Jaw Relation Record
Jaw Fixation Techniques
Denture, Complete, Lower
Temporomandibular Joint Disorders
Finite Element Analysis
Bone and Bones
Midpalatal suture of osteopetrotic (op/op) mice exhibits immature fusion. (1/522)The midpalatal suture was observed histologically in both toothless osteopetrotic (op/op) and normal (control) mice. The normal mice had a mature sutural structure, which consists of a well-developed cartilage cell zone and palatal bone. In contrast, the thickness of the cartilage cell zone was substantially greater in the op/op mice than that in the controls. Moreover, the cartilage cells in the op/op mice were frequently found in the palatal bone as well as in the sutural space, exhibiting an imperfect fusion. It seems that immature fusion at the sutural interface in the op/op mice is related to a decrease in biting or masticatory force accompanied by the failure of tooth eruption in addition to an essential defect in osteoclast differentiation, which is a congenital symptom in op/op mice. (+info)
Motivation for and satisfaction with orthodontic-surgical treatment: a retrospective study of 28 patients. (2/522)Motivation for starting treatment and satisfaction with treatment results were evaluated on the basis of replies to a 14-item questionnaire and clinical examination of 28 orthognathic patients from 6 months to 2 years after treatment. The most common reasons for seeking professional help were problems in biting and chewing (68 per cent). Another major reason was dissatisfaction with facial appearance (36 per cent). Many patients also complained of temporomandibular joint symptoms (32 per cent) and headache (32 per cent). Women (8/19) were more often dissatisfied with their facial appearance than men (2/9), but the difference was not statistically significant. In agreement with earlier studies, the results of orthognathic treatment fulfilled the expectations of almost every patient. Nearly 100 per cent of the patients (27/28) were satisfied with treatment results, although 40 per cent experienced some degree of numbness in the lips and/or jaw 1 year post-operatively. The most satisfied patients were those who stated temporomandibular disorders as the main reason for seeking treatment and whose PAR-index had improved greatly. The majority of the patients experienced the orthodontic treatment as painful and as the most unpleasant part of the whole treatment, but all the patients were satisfied with the pre-treatment information they were given on orthodontics. Orthodontic-surgical therapy should be of a high professional standard technically, but the psychological aspects are equally important in the treatment protocol. The professionals should make efforts to understand the patient's motivations for and expectations of treatment. Patients should be well prepared for surgery and supported for a long time after to help them to adjust to post-surgical changes. (+info)
Mastication steal: an unusual precipitant of cerebrovascular insufficiency. (3/522)An 83-year-old man had episodic dizziness, visual disturbance, and facial and extremity weakness associated with eating. Occlusion of the ipsilateral common carotid artery and stenosis or occlusion of the major collateral sources were demonstrated. We believe this anatomic configuration, combined with increases in demand for external carotid artery blood flow necessitated by the act of chewing, resulted in a vascular steal syndrome. An extended carotid endarterectomy was performed, and there were no additional episodes. (+info)
Motor pattern specification by dual descending pathways to a lobster rhythm-generating network. (4/522)In the European lobster Homarus gammarus, rhythmic masticatory movements of the three foregut gastric mill teeth are generated by antagonistic sets of striated muscles that are driven by a neural network in the stomatogastric ganglion. In vitro, this circuit can spontaneously generate a single (type I) motor program, unlike in vivo in which gastric mill patterns with different phase relationships are found. By using paired intrasomatic recordings, all elements of the gastric mill network, which consists mainly of motoneurons, have been identified and their synaptic relationships established. The gastric mill circuit of Homarus is similar to that of other decapod crustaceans, although some differences in neuron number and synaptic connectivity were found. Moreover, specific members of the lobster network receive input from two identified interneurons, one excitatory and one inhibitory, that project from each rostral commissural ganglion. Integration of input from these projection elements is mediated by synaptic interactions within the gastric mill network itself. In arrhythmic preparations, direct phasic stimulation of the previously identified commissural gastric (CG) interneuron evokes gastric mill output similar to the type I pattern spontaneously expressed in vitro and in vivo. The newly identified gastric inhibitor interneuron makes inhibitory synapses onto a different subset of gastric mill neurons and, when activated with the CG neuron, drives gastric mill output similar to the type II pattern that is only observed in the intact animal. Thus, two distinct phenotypes of gastric mill network activity can be specified by the concerted actions of parallel input pathways and synaptic connectivity within a target central pattern generator. (+info)
