Date of Graduation
School of Dentistry
Objectives: To determine the accuracy of dental implants placed using a dual scan CBCT protocol with a SLA 3D printed mucosa supported surgical guide using a flapless surgical approach with regard to sleeve position, type of implant, and regional location in the maxillary arch.
Methods: Nine patients received 4 dental implants utilizing a fully guided, flapless approach with a mucosa supported SLA surgical guide with 3 fixation pins. Implants were immediately loaded using an attachment placed in an existing Maxillary complete denture. Accuracy of implant positions were evaluated by the Treatment Evaluation module of coDiagnostiX (DentalWings, Montreal, Canada). Statistical analysis was completed based on the sleeve position, type of implant, and regional location in the maxillary arch.
Results: An average angular deviation of 3.0° was seen. An average 3D offset of 1.05 mm and 1.10 mm were seen at the base and tip of the implants respectively. A statistically significant difference was seen between BLT and BLX implants with respect to 3D offset of the implant platform. A statistically significant increase in average apical 3D offset of implants were seen in implants placed in posterior regions when compared to anterior regions.
Conclusions: A fully guided, flapless approach using Straumann BLT or BLX implants demonstrated an angular accuracy within 3° and approximately 1 mm of 3D offset from pre-surgical planning. BLT implants were seen to have an increased degree of inaccuracy. Implants placed in posterior regions of the maxilla demonstrated a greater degree of inaccuracy than those placed in anterior regions.
Kordusky, Benjamin Andrew, "Accuracy of BLX and BLT guided implants in the edentulous maxilla: an in vivo study" (2020). Graduate Theses, Dissertations, and Problem Reports. 7544.