A pyrene-fused phenazinothiadiazole that shows electron mobilities (μe = 0.016 cm(2) V(-1) s(-1)) two orders of magnitude higher than those reported for pyrene-fused pyrazaacenes is described.

Relevance. Riga-Fede disease (RFD) is a rare pathology that develops as result of trauma to the mucous membrane tongue ventral surface with sharp edges natal, neonatal or primary teeth erupting in time and manifests form erosion sublingual fibrous lesion an ulcerated surface. Purpose. To analyze literature present our own RFD clinical cases. Material methods. A search was performed articles pub...

Caries can be controlled by the early treatment of the carious lesion, by alteration of conditions upon the tooth surface and by dietary means during the period of tooth formation. The incidence of dental caries is influenced by a large number of factors. After the teeth have erupted, local conditions on the surface of the teeth have the greatest influence, but tooth structure is of considerabl...

hyperdontia or supernumerary teeth in both arches without any syndromic manifestation are extremely rare. supernumerary teeth are commonly associated with gardner’s syndrome, cleft lip and palate, cleidocranial dysplasia and trichorhinophalangeal syndrome. five cases of non-syndromic multiple premolars of maxillary and mandibular arches in indian patients are presented here. this case series re...

statement of problem: knowledge of internal anatomy of tooth plays an important role in a successful endodontics treatment. for a proper endodontic treatment, it is not only important to know the form of normal anatomy of tooth’s interior but one must also be acquainted with the possible diverse forms. purpose: a thorough understanding of the internal anatomy of human mandibular incisors (centr...

A novel Ag(I)-induced three-component annulation reaction of [60]fullerene with sulfonylhydrazones and nitriles has been developed for the efficient synthesis of diverse disubstituted [60]fullerene-fused dihydropyrroles. The reaction exhibits a broad substrate scope and excellent functional-group tolerance, and also allows for the synthesis of fullerene-bound macromolecules.

Background: A natal tooth is a that present at the time of birth. Eruption teeth in infants rare phenomenon. Though rare, and neonatal must be looked upon with great importance because they may lead to many complications. Case report: We case four-day old baby presenting mandibular tooth, which was successfully extracted without an...

Molar incisor hypomineralization (MIH) is an enamel defect in permanent first molar and inci-sor teeth. The defects may vary from white, to yellow-brown demarcated opacities that may easily break (post-eruptive breakdown) and results in extensive caries or early extraction of the teeth. The unaesthetic appearance of anterior teeth, sensitivity, pain, and difficulties in achieving local anesthes...

Riga-fede disease is a rare pediatric condition in which chronic lingual ulceration results from repetitive trauma. Ventral surface of tongue is often the most common site affected. The natal and neonatal teeth have often beaning reported to cause ulceration on the ventral surface of the tongue in neonates and infants. In the present case report 20 days Old female infant presented by parents to...

Tooth development results from sequential and reciprocal interactions between the oral epithelium and the underlying neural crest-derived mesenchyme. The generation of dental structures and/or entire teeth in the laboratory depends upon the manipulation of stem cells and requires a synergy of all cellular and molecular events that finally lead to the formation of tooth-specific hard tissues, de...