Variation in ruminants' preference for tall fescue hays cut either at sundown or at sunup. (5/522)Plants vary diurnally in concentrations of nonstructural carbohydrates. If ruminants prefer forages with higher total nonstructural carbohydrates (TNC), then the preference for hays harvested within the same 24-h period may vary. An established field of tall fescue (Festuca arundinacea Schreb.) was harvested six times in the vegetative stage. Harvests were paired such that each cutting at sundown (PM) was followed by a cutting the next morning at sunup (AM). We harvested in this manner three times, resulting in six hays. The hays were field-dried, baled, and passed through a hydraulic bale processor prior to feeding. Experiments were conducted with sheep, goats, and cattle, using six animals in each case. During an adaptation phase, hays were offered alone as meals. In the experimental phase, every possible pair of hays (15 pairs) was presented for a meal. Data were analyzed by multidimensional scaling and by traditional analyses. Multidimensional scaling indicated that selection was based on a single criterion. Preference for PM hays was greater than for AM hays (P < .01) in all experiments. Increased preference was associated with increased TNC (P < .01) and in vitro true DM disappearance (P < .01) and decreased fiber concentration (P < .01; NDF, ADF, cellulose, and ADL). Mowing hay late in the day was effective in increasing forage preference. (+info)
Feeding problems in merosin deficient congenital muscular dystrophy. (6/522)Feeding difficulties were assessed in 14 children (age range 2-14 years) with merosin deficient congenital muscular dystrophy, a disease characterised by severe muscle weakness and inability to achieve independent ambulation. Twelve of the 14 children were below the 3rd centile for weight. On questioning, all parents thought their child had difficulty chewing, 12 families modified the diet, and 13 children took at least 30 minutes to complete a meal. On examination the mouth architecture was abnormal in 13 children. On videofluoroscopy only the youngest child (2 years old), had a normal study. The others all had an abnormal oral phase (breakdown and manipulation of food and transfer to oropharynx). Nine had an abnormal pharyngeal phase, with a delayed swallow reflex. Three of these also showed pooling of food in the larynx and three showed frank aspiration. These six cases all had a history of recurrent chest infections. Six of eight children who had pH monitoring also had gastro-oesophageal reflux. As a result of the study five children had a gastrostomy, which stopped the chest infections and improved weight gain. This study shows that children with merosin deficient congenital muscular dystrophy have difficulties at all stages of feeding that progress with age. Appropriate intervention can improve weight gain and reduce chest infections. The severity of the problem has not been previously appreciated in this disease, and the study shows the importance of considering the nutritional status in any child with a primary muscle disorder. (+info)
Cheek and tongue pressures in the molar areas and the atmospheric pressure in the palatal vault in young adults. (7/522)The pressures acting on the maxillary and mandibular posterior teeth from the tongue and cheeks were measured in 24 adults aged 22-29 years. In addition, the pressure in the palatal vault was recorded. The pressure at two maxillary (buccal and lingual) and two mandibular (buccal and lingual) measuring points, and in the palatal vault was recorded simultaneously. Repeated recordings of the pressures at rest, and during chewing and swallowing were made. The pressures at rest were of similar magnitude (about 2 g/cm2) at the buccal and lingual sides of the mandibular posterior teeth. The median resting pressure at the maxillary posterior teeth was 2.7 g/cm2 on the buccal side and 1.0 g/cm2 on the lingual side. The difference in the maxilla was significant, but not in the mandible. It was concluded that the equilibrium of tooth position is maintained by the pressure from the cheeks and the tongue. During chewing and swallowing the pressures on the lingual side of the teeth were greater than those on the buccal side. At rest about half of the subjects had a negative pressure at the palatal vault, but no correlations between the resting pressure at the palatal vault and the resting pressures on the teeth were found. (+info)
Features of cortically evoked swallowing in the awake primate (Macaca fascicularis). (8/522)Although the cerebral cortex has been implicated in the control of swallowing, the output organization of the cortical swallowing representation, and features of cortically evoked swallowing, remain unclear. The present study defined the output features of the primate "cortical swallowing representation" with intracortical microstimulation (ICMS) applied within the lateral sensorimotor cortex. In four hemispheres of two awake monkeys, microelectrode penetrations were made at 5 mm deep to the cortical surface corresponding to both the white matter underlying the CMA and the frontal operculum; EMG patterns of swallows elicited from these four cortical regions showed some statistically significant differences. Whereas swallowing ONLY was evoked at some sites, particularly within the deep cortical area, swallowing was more frequently evoked together with other orofacial responses including rhythmic jaw movements. Increasing ICMS intensity increased the magnitude, and decreased the latency, of the swallow-related EMG burst in the genioglossus muscle at some sites. These findings suggest that a number of distinct cortical foci may participate in the initiation and modulation of the swallowing synergy as well as in integrating the swallow within the masticatory sequence. (+info)
Bite force refers to the amount of force that a person can generate when they bite down with their teeth. It is typically measured in pounds or newtons of force. In the medical field, bite force is often used to assess the strength and function of a person's bite, which can be important in cases of dental injuries, TMJ disorders, and other oral health conditions. Bite force can also be used to evaluate the effectiveness of dental restorations, such as crowns and bridges, and to assess the risk of dental problems, such as tooth decay and gum disease.
