The degradation of the AB1 dye by electro-generated species using a BDD electrode was performed. The results were explained by the generation of OH radical, S2O8 in the presence of sulfate, and active halide species in the presence of halide salt. The discoloration rate increases in this order: sulfate, KCl, KBr. In the presence of KCl, the discoloration is affected by the current density, init...

A longitudinal complicated crown-root fracture of an unerupted permanent incisor following trauma to primary teeth is reported. The development of the affected permanent tooth was not disturbed during a follow-up period of six years. Traumatic injuries to primary teeth can be transmitted to the permanent dentition because of the close relationship between the apices of primary teeth and the dev...

Tetracyclines were used extensively in the 1950s and 1960s as a broadI~c t rum antibiotic against many infections. In 1958, their adverse dental effects were reported? Studies in Ne following two decades have con'firmed that tetracyclines administered during tooth development could disturb enamel formation and cause dentin discoloration. 2-s A number of clinical methods have been considered to ...

Craniometaphysial dysplasia (CMD) is a rare disorder that mainly affects craniofacial bones. It is caused by mutations within a region of human homolog (Ankh) of the mouse progressive ankylosis (Ank) gene. ANK, together with other factors, regulates intracellular and extracellular levels of pyrophosphate/inorganic phosphate critical for maintaining mineral homeostasis. The systemic manifestatio...

The aim of this study was to test whether veneering of the submucosal part of zirconia abutments using pink veneering ceramic positively influences the color of the peri-implant mucosa. Single-tooth implants were restored with either white zirconia abutments (control group) or pink-veneered zirconia abutments and all-ceramic crowns. Esthetic outcome measurements included a spectrophotometric ev...

OBJECTIVE To evaluate the relationship between early white discoloration of infantile hemangioma (IH) and ulceration. DESIGN Retrospective cohort study. SETTING Tertiary referral center. PATIENTS A case series of 11 infants with early white discoloration of IH are described. An additional 55 infants with IH, aged 3 months, were evaluated retrospectively from a photograph archive to furthe...

OBJECTIVE The purpose of this study was to evaluate the clinical performance of a new colored compomer material, Twinky Star, in primary molars. SUBJECTS AND METHODS Eighty class II restorations were placed in a total of 36 subjects and the clinical success of the restorations was evaluated after 12 months based on modified US Public Health Services criteria. RESULTS The failure rate of the...