Krishna Kumar Gupta

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—This paper presents a multilevel inverter that has been conceptualized to reduce component count, particularly for a large number of output levels. It comprises floating input dc sources alternately connected in opposite polarities with one another through power switches. Each input dc level appears in the stepped load voltage either individually or in(More)
Gingival recession in anterior teeth is a common concern due to esthetic reasons or root sensitivity. Gingival recession, especially in multiple anterior teeth, is of huge concern due to esthetic reasons. Various mucogingival surgeries are available for root coverage. This case report presents a new bridge flap technique, which allows the dentist not only(More)
Root exposure along with inadequate vestibular depth is a common clinical finding. Treatment option includes many techniques to treat such defects for obtaining predictable root coverage. Normally, the vestibular depth is increased first followed by a second surgery for root coverage. The present case report describes a single-stage technique for vestibular(More)
AIM The purpose of present study was to investigate the scanning electron microscopic alterations produced on scaled and root planed dentin surfaces after application of different etching modalities namely citric acid, tetracycline hydrochloride and ethylenediaminetetraacetic acid (EDTA). MATERIALS AND METHODS Eighty specimens of teeth were collected and(More)
Gingival enlargement related to pregnancy is sometimes seen in the oral cavity. Pregnancy is a physiological state that brings full of changes in a woman's life. The metabolism and immunology of the body are modified by progesterone and estrogen as well as other local factors, these sex hormones may modify the oral mucosa and may lead to various periodontal(More)
A male patient of 21 years of age reported to the Department of Periodontology and Implantology with a chief complain of pus discharge in both right and left upper lateral incisors. On clinical examination a deep pocket of about 10-14 mm was noticed in both lateral incisors. Radiographic interpretation shows a teardrop-shaped radiolucency in both the(More)
A clinical report describing the successful use of the lip repositioning technique for the reduction of excessive gingival display. A female patient aged 34 years reported with a chief complaint of gummy smile and was treated with this technique performed under local anesthesia with the main objective to reduce gummy smile by limiting the retraction of(More)
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