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Article Abstract
Purpose: We used a single-variable method to analyze the influence of the guide sleeve height of a conventional template on implantation accuracy in vitro and improve the function of short-sleeve templates by adding a visual direction-indicating guide (VDING).
Materials And Methods: We created 100 copies of a volunteer's dentition plaster model. The normal template (NT) and the VDING template (VT) were made with guide sleeves 2, 5, 8, and 10 mm in height. Additionally, a freehand (FH) group and a group with an FH-based visual guide were used. Simulated implantation in an emulated head model was performed in each group. After surgery, cone-beam computed tomography images of the plaster were used for registration, and the accuracy was compared among the groups.
Results: When the NT sleeve height was 5 mm or less, increased deviation was found, and the results for some of the accuracy indicators were not different from those in the FH group. The accuracy of sleeves 5 mm or less in height was better in the VT group than in the NT or FH group.
Conclusions: Use of the NT with a guide sleeve height of 5 mm or less can introduce large deviations in implantation, which can be prevented by the VT. However, the use of the VDING alone was not sufficient.
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| http://dx.doi.org/10.1016/j.joms.2019.05.017 | DOI Listing |
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