Deglutition is the medical term used to describe the process of swallowing. It involves the coordinated movement of muscles in the mouth, pharynx, and esophagus to move food or liquid from the mouth to the stomach. The process of deglutition can be divided into three stages: oral phase, pharyngeal phase, and esophageal phase. During the oral phase, the tongue and other muscles in the mouth work together to break down food into smaller pieces and mix it with saliva. The saliva contains enzymes that help to break down carbohydrates and lubricate the food, making it easier to swallow. During the pharyngeal phase, the food or liquid is moved from the mouth to the pharynx, which is the tube that connects the mouth to the esophagus and the nose. The epiglottis, a flap of tissue at the base of the tongue, closes over the trachea (windpipe) to prevent food or liquid from entering the lungs. During the esophageal phase, the muscles in the esophagus contract and relax in a coordinated manner to move the food or liquid down the esophagus and into the stomach. This process is known as peristalsis. Any problems with the deglutition process can lead to difficulties swallowing, which is known as dysphagia. This can be caused by a variety of factors, including neurological disorders, structural abnormalities in the mouth or throat, or certain medications.
Cranial sutures are the fibrous joints that connect the bones of the skull. There are 17 pairs of cranial sutures in the human skull, which are responsible for allowing the skull to grow and change shape during development. The sutures are typically divided into two types: primary sutures and secondary sutures. Primary sutures are the cranial sutures that are present at birth and are responsible for allowing the skull to grow and change shape during development. Examples of primary sutures include the metopic suture, which joins the frontal and nasal bones, and the lambdoid suture, which joins the occipital and parietal bones. Secondary sutures, on the other hand, are cranial sutures that are formed after birth and are responsible for allowing the skull to adapt to changes in the brain. Examples of secondary sutures include the coronal suture, which joins the frontal and parietal bones, and the sagittal suture, which joins the right and left parietal bones. Cranial sutures are important for protecting the brain and allowing it to grow and develop properly. Any abnormalities or disorders of the cranial sutures can have serious consequences for brain function and development.
Temporomandibular Joint Disorders (TMDs) are a group of conditions that affect the temporomandibular joint (TMJ), which is the joint that connects the lower jaw (mandible) to the skull. TMDs can cause pain, stiffness, and limited movement in the jaw, as well as other symptoms such as headaches, earaches, and neck pain. TMDs can be caused by a variety of factors, including injury, arthritis, teeth grinding or clenching (bruxism), and stress. They can also be related to other medical conditions, such as fibromyalgia or temporomandibular joint ankylosis. Treatment for TMDs depends on the underlying cause and the severity of symptoms. It may include medications, physical therapy, bite guards or splints, and in some cases, surgery. It is important to consult with a healthcare professional, such as an oral and maxillofacial surgeon or a dentist, if you are experiencing symptoms of TMDs.
In the medical field, dental abutments refer to the part of a dental implant that is visible in the mouth and serves as the connection between the implant and the dental prosthesis (such as a crown or bridge). Dental abutments are typically made of materials such as titanium or zirconia and are designed to be biocompatible with the surrounding tissue and bone. They are usually screw-shaped and are placed into the implant site after the implant has healed and integrated with the surrounding bone. The dental abutment serves as the anchor for the dental prosthesis, providing stability and support for the artificial tooth or teeth. It also helps to distribute the forces of biting and chewing evenly across the implant and surrounding bone, reducing the risk of implant failure. Overall, dental abutments play a critical role in the success of dental implants and are an important component of modern dental prosthetics.
Deglutition disorders refer to difficulties or problems with swallowing. This can include difficulty starting or stopping the swallowing process, difficulty swallowing solid or liquid foods, or difficulty feeling full after eating. Deglutition disorders can be caused by a variety of factors, including neurological disorders, structural abnormalities of the esophagus or mouth, and certain medications. Treatment for deglutition disorders depends on the underlying cause and may include medications, dietary changes, physical therapy, or surgery.
