PubMed Health⌕ Search

SEARCH · PubMed Health

Results for “Tooth Bleaching”

Explore indexed PubMed citations for clinical trials, systematic reviews and public health research. Read source abstracts and follow each citation to its original PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 37 records · Page 2Linked to original sources
PubMed1992

Effect of cervical coating of ethyl cellulose polymer and metacrylic acid copolymer on the radicular penetration of hydrogen peroxide during bleaching.

Extraradicular leakage of oxidizing agents during bleaching is an undesirable event and thus need to be prevented. The effect of external cervical coating of ethyl cellulose (EC) and metacrylic acid copolymer (MAC) on the radicular penetration of hydrogen peroxide during intracoronal bleaching was examined. Single rooted human premolars extracted for orthodontic reasons were used. The cementum covering the cemento-enamel junction was mechanically removed and the teeth treated endodontically and bleached with 30% hydrogen peroxide. Radicular hydrogen peroxide penetration was measured before coating the teeth and after applications of 1-3 layers of EC or 3 layers of MAC external cervical coatings. It was found that the radicular penetration of 30% hydrogen peroxide was related to the number of layers of cervical EC coatings. Application of one layer of EC did not reduce the hydrogen peroxide penetration. Two and three layers of EC reduced the hydrogen peroxide penetration by 38% and 85% respectively. Three layers of MAC reduced the radicular hydrogen peroxide penetration in 83%. Statistically, a highly significant difference was found between the teeth coated with three layers of either EC or MAC and the noncoated teeth (p < 0.001). It was concluded that application of ethyl cellulose or metacrylic acid copolymer to exposed cervical root surfaces may effectively prevent extraradicular leakage of bleaching agents.

Cellulose↗
PubMed1975

Clinical evaluation of the sandpaper disk method for removing fluorosis stains from teeth.

The sandpaper disk method for removing fluorosis stains from teeth was clinically evaluated in 93 teeth in 22 patients. A bleaching solution was first applied to the teeth, and then a sandpaper disk in a straight handpiece was rotated on the stained enamel surface. None of the patients complained of discomfort during or after the bleaching procedure.

Adolescent↗
PubMed1992

History, safety, and effectiveness of current bleaching techniques and applications of the nightguard vital bleaching technique.

This article reviews the literature on the use of hydrogen peroxide in three professionally administered bleaching techniques from historical, technique, and safety viewpoints. Safety over time, absolute safety, and relative safety of nonvital bleaching, in-office vital bleaching, nightguard vital bleaching, and over-the-counter bleaching kits are compared. The advantages and disadvantages of different bleaching options, as well as indications for individual or combined use of the techniques, are discussed. In addition, specific indications for the use of the nightguard vital bleaching technique are presented.

Carbamide Peroxide↗
PubMedDate not supplied

Double-blind whitening Night-Guard study using ten percent carbamide peroxide.

The conservative technique of professionally dispensed and supervised, home-administered vital bleaching is now a routine treatment in the dental profession. This double-blind study evaluated the Rembrandt Lightening Gel and Whitening Toothpaste for shade change, colorimeter shade change. As well, it evaluated soft tissue health by periodontal probing, plaque index, and bleeding index. A patient questionnaire evaluated perception of whitening, perception of oral hygiene, average hours per day, and average days per week. Bleaching trays were worn over a 4-week period. The bleaching system showed definitive whitening effects as evaluated with the Vita shade guide and the colorimeter. The bleaching system had no deleterious effects on the soft tissue. The Rembrandt toothpaste alone demonstrated two-shade lightening. This vital bleaching system shows definitive whitening of the teeth in short periods of time with no adverse effects.

Carbamide Peroxide↗
PubMedDate not supplied

Bleaching and/or porcelain veneers: case reports.

Four case studies are presented in which the concept that bleaching, porcelain veneer restorations, or a combination of both constitute a conservative treatment approach for discolored, malformed, malaligned, and worn dentition. These treatments can be used effectively not only for aging dentitions, but also for the very young, which makes them an attractive treatment modality.

Adult↗
PubMed1992

A scanning electron microscopy study of the effect of bleaching agents on enamel: a preliminary report.

