Display options
Cite
Geetha Prabhu KR, Prabhu R, Maheswari H, et al. Sprue design alterations and its effect on the properties of base metal alloy castings: An in vitro study. J Pharm Bioallied Sci. 2015;7:S524-9doi: 10.4103/0975-7406.163527.
Geetha Prabhu, K. R., Prabhu, R., Maheswari, H., Eswaran, M. A., Phanikrishna, G., & Deepthi, B. (2015). Sprue design alterations and its effect on the properties of base metal alloy castings: An in vitro study. Journal of pharmacy & bioallied sciences, 7S524-9. https://doi.org/10.4103/0975-7406.163527
Geetha Prabhu, K R, et al. "Sprue design alterations and its effect on the properties of base metal alloy castings: An in vitro study." Journal of pharmacy & bioallied sciences vol. 7 (2015): S524-9. doi: https://doi.org/10.4103/0975-7406.163527
Geetha Prabhu KR, Prabhu R, Maheswari H, Eswaran MA, Phanikrishna G, Deepthi B. Sprue design alterations and its effect on the properties of base metal alloy castings: An in vitro study. J Pharm Bioallied Sci. 2015 Aug;7:S524-9. doi: 10.4103/0975-7406.163527. PMID: 26538911; PMCID: PMC4606653.
Copy Download .nbib Format: NLM
Share it on

J Pharm Bioallied Sci. 2015 Aug;7:S524-9. doi: 10.4103/0975-7406.163527.

Sprue design alterations and its effect on the properties of base metal alloy castings: An in vitro study.

Journal of pharmacy & bioallied sciences

K R Geetha Prabhu, R Prabhu, H Maheswari, M A Eswaran, G Phanikrishna, B Deepthi

Affiliations

  1. Department of Prosthodontics, Thai Moogambigai Dental College and Hospital, Chennai, Tamil Nadu, India.
  2. Department of Oral Medicine and Radiology, Maharana Pratap Dental College and Hospital, Madhya Pradesh, India.
  3. Department of Prosthodontics, Sibar Institute of Dental Sciences, Guntur, India.
  4. Consultant Prosthodontist, Dent plus dental clinic, Guntur, Andhra Pradesh, India.

PMID: 26538911 PMCID: PMC4606653 DOI: 10.4103/0975-7406.163527

Abstract

INTRODUCTION: To study the effect of various sprue designs on the properties of base metal alloy castings. The base metal alloys are extensively used for their excellent properties such as an increase in hardness, high melting range, high elastic modulus, its compatibility with ceramic material and low cost. However, to improve the properties of the base metal alloys is an ongoing research leading to various modifications in their fabrication procedure - which include sprue designs and their mode of attachment to the wax pattern.

AIMS AND OBJECTIVES: Study compared the effect of three sprue designs viz. conical sprue, cylindrical sprue and bottleneck sprue on the properties of mass and microhardness of base metal alloy castings.

MATERIALS AND METHODS: A prefabricated wax mesh pattern was selected for the fabrication of the alloy test samples in the study. The cylindrical sprue design was connected to the mesh pattern with a straight attachment. The bottleneck sprue design was connected to the mesh pattern with a constricted attachment. The conical sprue design was connected to the mesh pattern with a flared attachment. In this manner, ten samples for each of the three different sprue designs were prepared.

RESULTS: The obtained value for mass and microhardness were subjected to statistical analysis. ANOVA test was performed to determine the difference between the sprue designs.

CONCLUSION: The bottleneck sprue, conical sprue, and cylindrical sprue designs did not exert any apparent influence on the mass and microhardness.

Keywords: Base metal alloy castings; dental alloy castings; microhardness; sprue design

References

  1. J Prosthet Dent. 1986 Jun;55(6):686-90 - PubMed
  2. J Prosthet Dent. 1984 Oct;52(4):491-500 - PubMed
  3. J Prosthet Dent. 1993 Mar;69(3):267-9 - PubMed
  4. J Prosthet Dent. 1989 Apr;61(4):418-24 - PubMed
  5. J Dent Res. 1980 May;59(5):824-30 - PubMed
  6. J Prosthet Dent. 1990 Aug;64(2):162-6 - PubMed
  7. J Prosthet Dent. 2001 Feb;85(2):190-4 - PubMed

Publication Types