Purpose
The position of dental implants is generally verified through imaging exams, even though its use exposes patients to radiation. Intraoral scanning (IOS) may be a suitable alternative to using radiographic imaging to verify implant position. Using polyurethane jaw models, the purpose of this in-vitro study was to measure and compare implant positions determined by IOS and cone-bean computed tomography (CBCT).
Methods
The research team installed 120 implants in 30 edentulous polyurethane jaws, four dental implants in each prototype. Four scanbodies were attached to the implants, and a scanning of each mandible was acquired using an intraoral scanner (CS 3600). All prototypes were also submitted to CBCT. Then, the 3D scan files in STL (Standard Tessellation Language) format were superimposed on the DICOM (Digital Imaging and Communications in Medicine) images of the tomographic mandibles.
Researchers evaluated the accuracy of IOS by the metric analyses of deviations between the position of the implants projected by the IOS versus the detected tomographically, in which CBCT served as the gold standard, using a free software for digital planning (Bluesky 4 - Grayslake, IL, USA). The following measures were analyzed: radial deviations at the shoulder (Xc) and at the apex of the implants (Xa), height deviation (Xh) and axial deviation.
Bland-Altman and a paired t-test were applied to verify the reproducibility between measurements and a t-test for a mean was applied to compare the measurements with zero value.
Results
The results showed Xc and Xa deviation means of 0.14 ± 0.09 mm and 0.12 ± 0.12 mm, respectively. The Xh mean was 0.2 ± 0.12 mm and the axial deviation mean was 0.71° ± 0.66°. T-test showed a statistically significant difference when the 4 means were compared to zero value, represented by the CBCT (P < .0001).
Conclusions
There was a statistically significant difference in the scanned measures compared to CBCT as the standard, but the differences may not be clinically significant. The IOS utilization to evaluate the position of dental implants is a radiation-free and reproducible method, with the advantage of not generating metal artifacts. Further clinical studies are needed to validate this new method of postoperative evaluation.
Isabela Polesi Bergamaschi, Karine Laura Cortellazzi, Alexander Tadeu Sverzut. "Is Intraoral Scanning Accurate to Evaluate Dental Implant Position? An In-Vitro Study." 2 December 2022. DOI:https://doi.org/10.1016/j.joms.2022.11.018
Implantology 25 June 2024
Diabetes mellitus is a prevalent medical disorder. It is often accompanied with systemic adverse sequelae, such as wound healing alterations, which may affect osseointegration of dental implants.
Implantology 11 March 2024
The prevalence of hypertension among adults aged 30 to 79 in 2019 was 32% in women and 34% in men, making it one of the most common chronic medical conditions worldwide and a leading cause of...
Ridge Oral Surgery has completed a major milestone as it celebrates its first-year anniversary.
News 25 September 2023
Dentsply Sirona expands DS Academy clinical education with launch of new online campus
Dentsply Sirona is expanding its digital education opportunities with a new DS Campus online. Dental professionals will find a range of on-demand content covering topics in implant dentistry,...
News 05 September 2023
Neoss Group partners with Apex-Material e Equipamento Médico for distribution in Portugal
This partnership marks a significant milestone in Neoss Group's dental implants expansion strategy and will enable the distribution of products and solutions throughout the Portuguese market.
The ‘hygiene hypothesis’ suggests that a reduction in the microbial exposure due to improved health measures has contributed to an immunological imbalance in the intestine and increased the...
Editorials 14 February 2025
Lay Soon and Elissa Elmorr each took first place in the Graduate Trainee and Dental Predoctoral Oral Presentation competitions respectively at the 2025 School of Dentistry Research Day on Wednesday.
vVARDIS, a Swiss high-growth dental company, and OrbiMed, a leading healthcare investment firm, recently announced the closing of a $35 million financing.
News 14 February 2025
Greenland Advanced Oral Care is proud to announce the addition of Dr. Eryn Huber to its expert dental team.
News 14 February 2025
Torch Dental and the Sacramento District Dental Society Partner for Smarter Procurement
Torch Dental, a pioneering technology platform specializing in dental supply management, ordering, and budgeting, is thrilled to partner with the Sacramento District Dental Society (SDDS), an...