The Influence of Various Attachment Types in Mandibular Implant-retained Overdentures on Maximum Bite Force and EMG
F.M.C. van Kampen1,2,*,
A. van der Bilt1,
M.S. Cune1, and
F. Bosman1
1 Department of Oral-Maxillofacial Surgery, Prosthodontics and Special Dental Care, University Medical Center Utrecht, PO Box 85.060, 3508 AB, Utrecht, The Netherlands; and
2 Central Military Hospital, Utrecht, The Netherlands;
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Figure 1. The bite-force transducer. The left and right parts of the mouthpiece are covered with dental impression material.
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Figure 2. Bite force during maximum bilateral clenching for the 5 different measurements. Values of the bite force of left and right sides were summed. Bite force decreased from old to new dentures without attachments (p = 0.05). Bite force increased when attachments were incorporated into the new denture (p < 0.001). Bite force with a magnet attachment was significantly lower than with the ball attachment (p = 0.03). One-way ANOVA and post hoc tests were applied to test differences (n = 18).
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Figure 3. Activity of masseter and temporalis muscles during maximum bilateral clenching for the 5 different measurements. EMG values of left and right sides were summed for both muscles. EMG decreased for the masseter (p = 0.003) and temporalis muscle (p = 0.021) from old to new dentures without attachments. EMG increased for both temporalis and masseter when attachments were incorporated into the new denture (p < 0.001). EMG of the temporalis muscle is significantly lower than EMG of the masseter muscle for both the old (p = 0.012) and the new (p = 0.001) dentures without attachments. One-way ANOVA and post hoc tests were applied to test differences (n = 18).
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