Biomechanical Modelling for Tooth Survival Studies: Mechanical Properties, Loads and Boundary Conditions—A Narrative Review

Dorado, Saul; Arias, Ana; Jiménez-Octavio, Jesús R.

doi:10.3390/ma15217852

Cited by 14 publications

(8 citation statements)

References 221 publications

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“…However, for patients who exhibit bruxism, this timeline may reduce to just 5 months. Therefore, it is essential for clinicians to monitor dental implants and perform regular screw tightening, as emphasized in references ( Robinson et al, 2019 ; Dorado et al, 2022 ).…”

Section: Discussionmentioning

confidence: 99%

Silver coating on dental implant-abutment connection screws as potential strategy to prevent loosening and minimizing bacteria adhesion

Velasco-Ortega,

Jiménez-Guerra,

Ortiz-Garcia

et al. 2024

Front. Bioeng. Biotechnol.

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Introduction: One of the main problems for the long-term behavior of dental implants are loosening of the implant-abutment connection screws and bacterial infiltration. The aim of this work is to increase the screw fixation by silver coating, providing superior mechanical retaining and antibacterial effect.Methods: Eighty dental implants with their abutments and screws have been studied. Twenty screws were not coated and were used as a control while the rest of screws were silver coated by sputtering, with three different thickness: 10, 20 and 40 μm and 20 screws per each thickness. Coating morphology and thickness were determined by scanning electron microscopy using image analysis systems. The screws were tightened for each of the thicknesses and the control with two torques 15 Ncm and 20 Ncm and tested under mechanical fatigue simulating oral stresses up to a maximum of 500,000 cycles. The remaining torques at different cycles were determined with a high-sensitivity torquemeter. Cell viability assays were performed with SaOs-2 osteoblasts and microbiological studies were performed against Streptococcus gordonii and Enterococcus faecalis bacteria strains, determining their metabolic activity and viability using live/dead staining.Results: It was observed a decrease in torque as cycles increase. For a preload of 15 Ncm at 100,000 cycles, the loosening was complete and, for 20 Ncm at 500,000 cycles, 85% of torque was lost. The silver coatings retained the torque, especially the one with a thickness of 40 μm, retaining 90% of the initial torque at 500,000 cycles. It was observed that osteoblastic viability values did not reach 70%, which could indicate a slight cytotoxic effect in contact with cells or tissues; however, the screw should not be in direct contact with tissue or living cells. Silver coating induced a significant reduction of the bacteria metabolic activity for Streptococcus gordonii and Enterococcus faecalis, around 90% and 85% respectively.Discussion: Therefore, this coating may be of interest to prevent loosening of implant systems with a worthy antibacterial response.

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Section: Discussionmentioning

confidence: 99%

Silver coating on dental implant-abutment connection screws as potential strategy to prevent loosening and minimizing bacteria adhesion

Velasco-Ortega,

Jiménez-Guerra,

Ortiz-Garcia

et al. 2024

Front. Bioeng. Biotechnol.

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“…FEA model construction is the basis of FEA, and good models simulate real situations better and provide more accurate data [ 29 ]. In numerous previous FEA studies, mandibular second premolars were selected for analysis because of their relatively simple anatomical structure [ 30 – 32 ].…”

Section: Discussionmentioning

confidence: 99%

The effect of periapical bone defects on stress distribution in teeth with periapical periodontitis: a finite element analysis

Chen,

Ye,

Hong

et al. 2023

BMC Oral Health

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Background Apical periodontitis directly affects the stress state of the affected tooth owing to the destruction of the periapical bone. Understanding the mechanical of periapical bone defects/tooth is clinically meaningful. In this study, we evaluate the effect of periapical bone defects on the stress distribution in teeth with periapical periodontitis using finite element analysis. Methods Finite element models of normal mandibular second premolars and those with periapical bone defects (spherical defects with diameters of 5, 10, 15, and 20 mm) were created using a digital model design software. The edges of the mandible were fixed and the masticatory cycle was simplified as oblique loading (a 400 N force loaded obliquely at 45° to the long axis of the tooth body) to simulate the tooth stress state in occlusion and analyze the von Mises stress distribution and tooth displacement distribution in each model. Results Overall analysis of the models: Compared to that in the normal model, the maximum von Mises stresses in all the different periapical bone defect size models were slightly lower. In contrast, the maximum tooth displacement in the periapical bone defect model increased as the size of the periapical bone defect increased (2.11–120.1% of increase). Internal analysis of tooth: As the size of the periapical bone defect increased, the maximum von Mises stress in the coronal cervix of the tooth gradually increased (2.23–37.22% of increase). while the von Mises stress in the root apical region of the tooth showed a decreasing trend (41.48–99.70% of decrease). The maximum tooth displacement in all parts of the tooth showed an increasing trend as the size of the periapical bone defect increased. Conclusions The presence of periapical bone defects was found to significantly affect the biomechanical response of the tooth, the effects of which became more pronounced as the size of the bone defect increased.

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“…Both trabecular and cortical bones of the maxilla and mandible exhibit anisotropy, meaning their mechanical characteristics differ based on direction. Furthermore, the mandible demonstrates superior physical attributes to the maxilla regarding both the outer and inner layers of bone, and the mechanical properties of these two layers also vary ( Dorado et al, 2022 ).…”

Section: Performance Demands and Current Methods For Bone Reconstructionmentioning

confidence: 99%

Research progress of 3D printed poly (ether ether ketone) in the reconstruction of craniomaxillofacial bone defects

Su,

Qiao,

Xiao

et al. 2023

Front. Bioeng. Biotechnol.

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The clinical challenge of bone defects in the craniomaxillofacial region, which can lead to significant physiological dysfunction and psychological distress, persists due to the complex and unique anatomy of craniomaxillofacial bones. These critical-sized defects require the use of bone grafts or substitutes for effective reconstruction. However, current biomaterials and methods have specific limitations in meeting the clinical demands for structural reinforcement, mechanical support, exceptional biological performance, and aesthetically pleasing reconstruction of the facial structure. These drawbacks have led to a growing need for novel materials and technologies. The growing development of 3D printing can offer significant advantages to address these issues, as demonstrated by the fabrication of patient-specific bioactive constructs with controlled structural design for complex bone defects in medical applications using this technology. Poly (ether ether ketone) (PEEK), among a number of materials used, is gaining recognition as a feasible substitute for a customized structure that closely resembles natural bone. It has proven to be an excellent, conformable, and 3D-printable material with the potential to replace traditional autografts and titanium implants. However, its biological inertness poses certain limitations. Therefore, this review summarizes the distinctive features of craniomaxillofacial bones and current methods for bone reconstruction, and then focuses on the increasingly applied 3D printed PEEK constructs in this field and an update on the advanced modifications for improved mechanical properties, biological performance, and antibacterial capacity. Exploring the potential of 3D printed PEEK is expected to lead to more cost-effective, biocompatible, and personalized treatment of craniomaxillofacial bone defects in clinical applications.

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Biomechanical Modelling for Tooth Survival Studies: Mechanical Properties, Loads and Boundary Conditions—A Narrative Review

Cited by 14 publications

References 221 publications

Silver coating on dental implant-abutment connection screws as potential strategy to prevent loosening and minimizing bacteria adhesion

Silver coating on dental implant-abutment connection screws as potential strategy to prevent loosening and minimizing bacteria adhesion

The effect of periapical bone defects on stress distribution in teeth with periapical periodontitis: a finite element analysis

Research progress of 3D printed poly (ether ether ketone) in the reconstruction of craniomaxillofacial bone defects

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