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International Journal of Dentistry
Volume 2017 (2017), Article ID 4292081, 9 pages
Clinical Study

Accuracy Evaluation of a Stereolithographic Surgical Template for Dental Implant Insertion Using 3D Superimposition Protocol

1Faculty of Midwifery and Medical Assisting, “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania
2“Carol Davila” University of Medicine and Pharmacy and Private Practice, Bucharest, Romania

Correspondence should be addressed to Corina Marilena Cristache; moc.liamg@ehcatsircaniroc

Received 31 December 2016; Revised 4 April 2017; Accepted 16 April 2017; Published 7 May 2017

Academic Editor: Izzet Yavuz

Copyright © 2017 Corina Marilena Cristache and Silviu Gurbanescu. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The aim of this study was to evaluate the accuracy of a stereolithographic template, with sleeve structure incorporated into the design, for computer-guided dental implant insertion in partially edentulous patients. Materials and Methods. Sixty-five implants were placed in twenty-five consecutive patients with a stereolithographic surgical template. After surgery, digital impression was taken and 3D inaccuracy of implants position at entry point, apex, and angle deviation was measured using an inspection tool software. Mann–Whitney test was used to compare accuracy between maxillary and mandibular surgical guides. A value < .05 was considered significant. Results. Mean (and standard deviation) of 3D error at the entry point was 0.798?mm (±0.52), at the implant apex it was 1.17?mm (±0.63), and mean angular deviation was 2.34 (±0.85). A statistically significant reduced 3D error was observed at entry point , at implant apex , and also in angular deviation in mandible when comparing to maxilla. Conclusions. The surgical template used has proved high accuracy for implant insertion. Within the limitations of the present study, the protocol for comparing a digital file (treatment plan) with postinsertion digital impression may be considered a useful procedure for assessing surgical template accuracy, avoiding radiation exposure, during postoperative CBCT scanning.