Dental implant location via surface scanner: a pilot study

BMC Oral Health

Shu-yi Li¹  Miao Zhou¹  Hui Zhou²  Yuan-ming Geng³ 

[1] Department of Oral and Maxillofacial Surgery, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Huangshadadao Road 39, 510182, Guangzhou, China;Department of Oral and Maxillofacial Surgery, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Huangshadadao Road 39, 510182, Guangzhou, China;Department of Stomatology, The Eighth People Hospital of Guangzhou, Huayinglu Road 8, 510060, Guangzhou, China;Department of Stomatology, Zhujiang Hospital, Southern Medical University, Gongyedadaozhong Road 253, 510282, Guangzhou, China;

关键词: Dental implant;    Accuracy;    Digital impression;    Intraoral scanner;    Extraoral scanner;    Cone beam computerized tomography;   

DOI  :  10.1186/s12903-020-01297-y

来源: Springer

【 摘 要 】

PurposeImplant location is performed after placement to verify that the safety of neighboring anatomic structure and the realizability of prosthetic plan. Routine postoperative location is based on radiological scanning and raises the concerns on radiation exposure and inconveniency in practice. In the present study a location method based on surface scanning was introduced and the accuracy of this method was assessed in vitro.Material and methodsA total of 40 implants were placed in 10 resin mandible models. The models were scanned with intraoral scanner (IS group) and extraoral scanner (ES group). The implant position was located with fusing the images of surface scanning and cone beam computerized tomography (CBCT) after implant placement. Deviations were measured between positions located by surface scanner and postoperative CBCT with the parameters: central deviation at apex (cda), central deviation at hex (cdh), horizontal deviation at apex (hda), horizontal deviation at hex (hdh), vertical deviation at apex (vda), vertical deviation at hex (vdh) and angular deviation (ad).ResultsIn IS group, the mean value of cda, cdh, hda, hdh, vda, vdh and ad was 0.27 mm, 0.23 mm, 0.12 mm, 0.10 mm, 0.21 mm, 0.19 mm and 0.72°, respectively. In ES group, the mean value of cda, cdh, hda, hdh, vda, vdh and ad was 0.28 mm, 0.25 mm 0.14 mm, 0.11 mm, 0.22 mm, 0.20 mm and 0.68°, respectively. The implant deviations in IS and ES groups were of no significant difference for any of the measurements.ConclusionsDental implant can be located via surface scanner with acceptable accuracy for postoperative verification. Further clinical investigation is needed to assess the feasibility of the method.

【 授权许可】

CC BY