Quasi-two-dimensional optomechanical crystals with a complete phononic bandgap

A fully planar two-dimensional optomechanical crystal formed in a silicon microchip is used to create a structure devoid of phonons in the GHz frequency range. A nanoscale photonic crystal cavity is placed inside the phononic bandgap crystal in order to probe the properties of the localized acoustic modes. By studying the trends in mechanical damping, mode density, and optomechanical coupling strength of the acoustic resonances over an array of structures with varying geometric properties, clear evidence of a complete phononic bandgap is shown.Comment: 9 pages, 7 figure

Dentigerous Cyst Associated with Ectopic Canine and a Supernumerary Tooth: A Rare Occurrence

Amongst the cysts of the jaw dentigerous cyst (DC) is one of the most prevalent types of odontogenic cysts, which is associated with the crown of an unerupted or developing tooth. DC is more commonly seen with mandibular  third molar and maxillary canine and rarely other teeth are involved. These cysts seldom associate with supernumerary teeth. The purpose of this article is to describe a case of large dentigerous cyst associated with supernumerary teeth and an ectopic canine, which is a rare presentation along with its management.Key words: Dentigerous cyst, ectopic teeth, supernumerary teet

Accidental identification of thrombocytopenia

Among all bleeding disorders, the idiopathic thrombocytopenia is uncommon disorder. The main aspect is drop in platelet count. The associated symptoms are bruising with minor trauma, ecchymosis, hemorrhagic areas and hematomas, which correlate with count of platelets. There are so many factors which contribute to its development and they are preceded to the signs and symptoms. In this case, there is no such a contributing part which will help to reach the diagnosis, where a 65-year-old woman with average height and built reported in our dental office with intraoral bleeding since past 5 hours- There is no significant history except drug- After managing the oozing of blood, we referred the patient for blood investigations that revealed the idiopathic thrombocytopenia. This can be fatal, if attention is not paid within time. Hence, during clinical examination, each case is special and one should have the basic knowledge of systemic diseases