Accuracy and Complications of Computer-Designed Selective Laser Sintering Surgical Guides for Flapless Dental Implant Placement and Immediate Definitive Prosthesis Installation

Accuracy and Complications of Computer-Designed Selective Laser Sintering Surgical Guides for Flapless Dental Implant Placement and Immediate Definitive Prosthesis Installation

Author Di Giacomo, Giovanni A. Autor UNIFESP Google Scholar
Silva, Jorge V. da Google Scholar
Silva, Airton M. da Google Scholar
Paschoal, Gustavo H. Google Scholar
Cury, Patricia R. Google Scholar
Szarf, Gilberto Autor UNIFESP Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
Renato Archer Informat Technol Ctr
Universidade Federal da Bahia (UFBA)
Abstract Background: Computer-aided dental implant placement seems to be useful for placing implants by using a flapless approach. However, evidence supporting such applications is scarce. the aim of this study is to evaluate the accuracy of and complications that arise from the use of selective laser sintering surgical guides for flapless dental implant placement and immediate definitive prosthesis installation.Methods: Sixty implants and 12 prostheses were installed in 12 patients (four males and eight females; age range: 41 to 71 years). Lateral (coronal and apical) and angular deviations between virtually planned and placed implants were measured. the patients were followed up for 30 months, and surgical and prosthetic complications were documented.Results: the mean +/- SD angular, coronal, and apical deviations were 6.53 degrees +/- 4.31 degrees, 1.35 +/- 0.65 mm, and 1.79 +/- 1.01 mm, respectively. Coronal and apical deviations of < 2 mm were observed in 82.67% and 58.33% of the implants, respectively. the total complication rate was 34.41%; this rate pertained to complications such as pulling of the soft tissue from the lingual surface during drilling, insertion of an implant that was wider than planned, implant instability, prolonged pain, midline deviation of the prosthesis, and prosthesis fracture. the cumulative survival rates for implants and prostheses were 98.33% and 91.66%, respectively.Conclusions: the mean lateral deviation was < 1.8 mm, and the mean angular deviation was 6.53 degrees. However, 41.67% of the implants had apical deviation > 2 mm. the complication rate was 34.4%. Hence, computer-aided dental implant surgery still requires improvement and should be considered as in the developmental stage. J Periodontol 2012;83:410-419.
Keywords implants
surgery
computer-assisted
Language English
Sponsor Daniel Takanori Kemmoku Fellowship
Cesar Augusto Rocha Laureti Fellowship
Date 2012-04-01
Published in Journal of Periodontology. Chicago: Amer Acad Periodontology, v. 83, n. 4, p. 410-419, 2012.
ISSN 0022-3492 (Sherpa/Romeo, impact factor)
Publisher Amer Acad Periodontology
Extent 410-419
Origin http://dx.doi.org/10.1902/jop.2011.110115
Access rights Closed access
Type Article
Web of Science ID WOS:000302832100004
URI http://repositorio.unifesp.br/handle/11600/34787

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