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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...

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Dental Implants: Adjacent Tooth Proximity and Contact.

Dennis Flanagan

The Journal of Oral Implantology

|June 17, 2025

Summary

Determining safe proximity for dental implants near adjacent teeth is complex. Factors like implant size and patient health influence risk, necessitating further research into optimal implant placement strategies.

Area of Science:

Dental Implantology
Oral Surgery
Periodontology

Background:

Dental implant placement often occurs in close proximity or contact with adjacent natural teeth.
This proximity can result from anatomical variations, surgical errors, or tooth migration.
Potential risks include damage to adjacent tooth roots from implant drills or the implant itself.

Purpose of the Study:

To discuss the complexities of determining safe proximity between dental implants and adjacent tooth roots.
To highlight the lack of consensus on a universally safe distance.
To review factors influencing potential complications and the need for further research.

Main Methods:

Review of existing literature and theoretical considerations regarding dental implant proximity.

Keywords:

bone volume components necrosis osteons remodeling thin bone

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Discussion of factors influencing bone remodeling and root damage.

Introduction of a grading system for the degree of tooth root contact.

Main Results:

A 1.5mm space is an arbitrary guideline with no scientific consensus.
Larger implant diameters pose a theoretical risk to bone remodeling near adjacent roots.
Smaller or mini-implants may have less impact on bone remodeling.
A grading system (Grade 1-4) categorizes root contact severity, from periodontal ligament contact to pulpal penetration.

Conclusions:

Safe proximity is multifactorial, influenced by implant size, root displacement, bone quality, and patient factors.
The degree of contact can be classified, indicating varying levels of risk.
Further research is crucial to establish evidence-based guidelines for dental implant proximity.