@article{martins_lederman_2013,  title={Virtual planning and construction of prototyped surgical guide in implant surgery with maxillary sinus bone graft},  volume={28},  ISSN={0102-8650},  url={https://doi.org/10.1590/S0102-86502013000900010},  DOI={10.1590/S0102-86502013000900010},  number={9},  journal={Acta Cirúrgica Brasileira},  publisher={Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia},  author={Martins, Renato Jahjah Cunha and Lederman, Henrique Manoel},  year={2013},  month={Sep},  pages={683–690} }