Effect of Different Casting Techniques on the Castability of Nickel-Chromium Alloy
Journal Title: Current Journal of Applied Science and Technology - Year 2017, Vol 20, Issue 4
Abstract
Statement of Problem: Castability plays an important role in success and failure in the field of restorative and prosthetic dentistry. Recasting of base metal alloys can alter its castability value and some of its physical properties. Aim: To evaluate the castability of new and recasted Ni-Cr alloy using conventional ring and ringless casting system and compare the results. Place and Duration of Study: Department of Prosthodontics and crown and bridge, KLE V.K. Institute of Dental Sciences, Belagavi, KLE University, between August 2016 and February 2017. Materials and Methods: Thirty identical mesh - runner bar - sprue patterns were prepared and divided into 2 different groups of 15 each, namely; Group 1 – Metal ring casting system and Group 2 – Ringless casting system. Each group was further divided into 3 sub-groups based on weight percentage of new-recasted Ni-Cr alloy; Group 1A and 2A – 100% new Ni-Cr alloy, Group 1B and 2B – 50% new and 50% recasted Ni-Cr alloy, and Group 1C and 2C – 100% recasted Ni-Cr alloy. Castability of the alloy was tested using modified Whitlock’s method. Results: The results of this study revealed that the mean castability values ranged from 99.64% – 99.86%, and there is no significant difference (p > 0.05) between the castability of new alloy and recasted alloy using ring and ringless casting techniques. Conclusions: Ring and ringless casting techniques have comparable accuracy and can produce clinically acceptable castings.
Authors and Affiliations
Vimal K. Munot, Ramesh P. Nayakar, Raghunath Patil
Keywords
Related Articles
- EP ID EP318343
- DOI 10.9734/BJAST/2017/33261
- Views 166
- Downloads 0
Modeling Groundwater Behavior in Ferozpur Subcatchment of Jhelum Sub-basin of Kashmir Valley
Aims: The study aimed at modeling the groundwater behavior in the Ferozpur subcatchment of Jhelum sub-basin of Kashmir Valley using the GMS (MODFLOW) model. Study Design: The study was carried out in three different sim...
Impact of Growth Regulators on Seed Yield and Quality of Coriander (Coriandrum sativum L.)
Coriander (Coriandrum sativum L.) is an important seed spices crop of family Apiaceae (Umbelliferae) with cross-pollination as mode of reproduction. Coriander is an important seed spice, cultivated in almost states of In...
Hybrid Panels of Wood Plies and Particles Pinus sp
The aim of this study was to develop a hybrid panel produced with wood plies and wood particles of Pinus sp. as an alternative to plywood. Tests were performed to determine mechanical properties in static bending: elasti...
Application of Multiple Ecological Risk Indices for the Assessment of Heavy Metal Pollution in Soils in Major Mechanic Villages in Abuja, Nigeria
Heavy metal contamination has become a serious environmental problem due to their negative effects on humans, organisms, soil quality, underground water and ecosystem. This research was targeted at the use of multiple ec...
Physical and Mechanical Properties of Sabiá Wood (Mimosa caesalpiniaefolia Bentham.)
Wood is a natural material with technological properties that vary between species (genetic factors) and for the same species (edaphoclimatic factors). For the use of wood in civil construction, physical and mechanical p...