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Bite Force after Fixed Full-arch Implant Rehabilitation (All-on-4) Compared to Complete Dentures and Dentate Patients
EAO Online Library. Fürhauser N. Oct 9, 2018; 232683
Nikolaus Fürhauser
Nikolaus Fürhauser
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Loss of the remaining dentition in one or both jaws has a significant bearing on chewing patterns and related forces. Full-arch implant therapy with fixed prosthetic rehabilitation (All-on-4 technique) aims to accurately restore patients' chewing ability.The objective of the study was to assess the maximum occlusal bite force among patients equipped with implant-supported fixed or removable dentures and draw a comparison to dentate and complete denture patients.The bite force of 5 groups of patients (All-on-4 implant bridges, implant overdentures, complete dentures and fully dentate patients) was assessed using a custom-made device measuring forces while chewing in Newton (N) and compared between the groups.The mean bite force was 199.2 ± 97.0 N for dentate patients, 283.1 ± 142.1 N for patients with All-on-4 implant bridges in both jaws, 108.1 ± 55.7 N in case of All-on-4 rehabilitation in one jaw only (combined with complete dentures or implant overdentures), 90.6 ± 28.6 N with implant overdentures, and only 83.5 ± 48.0 N in complete denture patients.The results of the present clinical investigation suggest that patients with fixed full-arch implant bridges (All-on-4 technique) demonstrate bite forces similar to or even exceeding fully dentate patients. Patients wearing complete dentures, implant overdentures or implant bridges in just one jaw, by contrast, show a bite force reduction of -53%.
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