The manual dual-arch (or triple tray) technique is an efficient way of making a definitive impression and fabricating provisional restorations for crown and bridge procedures. This continuing education course presents a team approach to triple tray crown and bridge procedures. Topics include taking initial and final impressions, making provisional restorations, mixing impression materials, deciding when to use separate arch impressions instead of the triple tray, and preparing and packaging the patient case for the dental laboratory. While technological advancements may reduce the frequency of use of the manual triple tray impression technique, its intrinsic efficiency still makes it a viable option.
John S. Mamoun, DMD
John S. Mamoun, DMD, is a 2003 graduate of the University of Medicine and Dentistry of New Jersey. He completed a one–year Advanced Education in General Dentistry residency at the Eastman Dental Center, in Rochester, N.Y., and later earned his Fellowship award from the Academy of General Dentistry. He is currently in private practice in Manalapan, N.J.
Mariam Javaid, BDS
Mariam Javaid, BDS, graduated from the Altamash Institute of Dental Medicine (AIDM) in 2009, in Pakistan. After completing a residency at the AlDM in 2010, and an externship at the Karolinska Institute in Stockholm, Sweden, she came to the United States, where she is a dental assistant in Philadelphia, Pennsylvania.
Upon completion of this course, the dental professional should be able to:
• Explain the differences between the four kinds of triple trays.
• Describe the desired properties of impression materials used in crown and bridge.
• Know how to take pre-operative triple tray impressions, and how to assist the dentist taking the final triple tray impression.
• Understand the basic concepts of how to make provisional (temporary) restorations and how to refine and polish provisional restorations.
• Explain under what circumstances a triple tray is an appropriate impression to use, versus making separate arch impressions for a crown and bridge case.
• Explain the techniques, advantages and disadvantages of different ways of mixing impression materials.
• Understand basic techniques of mixing cements for provisional restorations and some advantages and disadvantages of various kinds of cements used with provisional restorations.
• Understand how to write up a dental laboratory prescription slip and package crown and bridge cases for a dental laboratory.
• Understand how to make a bite registration.
• Explain how to modify a pre-operative triple tray impression to remove obstructions that prevent a patient from fully occluding into the pre-operative triple tray impression.
CONTINUING EDUCATION CREDIT
The ADAA has an obligation to disseminate knowledge in the field of dentistry. Sponsorship of a continuing education program by the ADAA does not necessarily imply endorsement of a particular philosophy, product or technique.
Credits earned upon completion of this course may be used to meet DANB’s Recertification Requirements.
This course has been produced in part by a grant from the American Dental Assistants Association Foundation.
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