Development of a novel intraoral measurement device to determine the biomechanical characteristics of the human periodontal ligament

Drolshagen, M.; Keilig, Ludger; Hasan, Istabrak; Reimann, Susanne; Deschner, James; Brinkmann, Kai-Thomas; Krause, Rolf; Favino, Marco; Bourauel, Christoph

doi:10.1016/j.jbiomech.2011.05.025

Cited by 21 publications

(26 citation statements)

References 29 publications

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“…With this layer, the artificial tooth mobility under a force of 5 N has been reported to be 100 ± 30 μm in the horizontal direction and 65 ± 21 μm in the vertical direction (37). These values are similar to the physiological tooth mobility described in the literature (38). Nevertheless, owing to its complex structure (collagen fibre network, blood vessels, nerves, fluids, etc.)…”

Section: Discussionsupporting

confidence: 89%

Effect of veneering technique on the fracture resistance of zirconia fixed dental prostheses

Chaar

Witkowski

Strub

et al. 2012

J of Oral Rehabilitation

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To compare the fracture resistance of zirconia 3-unit posterior fixed dental prostheses (FDPs) frameworks veneered with different veneering materials and techniques before and after artificial ageing. Forty-eight zirconia 3-unit FDPs, representing a missing first molar, were adhesively cemented on human teeth. The zirconia frameworks were randomly distributed according to the veneering materials and techniques into three groups, each containing 16 samples: group LV (layering technique/Vintage ZR), group LZ (layering technique/ZIROX) and group PP (CAD/CAM and press-over techniques/PressXZr). Half of each group was artificially aged through dynamic loading and thermocycling to simulate 5 years of clinical service. Afterwards, all specimens were tested for fracture resistance using compressive load. An analysis of variance (anova) was used to assess the effect of veneering ceramic and artificial ageing on fracture resistance (P < 0·05). Except for one minor cohesive chipping in group LV1, all specimens survived artificial ageing. The mean fracture resistance values (in Newton) of different non-aged (± s.d.)/aged (± s.d.) groups were as follows: LV0 2034 (± 401)/LV1 1625 (± 291); LZ0 2373 (± 718)/LZ1 1769 (± 136); and PP0 1959 (± 453)/PP1 1897 (± 329). Artificial ageing significantly reduced the fracture resistance in groups veneered with the layering technique (P < 0·05), whereas no significant effect was found in specimens veneered with the CAD/CAM and press-over techniques. All tested systems have the potential to withstand occlusal forces applied in the posterior region. The combination of the CAD/CAM and press-over techniques for the veneering process improved the overall stability after artificial ageing, relative to the layering technique.

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Section: Discussionsupporting

confidence: 89%

Effect of veneering technique on the fracture resistance of zirconia fixed dental prostheses

Chaar

Witkowski

Strub

et al. 2012

J of Oral Rehabilitation

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“…Lee et al (23) and Kojima and Fukui (24) found that lowering the attachment level of teeth significantly decreased natural frequencies, and their findings are supported by the present results. In addition, the elastic modulus and viscosity coefficient were assessed because periodontal tissue has elastic and viscous properties (8)(9)(10). These mechanical parameters significantly increased with increasing depths in all groups, similar to the results for the resonant frequency.…”

Section: Discussionsupporting

confidence: 63%

“…Periodontal tissue, particularly the periodontal liga- 4,5) , and Bunnai Ogiso 4,5) ment, has elastic and viscous properties (8)(9)(10). These properties present challenges during analysis of periodontal tissue, since Hooke's law of elasticity cannot be applied to the behavior of periodontal tissue (11).…”

Section: Introductionmentioning

confidence: 99%

Use of a laser displacement sensor with a non-contact electromagnetic vibration device for assessment of simulated periodontal tissue conditions

et al. 2016

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A non-contact electromagnetic vibration device (NEVD) was previously developed to monitor the condition of periodontal tissues by assessing mechanical parameters. This system requires placement of an accelerometer on the target tooth, to detect vibration. Using experimental tooth models, we evaluated the performance of an NEVD system with a laser displacement sensor (LDS), which does not need an accelerometer. Simulated teeth (polyacetal rods) were submerged at various depths in simulated bone (polyurethane or polyurethane foam) containing simulated periodontal ligament (tissue conditioner). Then, mechanical parameters (resonant frequency, elastic modulus, and viscosity coefficient) were assessed using the NEVD with the following detection methods: Group 1, measurement with an accelerometer; Group 2, measurement with an LDS in the presence of the accelerometer; and Group 3, measurement with an LDS in the absence of the accelerometer. Statistical analyses were performed using nonparametric methods (n = 5) (P < 0.05). The three mechanical parameters significantly increased with increasing depth. In addition, the mechanical parameters significantly differed between the polyurethane and polyurethane foam models. Although Groups 1 and 2 did not significantly differ, most all mechanical parameters in Group 3 were significantly larger and more distinguishable than those in Groups 1 and 2. The LDS was more accurate in measuring mechanical parameters and better able to differentiate periodontal tissue conditions. (J Oral Sci 58, [93][94][95][96][97][98][99] 2016)

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“…The infection can begin with an inflammatory response due to a repetitive traumatic load. Thus, interest in studying the role of the mechanical response of the PDL in periodontitis diseases has increased in recent years . The PDL plays two roles under traumatic loading conditions.…”

Section: Discussionmentioning

confidence: 99%

“…The gum is the main responsible for periodontal diseases produced by bacterial action, although the gum is less relevant from a biomechanical point of view . In contrast, dentin, bone, and the PDL are the main agents for load transmission, and some of the most common periodontal diseases are related to an abnormal mechanical role of these elements …”

Section: Introductionmentioning

confidence: 99%

A porous fibrous hyperelastic damage model for human periodontal ligament: Application of a microcomputerized tomography finite element model

Ortún‐Terrazas

Cegoñino

Santana‐Penín

et al. 2019

Numer Methods Biomed Eng

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The periodontal ligament (PDL) is a soft biological tissue that connects the tooth with the trabecular bone of the mandible. It plays a key role in load transmission and is primarily responsible for bone resorption and most common periodontal diseases. Although several numerical studies have analysed the biomechanical response of the PDL, most did not consider its porous fibrous structure, and only a few analysed damage to the PDL. This study presents an innovative numerical formulation of a porous fibrous hyperelastic damage material model for the PDL. The model considers two separate softening phenomena: fibre alignment during loading and fibre rupture. The parameters for the material model characterization were fitted using experimental data from the literature. Furthermore, the experimental tests used for characterization were computationally modelled to verify the material parameters. A finite element model of a portion of a human mandible, obtained by microcomputerized tomography, was developed, and the proposed constitutive model was implemented for the PDL. Our results confirm that damage to the PDL may occur mainly because of overpressure of the interstitial fluid, while large forces must be applied to damage the PDL fibrous network. Moreover, this study clarifies some aspects of the relationship between PDL damage and the bone remodelling process.

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Development of a novel intraoral measurement device to determine the biomechanical characteristics of the human periodontal ligament

Cited by 21 publications

References 29 publications

Effect of veneering technique on the fracture resistance of zirconia fixed dental prostheses

Effect of veneering technique on the fracture resistance of zirconia fixed dental prostheses

Use of a laser displacement sensor with a non-contact electromagnetic vibration device for assessment of simulated periodontal tissue conditions

A porous fibrous hyperelastic damage model for human periodontal ligament: Application of a microcomputerized tomography finite element model

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