The Effect of Ceramic and Conventional Implant Drill Materials on Heat Generation in Osteotomy Sites
View/ Open
Publisher
DOI
10.26226/m.5efe04779b888de4950e77ba
Metadata
Show full item recordAbstract
Background: In‑office devices are increasingly used in dental practices to mill “chairside” restorations for increased turnover.
New functions permit milling implant surgical guides, thus cutting the time and cost of treatment. This study compares the
accuracy of chairside‑milled surgical guides(CMG) with that of high‑accuracy laboratory‑based three‑dimensional (3D)‑printed
guides (PGs).
Methods: In this in vitro study, 10 bone‑level cylindrical implants (4 mm × 13 mm) were placed using both guide types (five
for each) in 10 similar prefabricated plastic models with the aid of a specially designed machine. The positions of the placed
implant were compared to the planned positions by superimposing postsurgical cone‑beam computed tomography scans over
the preoperative scans and by measuring the horizontal, vertical, and angular deviations within each study group.
Results: The horizontal deviation at the implant neck was 0.37 mm ± 0.16 for CMG and 0.84 mm ± 0.35 for PG (P < 0.05).
The horizontal deviation at the apex was greater; 0.76 mm ± 0.49 for CMG and 1.70 mm ± 0.46 for PG (P < 0.05). The
vertical deviations in both groups were smaller than the horizontal values and almost identical at the neck and apex within
each group (0.26 mm ± 0.13) and (0.37 mm ± 0.25) for CMG and PG, respectively (P > 0.05). The angular deviation of the
implant’s long axis for PG (4.10° ± 1.96°) was twice as large as CMG (2.0° ± 1.37°), but the difference was not statistically
significant (P = 0.08).
Conclusion: Chairside milled guides demonstrated higher accuracy and predictability compared to laboratory‑based 3D‑PGs.
Keywords: Chairside milled guides, computer‑aided surgery, computer‑aided surgery/computer‑aided manufacturing, data
accuracy, dental implants, image‑guided surgery, three‑dimensional printing