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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.
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Veneer

Veneer

Veneer refers to a thin sheet of wood, typically produced to a thickness of about one-eighth of an inch or less. This material is crafted through various methods, the most common being rotary cutting. In this process, a log is mounted into a large lathe and spun against a knife edge, peeling off a continuous strip of wood as the knife penetrates deeper into the rotating log, creating a rotary-cut veneer.
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Post and Core for Telescopic Crown-Retained Dentures-An In Vitro Comparison of Different Materials Using Chewing

Jonas Adrian Helmut Vogler¹, Milan Rachold¹, Bernd Wöstmann¹

¹Dental Clinic-Department of Prosthodontics, Justus Liebig University, Schlangenzahl 14, 35392 Giessen, Germany.

Dentistry Journal

|April 27, 2026

Summary

This summary is machine-generated.

Customized CAD/CAM posts and cores show superior performance for telescopic crown-retained dentures (TCDs). This advanced post and core (PC) treatment prevents tooth fracture and decementation, improving denture stability.

Keywords:

CAD/CAM chewing simulation post and core telescopic denture

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Area of Science:

Dental Materials Science
Prosthodontics
Biomaterials Engineering

Background:

Post and core (PC) treatment is crucial for endodontically treated teeth supporting telescopic crown-retained dentures (TCDs).
Traditional PC materials often exhibit mechanical property mismatches or poor fit, leading to abutment tooth failure (fracture, decementation).
Advancements in CAD/CAM technology offer potential for improved PC fabrication and performance in TCD applications.

Purpose of the Study:

To compare the clinical performance of CAD/CAM fabricated posts and cores (PC) against customized cast PCs (CPC) and prefabricated fiber-reinforced PCs (PFPC).
To evaluate the survival rates and failure modes of different PC types under simulated chewing conditions for TCD abutments.

Main Methods:

Utilized a chewing simulator to test CAD/CAM PC, CPC, and PFPC systems in a TCD setup.
Monitored for specific failure modes including tooth fracture and decementation throughout the simulation.

Main Results:

The CAD/CAM PC group demonstrated no instances of tooth fracture or decementation.
In contrast, both CPC and PFPC groups exhibited failures, including tooth fracture and decementation.
CAD/CAM PCs exhibited significantly superior performance compared to CPC and PFPC.

Conclusions:

CAD/CAM fabricated posts and cores are recommendable for post and core treatment in TCD applications.
This technology offers a promising solution to improve the longevity and success rate of TCDs by enhancing abutment tooth stability.