Assessment of Deviations of Implants Installed with Prototyped Surgical Guide and Conventional Guide: In Vitro Study

Author:

Rodrigues João Marcelo Meireles1,Santos Pâmela Leticia1,Mendonça Gustavo2,Faloni Ana Paula de Souza1,Finoti Livia Sertori3,Margonar Rogério1

Affiliation:

1. Department of Health Sciences, Postgraduation Program in Implantology, School of Dentistry, University of Araraquara, UNIARA, Araraquara, Sao Paulo, Brazil

2. Division of Prosthodontics, Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, Michigan, United States

3. Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, United States

Abstract

Abstract Objective The study aimed to assess the angular and linear deviations of implants installed in mannequins aided by surgical guides produced with the techniques of dual tomography (DT), model-based tomography (MT), and nonprototyped guide. Materials and Methods Implants were installed in mannequins of a partially edentulous maxilla and divided into three groups: Group C (n = 20), implants installed using the conventional technique with flap opening and conventional guide; Group DT (n = 20), implants installed using guided surgery with the dual tomography technique; and Group MT (n = 20), implants installed using the model-based tomography technique. After implant installation, the mannequin was subjected to a computed tomography (CT) to measure the linear and angular deviations of implant positioning relative to the initial planning on both sides. Results There was a higher mean angular deviation in group C (4.61 ± 1.21, p ≤ 0.001) than in groups DT (2.13 ± 0.62) and MT (1.87 ± 0.94), which were statistically similar between each other. Similarly, the linear deviations showed group C with the greatest discrepancy in relation to the other groups in the crown (2.17 ± 0.82, p = 0.007), central (2.2 ± 0.77, p = 0.004), and apical (2.34 ± 0.8, p = 0.001) regions. Conclusion The techniques of DT and MT presented smaller angular and linear deviations than the conventional technique with the nonprototyped guide. There was no difference between the two-guided surgery techniques.

Publisher

Georg Thieme Verlag KG

Subject

General Dentistry

Reference44 articles.

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