Impaired force control during food holding and biting in subjects with tooth-or implant-supported fixed prostheses
Impaired force control during food holding and biting in subjects with tooth-or implant-supported fixed prostheses
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DOI：
10.1111/j.1600-051x.2011.01781.x
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发表时间：
2011-12-01
影响因子：
6.7
通讯作者：
Trulsson, Mats
中科院分区：
文献类型：
--
作者：
Svensson, Krister G.;Trulsson, Mats
目的：我们的目标是评估受试者使用天然牙（天然牙）、双颌牙齿支撑牙桥（牙桥）和双颌种植体支撑牙桥（种植牙）控制与牙齿之间夹持和劈开食物相关的低接触力和高咬合力的能力。材料和方法：每组有 10 名受试者执行一项任务，涉及在一对相对的中枢牙之间夹持和劈开不同硬度的食物（饼干和花生）。结果：种植体组所用的固定力明显高于桥接组所施加的相应力且变化更大，而自然组使用的力最低且变化最小。对于所有三组来说，花生的分裂力比饼干更高，分裂阶段的持续时间也更长。在自然组的情况下，与饼干相比，在劈开花生时观察到明显更高的力增加率（峰值力率），而在其他两组中则没有观察到这种差异。结论：这些发现表明，具有双颌牙齿或种植体支撑牙桥的个体（其中牙周机械感受器提供的感觉信息受损或缺失）无法在具有天然牙齿的个体的水平上施加低握持力，或无法使劈裂力的速率适应天然牙个体的水平。食物的硬度。因此，我们得出结论，来自牙周机械感受器的足够的感觉信息对于低接触力和高咬合力的正常控制至关重要。
Aim: Our goal here was to assess the ability of subjects with their natural teeth (natural), bimaxillary tooth-supported bridges (bridge) and bimaxillary implant-supported bridges (implant) to control the low contact and high biting forces associated with holding and splitting food between the teeth.Materials and Methods: Ten subjects in each of these groups performed a task involving holding and splitting morsels of food with different degrees of hardness (biscuits and peanuts) between a pair of opposing central incisors.Results: The hold force employed by the implant group was significantly higher and more variable than the corresponding force exerted by the bridge group, whereas the natural group used lowest and least variable force. For all three groups, the split force was higher and the split phase duration longer with peanuts than for biscuits. In the case of the natural group, a significantly higher rate of force increase (peak force rate) was observed when splitting peanuts when compared with biscuits, whereas no such difference could be seen for the other two groups.Conclusion: These findings demonstrate that individuals with bimaxillary tooth- or implant-supported bridges (in whom sensory information provided by the periodontal mechanoreceptors is impaired or missing) are unable to apply low-hold forces at the levels of individuals with natural teeth or to adapt the rate of the split force to the hardness of the food. We thus conclude that adequate sensory information from periodontal mechanoreceptors is essential for normal control of both low contact and high biting forces.