| About one third of the population in China are suffering from the second class malocclusion.In addition,the oral problems caused by osteoporosis have gradually become one of the stubborn diseases that can not be ignored in today’s society.More and more patients with oral problems tend to use overdenture,while there are few applications in the design mechanism of dental implants in consideration of different patient conditions at present.The main contents of this paper are as follows:(1)Using dciom modeling method to select patients with typical characteristics of osteoporosis and class II malocclusion as the research object,establish a mathematical model based on CT images,use three-dimensional image and processing software mimics to process the medical digital imaging and communication data obtained from CT,optimize the model through Geomagic,and use Solid Works to establish the mandible model.(2)A new type of porous implant is proposed.By optimizing the elastic modulus,reducing the stress shielding,improving the biological performance,and combining with the magnet to improve the treatment effect,the problems of poor bone bonding performance and large stress shielding of existing dental implants are solved.(3)The mandible was assembled with the designed implant,and different material properties and mesh division were added to the model,which was divided into two cases of osteoporosis and malocclusion.Four different loads were applied to the plane type,dome type and liner type implants to simulate daily occlusion,and the biomechanical properties were analyzed by ANSYS.Based on the above research results,the biomechanical performance of the designed implant is less than the physiological threshold,and the dome implant is better than the other two kinds of implants in biomechanical performance.It is a good choice for overdenture implant,whether in patients with osteoporosis or malocclusion. |
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