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At least 1,153 records · Page 64Linked to original sources
PubMed2006

[Study of influence of endoopalescence on the solid tissue by means of raster microscope].

During the process of endowhitening as a result of penetration of peroxide into dentine tubules the adhesion of tooth tissues sharply decreases, it requires the delay of restoration by filling for several days. Surely it is not comfortable for the patient. The best way out is the application of antioxidants after whitening. Under their influence the sedimentary layer on the hard tissues of the teeth neutralizes much quicker. The urgency of this issue is preconditioned by the fact that under the influence of antioxidant the restored adhesiveness enables the immediate restoration of tooth. Our previous experiment is the good proof of that. In the experiment we studied the level of micro leakage and origination of microfissures by effecting with antioxidant, precisely with 10% sodium ascorbate on the hard tissues of tooth after using the whitening agent. As a result of this experiment we have not obtained any microfissure in the teeth covered with antioxidant unlike those teeth where we had not used the antioxidant. According to the reference data it is known that after acide angraving there occurs the removing of adhesive layer from the enamel and dentin of tooth. As a result of this the prisms of enamel and the dentine tubules are widened and this creates condition for the further penetration of the primer of the adhesive system. This process is followed by the origination of transitional i.e. hybrid layer. The latter one is the best link for the adhesive tar and tooth tissues. Modern investigations in the esthetic stomatology prove that the whitening agents produce the peroxide molecules during the process of whitening. These molecules cause the widening of the tooth enamel prisms. We also studied the results of post endo-whitening influence of peroxidation processes on the enamel and dentine of tooth by means of the raster microscope. Studies by electron microscope showed that the antioxidant - 10% sodium ascorbate was characterized by high penetration and was equally distributed in the dentine. It totally covered the dentine, actively interacted with the peroxide accumulated in the tubules and caused their neutralization. In the II experimental group, most parts of the dentine tubules were tightly obturated, it originated the strong hybrid circle and the fissure was not observed in any of it's areas. It may be concluded that the adhesiveness disturbed as a result of peroxidation processes improved by their neutralization by means of antioxidant that accelerated the terms of filling postponed after the application of whitener enabled the immediate filling of the tooth. Development of strong hybrid layer on the electron-diffraction pattern of teeth of this group without the microfissure is the precondition for successful therapy.

Dental Enamel↗
PubMed2006

The impact of the popular media on cosmetic dentistry.

UNLABELLED: The popular media's influence on social norms with respect to people's appearance is likely to have played a part in the recent growth of cosmetic dentistry. AIMS: This study was designed to investigate the manner in which the popular media have affected the perception and delivery of aesthetic dentistry in New Zealand. METHODS: A nationwide survey was posted to a random sample of 600 general dental practitioners (GDPs) requesting sociodemographic details and information on the types of aesthetic dental procedures provided and the demand for those. Information was also sought on GDPs' awareness of television programmes and reality "makeover" television shows (such as "Extreme Makeover") covering issues related to aesthetic dentistry, together with the impact of such programmes (and that of different print media) on their patients' perceptions of, and demand for, aesthetic dentistry. RESULTS: The response rate was 81.2 percent. A majority of participants perceived an increased demand for tooth whitening (77.8 percent) and veneers (54.8 percent) subsequent to the airing of those television programmes, with 85.2 percent reporting patients mentioning "Extreme Makeover" in relation to aesthetic dentistry. Some 56.8 percent believed that patients had higher aesthetic expectations subsequent to the airing of that programme. An increased demand for tooth whitening was reported by more female than male GDPs, and also by younger practitioners and those who were practising in larger centres. Similar patterns were observed with respect to GDPs recommending tooth whitening for patients. Women's magazines were ranked by GDPs as having the highest impact on patients' perceptions of aesthetic dentistry. CONCLUSION: The popular media (especially television) appear to have had an impact on the demand for various aesthetic dental procedures in New Zealand.

Age Factors↗
PubMed2005

Treating sensitivity during tooth whitening.

The most common side effect of tooth whitening is tooth sensitivity. There are a number of materials and techniques for reducing sensitivity. This article focuses on potassium nitrate applied either by brushing before initiating whitening or by application via a tray during whitening to reduce sensitivity. A detailed step-by-step procedure for managing hypersensitive patients is described.

Dentin Sensitivity↗
PubMed2005

Tooth sensitivity and whitening.

This article presents a review of the basic concepts of tooth sensitivity and how those concepts apply to cervical dentin hypersensitivity and the sensitivity frequently associated with tooth whitening. The etiology and treatment of cervical dentin hypersensitivity are described. The clinical presentation, incidence, and predisposing factors for sensitivity associated with tooth whitening also are discussed.

Dentifrices↗
PubMed2006

Clinical trials and oral care R&D.

The introduction of hydrogen peroxide whitening strips in 2000 has contributed to new paradigms for treatment and expanded interest in tooth whitening. Clinical trials played a prominent role in the whitening strip research and development process. Four case studies from the whitening strip development program are used to review the fundamentals of clinical trials design, conduct, analysis, and interpretation as part of new product development in oral care.

Clinical Trials as Topic↗