and the other half was bleached (experimental) for eight hours daily for 10 days using 10% carbamide peroxide. Tooth samples were then stored in distilled water for seven days, after which scanning electron microscopy (SEM) was performed on Group A. Only halves from the same tooth were compared to rule out natural variations between teeth. Group B was etched with 37% phosphoric acid before being examined by SEM. The severity of the acid attack was graded from I to V, and the grades of each pair were compared. Results: Results of the SEM observation showed that surface porosity slightly increased after bleaching, and more surface dissolution by phosphoric acid was seen with bleached, compared to unbleached, enamel.

Original languageEnglish
Pages (from-to)507-515
Number of pages9
JournalOperative Dentistry
Volume30
Issue number4
Publication statusPublished - Jul 2005

Fingerprint

Dental Enamel
Tooth
Acids
Electron Scanning Microscopy
Cheek
Porosity
Bicuspid
Ointments
Fluorides
Tongue
carbamide peroxide
Observation
Water

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Surface changes and acid dissolution of enamel after carbamide peroxide bleach treatment. / Yeh, S. T.; Su, Y.; Lu, Y. C.; Lee, S. Y.

In: Operative Dentistry, Vol. 30, No. 4, 07.2005, p. 507-515.

Research output: Contribution to journalArticle

@article{1047288935e64125b500ba6948360355,
title = "Surface changes and acid dissolution of enamel after carbamide peroxide bleach treatment",
abstract = "Objectives: To evaluate the effects of home bleaching (carbamide peroxide) on enamel surface morphology and the degree of acid dissolution. Methods: Buccal surfaces of 15 caries-free human premolars were used in the study. The 15 teeth were cut in half in a buccal-lingual direction at midline; in total, 15 pairs of specimens were obtained. Group A consisted of five pairs that studied surface morphology change and Group B consisted of 10 pairs that studied the susceptibility of bleached enamel to acid dissolution. Tooth halves were prepared following a fluoride-free prophylaxis paste cleaning. One half of the tooth was untreated (control), and the other half was bleached (experimental) for eight hours daily for 10 days using 10{\%} carbamide peroxide. Tooth samples were then stored in distilled water for seven days, after which scanning electron microscopy (SEM) was performed on Group A. Only halves from the same tooth were compared to rule out natural variations between teeth. Group B was etched with 37{\%} phosphoric acid before being examined by SEM. The severity of the acid attack was graded from I to V, and the grades of each pair were compared. Results: Results of the SEM observation showed that surface porosity slightly increased after bleaching, and more surface dissolution by phosphoric acid was seen with bleached, compared to unbleached, enamel.",
author = "Yeh, {S. T.} and Y. Su and Lu, {Y. C.} and Lee, {S. Y.}",
year = "2005",
month = "7",
language = "English",
volume = "30",
pages = "507--515",
journal = "Operative Dentistry",
issn = "0361-7734",
publisher = "Indiana University School of Dentistry",
number = "4",

}

TY - JOUR

T1 - Surface changes and acid dissolution of enamel after carbamide peroxide bleach treatment

AU - Yeh, S. T.

AU - Su, Y.

AU - Lu, Y. C.

AU - Lee, S. Y.

PY - 2005/7

Y1 - 2005/7

N2 - Objectives: To evaluate the effects of home bleaching (carbamide peroxide) on enamel surface morphology and the degree of acid dissolution. Methods: Buccal surfaces of 15 caries-free human premolars were used in the study. The 15 teeth were cut in half in a buccal-lingual direction at midline; in total, 15 pairs of specimens were obtained. Group A consisted of five pairs that studied surface morphology change and Group B consisted of 10 pairs that studied the susceptibility of bleached enamel to acid dissolution. Tooth halves were prepared following a fluoride-free prophylaxis paste cleaning. One half of the tooth was untreated (control), and the other half was bleached (experimental) for eight hours daily for 10 days using 10% carbamide peroxide. Tooth samples were then stored in distilled water for seven days, after which scanning electron microscopy (SEM) was performed on Group A. Only halves from the same tooth were compared to rule out natural variations between teeth. Group B was etched with 37% phosphoric acid before being examined by SEM. The severity of the acid attack was graded from I to V, and the grades of each pair were compared. Results: Results of the SEM observation showed that surface porosity slightly increased after bleaching, and more surface dissolution by phosphoric acid was seen with bleached, compared to unbleached, enamel.

AB - Objectives: To evaluate the effects of home bleaching (carbamide peroxide) on enamel surface morphology and the degree of acid dissolution. Methods: Buccal surfaces of 15 caries-free human premolars were used in the study. The 15 teeth were cut in half in a buccal-lingual direction at midline; in total, 15 pairs of specimens were obtained. Group A consisted of five pairs that studied surface morphology change and Group B consisted of 10 pairs that studied the susceptibility of bleached enamel to acid dissolution. Tooth halves were prepared following a fluoride-free prophylaxis paste cleaning. One half of the tooth was untreated (control), and the other half was bleached (experimental) for eight hours daily for 10 days using 10% carbamide peroxide. Tooth samples were then stored in distilled water for seven days, after which scanning electron microscopy (SEM) was performed on Group A. Only halves from the same tooth were compared to rule out natural variations between teeth. Group B was etched with 37% phosphoric acid before being examined by SEM. The severity of the acid attack was graded from I to V, and the grades of each pair were compared. Results: Results of the SEM observation showed that surface porosity slightly increased after bleaching, and more surface dissolution by phosphoric acid was seen with bleached, compared to unbleached, enamel.

UR - http://www.scopus.com/inward/record.url?scp=22944434852&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=22944434852&partnerID=8YFLogxK

M3 - Article

C2 - 16130872

AN - SCOPUS:22944434852

VL - 30

SP - 507

EP - 515

JO - Operative Dentistry

JF - Operative Dentistry

SN - 0361-7734

IS - 4

ER -