TITLE

A COMPARATIVE STUDY ON MARGINAL FIT OF CROWNS MADE WITH CONVENTIONAL CASTING TECHNIQUE AND ACCELERATED CASTING TECHNIQUE

AUTHOR(S)
Kaur, Ravneet
PUB. DATE
August 2011
SOURCE
Guident;2011, Vol. 4 Issue 9, p69
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Aim of the study: Numerous materials and methods have been used for complete crown fabrication. Conventional investing and casting procedures for phosphate-bonded investments require a 2-4 hours process before completion. Accelerated casting techniques have been tried in this study on single unit castings and marginal gaps were measured and compared with castings made with the conventional casting technique. Materials and methods: The study was conducted in vitro on 50 stone dies duplicated from a brass metal die. On 25, castings were made with conventional casting technique and on other 25 with accelerated casting technique. 2-stage wax elimination cycle was used for conventional group. For accelerated group, the investment mold was heated for 15 min in an oven which was preheated to 8150c. Each casting was seated on its respective stone die and marginal gaps were measured under Traveller's microscope. Marginal gaps were then put for statistical analysis and then evaluated by t-test. Results: The average mean value of conventional group was 500.7um and of accelerated group was 514.2um. No statistically significant difference was found between two groups. Conclusion: All the gap measurements were within the range of clinical acceptability. Therefore, it is concluded from the present study that accelerated casting method is technique sensitive but offers a cost effective and time saving method for fabricating single unit castings.
ACCESSION #
65790428

 

Related Articles

  • Possibilities and Limits of the Centrifugal Casting Procedure: An Examination of Morimoto's Theory of Casting. Shigemura, Hiroshi // Quintessence of Dental Technology (QDT);1997, Vol. 20, p175 

    The article discusses dental casting procedures and also cross-examines the Toshio Morimoto's theory of casting. It states that though dental casting techniques have undergone many changes in the recent past yet no truly effective countermeasure has yet been introduced against casting flaws,...

  • Permanent molar stainless steel crown restoration. Croll, Theodore P. // Quintessence International;May1987, Vol. 18 Issue 5, p313 

    The article presents the technique for placement of permanent molar stainless steel crown. Stainless steel crowns for permanent posterior teeth are finished and polished as carefully as precision cast gold restorations. Stainless steel crowns for permanent molars are interim restorations. Young...

  • A One-Step Putty-Wash Impression Technique Utilizing Vinyl Polysiloxanes. Pameijer, Cornelis H. // Quintessence International;Aug1983, Vol. 14 Issue 8, p861 

    The article presents information on a putty-wash impression technique using Vinyl polysiloxanes. The vinyl polysiloxanes are nontoxic and nonirritating addition-cured elastomeric impression materials. The author states that the technique, in which the putty and wash material are combined in a...

  • Anatomical Shading Technique Utilizing the Synspar Porcelain System. Kuwata, Masahiro // Quintessence of Dental Technology (QDT);1997, Vol. 20, p125 

    The article presents information on the theory Anatomical Shading Technique developed by professor Masahiro Kuwata. The theory involves two important sections, first the structural theory of porcelain layering and secondly, practical procedure in porcelain buildup and fabrication. According to...

  • post.  // Taber's Cyclopedic Medical Dictionary;2005, p1739 

    The article presents a definition for the term "post," which refers to a cast restoration that extends into the root of a tooth to anchor a dental crown.

  • The metal coronal margin in the scanning electron microscope. Böttger, H.; Rosenbauer, K. A.; J. Setz // Quintessence International;May1986, Vol. 17 Issue 5, p289 

    The article focuses on the method in which coronal margins of five cast crowns are compared with the use of scanning electron photomicrographs. The method is intended for use in detecting sources of error that take place while fitting a crown, and to inspect the quality of polished margins. Five...

  • The Effect of Venting on the Strength of Dicor and Hi-Ceram Ceramic Crowns. Sallustio, Frank W.; Waskewicz, Gregory A.; Billy, Edward J. // International Journal of Prosthodontics;Sep/Oct1992, Vol. 5 Issue 5, p463 

    Research has shown that external venting improves the marginal fit of cast crowns by decreasing hydrostatic pressure during seating. In turn, improving marginal fit has been shown to increase the strength of castable glass and other porcelain systems. This study evaluated the effect on the...

  • A simple attachment to the surveyor for effective transfer of path of insertion from diagnostic cast to the working cast. Sajjan, Suresh M. C. // Journal of Indian Prosthodontic Society;Jun2006, Vol. 6 Issue 2, p72 

    The record of path of insertion on the dental cast is part of the dentist's work authorization to the dental laboratory technician for a removable partial denture. Through the years several methods have been suggested to record and transfer the achieved path of insertion. However apart from...

  • Influence of Finish-Line Form on Crown Cementation. Byrne, Gerard // International Journal of Prosthodontics;Mar/Apr1992, Vol. 5 Issue 2, p137 

    Studies reporting the influence of finish-line configuration on the fit of cemented crowns have had conflicting conclusions. This study examined the effect of finish-line configuration on the fit of cemented complete crowns. Three identical tooth preparations were made, each with a different...

Share

Read the Article

Courtesy of AIRBUS FRANCE S.A.S.

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics