Results 71 to 80 of about 3,361 (109)

[Root fracture in endodontically versus nonendodontically treated posterior teeth: the cone beam computed tomography characteristics in Chinese population]. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi
Fu C, Pan X, Liu S, Lin Z.
europepmc   +1 more source

[Effect of concentrated growth factors in guided tissue regeneration for the treatment of mandibular molar furcation lesions]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Wang X, Cheng X, Zhang M, Li F, Duan J, Qiao J.   +5 more
europepmc   +1 more source

[The influence of articular surface conformity on the biomechanics of rotating hinge knee prostheses]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Li Y, Zhang Z, Li L, Zhang J, Chen Z, Zhang W.   +5 more
europepmc   +1 more source

[Research progress of tibial tunnel positioning techniques in posterior cruciate ligament reconstruction]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Li R, Liao Y, Guo F, Chen Q, Li S, He C.
europepmc   +1 more source

[Comparative study on the treatment of molar-incisor hypomineralization]. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi
Shan X, Yang Q, Yang X, Yang Y, Ma Y, Zhao Z, Li R.   +6 more
europepmc   +1 more source

[Challenges and clinical strategies for endodontic microsurgery in the posterior maxillary region]. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi
Zhang C, Huang X, Hou B.
europepmc   +1 more source

[Clinical comparison of xenograft versus synthetic bone graft materials in micro crestal flap-alveolar ridge preservation following extraction of molars]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Zhang S, Liu J, Xu T, Hu W, Zhang H, Wei Y.   +5 more
europepmc   +1 more source

螺栓连接和拉铆连接在剪切循环荷载作用下的松动行为研究

Jianzhu Gangjiegou Jinzhan
拉铆连接凭借其优秀的防松性能，被应用于越来越多的工程领域。为研究国产新型拉铆钉在剪切循环荷载作用下的松动性能，以应用最为广泛的螺栓连接为对照，分别对规格为8 mm的4.8级普通螺栓、4.8级防松螺栓以及小规格拉铆钉进行剪切循环荷载下的松动试验研究，分析了三类连接在剪切循环荷载作用下的松动过程，研究了荷载幅值和频率对螺栓连接和拉铆连接松动行为的影响。结合微观测试手段分析其损伤形貌，进一步研究剪切循环荷载下螺栓和拉铆钉的防松原理及微动损伤机制。研究表明：在同种工况下拉铆连接的防松性能优于螺栓连接的防松性能 ...
杨俊芬, 郝凯丽, 钟炜辉, 王维新, 苗广威, 张钦   +5 more
doaj  

[Archeological Research on Third Molar Degeneration]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Huang H, Zhou J, Zhou X.
europepmc   +1 more source

[Effectiveness analysis of single-incision treatment for adjacent two-segmental lumbar disc herniation using uni-portal non-coaxial spinal endoscopic surgery]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
He C, Li H, Xiao B, Zhou X, Cai X, Zhang H, Zhou J.   +6 more
europepmc   +1 more source