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Updated: Jun 17, 2026
Digital Hybrid Model Preparation for Virtual Planning of Reconstructive Dentoalveolar Surgical Procedures
Published on: August 5, 2021
Transference of virtual planning and planning over biomedical prototypes for dental implant placement using guided
Vinicius Nery Viegas1, Vinicius Dutra, Rogério Miranda Pagnoncelli
1Oral and Maxillofacial Surgery Department, School of Dentistry, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil. vnviegas@ig.com.br
Objectives:
This study evaluated the transference of virtual planning and planning over biomedical prototypes for dental implant placement using guided surgery.
Material And Methods:
This experiment was conducted with 11 identical replicas of a human edentulous mandible. For each mandible, models and surgical guides were manufactured using stereolithography. Simulated surgeries were performed on the prototypes. Following this, the implants were placed in the mandible replicas. Superposition of the tridimensional pre- and postoperative models was used for virtual evaluation. The real evaluation was conducted by linear measurements directly on the models.
Results:
The variations in angles and distances between the coronal, central and apical regions of the 22 implants evaluated in this study had mean values <1.45 degrees and 0.41 mm. The correlations between the positions of implant beds in each mandible were fair to very good, according to the distance analyzed and the interpretation guidelines used.
Conclusions:
According to the results of this study, the variations found in the transference of dental implant positioning to the operative field, determined during virtual planning and obtained in surgeries simulated with biomedical prototypes, confirm the reliability of guided surgery techniques in implantology.
