Use of cross-laser as an auxiliary method in Class III patients diagnosis and treatment planning

Vol. 13 – Number 52 – 2020 Case report Page 52-65 Use of cross-laser as an auxiliary method in Class III patients diagnosis and treatment planning Giovanni Modesto Vieira¹ Eduardo Jacomino Franco² Abstract The spatial position of the cranio-maxillary-mandibular complex is related to the natural position of the head, which is not always easily obtained due to vicious and unconscious postural compensation. The cross-laser allows the fixation of certain face parameters, which lead to natural and adequate positioning of the head for lateral teleradiography in conjunction with facial analysis. The severity of Pattern III skeletal discrepancy is masked by soft tissues, and is best investigated and quantified with the patient in smiling profile, relative to true vertical, and can be compared with cephalometric analysis. The treatment of this discrepancy is directly related to its severity. This article aims to demonstrate the relevance of the cross-laser as an auxiliary tool in the analysis of the facial severity of patients Pattern III. Three clinical cases with different severities for Pattern III and their respective treatment approaches are presented. Descriptors: Laser, malocclusion, tooth extraction, orthognathic surgery. ¹ PhD in Medical Sciences – UnB, Coordinator of Specialization in Orthodontics – ABCD-DF. ² Master in Orthodontics – FOB / USP, Coordinator of Specialization in Orthodontics – ABCD-DF.