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Occlusal contact of fixed implant prostheses using functional bite impression technique
Yasunori Suzuki1, Hidemasa Shimpo, Chikahiro Ohkubo
1*Associate Professor, Division of Oral and Maxillofacial Implantology, Tsurumi University School of Dental Medicine, Yokohama, Japan. †Associate Professor, Department of Removable Prosthodontics, Tsurumi University School of Dental Medicine, Yokohama, Japan. ‡Professor, Department of Removable Prosthodontics, Tsurumi University School of Dental Medicine, Yokohama, Japan.
The functional bite impression (FBI) technique significantly improves the accuracy of occlusal contacts for implant-fixed prostheses compared to conventional methods. This leads to more precise and functional dental restorations.
Area of Science:
- Dental prosthodontics
- Biomaterials science
- Occlusion and biomechanics
Background:
- Accurate occlusal contact is crucial for the longevity and function of implant-fixed prostheses.
- Conventional impression techniques may not fully capture dynamic occlusal forces, potentially leading to inaccuracies.
- The functional bite impression (FBI) technique, combined with functional generated path (FGP) recording, aims to address these limitations.
Purpose of the Study:
- To compare the accuracy of occlusal contact in implant-fixed prostheses fabricated using the FBI technique versus conventional impression methods.
- To evaluate the efficacy of the FBI technique in achieving precise maxillomandibular registrations and impressions under occlusal load.
Main Methods:
- A study involving twelve subjects with single premolar or molar tooth loss requiring implant-fixed prostheses.
- Occlusal contact conditions were assessed using a modified transillumination method.
- The rate of change in occlusal contact area before and after occlusal adjustment was compared between the FBI and conventional techniques.
Main Results:
- The FBI technique demonstrated a 96% rate of change in occlusal contact area, significantly higher than the 54% observed with the conventional technique.
- Implant prostheses created using the FBI technique showed superior occlusal contact accuracy compared to those made with conventional methods.
Conclusions:
- The FBI technique enables the production of precise and functional implant-fixed prostheses.
- Simultaneous maxillomandibular registration, impression, and FGP recording using the FBI technique are key to achieving optimal prosthetic outcomes.
