keyword
MENU ▼
Read by QxMD icon Read
search

Bite force

keyword
https://www.readbyqxmd.com/read/29330953/jaw-dropping-functional-variation-in-the-digastric-muscle-in-bats
#1
Abigail A Curtis, Sharlene E Santana
Diet and feeding behavior in mammals is strongly linked to the morphology of their feeding apparatus. Cranio-muscular morphology determines how wide, forcefully, and quickly the jaw can be opened or closed, which limits the size and material properties of the foods that a mammal can eat. Most studies of feeding performance in mammals have focused on skull form and jaw muscles involved in generating bite force, but few explore how jaw abduction is related to feeding performance. In this study, we explored how the morphology of the digastric muscle, the primary jaw abducting muscle in mammals, and its jaw lever mechanics are related to diet in morphologically diverse noctilionoid bats...
February 2018: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29330952/jaw-muscle-fiber-architecture-and-leverage-in-the-hard-object-feeding-sooty-mangabey-are-not-structured-to-facilitate-relatively-large-bite-forces-compared-to-other-papionins
#2
Andrea B Taylor, Claire E Terhune, Maxx Toler, Megan Holmes, Callum F Ross, Christopher J Vinyard
Numerous studies have sought to link craniofacial morphology with behavioral ecology in primates. Extant hard-object feeders have been of particular interest because of their potential to inform our understanding about the diets of early fossil hominins. Sooty mangabeys (Cercocebus atys) are hard-object feeders that frequently generate what have been described as audibly powerful bites at wide jaw gapes to process materially stiff and hard seeds. We address the hypothesis that sooty mangabeys have features of the masticatory apparatus that facilitate this feeding behavior by comparing fiber architecture and leverage of the masseter and temporalis muscles between sooty mangabeys and three papionin primates that do not specialize on hard objects...
February 2018: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29330950/comparative-anatomy-of-bat-jaw-musculature-via-diffusible-iodine-based-contrast-enhanced-computed-tomography
#3
Sharlene E Santana
Noctilionoid bats exhibit an extraordinary array of cranial specializations that match diverse diets, including variation in jaw musculature physiological cross-sectional areas (PCSA), lever arms, and relative contribution to bite force. Although previous research in this group has linked variation in skull shape and muscle mechanics to biting performance, there are still important gaps about the anatomical underpinnings of noctilionoid dietary adaptations, including the degree of compartmentalization of the jaw musculature, and whether and how muscle attachment sites have evolved across noctilionoid species that specialize on derived diets...
February 2018: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29330948/inferring-the-diets-of-extinct-giant-lemurs-from-osteological-correlates-of-muscle-dimensions
#4
Jonathan M G Perry
The jaw adductor muscles of extinct mammals are often reconstructed to elucidate paleoecological relationships and to make broad comparisons among taxa. Muscle lever arms, bite load arms, muscle dimensions, and gape are often also reconstructed to better understand feeding. Several different approaches to these and related goals are discussed here. A protocol for reconstructing muscle dimensions and bite force using biomechanically informative skull measurements and osteological proxies of muscle dimensions is described and applied to a case study of subfossil Malagasy lemurs...
February 2018: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29330946/skull-size-and-biomechanics-are-good-estimators-of-in-vivo-bite-force-in-murid-rodents
#5
Samuel Ginot, Anthony Herrel, Julien Claude, Lionel Hautier
Rodentia is a species-rich group with diversified modes of life and diets. Although rodent skull morphology has been the focus of a voluminous literature, the functional significance of its variations has yet to be explored in live animals. Myomorphous rodents, including murids, have been suggested to represent "high-performance generalists." We measured in vivo bite force in 14 species of wild and lab-reared murid rodents of various sizes and diets to investigate potential morphofunctional differences between them...
February 2018: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29327675/the-relationship-between-oral-tori-and-bite-force
#6
Chan-Woo Jeong, Kyung-Ho Kim, Hyo-Won Jang, Hye-Sun Kim, Jong-Ki Huh
Objective The relationship between bite force and torus palatinus or mandibularis remains to be explained. The major aim of this study was to determine the correlation between bite force and oral tori. Methods The bite force of 345 patients was measured with a bite force recorder; impressions of the shape and size of the oral tori were taken on plaster models prior to orthodontic treatments. Subsequently, the relationship between oral tori and bite force was analyzed. Results The size, shape, and incidence of torus palatinus was not significantly correlated with bite force...
January 12, 2018: Cranio: the Journal of Craniomandibular Practice
https://www.readbyqxmd.com/read/29324822/biting-mechanics-and-niche-separation-in-a-specialized-clade-of-primate-seed-predators
#7
Justin A Ledogar, Theodora H Y Luk, Jonathan M G Perry, Dimitri Neaux, Stephen Wroe
We analyzed feeding biomechanics in pitheciine monkeys (Pithecia, Chiropotes, Cacajao), a clade that specializes on hard-husked unripe fruit (sclerocarpy) and resistant seeds (seed predation). We tested the hypothesis that pitheciine crania are well-suited to generate and withstand forceful canine and molar biting, with the prediction that they generate bite forces more efficiently and better resist masticatory strains than the closely-related Callicebus, which does not specialize on unripe fruits and/or seeds...
