International Journal of Prosthodontics and Restorative Dentistry

Register      Login

VOLUME 6 , ISSUE 2 ( April-June, 2016 ) > List of Articles

RESEARCH ARTICLE

Softening Condition of Impression Compound for Border molding of Removable Dentures

Takayuki Ueda, Kaoru Sakurai, Takashi Koike, Tomofumi Takano, Yoshihiro Kugimiya

Citation Information : Ueda T, Sakurai K, Koike T, Takano T, Kugimiya Y. Softening Condition of Impression Compound for Border molding of Removable Dentures. Int J Prosthodont Restor Dent 2016; 6 (2):37-42.

DOI: 10.5005/jp-journals-10019-1152

Published Online: 00-06-2016

Copyright Statement:  Copyright © 2016; Jaypee Brothers Medical Publishers (P) Ltd.


Abstract

Objectives

To prepare removable dentures, border molding using an impression compound has been employed for a long time to obtain a denture border morphology harmonized with perioral muscle movement. However, border molding using impression compound is performed following practitioner's empirical rule. The objective of this study is to clarify the optimum softening conditions of impression compound for border molding, for which we measured the pressure assumed to be loaded on impression compound during border molding.

Materials and methods

The pressure assumed to be loaded on an impression compound during border molding was measured using a tongue pressure-measuring device. Based on the measured pressure, appropriate softening conditions were investigated (softening temperature and water immersion time) for three types of impression compound: Red (Impression com- pound Red, Kerr, USA), green (Peri Compound, GC, Japan), and pink (Iso Compound, GC, Japan).

Results

The measured pressure was significantly different between those in the oral vestibule in the lower anterior tooth region during tugging the mouth corner, and in the gingivobuccal fold of the lower first molar during large mouth opening. Regarding the impression compound softening condition, red was deformed by all measured muscle pressures after immersion in 60°C water for 30 seconds and 65°C water for 20, 25, and 30 seconds. Green was deformed by all measured muscle pressures after immersion in 60°C water for 30 seconds, and 65°C water for 25 and 30 seconds. In contrast, pink was deformed by all measured muscle pressures after immersion in 55°C water for 25 and 30 seconds.

Conclusion

It was clarified that for border molding, muscle pressures of all regions during the functional movements can be registered using red and green softened by immersion in 60°C water for 30 seconds and pink softened by immersion for 20 seconds.

How to cite this article

Takano T, Kugimiya Y, Koike T, Ueda T, Sakurai K. Softening Condition of Impression Compound for Border molding of Removable Dentures. Int J Prosthodont Restor Dent 2016;6(2):37-42.


PDF Share
  1. The use of pre-border-molded custom trays in complete denture fabrication. J Prosthet Dent 2001 Dec;86(6):655-657.
  2. Displacement of border tissues during final impression procedures. J Prosthet Dent 1994 Feb;71(2):133-138.
  3. Single stage silicone border molded closed mouth impression technique - Part II. J Indian Prosthodont Soc 2011 Sep;11(3):183-188.
  4. A retrospective comparison of two definitive impression techniques and their associated postinsertion adjustments in complete denture prosthodontics. J Prosthodont 2003 Sep;12(3):192-197.
  5. Comparative evaluation of border molding, using two different techniques in maxillary edentulous arches - An in vivo study. J Int Oral Health 2013 Dec;5(6):82-87.
  6. Impressions for full dentures. J Prosthet Dent 1952 Nov;2(6):737-745.
  7. An analysis of the development of complete denture impression techniques. J Prosthet Dent 1981 Sep;46(3):242-249.
  8. ; Hobkirk, J.; Eckert, S.; Jacob, R. Boucher's prosthodontic treatment for edentulous patients: Complete dentures and implant-supported prostheses, 13th ed. St Louis: Mosby; 2012. p. 161-179.
  9. A complete denture impression technique survey of postdoctoral prosthodontic programs in the United States. J Prosthodont 2014 Jun;23(4):320-327.
  10. What is the evidence base for the efficacies of different complete denture impression procedures? A critical review. J Dent 2013 Jan;41(1):17-23.
  11. A survey of U.S. prosthodontists and dental schools on the current materials and methods for final impressions for complete denture prosthodontics. J Prosthodont 2005 Dec;14(4):253-262.
  12. Do traditional techniques produce better conventional complete dentures than simplified techniques. J Dent 2005 Sep;33(8):659-668.
  13. Current concepts and techniques in complete denture final impression procedures. J Prosthodont 2003 Dec;12(4):280-287.
  14. American dental association specification no. 3 for dental impression compounds first revision. J Am Dent Assoc 1940 May;27(5):713-717.
  15. Further studies on impression compound. Dent Pract Dent Rec 1965 Apr;15:292-294.
  16. Manometric evaluation of oral function with a hand-held balloon probe. J Oral Rehabil 2011 Sep;38(9):680-685.
PDF Share

© Jaypee Brothers Medical Publishers (P) LTD.