Abstract: A comprehensive tooth shape modeling scheme is presented to reconstruct the missing part of each tooth due to teeth adhesion on the 3D dental model.The adhesion region between two adjacent teeth on the 3D dental model is first detected by exploiting the minimum principal curvature information.Then,the adhesion region is cut off and the tooth profile opening caused by the removal of the adhesion region is filled with triangular patches adopting a local optimization scheme,it is then refined to form an intermediate restoration surface patch.The final restoration result is obtained by minimizing the surface energy to reflect the bio-characteristics of the single tooth.Experimental results demonstrate that the missing profile shape of a single tooth on the 3D dental model can be restored faithfully,thus meeting the requirements of dentistry,oral surgery & medicine.