Additive manufacturing is becoming increasingly important in dentistry

Additive
manufacturing is becoming increasingly important in dentistry for the in office production of
surgical guides. The development of cost-effective desktop stereolithography
(SLA) printing systems and the corresponding resins makes this novel technique
accessible to dental offices and dental laboratories. Furthermore, guided
surgical drills which do not provide metallic sleeves could make even simpler
all the process. Recently published study has found that implant
surgical guides produced using in office printing system could be a “convenient,
cost-effective, and an accurate means of providing implant surgery for patients (Deeb 2017).
Although promising results, final implant accuracy and template
biocompatibility remain the main concerns. In fact, the same study also confirmed that
there is little loss in accuracy for in-house printed guides (Deeb 2017).
Another study confirm that biocompatibility of the resins used for fabrication
of surgical template depends by the processing stages of the materials, and meticulous
adherence to processing guidelines, especially postcuring, is of clinical
relevance (Kurzmann 2017). Hence, there is still lack of evidence to suggest the in office
production of surgical guides. Moreover, lack of pre- and post-quality control have to
taken into account.Today, evidence-based methods for
placing implants include both freehand approach, and laboratory or computer-aided
design/computer-aided manufacturing generated static guide stents that are
either tooth, mucosa, or bone supported. Looking at the future, dynamic
navigation/guidance could be use to visualize implant site development
while the drills are in function. Major advantages are the deviations from
the predetermined plan can be seen in “real time” and changes to the original plan can be made
at the time of surgery. Full guidance is possible, as real-time visualization
and adjustment of position can be made at any time. Dynamic
navigation systems can achieve accuracy of implant placement similar to
static guides and is an improvement over freehand implant placement (Block 2016). Nevertheless, there was a
learning curve to achieve proficiency. At now, clinical reports
are still limited, but implant integration rates seems to be similar to
those of conventional drilling methods.

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