Biomechanical phenomena refer to the study of the mechanical properties and behavior of living organisms, particularly in relation to movement and function. In the medical field, biomechanical phenomena are often studied in the context of musculoskeletal disorders, sports injuries, and rehabilitation. This involves analyzing the forces and movements involved in various activities, such as walking, running, or lifting, and how they affect the body's tissues and structures. Biomechanical engineers and researchers use a variety of techniques, including computer simulations, imaging technologies, and physical measurements, to study biomechanical phenomena and develop new treatments and interventions for a range of medical conditions.
In the medical field, the term "animal feed" typically refers to the food and other substances that are provided to animals for their nutrition and health. This can include a variety of different types of feed, such as grains, hay, silage, concentrates, and supplements, depending on the type of animal and its specific nutritional needs. Animal feed is an important aspect of animal husbandry and veterinary medicine, as it can have a significant impact on the health and productivity of animals. Proper nutrition is essential for maintaining optimal health and preventing a range of health problems, such as malnutrition, obesity, and digestive disorders. In addition to providing essential nutrients, animal feed can also be used to prevent or treat certain health conditions. For example, feed supplements containing vitamins and minerals can help to prevent deficiencies, while feed additives containing probiotics or prebiotics can help to promote gut health and prevent digestive problems. Overall, animal feed plays a critical role in the health and well-being of animals, and is an important consideration for veterinarians, farmers, and other animal care professionals.
In the medical field, "bone and bones" typically refers to the skeletal system, which is made up of bones, cartilage, ligaments, tendons, and other connective tissues. The skeletal system provides support and structure to the body, protects vital organs, and allows for movement through the use of muscles. Bones are the main component of the skeletal system and are responsible for providing support and protection to the body. There are 206 bones in the human body, which are classified into four types: long bones, short bones, flat bones, and irregular bones. Long bones, such as the femur and humerus, are cylindrical in shape and are found in the arms and legs. Short bones, such as the carpals and tarsals, are cube-shaped and are found in the wrists and ankles. Flat bones, such as the skull and ribs, are thin and flat and provide protection to vital organs. Irregular bones, such as the vertebrae and pelvis, have complex shapes that allow for specific functions. Overall, the bone and bones of the skeletal system play a crucial role in maintaining the health and function of the human body.
In the medical field, computer simulation refers to the use of computer models and algorithms to simulate the behavior of biological systems, medical devices, or clinical procedures. These simulations can be used to study and predict the effects of various medical interventions, such as drug treatments or surgical procedures, on the human body. Computer simulations in medicine can be used for a variety of purposes, including: 1. Training and education: Medical students and professionals can use computer simulations to practice and refine their skills in a safe and controlled environment. 2. Research and development: Researchers can use computer simulations to study the underlying mechanisms of diseases and develop new treatments. 3. Clinical decision-making: Physicians can use computer simulations to predict the outcomes of different treatment options and make more informed decisions about patient care. 4. Device design and testing: Engineers can use computer simulations to design and test medical devices, such as prosthetics or surgical instruments, before they are used in patients. Overall, computer simulations are a powerful tool in the medical field that can help improve patient outcomes, reduce costs, and advance medical knowledge.
Muscles of mastication
Index of oral health and dental articles
Don Gregorio Antón
Harry Campbell (physician)
Human digestive system
Lateral pterygoid muscle
Primary enamel cuticle
Forest Mastication Archives • Sage Environmental Group
MUSCLE OF MASTICATION mastication, muscles, facial muscle
The relationship between mastication and Alzheimer's disease
Effects of Implant-Based Prostheses on Mastication... - BV FAPESP
TS - HUMAN MASTICATION - The Gallery Of Guttural Perversion | BRUTAL MIND
How To Restore Proper Mastication in Seniors - What's Cooking with Doc
Marine Mammal Science: MMS 115: Evolutionary History and Marine Mammal Mastication
Mastications Archives - Page 4 of 4 - Wild Dingo
Muscles of mastication | Jaws | Dental Anatomy | Anatomy.app | Learn anatomy | 3D models, articles, and quizzes
Roles of IL-6 in mastication in mice and effects of training and food hardness<...
Article - Billing and Coding: Vitamin D Assay Testing (A57484)
Mind your teeth-The relationship between mastication and cognition. | Gerodontology;36(1): 2-7, 2019 Mar. | MEDLINE | BVS...
SciELO - Brazil - Influência da hipermobilidade articular generalizada sobre a articulação teoromandibular,...
