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Teeth

Teeth

The formation of teeth, also known as odontogenesis, is a complex process that begins in utero, around the sixth week of embryonic development. There are three stages to this process: the bud stage, the cap stage, and the bell stage.
In the bud stage, the tooth germ (an aggregation of cells) starts to form in the developing jawbone. During the cap stage, the tooth germ differentiates into enamel organ, dental papilla, and dental sac, which will later develop into the tooth's enamel, dentin...

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...

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A Finite Element Approach for Locating the Center of Resistance of Maxillary Teeth

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Published on: April 8, 2020

Development of an Index for a Tooth to Receive a Full-Coverage Crown.

Amit Porwal, Anurag Satpathy

The International Journal of Prosthodontics

|March 11, 2024

Summary

A new Tooth Crownability Index (TCI) was developed to assess a tooth's suitability for a full-coverage crown. This index demonstrated excellent agreement and reproducibility among dental examiners, aiding treatment planning.

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Last Updated: Jul 1, 2025

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Published on: December 20, 2024

Area of Science:

Dental Prosthodontics
Dental Diagnostics
Clinical Assessment

Background:

Assessing a tooth's condition for full-coverage crowns is crucial for successful treatment outcomes.
Standardized criteria are needed for objective evaluation of tooth restorability.

Purpose of the Study:

To develop and validate a measurable system, the Tooth Crownability Index (TCI), for assessing tooth status before full-coverage crown placement.
To evaluate the reproducibility of the TCI among dental practitioners.

Main Methods:

An expert consensus guided the development of the TCI, incorporating periodontal, endodontic, and prosthodontic factors with defined severity stages and weights.
The TCI score was computed based on selected factor-stage combinations.
A validation study involved four independent examiners assessing 40 teeth using clinical and radiologic criteria.

Main Results:

The TCI demonstrated high inter-examiner reproducibility (kappa = 0.93) and excellent agreement (ICC = 0.993).
No statistically significant differences were found in mean TCI or factorial scores among examiners.
The distribution of examiner selections closely mirrored initial distributions.

Conclusions:

The developed Tooth Crownability Index (TCI) is a reliable tool for assessing a tooth's suitability for full-coverage crowns.
TCI offers excellent agreement and reproducibility, establishing it as a baseline for treatment planning and research outcome assessment.