With the progresses in medical research, reconstruction of body's deformation because of tumor or injury has been drawn more and more attentions. As autograft was limited by in short supply and dissatisfied performance, material scientists and medical researchers worked hard together and laid emphasis on manmade materials. Early studies were focused on absorbable materials. Since there was great discrepancy between absorption time and tissue repairing time, the studies on absorbable materials were blocked. From 1960's, more and more studies focused on bioceramics because of its excellent biocompatibility and mechanical properties. But the brittleness of bioceramics limited it for clinical use. In recent time, the strengthened ceramics and nano-bioceramics have been paid more attention and made great success. Scientists foretell that nano-technology would be the strategy of changing the brittleness of ceramics. The characters of nano-compound bioceramics were fit for the mechanical properties demand of man's hard tissue more. That infused new vigor into the research of bioceramics.

Objective To analyze and evaluate the effect of three-dimensional reconstruction of mandible and its relevant influencing factors, in order to provide references for research and application based on three-dimensional reconstruction of mandible. Methods Layered anatomic information of a mandible specimen was collected by CT scanning and then three-dimensional reconstruction of the mandible was carried out by software. Anterior-posterior dimension of the ramus and the thickness of the corpus of both the three-dimensional reconstructed model and the specimen of the mandible were measured and compared to evaluate the effect of three-dimensional reconstruction. Results High resolution of three-dimensional reconstruction was gained by CT scanning. Statistical analysis showed that there had been no difference of the measurement between the three-dimensional reconstructed model and the specimen. Conclusion Three-dimensional reconstruction of the mandible based on CT scanning could get good reconstruction effect and could meet the need of relevant research and clinical application that based on three-dimensional reconstruction of the mandible.