A two-year kinesiographic study of mandibular movement patterns in denture wearers

Kinesiographic study of masticatory movements in denture wearers with normal and resorbed denture-bearing areas

“…Although no other study was identified that focused on the condition of the denture-bearing area, this finding is in agreement with other studies on denture wearers. 19,24 According to Tallgren et al, 24 problems with the retention and stability of complete dentures lead to changes in masticatory movements, including significant reductions in the masticatory area and in the amount of vertical and lateral movements of the jaw during mastication. Tallgren et al 24 also suggested that this chopping pattern of mastication is an adaptive change to avoid denture dislodgment during function and could support the smaller masticatory area and fewer lateral movements found in the resorbed group.…”

“…15,16 Studies 17-23 evaluating the mandibular movements of complete denture wearers have found interesting results. Some 17,23 have reported minor differences for masticatory cycle characteristics, such as velocity and duration, between complete denture wearers and dentate persons, whereas others 19,24 have found significant restrictions on the masticatory movements in complete denture wearers. Denture wearers have been reported to make chopping movements, with fewer vertical openings and fewer lateral movements, to keep the prosthesis more stable during mastication.…”

“…Denture wearers have been reported to make chopping movements, with fewer vertical openings and fewer lateral movements, to keep the prosthesis more stable during mastication. 24 Because the degree of ridge resorption influences the retention and stability of the denture, the masticatory movements could be affected by the condition of the denture-bearing area. 19 Nevertheless, the authors identified no previous studies that have considered this aspect when evaluating the jaw motion of denture wearers.…”

EMG activity of the masseter muscle in implant supported overdenture wearers during chewing of hard and soft food

“…In the present study the mean duration of the chewing cycle was 752·5 ± 143·5 ms for apple and 695·2 ± 100·8 for carrot. In general chewing cycle duration was longer than that recorded in complete denture wearers and this is probably because of the better stability of the lower denture that enables more extreme chewing movements (Tallgren, Mizutani, & Tryde, 1989). Self‐confidence during chewing was also reflected in the relatively lower coefficients of variation (12·7 and 13·6%, respectively) that among others indicate chewing regularity with more uniform and repetitive cycles.…”

Comparisons of Masticatory Movements between Mixing Ability Test and Masticatory Performance Test

“…[9][10][11] It is widely known that a central pattern generator located in the brain stem is primarily responsible for rhythmic chewing pattern. 12 Animal studies have demonstrated the chewing pattern can be modified by sensory feedback from periodontal receptors and muscle spindles.…”