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Related Concept Videos

General Case of Eccentric Axial Loading01:12

General Case of Eccentric Axial Loading

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Unsymmetrical bending occurs when the bending moment applied to a structural member does not align with its principal axis. This misalignment leads to complex stress distributions and deflection patterns that differ from symmetrical bending, which are essential for designing structures to withstand different loading conditions.
Consider a member subjected to equal and opposite forces that are applied along a line that does not coincide with the member's neutral axis. In unsymmetrical...
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Centroid of a Body: Problem Solving01:03

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The centroid of a body is a crucial concept in engineering and physics. Finding the centroid of a body can help determine its stability, its balance point, and even its design. In this context, consider a thin wire bent in the form of a quarter circular arc. Polar coordinates are used to calculate the centroid. The wire is first divided into small differential elements of a length equal to the radius multiplied by the differential angle.
The x-coordinates and y-coordinates of each element's...
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Design of Columns under an Eccentric Load01:21

Design of Columns under an Eccentric Load

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Designing columns to withstand eccentric loads is a critical aspect of structural engineering, ensuring structures can support off-center loads without failure. This design process must account for the additional normal stresses introduced by eccentric loading, which can significantly influence a column's stress distribution and overall stability. An eccentric load applied to a column induces normal stresses that can be conceptualized as a combination of stresses due to an equivalent...
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Eccentric Loading01:16

Eccentric Loading

326
Eccentric loading is a crucial concept in the study of structural engineering and mechanics, particularly when analyzing the stability and stress distribution in columns. Unlike centric loading, where the force is applied along the centroidal axis, causing uniform compression, eccentric loading occurs when a force is applied off-center. This off-center application introduces not only direct compressive stress but also bending stress, significantly influencing the column's behavior under...
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Eccentric Axial Loading in a Plane of Symmetry01:16

Eccentric Axial Loading in a Plane of Symmetry

169
Eccentric axial loading occurs when an axial load is applied away from the centroidal axis of a structural member. This scenario is common in engineering, where structural elements may not be directly aligned due to various design or functional requirements.
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Parentral Nutrition: Centeral and Peripheral Parental Nutrition01:27

Parentral Nutrition: Centeral and Peripheral Parental Nutrition

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Parenteral Nutrition (PN) delivers essential nutrients directly into the bloodstream, bypassing the digestive system. It is commonly used for individuals with severe digestive disorders or conditions that prevent normal nutrient absorption.
PN can be administered through two primary routes:
1. Central Parenteral Nutrition (CPN):
CPN involves delivering a high concentration of nutrients through a large vein. This is typically achieved using a Peripherally Inserted Central Catheter (PICC) or,...
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Related Experiment Video

Updated: Jun 12, 2025

A Finite Element Approach for Locating the Center of Resistance of Maxillary Teeth
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Clinical decision of centric relation.

Haiyang Yu1, Zhebin Yan1, Chenyang Xie1

  • 1State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Dept. of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.

Hua Xi Kou Qiang Yi Xue Za Zhi = Huaxi Kouqiang Yixue Zazhi = West China Journal of Stomatology
|September 20, 2024
PubMed
Summary

Centric relation (CR) is debated for dentate jaws, despite its use in complete dentures. This paper reviews evidence to clarify CR

Keywords:
centric relationcomplete denturecondylemaximal intercuspal positionocclusal reconstructionorthodontic treatmenttemporomandibular disorder

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Area of Science:

  • Dentistry
  • Dental Occlusion
  • Temporomandibular Disorders

Background:

  • Centric relation (CR) was initially used for complete dentures in edentulous jaws.
  • Its application has expanded to dentate jaws, raising questions about its clinical rationale.
  • Specific doubts exist regarding CR's role in diagnosing temporomandibular disorders, occlusal reconstruction, and orthodontic treatment.

Purpose of the Study:

  • To critically evaluate the clinical application of centric relation (CR) in dentate jaws.
  • To summarize evidence-based applicable conditions for CR in various clinical scenarios.
  • To propose a decision tree to guide clinical practice regarding CR application.

Main Methods:

  • Literature review of existing evidence on centric relation (CR) applications.
  • Analysis of controversies and areas with less dispute concerning CR in dentate jaws.
  • Development of a preliminary decision-making framework for CR clinical use.

Main Results:

  • Identified clinical situations where CR application is generally accepted.
  • Highlighted areas of ongoing debate regarding the necessity and role of CR.
  • Proposed a decision tree to aid clinicians in determining appropriate CR use.

Conclusions:

  • Centric relation (CR) has specific, evidence-supported applications in dentate jaws.
  • A structured approach, like the proposed decision tree, can help clarify CR's role.
  • Further research may be needed to address remaining controversies in CR application.