Intro
Contents
1: The Three-Dimensional Nature of a Dental CBCT Scan
1.1 Introduction
1.2 Viewing Dental X-Ray and CBCT Images
1.2.1 Conventional Anatomical Planes
1.2.1.1 Axial
1.2.1.2 Coronal
1.2.1.3 Sagittal
1.2.2 Conventional Dental Radiographs
1.2.3 Right and Left in Coronal Plane
1.2.4 Right and Left in Axial Plane
1.2.5 Sagittal Default
1.2.6 Horizontal and Vertical Flip
1.2.7 One Plane, Sequential Slices
1.2.8 Three Planes, Single Slices
1.2.9 Videos
1.2.10 CBCT Versus MSCT

1.3 Three-Dimensional Arrangement of Teeth in the Dental Arch
1.3.1 In the Axial Plane
1.3.2 In the Sagittal Plane, Curve of Spee
1.3.3 In the Coronal Plane, Curve of Wilson
1.3.4 Occlusal and Skeletal Base Relationships
1.3.4.1 Angle's Molar Classification
1.3.4.2 Incisor Classification
1.3.4.3 Skeletal Pattern
1.4 Reconstructions from Original Scan Dataset
1.4.1 Reconstructing in Flat Planes
1.4.1.1 Oblique Versus True
1.4.1.2 Save a Screenshot
1.4.1.3 Orientation Lines
1.4.1.4 Example (Case D815)

1.4.2 Reconstructing a Synthetic Panoramic (Syn-Pan) Curved Plane
1.4.2.1 Anchor Points
1.4.2.2 Cross-Arch Sections
1.4.2.3 Case D801
1.4.3 How Not to Draw a Syn-Pan
1.4.4 3 D Reconstruction
1.4.4.1 Histogram
1.4.4.2 Volume Rendering
1.4.4.3 Movie of Volume-Rendered Image
1.4.4.4 Note of Caution
1.5 Summary
Reference
2: Visualisation of Dental Anatomy in CBCT Scans
2.1 Introduction
2.2 General Description of Permanent Teeth
2.2.1 Incremental Growth Pattern of Teeth
2.2.2 Number of Roots
2.2.3 Root Canals

2.3 Dental Notation Systems
2.3.1 Palmer Notation
2.3.2 FDI System
2.3.3 Hybrid System
2.3.4 Charting a Whole Quadrant or a Whole Mouth
2.4 CBCT Interpretation and Tooth Eruption Dates
2.4.1 Chronology of the Permanent Dentition
2.4.2 Concept of Age-Appropriate Tooth Development and Radiation Dose
2.5 Understanding the Cross-Sectional Images in this Chapter
2.6 Longitudinal and Transverse Sections through some Permanent Teeth (Case D801)
2.6.1 Videos
2.6.2 Incisor
2.6.2.1 Upper Central Incisor
2.6.2.2 Upper Lateral Incisor

2.6.2.3 Lower Central Incisor
2.6.3 Canine (Cuspid)
2.6.3.1 Upper Canine
2.6.3.2 Lower Canine
2.6.4 Premolar (Bicuspid)
2.6.4.1 Upper First Premolar
2.6.4.2 Upper Second Premolar
2.6.4.3 Lower First Premolar
2.6.4.4 Transition of Occlusal Surface Size, or Arch Thickness
2.6.5 Molar
2.6.5.1 Upper Permanent First Molar
2.6.5.2 Lower Permanent First Molar
2.7 Deciduous Teeth
2.7.1 Upper Deciduous Second Molar
2.7.2 Comparison between Deciduous Molar and Permanent Molar
2.8 Transverse Sections Through Crown and Root of Single Rooted Teeth