CBCT — Cone Beam Computed Tomography — is the essential diagnostic tool of digital implantology. Conventional panoramic X-rays provide only a two-dimensional (2D) image, making it impossible to reliably determine the critical measurements required for implant placement: bone volume, distance to the nerve canal, and sinus proximity. CBCT eliminates these limitations by creating a complete three-dimensional (3D) model of the jaw.
What Is CBCT?
Cone beam CT takes hundreds of images as the X-ray source rotates 360° around the patient’s head. These images are computationally reconstructed into a full 3D model of the jawbones, teeth, nerve canals, and sinuses. The result is stored in DICOM format, which 3Shape Implant Studio reads natively — no conversion required.
Nerve Canal Analysis — The Most Critical Measurement
The inferior alveolar nerve canal runs through the mandible (lower jaw), supplying sensation to the lower lip, chin, and anterior teeth. If an implant contacts this canal, permanent numbness can result — one of the most serious complications in implantology. CBCT maps the canal’s exact three-dimensional path. 3Shape Implant Studio then automatically measures the minimum distance between each planned implant and the canal, alerting the clinician when safe margins are approached.
Bone Volume Assessment
Every implant requires minimum bone dimensions that depend on its diameter, length, and system. CBCT precisely measures bone width, height, and density (in Hounsfield units) at every potential implant site. Bone density is classified from D1 to D4 — this classification directly determines whether immediate loading is viable.
Maxillary Sinus Analysis
For implants in the posterior upper jaw, the position of the maxillary sinus is decisive. CBCT precisely maps the full sinus volume and the distance from the sinus floor to the alveolar crest. The decision of whether sinus augmentation is necessary is made based on these measurements. In many cases, a tilted implant protocol allows placement without sinus penetration — a decision that can only be reliably made using CBCT data.
Integration with 3Shape Implant Studio
The CBCT DICOM file is loaded directly into 3Shape Implant Studio. The software superimposes the CBCT with intraoral scan data: bone structure, tooth surface, and the planned prosthesis are visible simultaneously on a single screen. In this merged 3D model, each implant’s position, angle and depth are planned with millimeter precision. When planning is complete, an STL file is exported and 3D-printed into a surgical guide.
Conclusion
CBCT imaging is an inseparable part of the diagnostic standard in modern implantology. Nerve canal distance, bone volume, sinus position — none of these parameters can be reliably measured with a conventional X-ray. The precision of digital planning is directly tied to the quality of the CBCT analysis. At Digital Implant in Baku, every implant plan begins with CBCT analysis — because precision starts with diagnostics.