Searched for: person:BP1
Pit and fissure sealants. Current status
Park, K; Penugonda, B
Occlusal pits and fissures continue to frustrate dentists battling to control decay. Several techniques being studied now offer hope of eventually eliminating caries in these areas
PMID: 1533446
ISSN: 0028-7571
CID: 151940
At-home vital bleaching: effects on stained enamel and dentin
Scherer, W; Penugonda, B; Styner, D; Georgescu, M
In a scanning electron microscope study evaluating the effects of a 10% carbamide peroxide gel on stained enamel and dentin, no surface morphologic changes were observed after 72 hours of contact with the bleaching gel
PMID: 1525369
ISSN: 1042-2722
CID: 151937
Bonding composite to glass ionomer with adhesive resin cements
Styner, D; Scherer, W; LoPresti, J; Penugonda, B
This study was to determine the bond strength of composite to glass ionomer using the following adhesive resin cements: Imperva Dual, CB Metabond, All-Bond, Geristore, and Panavia. All materials were mixed following the manufacturer's specifications. Bonded samples were thermocycled for 2000 x between 5 degrees C and 55 degrees C. Shear bond strengths were determined using an Instron Testing Machine. No statistical differences were noted between materials at the p < .05 level of significance. In addition, scanning electron micrographs were taken of the primed glass ionomer surfaces. These micrographs revealed varying amounts of matrix dissolution along with roughened surface topographies
PMID: 1298317
ISSN: 1040-1466
CID: 151915
Bonding Ni-Cr alloy to tooth structure with adhesive resin cements
Penugonda, B; Scherer, W; Cooper, H; Kokoletsos, N; Koifman, V
This study was to determine the shear bond strengths of Ni-Cr alloy to Ni-Cr alloy (Group I), Ni-Cr alloy to enamel (Group II), and Ni-Cr alloy to dentin (Group III) using Imperva Dual, DC Metabond, All-Bond, Geristore, and Panavia. All bonded specimens were thermocycled 2000 x (5 degrees C-55 degrees C) after 24 hours and subjected to shear bond testing on a Universal Instron Testing Machine. In all groups of the study, Imperva Dual and CB Metabond had significantly (p < .05) higher bond values than Panavia
PMID: 1298320
ISSN: 1040-1466
CID: 151916
Profilometer, SEM, and visual assessment of porcelain polishing methods
Goldstein, G R; Barnhard, B R; Penugonda, B
Research has indicated that polishing ground porcelain is essential to control the wear of opposing occlusal surfaces and reduce the inflammation of contacted soft tissue. Five popular methods for polishing porcelain were evaluated by use of a profilometer, SEM, and normal vision. Seventy disks, 35 Biobond disks and 35 Ceramco disks, were roughened with a green stone and polished with one of the methods according to the manufacturers' directions. Brasseler, Dedeco, Dentsply, and Shofu porcelain polishing systems were suitable for restoring ground porcelain. However, clinical evaluations correlated to the profilometer and SEM readings revealed that the Brasseler system was superior for polishing Ceramco porcelain whereas the Den-Mat system was unacceptable
PMID: 2051383
ISSN: 0022-3913
CID: 151998
Mounting a maxillary cast transversely horizontal and constructing a plane of occlusion bilaterally symmetrical
Zelnigher, J; Ravinett, S; Penugonda, B; Kriser, D B
This article discusses a technique for mounting a maxillary cast to any semiadjustable articulator using the dentaplane. The dentaplane is a precision device that divides the articulator space into approximately equal upper and lower halves when attached to the lower member. The dentaplane mounts the maxillary cast with a transverse orientation that replicates conditions in a patient's head
PMID: 2386985
ISSN: 0894-1009
CID: 152002
SURFACE EVALUATIONS OF DIE STONE MATERIAL WITH AND WITHOUT COATINGS [Meeting Abstract]
PENUGONDA, B; PINES, MS; VIJAYARAGHAVAN, TV; SCHULMAN, A
ISI:A1990CM01502069
ISSN: 0022-0345
CID: 154562
Reinforced glass ionomer cement vs. zinc phosphate cement. An interface study
Scherer, W; Kaim, J M; Ferretti, A; Ehrlich, B; Penugonda, B
PMID: 2403666
ISSN: 0028-7571
CID: 152003
A method to identify and correct overextended denture borders
Zelnigher, J; Ravinett, S; Penugonda, B
This paper will present a method of correcting a processed denture for overextension and overwaxup in order to give the patient added comfort and the denture added retention
PMID: 2700682
ISSN: 0894-1009
CID: 152009
TRAY PERFORATION EFFECTS ON THE RENTENTION OF PVS IMPRESSION MATERIAL [Meeting Abstract]
PINES, M; PENUGONDA, B; VAIDYANATHAN, TK; SCHULMAN, A
ISI:A1987G148500278
ISSN: 0022-0345
CID: 154575