咬合力

咬合力减弱对大鼠磨牙牙周膜Ⅰ型胶原mRNA表达的影响

Effect of Decreased Bite Force on the Temporal and Spatial Expression of Type ⅰ Collagen mRNA in Rat Molar Periodontal Ligament

结果：咬合力丧失引起牙周细胞中IL6mRNA表达较正常咬合力时明显增强。

Results : Without bite force , the expression level of IL_6 mRNA increased significantly in periodontal cells .

结果①P组治疗后1、3、6个月，最大咬合力值较治疗前有显著性提高（P<0.05）；S组与治疗前无显著性差异（P>0.10）。

Results There were significant differences between two groups in 3rd , 6th month after treatment .

目的：检测咬合力在正常及增强状态下，大鼠牙周细胞IL－6的动态表达，初探IL－6在牙周组织改建中作用的分子机别。

To study the expression of Il-6 in rat periodontal cells under normal and increased bite force .

IL-6表达蛋白与mRNA转录在咬合力影响大鼠牙周组织改建中的变化及意义

Expression of IL-6 and it ′ s mRNA transcription in the process of rat periodontium remodeling influenced by various bite forces

颞颌关节（TMJ）是一个结构复杂的左右联动关节，是咬合时承受咬合力的部位。

Temporomandibular joint ( TMJ ) is one of the most complicated joints , which belongs to synovial joints .

结果：有过早接触的患者在两种咬合力下，左右侧单颌咬合接触点数目、面积之差绝对值均高于正常受试者（P＜0.05）。

The results indicated : Under light and medium pressure , absolute values of the difference between number , area of occlusal contacts on the left and the right at different thickness had notable differences between the normal and the patients .

现有的测量数据显示，湾鳄具有最强的咬合力，一些科学家推测它们的咬合力都能同已灭绝了的雷克斯霸王龙（Tyrannosaurusrex）相媲美。

and some scientists suggest that this may rival the extinct dinosaur the Tyrannosaurus rex .

咬合力改变对大鼠牙周膜成纤维细胞Bcl-2、Bax的表达及其与细胞凋亡和增殖关系的研究

Study on the Expression of Bcl-2 , Bax as Well as Their Relationship with Apoptosis and Proliferation Activity in Periodontal Ligament Fibroblast under the Influence of Different Occlusal Forces

目的：研究咬合力丧失后诱导型一氧化氮合酶（iNOS）影响牙周组织改建的分子机制。

Objective : To study the effect and molecular mechanism of induced nitric oxide synthase ( iNOS ) on periodontium remodeling after bite force loss .

结果：咬合力增强引起牙周膜增宽、牙槽骨新骨形成。牙周细胞中IL－6表达较正常咬合力时明显增强。

Results : Under the increased bite force , periodontal ligament width was enlarged and new bone was formed in alveolar the expression of IL-6 increased apparently in periodontal cells .

目的：观察并比较洁治术与根面平整术对中度慢性牙周炎（chronicperiodontitis，CP）患牙最大咬合力和牙周临床指数的改善程度，提示医患双方重视、坚持系统的牙周治疗。

Objective To evaluate the changes of the occlusal force and the clinical periodontal parameters following initial therapy in chronic periodontitis , in order to help the clinicians and patients to preserve the systemic periodontal treatment .

方法：选用Wistar大鼠建立正常咬合力、咬合力丧失的动物模型，采用原位杂交方法，观察牙周细胞中IL6mRNA表达的动态变化。

Methods : Animal models with normal bite force and without bite force were established by using Wistar rats . In situ hybridization technique was applied to detect changes of IL_6 mRNA expression in rat periodontal tissue .

模拟最大咬合力600N垂直加载于全瓷冠模型咬合面。

A loading of 600 N , simulating the maximum bite force was applied vertically to the crowns .

目的：观察咬合力改变对大鼠牙周膜成纤维细胞凋亡及其增殖细胞核抗原（PCNA）表达的影响，探讨牙周膜改建的可能机制。

Objective : To study the influence of occlusal force change on apoptosis of periodontal ligament fibroblast ( PDLF ) and expression of proliferating nuclear antigen ( PCNA ) in the fibroblasts , so as to explore the possible mechanism for remodeling of periodontal ligament .

目的研究在体内咬合力丧失情况下iN0s影响牙周组织改建的分子机制。

Objective To establish iNOS for the study of molecular mechanism of the effect of bite force loss on periodontium remodeling .

TMJ负荷的最直接来源为咬合力，其具有多向、多样及个体差异性。在咬合过程中，咬合接触的质与量对于保持TMJ应力环境的稳定有着十分重要的作用。

Occlusal force is the most direct origin of that load , which has varying directions , different types and individual diversity . In the process of biting , the character and capacity of occlusal contact play an important role in stabilizing the stress environment of TMJ .

结果：咬合力丧失导致牙周膜结构紊乱、牙槽骨吸收，IL-1β在PDLC和成骨细胞中的表达，较正常咬合力时明显增强。

RESULTS : In the group of lost biting force , derangement of periodontal ligament and resorption of alveolar bone were observed in histologic study . The expression of IL-1 β in PDLC and osteoblasts enhanced apparently than in the group of normal biting force with IHC technique .

用HE染色和免疫组化的方法，观察不同咬合力状态下牙周组织的形态学改变以及IL-1β在牙周膜成纤维细胞（PDLC）和牙槽骨成骨细胞中表达的动态变化。

The untreated rats ' mandibular molar area used as normal biting force model . The prepared tissue specimens were processed to study the change in histologic morphology with HE staining , and the expression of IL-1 β in PDLC and osteoblasts with immunohistochemistry ( IHC ) technique .

由于咬合力的存在，使粗粒土的强度大幅度提高。

It may raise the strength of the coarse grained soil .

提高了叠合面的粘结力和咬合力；

The strength of felt and occlude on superposition surface are enhanced .

我也是非常深刻的印象似鳄龙'咬合力的估计。

Also I 'm pretty impressed with Suchomimus'bite force estimate .

牙周细胞中TNF-α表达较正常咬合力时明显增强。

The expression level of TNF - α increased apparently in periodontal cells .

粗粒土的强度与咬合力的试验研究

Research on the strength of the coarse grained soil and the interlocking force

电阻应变式口腔咬合力测量传感器及其测量系统

Resistance - Strain Type Measurement Transducer of Occlusion Pressure and Its Measurement System

结论：综合治疗可以保留牙体组织并恢复咬合力，是目前隐裂牙治疗较理想的方法。

CONCLUSION : Comprehensive therapy is ideal method of choice in treating cracked-teeth .

目的研究牙根纵裂致病的咬合力因素。

Objective To study the induction of vertical root split by occlusal force .

由聚氨酯和尼龙材质，适合强悍咬合力的狗狗。

Made of polyurethane and nylon , they are durable for tough chewers .

肌等压区排牙法全口义齿对咀嚼肌肌电和咬合力的影响

Effect of neutral zone dentures on EMG of masticatory muscles and biting force

我也认为霸王龙咬合力估计过高。

I also think the T.Rex bite force estimate is far too high .