The force magnitude of a human bite measured at the molar intercuspidation using fiber Bragg gratings

Abe, Ilda; Milczewski, Maura Scandelari; Souza, Mauren Abreu de; Kalinowski, Hypolito José; Machuca, Oscar Fernando; Marin, Gabriela Costa; Camargo, Elisa Souza

doi:10.1590/2179-10742017v16i2808

Cited by 18 publications

(9 citation statements)

References 11 publications

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“…Although experimental data documenting live bite force values at different tooth types exist (e.g. molar region: Ringqvist, 1973a,b; Ferrario et al ., 2004; Calderon et al ., 2006; Takaki et al ., 2014; Abe et al ., 2017; the incisors: Ringqvist, 1973b; Dan et al ., 2005), they are relatively limited across all tooth types. Additionally, although bite force values are known to increase from childhood to adulthood (Bakke et al ., 1990; Kiliaridis et al ., 1993; Ingervall and Minder, 1997), it is unclear whether the models used to predict bite force in adults are applicable to juveniles and subadults and whether the patterns of bite force magnitude are consistent across all age groups.…”

Section: Introductionmentioning

confidence: 99%

The ontogeny of maximum bite force in humans

Edmonds

Glowacka

2020

Journal of Anatomy

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Ontogenetic changes in the human masticatory complex suggest that bite force, a key measure of chewing performance, increases throughout growth and development. Current published bite force values for humans exist for molar and incisal biting, but few studies measure bite forces across all tooth types, or measure bite force potentials in subjects of different ages. In the absence of live data, models of bite force such as the Constrained Lever Model (CLM), are employed to predict bite force at different bite points for adults, but it is unclear whether such a model can accurately predict bite force potentials for juveniles or subadults. This study compares theoretically derived bite forces and live bite force data, and places these within an ontogenetic context in humans. Specifically, we test whether (1) patterns of maximum bite force increase along the tooth row throughout ontogeny, (2) bite force patterns estimated using the CLM match patterns observed from live bite force data, and (3) changes in bite forces along the tooth row and throughout ontogeny are associated with concomitant changes in adductor muscle leverage. Our findings show that maximum bite forces increase throughout ontogeny and change along the tooth row, with the highest forces occurring at the posterior dentition. These findings adhere to the expectations under the CLM and validate the model’s utility in predicting bite force values throughout development. Furthermore, adductor muscle leverage values reflect this pattern, with the greatest leverage values occurring at the posterior dentition throughout ontogeny. The CLM informs our study of mammalian chewing mechanics by providing a model of how morphological changes of the masticatory apparatus during ontogeny affect bite force distribution along the tooth row. Furthermore, the decreased bite force magnitudes observed in juveniles and subadults compared with adults suggest that differences in juvenile and subadult diets may partially be due to differences in bite force production potentials.

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Section: Introductionmentioning

confidence: 99%

The ontogeny of maximum bite force in humans

Edmonds

Glowacka

2020

Journal of Anatomy

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“…12 While the most common mastication force used in the literature was 49 N. 13 The simulated chewing force in this study was set at 110 N, which is closer to the physiological chewing force in humans. 14 This was selected to ensure an aging situation that is similar to the oral environment. In addition, the dies used in this study were made from fiber-reinforced resin.…”

Section: Resultsmentioning

confidence: 99%

Survivability and fracture resistance of monolithic and multi‐yttria‐layered zirconia crowns as a function of yttria content: A mastication simulation study

