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Evaluation of the accuracy of a novel surgical guide for flapless dental implant placement for immediate loading in edentulous jaws.

Authors
  • Di Giacomo, Giovanni de Almeida Prado1
  • Cury, Patrícia2
  • Moreira da Silva, Airton3
  • Lopes da Silva, Jorge Vicente3
  • Souto, Carlos Eduardo Pompeo4
  • Martines, Rodrigo Tadashi5
  • Fukushima, Julia Tizue6
  • Ajzen, Sergio7
  • 1 Universidade Federal de Sao Paulo Escola Paulista de Medicina Diagnostico por Imagem Av Brigadeiro Luis Antonio N. 2504 - conj 102 BRAZIL São Paulo SP 01402000 +5511981997713 - Department of Diagnostic Imaging, School of Medicine, Federal University of Sao Paulo, Brazil.- Three-Dimensional Technology Division, Renato Archer Information Technology Center (CTI), Campinas, Brazil. , (Brazil)
  • 2 Department of Periodontics, School of Dentistry of the Federal University of Bahia, Salvador, Brazil. , (Brazil)
  • 3 Three-Dimensional Technology Division, Renato Archer Information Technology Center (CTI), Campinas, Brazil. , (Brazil)
  • 4 Private Clinic Specialist in Implantology, São Bernardo do Campo, Brazil. , (Brazil)
  • 5 Department of Collective Health, School of Medicine, University of Santo Amaro, Sao Paulo, Brazil. , (Brazil)
  • 6 University of Sao Paulo Faculty of Medicine and Cancer Institute.
  • 7 Department of Diagnostic Imaging, School of Medicine, Federal University of Sao Paulo, Brazil. , (Brazil)
Type
Published Article
Journal
The Journal of oral implantology
Publication Date
Jun 05, 2021
Identifiers
DOI: 10.1563/aaid-joi-D-20-00071
PMID: 34091668
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

This study was designed to evaluate the accuracy of a novel computer-designed and selectively laser sintered surgical guide for flapless dental implant placement in the edentulous jaw. Fifty dental implants were placed in 11 patients with at least one totally edentulous jaw. Initially, cone-beam computed tomography (CBCT) was performed in each patient to define the virtual position of the dental implants based on the assessment of bone availability and the proposed dental prosthesis. After virtual planning, 3D surgical guides were printed using selective laser sintering. CBCT was repeated after the surgery, and the pre-and postoperative images were overlapped in the CAD software to compare the planned and actual positions of the dental implants using a one-sample t-test. The mean ± angular standard deviation between the long axes of the planned and final dental implant positions was 4.58 ±2.85 degrees; The linear deviation in the coronal position was 0.87 ± 0.49 mm and in the apical region of the dental implants was 1.37 ± 0.69 mm. These differences were statistically significant (p <0.001). The proposed modifications reduced the deviations, resulting in an improvement in the technique. We were able to place implants and temporary prostheses using the present protocol, taking into account the differences between the planned and final positions of the dental implants.

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