Fusion is one of the developmental dental anomalies in which two adjacent teeth are joined at the crown level forming a single tooth with an enlarged crown. Fusion causes some clinical problems such as unaesthetic appearance, pain, caries, and malocclusion. The management of fusion often needs multidisciplinary approach to give best possible esthetic and functional outcome. This paper reports a...

The intramolecular dipolar cycloaddition of an azide with an alkyne has provided a useful entry into triazole fused tricyclic heterocycles containing both the triazole ring and the oxazolidin-2-one ring system. The requisite azido-alkynes have been prepared via a two-step sequence from fused ring aziridines. A series of 6-12 membered rings containing both the oxazolidinone and triazole rings ha...

Increasing interests have been invested in the development of synthetic strategies toward the construction of spiro[pyrrolidine-2,3'-oxindole], which is the core structural skeleton in some compounds with diverse biological activities. In this work, an efficient diastereoselective 1,3-dipolar cycloaddition reaction of azomethine ylides generated in situ from 3-amino oxindoles and aldehydes with...

A case of bilateral fusion is presented, the definitions of fusion and gemination are reviewed, as well as the diagnostic criteria. The clinical implications of fused teeth include the probability of loss of arch length, caries susceptibility of the fissure, and missing corresponding permanent incisors. Introduction In 1963 Tannenbaum and Ailing, defined gemination as the formation of the equiv...

The occurrence of dental abnormalities affecting both the primary and permanent dentition in children with oral clefts has been well documented.1-5 These abnormalities can be in the number, morphology, or eruption pattern of the teeth and are more frequent in children with clefts than in children without clefts.1 Specifically, both supernumerary and fused teeth have been shown to occur with gre...