Analysis of accuracy of single tooth implants in different regions guided by digital guide plates
Objective To explore the impact of single tooth loss area on implant accuracy guided by digital guide plate,and to study the causes of errors and possible solutions.Methods 132 implants implanted in 93 patients were studied.Pa-tients'preoperative intraoral scanning data or traditional mold acquisition data were combined with CBCT data,and 3D print-ing surgical guide plate was used to guide implant implantation.After surgery,the absolute error value of the deviation dis-tance between the three-dimensional direction of the implant and the preoperative design were measured by CBCT,and the errors before and after treatment were compared.Results There was no statistically significant difference in implant errors between anterior and posterior tooth loss(P>0.05),when distal-extension was missing,the errors in the buccal lingual and coronal root directions were higher than the implantation errors in the anterior and posterior tooth areas(P<0.001).Howev-er,in cases with distal-extension absence,the surgical guide plate made by traditional mold retrieval chamber scanning data had significantly higher implantation accuracy in the coronal root direction compared to that made by intraoral scanning data(P<0.001).Conclusion Among cases with single tooth implantation,the errors in the buccal lingual and coronal root di-rections of cases with distal-extension absence are significantly higher than cases without distal-extension absence under the guidance of the digital surgical plate.But in cases with distal-extension absence,the digital guide plate made by scanning the traditional research model can reduce the implantation error of the missing site at the distal-extension absence.
万方数据
维普