2018: PloS One
https://www.readbyqxmd.com/read/29320528/developmental-finite-element-analysis-of-cichlid-pharyngeal-jaws-quantifying-the-generation-of-a-key-innovation
#8
Tim Peterson, Gerd B Müller
Advances in imaging and modeling facilitate the calculation of biomechanical forces in biological specimens. These factors play a significant role during ontogenetic development of cichlid pharyngeal jaws, a key innovation responsible for one of the most prolific species diversifications in recent times. MicroCT imaging of radiopaque-stained vertebrate embryos were used to accurately capture the spatial relationships of the pharyngeal jaw apparatus in two cichlid species (Haplochromis elegans and Amatitlania nigrofasciata) for the purpose of creating a time series of developmental stages using finite element models, which can be used to assess the effects of biomechanical forces present in a system at multiple points of its ontogeny...
2018: PloS One
https://www.readbyqxmd.com/read/29317748/a-mosquito-inspired-strategy-to-implant-microprobes-into-the-brain
#9
Andrew J Shoffstall, Suraj Srinivasan, Mitchell Willis, Allison M Stiller, Melanie Ecker, Walter E Voit, Joseph J Pancrazio, Jeffrey R Capadona
Mosquitos are among the deadliest insects on the planet due to their ability to transmit diseases like malaria through their bite. In order to bite, a mosquito must insert a set of micro-sized needles through the skin to reach vascular structures. The mosquito uses a combination of mechanisms including an insertion guide to enable it to bite and feed off of larger animals. Here, we report on a biomimetic strategy inspired by the mosquito insertion guide to enable the implantation of intracortical microelectrodes into the brain...
January 9, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29301317/correction-of-malocclusion-by-botulinum-neurotoxin-injection-into-masticatory-muscles
#10
REVIEW
Hyun Seok, Seong-Gon Kim
Botulinum toxin (BTX) is a neurotoxin, and its injection in masticatory muscles induces muscle weakness and paralysis. This paralytic effect of BTX induces growth retardation of the maxillofacial bones, changes in dental eruption and occlusion state, and facial asymmetry. Using masticatory muscle paralysis and its effect via BTX, BTX can be used for the correction of malocclusion after orthognathic surgery and mandible fracture. The paralysis of specific masticatory muscles by BTX injection reduces the tensional force to the mandible and prevents relapse and changes in dental occlusion...
January 2, 2018: Toxins
https://www.readbyqxmd.com/read/29284912/lower-jaw-grip-strength-in-healthy-and-sick-population-measured-by-special-force-transducer
#11
Dino Dizdarevic, Tarik Masic, Edi Muslic
Introduction: One of the basic chronic diseases of the MFH domain that is treated on an outpatient basis is temporomandibular dysfunction (TMD). It represents a number of pathological conditions that lead to the dysfunction of the normal function of the stomatognatic system. Observing the etiologic factors of this condition, temporomandibular TM trauma, poor habits such as infantile type of swallowing, tongue depression, and tectogenic disturbance of the myofunctional squamous system are reported in order to reconstruct the defects of neighboring regions...
December 2017: Acta Informatica Medica: AIM
https://www.readbyqxmd.com/read/29279823/root-surface-areas-of-maxillary-permanent-teeth-in-anterior-normal-overbite-and-anterior-open-bite-assessed-using-cone-beam-computed-tomography
#12
Piyadanai Suteerapongpun, Supassara Sirabanchongkran, Tanapan Wattanachai, Patiyut Sriwilas, Dhirawat Jotikasthira
Purpose: The aim of this study was to compare the root surface areas of the maxillary permanent teeth in Thai patients exhibiting anterior normal overbite and in those exhibiting anterior open bite, using cone-beam computed tomography (CBCT). Materials and Methods: CBCT images of maxillary permanent teeth from 15 patients with anterior normal overbite and 18 patients with anterior open bite were selected. Three-dimensional tooth models were constructed using Mimics Research version 17...
December 2017: Imaging Science in Dentistry
https://www.readbyqxmd.com/read/29249880/a-comparative-evaluation-of-chewing-efficiency-masticatory-bite-force-and-patient-satisfaction-between-conventional-denture-and-implant-supported-mandibular-overdenture-an-in-vivo-study
#13
Arjun Jawahar Sharma, Rahul Nagrath, Manesh Lahori
Purpose: The purpose of this within-subject crossover clinical trial was to compare and evaluate the chewing efficiency, masticatory bite force, and patient satisfaction with conventional dentures and two implant-retained mandible overdentures after 4 weeks of usage. Method: This within-subject crossover clinical trial was carried out in the Department of Prosthodontics in K.D Dental College and Hospital. A total 15 patients were selected for the study. To report the changes in chewing efficiency by chewing 6gms of peanuts with 40 chewing strokes and comparing the particle size of the chewed material between two implant retained mandibular overdenture with that of conventional denture using micro vu excel gantry type visual measurement machine...
