The association with variables of fibular reconstructed mandible and bite force in oral cancer patients with dental implant rehabilitation

Publication date: Available online 20 September 2018

Source: Journal of Cranio-Maxillofacial Surgery

Author(s): Yi-Fang Huang, Chung-Ta Chang, Chih-Hsin Muo, Hsiang-Hsi Hong, Yu-Fu Shen, Chia-Chang Lin, Shih-Ping Liu

Summary

Purpose

The aim of this study was to investigate how the physical variables of fibular reconstructed mandibles with dental implants affects the relative bite force in oral cancer patients.

Materials and Methods

Over 7 years of follow-up, 13 oral cancer patients were enrolled who included 51 successful implants in the fibular flap. The tactile sensor analyzer evaluated the bite force. The crown-implant ratio, fibular, and rehabilitated dental length were measured using radiographic images. Linear regression was used to analyze the bite force related to the variables of the implants in the fibular reconstructed mandible.

Results

Even when the results showed no statistical significance (P >0.05), increasing the crown-implant ratio, length of the fibular flap, and implant prosthetic reconstructed dentition had a tendency to decrease the bite force (estimate from −0.08% to −4.27%); there was a positive trend of occlusal force and the length of rehabilitative dentition compared with the dental antagonist (estimate = 6.95).

Conclusion

In this study, the crown-implant ratio, implant dentition, and fibular flap length revealed no significant impact on the bite force or implant success in oral cancer patients; however, a trend to weaken the bite force was suggested once the numerical values of these variables increased.

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