The effect of bleaching agents on the enamel surface was examined by scanning electron microscopy. The comparison of treated to untreated enamel revealed that the treated surface had increased surface change and porosity after the equivalent of 30 hours of exposure to the bleaching agent. The degree of alteration of enamel surface was not uniform and was influenced by cleanliness (oral hygiene) of the treated teeth and apparent variation in calcification. The enamel surface developed varying degrees of surface porosity and alteration.

Acid Etching, Dental↗
PubMedDate not supplied

Vital bleaching: a new light-activated hydrogen peroxide system.

With ever increasing interest in cosmetic enhancement of dentition by dentists and patients alike, this article introduces a new light-activated bleaching system that adds up to total patient satisfaction and reduced chair time. The chairside application of hydrogen peroxide 30% was effective in lightening a moderate case of tetracycline staining. The uniqueness of this system allows the practitioner complete control within an office setting, and it provides the patient with an immediate result. The ease of application and strict supervision of a dentist has allowed this system to satisfy recent watchdogs of the Federal Drug Administration.

Adult↗
PubMed1992

The laboratory and clinical safety evaluation of a dentifrice containing hydrogen peroxide and baking soda.

This study reports the laboratory, clinical, and microbiological finding of the safety testing and daily use of a dentifrice delivering 0.75% hydrogen peroxide and 5% baking soda. Laboratory studies using Ca45 labeled teeth and biologically stained teeth confirmed that the dentifrice did not decalcify enamel or bleach teeth. Over the course of a six-month period, 62 subjects using a hydrogen peroxide-baking soda dentifrice and 21 subjects using a control dentifrice were examined for oral soft tissue change and hard tissue alterations. No soft tissue changes attributable to the use of either dentifrice were noted. Experienced clinicians using Trubyte shade guide teeth observed no significant changes to the subjects' anterior teeth following 6 months use of the test dentifrice. Paired discrimination tests revealed that the examiners could distinguish color differences in the shade guide teeth at 0.7%. Microbiological monitoring of the subjects for six months use of their assigned dentifrice and for the following months on the control dentifrice, revealed neither an increased incidence of candida nor increased candida counts.

Adult↗
PubMedDate not supplied

Bleaching teeth: history, chemicals, and methods used for common tooth discolorations.

This article reviews the history of bleaching teeth to lighten tooth color. The last 2 years have seen a dramatic increase in new bleaching methods and bleaching chemicals. The following categorizes bleaching chemicals and methods in relation to their use in treating common tooth discolorations. Special attention is given to home bleaching methods.

Carbamide Peroxide↗
PubMed2026

Influence of Immediate Post-Bleaching Polishing on Enamel Color, Morphology, and Sensitivity: A Randomized Clinical Trial.

OBJECTIVE: This study evaluated the influence of polishing on enamel color change after in-office bleaching treatment on tooth morphology and sensitivity. MATERIALS AND METHODS: A total of 50 volunteers were randomized into two groups (n&#x2009;=&#x2009;25): in-office bleaching with 35% hydrogen peroxide gel for 45&#x2009;min without polishing (GSEM) or with polishing (GP). Color analysis was performed four times, at the beginning of the starting line and immediately after the first, second, and third bleaching sessions with a spectrophotometer. A qualitative analysis of enamel morphology was performed under a scanning electron microscope. Tooth sensitivity was assessed daily using the Visual Analog Scale (&#x3b1;&#x2009;=&#x2009;0.05). RESULTS: There was no statistically significant difference (p&#x2009;>&#x2009;0.05) in tooth color change when comparing &#x394;E, &#x394;E00, and &#x394;WID between the groups. The enamel surface showed larger areas of irregularities and depressions in the GP group than in the GSEM group. There was no difference in tooth sensitivity (p&#x2009;>&#x2009;0.05) between the groups. CONCLUSIONS: Polishing after whitening in the office does not change the color and sensitivity of the tooth but promotes greater changes in the morphology of the enamel, such as increased surface roughness. CLINICAL RELEVANCE: Polishing immediately after teeth whitening causes greater changes in enamel surface morphology.

Humans↗