Badr

Culp²,

Duqum

et al. 2022

J Esthet Restor Dent

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Objective To compare four different types of monolithic zirconia crowns in terms of survival rate and fracture resistance after thermocycling and/or thermo‐mechanical loading in a chewing simulator. Methods Partially stabilized zirconia (PSZ) crowns with fiber‐reinforced resin die assemblies (n = 80) were fabricated using: multi‐yttria‐layered 5Y‐PSZ/3Y‐PSZ, multi‐yttria‐layered 5Y‐PSZ/4Y‐PSZ, monolithic 4Y‐PSZ, and monolithic 3Y‐PSZ as control (n = 20). Half of the samples in each group were subjected to thermo‐mechanical loading under 110 N, 1.4 Hz, 1.2 million cycles with simultaneous thermocycling (10,000 cycles, 5–55°C). The other half were subjected to thermocycling alone. The samples were loaded to failure to measure their fracture resistance. The data were analyzed using by two‐way ANOVA and Tukey's HSD post‐hoc test (α = 0.05). Results All specimens survived the aging protocols. The yttria content significantly affected the fracture resistance of the crowns (p < 0.0001). The mean fracture resistance, from highest to lowest: 3Y‐PSZ, 4Y‐PSZ, followed by the two multi‐yttria‐layered systems. The mean difference between the two multi‐yttria‐layered systems were not statistically significant (p = 0.98). The mechanical loading protocol did not affect the mean fracture resistance within each group (p = 0.18). Conclusions Within each group, there was no difference in fracture resistance after thermocycling alone and thermo‐mechanical loading. However, increasing the yttria concentration at the occlusal third of the crown decreased its fracture resistance. Clinical Significance The term “monolithic zirconia” alone without specifying the actual yttria content is misleading. This term represents different materials with different mechanical properties. The yttria content has an inverse relationship with the fracture resistance of zirconia crowns. The fracture resistance of multi‐layer zirconia crowns is determined by the amount of the weaker zirconia phase at the occlusal part of the restoration rather than enforced by the stronger zirconia at the cervical part of the crown.

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“…In a different approach demonstrated in [128][129][130], FBGs are encapsulated in an acetate splint which is developed by casting a volunteer's lower dentition. The authors have used this splint to determine the human bite force between the upper and lower first molars, specifically moments before occlusion (free), occlusion and biting in maximum intercuspation.…”

Section: Bite Force Measurementmentioning

confidence: 99%

Fiber grating sensors and their recent applications in biomedical domain

Kavitha

Pant

Sood

et al. 2023

J. Opt.

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AbstractSensors play an important role in measuring various physio chemical and biological parameters. Biomedical applications of sensors include early level diagnosis of diseases, treatment technique enhancement and also monitoring the effect of medical techniques using suitable biomedical devices. The sensors which are deemed suitable for biomedical applications need to be fast, accurate, flexible, small, and most importantly, biocompatible. The inherent advantages of fiber optic sensors, such as small foot print, electrical passiveness, multiplexing capability and fast response make them the most preferred for biomedical sensing applications. Fiber optics sensors are generally used in the measurement of parameters such as temperature, strain, pressure, displacement, angle, and force. and find applications in diverse regimes like structural health monitoring, shape sensing, seismic sensing; in the bio medical domain, they have been deployed in gait analysis, pulse rate monitoring, body joint angle measurements, acquisition of respiratory parameters, cardiovascular parameters and many more. Despite being a topic of significant interest in biomedical applications, the adoptablility of optical sensors in clinical practice is not very encouraging. Hence, there is a need to address the reasons for the same, and the present review aims to highlight some critical areas. The present review paper primarily discusses the optical fibre grating techniques: their fabrication methods, the applications of these sensors in biophysical and biomechanical measurements, bio proteins and biomarker detection in body fluids. The review also discusses the bottlenecks in the clinical application of these sensors. The comparison of the performance of the optical fibre sensors with other sensing techniques is also discussed in this review paper.

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The force magnitude of a human bite measured at the molar intercuspidation using fiber Bragg gratings

Cited by 18 publications

References 11 publications

The ontogeny of maximum bite force in humans

The ontogeny of maximum bite force in humans

Survivability and fracture resistance of monolithic and multi‐yttria‐layered zirconia crowns as a function of yttria content: A mastication simulation study

Fiber grating sensors and their recent applications in biomedical domain

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