wedgy

1.(1) Geometry model of roller bit’s sphere tooth, wedgy tooth and bucket shape tooth were established;

（1）建立了牙轮钻头球齿、楔齿和勺齿三维空间几何模型；

2.Partial gastrectomy was performed in four cases, distal gastric curative resection in one case, and local wedgy resection in one case.

全部病例均手术治，切除标本病理检查及免疫组化证实；