Haraldson T, Jemt T, Stålblad P A, Lekholm U
Department of Stomatognathic Physiology, University of Gothenburg, Sweden.
Scand J Dent Res. 1988 Jun;96(3):235-42. doi: 10.1111/j.1600-0722.1988.tb01550.x.
Nine subjects treated with overdentures on osseointegrated implants in the mandible were functionally evaluated before and after treatment. The last recordings were performed 1 yr after treatment. The evaluation comprised a subjective and a clinical examination. Measurements of bite force and of chewing efficiency were also performed. The bite force was measured during gentle biting, biting as when chewing and biting with maximal effort. Almonds were used as test food. All subjects improved subjectively as well as clinically after treatment. The bite force during gentle biting increased on average from 17.3 N before treatment to 24.0 N 1 yr after treatment. A corresponding improvement of biting as when chewing was also found, from on average 24.0 N before to 38.7 N after treatment. The maximal bite force increased from on average 74.6 N at the baseline examination to 131.5 N at the 1-yr follow-up. The chewing efficiency improved from Ci = 4 (Median value) before treatment to Ci = 2.8 (Median value) after treatment. It is concluded that treatment with an overdenture supported by osseointegrated implants in the mandible improves oral function compared to the situation before treatment.
对9名下颌骨种植体支持覆盖义齿治疗的患者在治疗前后进行了功能评估。最后一次记录是在治疗后1年进行的。评估包括主观和临床检查。还进行了咬合力和咀嚼效率的测量。咬合力在轻咬、咀嚼时咬和用力咬时进行测量。使用杏仁作为测试食物。所有患者在治疗后主观和临床状况均有改善。轻咬时的咬合力平均从治疗前的17.3 N增加到治疗后1年的24.0 N。咀嚼时咬合力也有相应改善，从治疗前平均24.0 N增加到治疗后的38.7 N。最大咬合力从基线检查时的平均74.6 N增加到1年随访时的131.5 N。咀嚼效率从治疗前的Ci = 4（中位数）提高到治疗后的Ci = 2.8（中位数）。结论是，与治疗前相比，下颌骨种植体支持的覆盖义齿治疗可改善口腔功能。
