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Effect of an auxiliary device on scanning accuracy for multiple implants: an in vitro comparative study
Mingyue Lyu1,2, Dingyi Xu3,4, Yizhou Li3,4
1State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, China. lvmingyue9292@163.com.
Head & Face Medicine
|April 28, 2025
Summary
The O-I buckle auxiliary device significantly improves intraoral scanning accuracy for complete dental arches. This digital impression technique enhances precision, potentially leading to better restoration fit and patient outcomes.
Area of Science:
- Dental technology
- Digital dentistry
- Oral implantology
Background:
- Intraoral scanning (IOS) offers a digital alternative to conventional impressions.
- Accuracy challenges persist, especially for complete edentulous arches with multiple implants.
Purpose of the Study:
- To evaluate the impact of the O-I buckle, a consumable auxiliary device, on the accuracy of complete arch intraoral scanning.
- To compare the trueness and precision of IOS with and without the O-I buckle against conventional impressions.
Main Methods:
- A mandibular model with six implants served as the reference.
- Three impression techniques were tested: conventional splinted open-tray (CI), IOS, and IOS with O-I buckle (OI).
- Trueness and precision were assessed using 3D inspection software across different scanning ranges.
Main Results:
- Both impression method and scanning range significantly affected trueness and precision (p < .001).
- IOS with O-I buckle demonstrated superior trueness and precision compared to standard IOS, particularly for extensive arch configurations.
- Accuracy of IOS with O-I buckle was comparable to conventional impressions for four and five implants.
Conclusions:
- The O-I buckle significantly enhances the accuracy of multiple-implant intraoral scanning for complete digital dental impressions.
- This advancement in IOS accuracy can contribute to improved passive fit of restorations and better patient outcomes.
- The O-I buckle presents a convenient and cost-effective method to improve digital impression accuracy in complete edentulous cases.
