Effects of Rapid Burnout Type Gypsum-bonded Investment on Performance of Castings

Abstract

Rapid burnout type gypsum-bonded investment materials were developed to shorten the time required for

A Comparative Evaluation of Conventional Vs Accelerated Casting Technique, as Regards Marginal Fit and Surface Roughness

“…Blackman (2000) [7] measured marginal sharpness and diameter changes for crowns cast with type III gold alloy by using phosphate-bonded investment and rapid burnout techniques, and concluded that rapid mould preparation resulted in loss of marginal fineness. Murakami et al (1994) [8] studied the rapid burnout technique with gypsum-bonded investment to examine surface aspects and fit of complete crowns and noted that, less expansion had occurred and was probably responsible for increased gaps.…”

Accuracy of Ringless Casting and Accelerated Wax‐Elimination Technique: A Comparative In Vitro Study

“…In the accelerated method, the mold is introduced in a preheated furnace (set at maximum recommended temperature) as soon as it achieves adequate wet strength (12 to 15 minutes) . This eliminates the wax pattern rapidly within 12 to 15 minutes …”

“…9 Accelerated/rapid wax-elimination methods have been reported to reduce laboratory time and achieve similar casting accuracy in 30 to 40 minutes. [10][11][12][13][14][15] In the accelerated method, the mold is introduced in a preheated furnace (set at maximum recommended temperature) as soon as it achieves adequate wet strength (12 to 15 minutes). [11][12][13][14] This eliminates the wax pattern rapidly within 12 to 15 minutes.…”

“…[10][11][12][13][14][15] In the accelerated method, the mold is introduced in a preheated furnace (set at maximum recommended temperature) as soon as it achieves adequate wet strength (12 to 15 minutes). [11][12][13][14] This eliminates the wax pattern rapidly within 12 to 15 minutes. [11][12][13][14] The combination of ringless and accelerated wax-elimination methods may potentially be advantageous to the technician and dentist, by reducing cast restoration delivery time, clinical appointments, and laboratory costs and increasing productivity.…”

“…[11][12][13][14] This eliminates the wax pattern rapidly within 12 to 15 minutes. [11][12][13][14] The combination of ringless and accelerated wax-elimination methods may potentially be advantageous to the technician and dentist, by reducing cast restoration delivery time, clinical appointments, and laboratory costs and increasing productivity. 2,8 Studies related to ringless casting and accelerated wax-elimination methods have been reported individually; however, no studies suggest combining the two techniques for increased clinical efficiency and productivity.…”