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At least 667 records · Page 37Linked to original sources
PubMed1990

[Will discolored molar fissures within 4 years become carious more frequently than nondiscolored ones? Observations from 1975 to 1988].

Caries progression was studied in 5242 first molar fissures of children in the Canton of Zurich, Switzerland, in two observation periods, extending from 1975/76 to 1979/80 and from 1983/84 to 1987/88, respectively. DFT averages at age 12 in the children studied were fairly low, being 3.60 in 1975/76 and 2.21 in 1983/84. Fissures of first molars were classified as completely sound (Grade 0), discolored (Grades 1 and 2) or DF. An exploratory cross-sectional analysis revealed that there is a slow and linear increase of the percentage of DF fissures with increasing age. During the period 1975/76 to 1979/80, Grade 0 fissures became DF with a probability of 14 to 22% while 42 to 54% of the dark brown or black discolored fissures (Grade 2) were DF after four years. In the period 1983/84 to 1987/88, these percentages were lower. It was concluded that in this population with low caries activity there is little reason to apply preventive measures to fissures immediately after their eruption or later to those free from any discoloration.

Child↗
PubMed2000

Enamel microabrasion: a new approach.

Enamel microabrasion is a proven method of removing superficial intrinsic enamel discoloration defects. The method is safe, easily performed, and causes no discomfort for the patient. A new commercially available microabrasion system has been introduced by Ultradent Products Inc. In addition, a new tooth isolation material is available, along with a visible light-activated in-office hydrogen peroxide solution. This article describes these new products and documents tooth-color correction for two young patients using this new tooth-color correction approach.

Cariostatic Agents↗
PubMed1992

[Vitiligo and white dental discoloration].

Vitiligo is a common dermatological manifestation of obscure etiology, affecting mostly healthy people. It has also been observed in association with sunburn, various chemicals, repeated friction, physical trauma, and numerous systemic and cutaneous diseases. However, white discoloration of teeth in these patients has not yet been reported. We describe a 14-year-old boy with vitiligo who presented with white patches on the surface of his upper, central incisors. Medical history and laboratory tests excluded those complications documented in the literature known to be associated with white discoloration of the teeth, such as disturbances of calcium and phosphate metabolism (as in vitamin D refractory rickets), hypoparathyroidism, gastroenteritis, celiac disease, premature birth, hyperplasia of the enamel and prolonged ingestion during tooth formation of water containing excessive fluoride.

Adolescent↗
PubMed1981

Staining calcified dental tissues with food.

The discoloration of enamel caused by food substances was found to be superficial and for dentin and cementum ingressive. Discoloration of cementum exceeded that of dentin, and dentin stained more than enamel. Coffee and soy sauce stained the calcified dental tissues more than the cola beverage and tea. The longer the staining time, the deeper was the discoloration.

Carbonated Beverages↗
PubMed1988

Postmortem pink teeth: in vitro production.

The aim of this study was to produce pink teeth experimentally with cadaver blood and to correlate the time sequence of the coloration with the pattern of hemolysis of the blood. The blood from 7 cadavers (postmortem period 8-58 h) was used to stain 7 groups of 14 teeth each. All the teeth were divided longitudinally and one half received blood which contained a piece of skin (to imitate pulpal autolysis) and the other half cadaver blood only. Circumpulpal discoloration commenced on the sixth day postmortem and increased to 18 days. At 6 days, hemolysis was evident histologically and the separation between plasma and blood cells had disappeared in centrifuged blood. No difference was noticed between the blood with and without skin. It is concluded that pink staining of teeth can only occur after hemolysis and that discoloration becomes obvious macroscopically at about 6 days.

Dental Pulp Necrosis↗
PubMed1978

[The abrasion of amalgam and composites in the lateral dental region].

In 41 patients class 11 cavities each of the lower jaw were filled with the materials Adaptic, Concise cap, Epoxydent or amalgam. The models made from impressions were systemically measured by a coordinate measuring machine according to a procedure determined by us (measuring error of this method about 15 micron). After one year the following abrasions were found: amalgam 18 micron +/- 58 micron, Adaptic 92 micron +/- 97 micron, Concise Cap 146 micron +/- 75 micron, Epoxydent 38 micron +/- 50 micron. Evaluation of the clinical examination showed that the materials Concise and Epoxydent were significantly inferior as regards border closure than amalgam and Adaptic. We determined further that a large percentage of composite filling showed visible discoloration of the borders (Adaptic 42%, Concise 55%, Epoxydent 80%). Many of the fillings were discolored after a year. Adaptic was highly significantly different with 31.6% discolored fillings to both other materials (Concise 79%, Epoxydent 78.4%).

Bicuspid↗
PubMed1995

Minocycline-induced hyperpigmentation.

A 70-year-old man developed hyperpigmentation of his forearms, hands, fingernails, sclerae, ears, and teeth after 9 years of therapy with minocycline for acne rosacea. Minocycline is widely used in the treatment of acne vulgaris and uncommonly produces the side effect of hyperpigmentation. This effect does not appear to be dose-dependent and usually resolves within months to years after discontinuation of therapy. Discoloration of adult teeth, however, is generally permanent.

Aged↗
PubMed1990

Enamel microabrasion for removal of superficial dysmineralization and decalcification defects.

Enamel surface "dysmineralization" can be defined as a disturbance in formation of the inorganic component of enamel during amelogenesis. Enamel microabrasion, a method of removing certain enamel dysmineralization and decalcification coloration defects, is described. In many cases, with insignificant and unrecognizable loss of enamel, superficial enamel discoloration defects can be permanently eliminated, improving the appearance of treated teeth.

Dental Enamel↗
PubMedDate not supplied

Indirect porcelain veneer technique for restoring intrinsically stained teeth.

Indirect porcelain veneers are often the ideal restoration for intrinsically stained teeth. This article details a step-by-step procedure for esthetically restoring discolored teeth. Porcelain laminate veneers are often indicated when teeth bleaching or direct composite bonding procedures cannot provide the desired esthetic result. Veneers are more appealing to many patients than full coverage crowns because of the more conservative tooth preparation required. If technique details are followed meticulously and cases are appropriately selected, porcelain veneers are not only durable but also promote marvelous gingival health and may be the most esthetic anterior dental restoration.

Adult↗