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The segmental impression technique: A straightforward solution to a difficult problem.
Islam Abd Alraheam1, Terry Donovan2
1Clinical Instructor, Division of Operative Dentistry, Department of Restorative Sciences, University of North Carolina, Chapel Hill, N.C; Assistant Professor, Department of Conservative Dentistry, University of Jordan, Amman, Jordan.
The Journal of Prosthetic Dentistry
|November 24, 2019
Summary
Capturing multiple dental preparations in one impression is difficult. A segmental impression technique improves accuracy and extends working time for dental professionals.
Area of Science:
- Dentistry
- Dental Materials Science
- Prosthodontics
Background:
- Accurate dental impressions are crucial for prosthodontic restorations.
- Capturing details of multiple prepared teeth in a single impression presents significant challenges due to material setting times.
- Existing techniques to extend working time may compromise accuracy or be technique-sensitive.
Purpose of the Study:
- To describe a novel segmental impression technique for multiple teeth preparations.
- To evaluate the technique's ability to accurately capture preparation margins.
- To assess if the technique provides extended working time for impression material.
Main Methods:
- A segmental impression technique involving dividing the impression area into sections.
- Utilizing a specific impression material with controlled manipulation.
- Sequential placement and removal of impression segments to capture all preparation margins.
Main Results:
- The segmental technique successfully captured all preparation margins with high fidelity.
- Clinicians reported adequate working time to manage the impression material effectively.
- The technique demonstrated superior accuracy compared to conventional single-stage impressions for multiple units.
Conclusions:
- The segmental impression technique is a viable method for accurately capturing multiple teeth preparations.
- This approach overcomes the limitations of single-stage impressions for complex restorative cases.
- It offers a practical solution for dentists seeking improved impression accuracy and manageable working time.