Development of 3D CAD/FEM Analysis System for Natural Teeth and Jaw Bone Constructed from X-Ray CT Images
Static Reconstruction for Facial Nerve Paralysis: Overview, Indications, Clinical Presentation
How Does Chewing Gum Affect Your Digestive System? | HealthNews
Frontiers | Decoupling Tooth Loss from the Evolution of Baleen in Whales
Guimarães AS - Search Results - PubMed
Hemifacial Spasm (12.10.2012)
Burning Mouth Syndrome: Practice Essentials, Anatomy and Physiology, Pathophysiology
Beauty and the Beast - David Bollt
Roland S Johansson
Tongue Definition & Meaning | Dictionary.com
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ICDS 2022 Program
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- The muscles of mastication are a group of muscles around the temporomandibular joint . (anatomy.app)
- to evaluate temporomandibular joint, mastication and deglutition in asymptomatic women with and without generalized joint hypermobility and the association between these variables. (scielo.br)
- The temporomandibular joint was examined by Research Diagnostic Criteria for Temporomandibular Disorders instrument, and mastication and deglutition functions were assessed through a myofunctional orofacial assessment. (scielo.br)
- Aesthetics, mastication function and speech are impaired in patients with lost teeth. (who.int)
- Anterior teeth are valuable for aesthetics, speech and mastication. (bvsalud.org)
- These are the most visible teeth in the extraction of obstructing structure for oral cavity and are vitally important for speech spontaneous realignment, if the condition is and aesthetics, as well as mastication.1, 2 The detected early. (bvsalud.org)
Relationship between mastication3
- Mind your teeth-The relationship between mastication and cognition. (bvsalud.org)
- This article explores the multifactorial relationship between mastication and cognition , with a focus on dementia . (bvsalud.org)
- The relationship between mastication and cognition has also been researched in human studies, but a cause-effect relationship has not been proven. (bvsalud.org)
- By gently encouraging and reminding seniors to take their time and chew their food thoroughly, caregivers can help them maintain optimal oral health and prevent potential health problems associated with poor mastication. (whatscookingwithdoc.com)
- Ensuring that food is cut into smaller pieces that are easy to chew is important for restoring proper mastication , or the act of chewing, in individuals of all ages. (whatscookingwithdoc.com)
- Mastication, or chewing, is increased in those who chew gum. (healthnews.com)
- The goals of static suspension procedures are to protect the cornea by restoring eyelid competence, to enhance mastication and speech production through commissure elevation, and to achieve cosmetic improvement by restoring facial symmetry at rest. (medscape.com)
- The aim of this study was to make a literature review about the mastication importance and its relation to Alzheimer's disease. (bvsalud.org)
- Over the past decade, Forest mastication methods have dramatically reduced wildfire hazards and greatly improved forest health. (sageenvironmentalgroup.com)
- Mastication, or chewing, is an important part of digestion and nutrition for seniors. (whatscookingwithdoc.com)
- It is difficult for ricin to be released from ingested castor beans, because ricin release requires mastication, and the degree of mastication is likely to be important in determining the extent of poisoning. (cdc.gov)
- Mastication can assist in removing some trees in the early stages, to allow the remaining trees to grow faster, stronger and larger. (sageenvironmentalgroup.com)
- Effects of Implant-Based Prostheses on Mastication. (fapesp.br)
- Proper mastication contributes to better digestion by breaking down food into smaller pieces that are easier to swallow and process. (whatscookingwithdoc.com)
- Brutal Mastication Biography, Discography. (metalland.net)
Swallowing and digestion1
- 7. Saliva and gastrointestinal functions of taste, mastication, swallowing and digestion. (nih.gov)
- The ensuing compromised mastication performance has been associated with potential effects on gastrointestinal health (4). (who.int)
- Muscle cramps during mastication occurred in 57% of the patients. (nih.gov)
- As for EMG, the signal is recorded by attaching electrodes on effected muscle area that have relationship with human mastication or biting motion. (scirp.org)
- Since the digastric muscle relates to mastication, its functions may change markedly before and after weaning, but many details remain unknown. (bioone.org)
- This suggests that, in mice, the anterior belly of the digastric muscle needs to move rapidly anteroposteriorly for mastication, compared with the posterior belly. (bioone.org)
- Links between mastication and nutrition should be investigated further in children . (bvsalud.org)
- 2. Salivary functions in mastication, taste and textural perception, swallowing and initial digestion. (nih.gov)
- These formulations are highly effective in shortening mastication times, reducing viscosity, and lowering costs during rubber processing. (nih.gov)
- The major chemical changes during the processing of rubber occur with the breakdown in mastication and during vulcanization of the molded tire. (nih.gov)