Objective: The study objective was to investigate four common occlusal modes by using the finite element (FE) method and to conduct a biomechanical analysis of the periodontal ligament (PDL) and surrounding bone when orthodontic force is applied.
Materials And Methods: A complete mandibular FE model including teeth and the PDL was established on the basis of cone-beam computed tomography images of an artificial mandible. In the FE model, the left and right mandibular first premolars were not modeled because both canines required distal movement. In addition, four occlusal modes were simulated: incisal clench (INC), intercuspal position (ICP), right unilateral molar clench (RMOL), and right group function (RGF). The effects of these four occlusal modes on the von Mises stress and strain of the canine PDLs and bone were analyzed.
Results: Occlusal mode strongly influenced the distribution and value of von Mises strain in the canine PDLs. The maximum von Mises strain values on the canine PDLs were 0.396, 1.811, 0.398, and 1.121 for INC, ICP, RMOL, and RGF, respectively. The four occlusal modes had smaller effects on strain distribution in the cortical bone, cancellous bone, and miniscrews.
Conclusion: Occlusal mode strongly influenced von Mises strain on the canine PDLs when orthodontic force was applied.
Clinical Relevance: When an FE model is used to analyze the biomechanical behavior of orthodontic treatments, the effect of muscle forces caused by occlusion must be considered.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/s00784-021-03868-x | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Impact of physiological and non-physiological loading scenarios and crown material on periimplant bone stress distribution: A 3D finite element study.
J Mech Behav Biomed Mater
January 2025
Department of Engineering and Geology, University "G. D'Annunzio" of Chieti-Pescara, Viale Pindaro, Pescara, 65127, Italy. Electronic address:
This study numerically investigates the impact of different loading modes on the biomechanical response of an osseointegrated dental implant. While finite element modeling is commonly employed to investigate the mechanical behavior of dental implants, several models lack physiological accuracy in their loading conditions, omitting occlusal contact points that influence stress distribution in periimplant bone. Using 3D finite element modeling and analysis, stress distributions at the bone-implant interface are evaluated under both physiological loading, incorporating natural occlusal contact points, and non-physiological loading conditions, with a focus on load transmission mechanisms and the potential risk of bone overloading.
View Article and Find Full Text PDFExperimental investigation and finite element analysis on the durability of root-filled teeth treated with multisonic irrigation.
Dent Mater
January 2025
Minnesota Dental Research Center for Biomaterials and Biomechanics, School of Dentistry, University of Minnesota, Minneapolis, MN, USA. Electronic address:
Objective: This study compared the fracture load, stress distribution, and survival probability under cyclic loading of extensively restored teeth treated with multisonic irrigation with those treated with conventional instrumentation, with or without a post.
Methods: Mesial-occlusal-distal cavities were prepared in 30 human mandibular premolars. The teeth were randomly divided into 3 groups of 10 based on the endodontic and restorative procedures: (1) Root canal treatment (RCT) followed by resin composite restoration (control group), (2) RCT followed by a glass fiber post restoration (conventional group), and (3) minimal instrumentation plus multisonic irrigation followed by resin composite restoration (GW group).
Comparative evaluation of desensitizing agents on shear bond strength of zirconia to dentin.
BMC Oral Health
November 2024
Ege University Faculty of Dentistry Department of Prosthodontics, İzmir, Turkey.
Background: The purpose of the study is to evaluate the effect of 7 different desensitizing agents on the shear bond strength (SBS) of zirconia restorations to dentin with a self-adhesive resin cement and determine the failure modes.
Methods: Eighty molars' occlusal surfaces were ground to expose dentin and were randomly divided into 8 groups (n = 10): 1. Gluma (HEMA/Glutaraldehyde) 2.
Fracture strength of direct occlusal veneers with different short fiber-reinforced composite cores and veneering materials: an in-vitro study.
Clin Oral Investig
November 2024
Department of Conservative Dentistry, School of Dentistry, New Giza University, Giza, Egypt.
Article Synopsis
- The study aimed to assess how different viscosities of short fiber-reinforced composite resin (SFRC) cores and veneering composite resins affect the fracture strength of direct occlusal veneers.
- A total of 48 resin dies mimicking a maxillary premolar were created, tested across three core material groups, and further divided by two types of veneering materials.
- Results showed that having an SFRC core boosted fracture strength, with no significant difference between high and low viscosity cores, and injectable composite resin outperformed packable composite resin in terms of strength.
Assessment of Nanosilver Fluoride Application on the Microtensile Bond Strength of Glass Ionomer Cement and Resin-modified Glass Ionomer Cement on Primary Carious Dentin: An Study.
Int J Clin Pediatr Dent
May 2024
Department of Pedodontics and Preventive Dentistry, MR Ambedkar Dental College and Hospital (MRADCH), Bengaluru, Karnataka, India.
Background And Objectives: Nanosilver sodium fluoride (NSF) has recently gained popularity in dentistry as an alternative to silver diamine fluoride (SDF) due to its drawbacks of staining the tooth black and possibly causing soft tissue injury, which has been eliminated in NSF due to the nanoparticle size of silver. This study aims to assess the microtensile bond strength of glass ionomer cement (GIC) and resin-modified glass ionomer cement (RMGIC) with pretreatment of NSF on extracted primary carious teeth.
Materials And Methods: Teeth were stored in 10% formalin.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!