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Tooth Anatomy

Tooth Anatomy

The human tooth enables us to eat a variety of foods, speak clearly, and even aid in shaping our faces. Teeth are composed of various elements that work together. Here's a detailed look at the anatomy of a human tooth.
The Crown, Neck, and Root
The visible part of the tooth is referred to as the crown. It's covered by enamel, the hardest substance in the human body. The crown is uniquely shaped for each type of tooth, allowing for different functions such as cutting, tearing, or grinding food.

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Related Experiment Video

Updated: May 12, 2026

Guided Endodontics: Three-Dimensional Planning and Template-Aided Preparation of Endodontic Access Cavities

Guided Endodontics: Three-Dimensional Planning and Template-Aided Preparation of Endodontic Access Cavities

Published on: May 24, 2022

Endodontic access cavity simulation in ceramic dental crowns.

Mitchell Cuddihy¹, Catherine M Gorman, Francis M Burke

¹Department of Materials, Royal School of Mines, Imperial College London, London, United Kingdom.

Dental Materials : Official Publication of the Academy of Dental Materials

|April 17, 2013

Summary

This study demonstrates that non-uniform rational B-spline (NURBS) models from μCT scans offer a quick method for simulating dental access cavities. Strain analysis effectively compares different cavity designs, enhancing quantitative comparisons.

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Last Updated: May 12, 2026

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Published on: December 20, 2024

Area of Science:

Biomaterials Science
Dental Engineering
Computational Mechanics

Background:

Accurate simulation of dental restorations is crucial for predicting performance.
Virtual modeling of ceramic crowns and access cavities presents unique challenges.
Non-uniform rational B-spline (NURBS) offers a robust method for complex geometric modeling.

Purpose of the Study:

To evaluate the efficacy of non-uniform rational B-spline (NURBS) based solid geometric models for simulating ceramic crown access cavities.
To establish a computational approach for comparing different access cavity configurations using strain analysis.
To assess the flexibility and speed of NURBS modeling for virtual endodontic simulations.

Main Methods:

Development of a 3D NURBS geometric solid model of a ceramic crown using micro-computed tomography (μCT) scans.
Virtual creation and modification of three distinct access cavity configurations within the NURBS model.
Finite element analysis (FEA) of each configuration under simulated in vivo loading conditions, followed by post-processing of strain results.

Main Results:

The NURBS-based geometric model proved to be a flexible and rapid tool for simulating access cavities.
Preliminary findings indicate that post-processed strain results from FEA are effective comparators for evaluating different access cavity designs.
Quantitative comparison of strain components orthogonal to surface flaws provided insights into configuration performance.

Conclusions:

Generating NURBS solid models from μCT scans is an efficient methodology for simulating various access cavity configurations in dental crowns.
Advanced post-processing of FEA results enables improved quantitative comparisons between distinct access cavity designs.
This approach offers a valuable virtual simulation tool for optimizing endodontic access cavity preparation.