Fløystrand F, Orstavik J S
Acta Odontol Scand. 1984 Feb;42(1):29-36. doi: 10.3109/00016358409041128.
Complete maxillary dentures were tested for their ability to remain in place when subjected to unilateral occlusal loads. The test material comprised five persons, each supplied with three identical dentures. The denture design was based on the principles of 1) functionally determined filling-in of the vestibular sulcus, 2) palatal coverage to the vibration line without post dam, 3) aesthetically governed positioning of the front teeth, and 4) positioning of the lateral teeth in the plane connecting the top of the residual ridge with the central part of the occlusal surface of the antagonizing natural teeth. Resistance to unilateral occlusal loads was measured by means of a miniature bite force sensor. In the pooled material, an average load of 70 N was tolerated before the dentures were dislodged. For a given participant/denture combination, the resistance against dislodgment varied considerably when tested on different days. Marked differences were also found among three identical dentures in one person. The tolerance against unilateral occlusal loads could feasibly be quantified. However, the influence of specific clinical and/or technological factors on denture retention during function should be studied only if strict definitions as to the test conditions are given. These conditions must include the time, person, and denture tested.
对上颌全口义齿在承受单侧咬合负荷时的固位能力进行了测试。测试材料包括五个人，每人提供三副相同的义齿。义齿设计基于以下原则：1）根据功能确定前庭沟的填充；2）腭部覆盖至颤动线且无后堤；3）根据美学原则确定前牙位置；4）将侧牙置于连接残余牙槽嵴顶部与对颌天然牙咬合面中央部分的平面上。通过微型咬力传感器测量单侧咬合负荷的抵抗力。在汇总材料中，义齿脱位前平均可耐受70 N的负荷。对于给定的参与者/义齿组合，在不同日期进行测试时，抗脱位能力差异很大。在一个人的三副相同义齿之间也发现了明显差异。单侧咬合负荷的耐受性可以切实地进行量化。然而，只有在给出关于测试条件的严格定义时，才应研究特定临床和/或技术因素对义齿在功能期间固位的影响。这些条件必须包括测试的时间、人员和义齿。
