Accuracy And Patient-Centered Results Of Static And Dynamic Computer-Assisted Implant Surgery In Edentulous Jaws:a Retrospective Cohort Study & Case Reports

Background and objectives:Computer-assisted implant surgery(CAIS)has been frequently used in the implant dentistry.Computer-assisted implant surgery includes static computer-assisted implant surgery(s-CAIS)and dynamic computer-assisted implant surgery(d-CAIS).Surgical guide templates are used to guide implant insertion in s-CAIS while dynamic navigation systems are used to guide implant insertion in d-CAIS.In fully edentulous patients,it is challenging to achieve high accuracy,possibly due to the absence of teeth that might complicate the stabilization of the surgical guide in sCAIS and reduce the precision of digital diagnostic procedures in d-CAIS.The reduction of accuracy may lead to a series of significant esthetic and prosthetic complications.In addition to the accuracy of implant placement,patient-centered results,which reflect patients’ perceptions after receiving dental implant surgery,have become an essential parameter of treatment success.With an understanding of patient-centered results,clinicians can ensure patients’ perception of need,involve patient preference in clinical decision-making,and improve clinician-patient communication and quality of care.The current retrospective study aimed to compare the accuracy of implant position and patient-centered results in fully edentulous patients receiving multiple implants by sCAIS and d-CAIS.The null hypothesis was that there are no differences between these two surgical techniques in implant positioning accuracy and patient-centered results in terms of intraoperative and postoperative discomfort.Methods:The current study retrospectively evaluated a total of 110 implants placed in 22 fully edentulous patients via s-CAIS or d-CAIS(n=11).The accuracy of implant positioning was assessed by measuring the implant’s angular,platform,and apex deviation between the preoperative designs and postoperative,respectively.The patient-centered results including preoperative,intraoperative,and postoperative experiences were extracted from the medical record.The nested t-test and Chi‐square test were used to compare the postoperative accuracy and patients centered results between s-CAIS and d-CAIS,respectively.Results:The mean angular,platform,and apex deviation of s-CAIS were 2.232,1.46±1.19 mm,and 1.61±1.09 mm,respectively,which were significantly different from that of d-CAIS(3.84±2.75°,1.05±0.45 mm,and 1.01±0.51 mm,respectively).Furthermore,the implants of the s-CAIS group deviated significantly(p<0.001)more toward the coronal direction than the d-CAIS group.Patient-centered results showed significantly more patients in the s-CAIS group(11 out of 11)reported foreign body sensations during surgery.Conclusion:Compared to s-CAIS,d-CAIS is a reliable technique for the placement of multiple implants in fully edentulous patients with less linear deviation and less foreign body sensation.