Is the positioning guide mandatory for the virtual planning of orthognathic surgery?: a randomized double-blind trial - Queiroz, Adalmir Gonzaga dos Santos; Jodas, Claudio Roberto Pacheco; Kaba, Shajadi Carlos Pardo; Teixeira, Rubens Gonçalves (Journal of Stomatology, Oral and Maxillofacial Surgery, 2025)