Clinical observation on the reconstructed mandibles used by apatite porous block:Cases of bridge substitution

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Since 1980, we have clinically applied an apatite porous block used as synthetic bone for the reconstruction of mandibular defects. Of the 27 cases treated with this method so far, in recent three years seven cases underwent bridge substitution after segmental resection in which a titanium mandibular reconstruction plate we developed was used for the apatite block. These seven cases were examined.In a 73-year-old female (M area) examined by autopsy, apatite and bone were completely fussed two years after operation. The histologocal examination of the specimen also revealed fusion of the apatite and bone and new intraporous bone formation in the apatite.In a 35-year-old male (M area) a mandibular reconstruction plate was removed one year and ten months after operation. The reconstructed mandible is functioning normally. Bone scintigraphy (99mTc) was useful for the observation of the postoperative clinical course in these two cases. In conclusion, the results of our case study support the effectiveness of our technique for the reconstruction of mandibular defects with apatite porous block using a pure titanium mandibular reconstruction plate.
日本頭頸部癌学会の論文