October 2017: Journal of Indian Prosthodontic Society
https://www.readbyqxmd.com/read/29244892/alterations-in-the-masticatory-system-in-patients-with-amyotrophic-lateral-sclerosis
#14
Nina Riera-Punet, Jordi Martinez-Gomis, Andrés Paipa, Monica Povedano, Maria Peraire
AIMS: To determine the effect of amyotrophic lateral sclerosis (ALS) on aspects of masticatory function and to assess the relationship between ALS and the prevalence of traumatic mucosal lesions caused by oral self-injury. METHODS: A total of 153 ALS patients and 23 control subjects participated in this cross-sectional study. Clinical characteristics including site of onset, medication, type of feeding, and use of noninvasive mechanical ventilation were recorded...
December 15, 2017: Journal of Oral & Facial Pain and Headache
https://www.readbyqxmd.com/read/29217358/lack-of-agreement-between-objective-and-subjective-measures-in-the-evaluation-of-masticatory-function-a-preliminary-study
#15
Aline Pedroni-Pereira, Maria Carolina Salomé Marquezin, Darlle Santos Araujo, Luciano José Pereira, Silvana Bommarito, Paula Midori Castelo
The evaluation of mastication is important to understand the masticatory behavior and diagnose feeding difficulties. The objective of this preliminary study was to verify if there is agreement between objective and subjective validated methods of chewing evaluation in a convenience sample which consisted of 32 adolescents (mean 15.5years), complete permanent dentition and free of tooth decay. The Quality of Masticatory Function Questionnaire with the Food-Mastication, Habits, Meat, Fruit and Vegetables domains was used in the subjective evaluation...
December 4, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/29207848/bite-force-recording-devices-a-review
#16
REVIEW
Tarun Prakash Verma, Kanteshwari Iranagouda Kumathalli, Vinay Jain, Rajesh Kumar
In dental research, bite force serves as a valuable parameter to evaluate the efficacy of masticatory system. A variety of devices with different design and working principle have been used to record bite force, but no single device is capable to record all the required forces. One may find it difficult to choose a device that will fulfil the purpose of recording bite force for research. So, the present review aims to report and compare the wide range of devices and will help in describing their uses for recording bite force...
September 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/29205439/influence-of-removable-prostheses-on-mastication-in-elderly-subjects-with-rheumatoid-arthritis-mastication-in-elders-with-rheumatoid-arthritis
#17
Kelly M Andrade, Bruna F M Alfenas, Renata C M Rodrigues Garcia
BACKGROUND: Rheumatoid arthritis (RA) is a prevalent disease in the elderly population, and it may affect the temporomandibular joint (TMJ) and the stomatognathic system OBJECTIVE: This study evaluated masticatory function in elderly patients with RA before and after oral rehabilitation with removable prostheses METHODS: Forty-five elders with partial or total edentulism who were using unsatisfactory removable prostheses were selected and assigned to three groups: RA with TMJ involvement, RA without TMJ involvement, and healthy controls...
December 4, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/29201257/muscle-power-during-intravenous-sedation
#18
REVIEW
Nobuyuki Matsuura
Intravenous sedation is effective to reduce fear and anxiety in dental treatment. It also has been used for behavior modification technique in dental patients with special needs. Midazolam and propofol are commonly used for intravenous sedation. Although there have been many researches on the effects of midazolam and propofol on vital function and the recovery profile, little is known about muscle power. This review discusses the effects of intravenous sedation using midazolam and propofol on both grip strength and bite force...
November 2017: Japanese Dental Science Review
https://www.readbyqxmd.com/read/29193066/broader-head-stronger-bite-in-vivo-bite-forces-in-european-eel-anguilla-anguilla
#19
J De Meyer, A Herrel, C Belpaire, G Goemans, C Ide, B De Kegel, J Christiaens, D Adriaens
This work examined three different phenotypes of the yellow-eel stage of the European eel Anguilla anguilla, broad-heads, narrow-heads and eels with an intermediate head shape. The aim was to see whether broad-headed A. anguilla, which generally consume harder, larger prey, such as crustaceans and fish, exerted greater bite force than the narrow-headed variant, which mainly consume soft, small prey such as chironomid larvae. It was found that in 99 yellow A. anguilla, in vivo bite force of broad-heads are higher compared with narrow-heads and intermediates...
November 29, 2017: Journal of Fish Biology
https://www.readbyqxmd.com/read/29180599/too-hard-to-swallow-a-secret-secondary-defence-of-an-aposematic-insect
#20
Lu-Yi Wang, Wen-San Huang, Hsin-Chieh Tang, Lung-Chun Huang, Chung-Ping Lin
Anti-predator strategies are significant components of adaptation in prey species. Aposematic prey are expected to possess effective defences that have evolved simultaneously with their warning colours. This study tested the hypothesis of the defensive function and ecological significance of the hard body in aposematic Pachyrhynchus weevils pioneered by Alfred Russel Wallace nearly 150 years ago. We used predation trials with Japalura tree lizards to assess the survivorship of 'hard' (mature) vs. 'soft' (teneral) and 'clawed' (intact) vs...
November 27, 2017: Journal of Experimental Biology
keyword
keyword
49633
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"