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PLANNING-Ball bearing stents and drill guides
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The next stage is the fabrication of a clear acrylic template which has
5mm ball bearings attached in the approximate area of the proposed
placement. This is a radiographic stent and is used for the determination
of the available bone height. The use of 5mm ball bearings allows for the
calibration of the radiograph.
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When the area of implant placement has been determined, a surgical
drill guide is made. This clear acrylic stent is perforated on the implant
site and is used to precisely mark the area in the oral cavity for the
placement. There is more than one type of drill guide and the photo-
graphs below show the standard and 3D type.
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It has been well documented
that meticulous planning and
patient evaluation can
dramatically reduce errors
and difficulties in the
placement of the implant
and subsequent restoration.
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