Clamp for clamping mandibular prosthesis and dynamic fatigue test device for mandibular prosthesis

Abstract

The invention provides a clamp for clamping a mandibular prosthesis. The clamp comprises a workbench, the workbench is provided with an occlusion simulation pressing block used for making contact withthe lower jaw teeth to simulate the action of the upper jaw teeth, a joint simulation pressing block used for being matched with the condyle process of the lower jaw prosthesis to simulate joint rotation, and a torque distribution block used for pressing the two lower jaw corners of the lower jaw prosthesis to simulate actual muscle traction. The torque distribution block is located above the occlusion simulation pressing block and the joint simulation pressing block, and the torque distribution block is further connected with an adjusting assembly used for adjusting the pressing torque. Compared with the prior art, the clamp has the advantages that according to the specific stress characteristics of the mandible, the occlusion simulation pressing block, the joint simulation pressing block and the torque distribution block are used for clamping the stress portion of the mandible prosthesis, the pressing torque can be adjusted through the adjusting assembly, and test simulation of various mandible defect conditions is achieved; the clamp is suitable for various types of mandibular prostheses on the market; and the clamp can be matched with a dynamic fatigue machine to realize system fatigue test in combination with a mandible model.

Description

technical field [0001] The invention relates to a test device, in particular to a clamp for clamping a mandibular prosthesis and a dynamic fatigue test device for the mandibular prosthesis. Background technique [0002] The mandible mainly completes the opening and closing of the mouth, and undertakes the functions of human body vocalization and food chewing. Mandibular defect is a common clinical disease in maxillofacial surgery. Defects are often caused by trauma, infection, tumor resection, etc., and can also be seen in some congenital malformations. It not only brings masticatory dysfunction to patients, but also changes the facial shape of patients. Therefore, the restoration of mandibular defects has always attracted the attention of oral and maxillofacial surgeons. Ideal jaw defect reconstruction requires not only restoration of normal facial shape, but also recovery of occlusal function. [0003] In recent years, the most commonly used clinical methods for mandibu...

AI Technical Summary

Problems solved by technology

Moreover, the commonly used test methods only consider the individual force of the prosthesis, ignoring the systemic interaction between the prosthesis and the bone and the screw. In actual use, the bone or the screw may also fail first.

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