Instrumented splint for the diagnosis of bruxism

Bruxism is a health problem consisting in grinding or tightly clenching the upper and lower teeth. Both the grinding and sliding lead to wear of the teeth and produce a noise during the night that is sufficiently loud to disturb the sleep of anyone sharing the bedroom. The tension produced causes problems in the muscles, tissues and other structures surrounding the jaw, ear pain, headaches, lesions to the teeth and disorders in the jaw joints. For an early, rapid, effective and economical diagnosis of bruxism, we propose the use of instrumented splints to detect and record the intensity and duration of inter dental pressure episodes. This paper sets out the design, manufacture and testing of an instrumented splint for diagnosing the signs of bruxism. The system stands out for its use of piezoelectric polymeric sensors which, because of their reduced thickness, do not cause any alteration to the patient’s bite. It lets a quantitative assessment of intraoral pressure be made and bruxism behavior be diagnosed at an early stage, so as to being able to programme corrective actions before irreversible dental wear appears. The first “in vitro” simulations and “in vivo “trials performed served to demonstrate the feasibility of the system in accordance with the initial objectives

Design and evaluation of a novel technology for ambulatory monitoring of bruxism events

International audienceBruxism is a widespread phenomenon whose diagnosis is usually made from non reliable, self-evaluation of the patient on one hand, and clinical signs whose absence does not mean absence of bruxism on the other hand. Different methods have been used in research setting for the assessment of bruxism such as portable electromyography but currently there exists no reliable method for the diagnosis of bruxism at home. In this paper, the hardware and software architecture of a complete ambulatory system, enabling long term monitoring of bruxism by measuring clenching/grinding forces of the patient is presented. The results of the tests conducted in vitro to evaluate the sensor's response are also presented. In vivo tests exhibited good correlation with an electromyography of the masseter muscle. With a maximum thickness of 2 mm, the discomfort for the patient is reduced and corresponds nearly to the usual thickness of an occlusal splint. This inductively rechargeable instrumented splint enables a long-term use over different periods and clenching/grinding data can be retrieved locally or transmitted wirelessly via WiFi, on a secured server, for further analysis

Polymeric Piezoelectric Sensors and Remote Communication for Detection of Bruxism

Active materials are capable of responding in a controlled way to different external physical or chemical stimulus by changing some of their properties. These materials can be used to design and develop sensors, actuators and multifunctional systems with a large number of applications for developing medical devices (for both surgery and implants). On the other hand, Bruxism is a health problem consisting on grinding or tightly clenching the upper and lower teeth, and both phenomena lead to wear of the teeth and produce a noise during the night that is sufficiently loud to disturb the sleep of anyone sharing the bedroom. The tension produced also causes problems in the muscles, tissues and other structures surrounding the jaw, ear pain, headaches, lesions to the teeth and disorders in the jaw joints. For an early, rapid, effective and economical diagnosis of bruxism, we propose the use of instrumented splints based on the use of active materials, in order to detect and record the intensity and duration of interdentally pressure episodes. This paper introduces the design, manufacture and testing of using instrumented splint for diagnosing bruxism. The contribution of this work basically focus on using piezoelectric polymeric sensors, taking advantage of their reduced thickness, and avoiding the alteration of the patient¿s bite. In addition, the system allows a quantitative assessment of intraoral pressure that consequently allows the diagnosis of bruxism behaviour at an early stage, aiming to perform corrective actions before irreversible dental wear appears. The first trials performed allowed to demonstrate the feasibility of the system, which also includes wireless communication capabilities for improving telemedicine tasks

Novel system for bite-force sensing and monitoring based on magnetic eear field communication

Intraoral devices for bite-force sensing have several applications in odontology and maxillofacial surgery, as bite-force measurements provide additional information to help understand the characteristics of bruxism disorders and can also be of help for the evaluation of post-surgical evolution and for comparison of alternative treatments. A new system for measuring human bite forces is proposed in this work. This system has future applications for the monitoring of bruxism events and as a complement for its conventional diagnosis. Bruxism is a pathology consisting of grinding or tight clenching of the upper and lower teeth, which leads to several problems such as lesions to the teeth, headaches, orofacial pain and important disorders of the temporomandibular joint. The prototype uses a magnetic field communication scheme similar to low-frequency radio frequency identification (RFID) technology (NFC). The reader generates a low-frequency magnetic field that is used as the information carrier and powers the sensor. The system is notable because it uses an intra-mouth passive sensor and an external interrogator, which remotely records and processes information regarding a patient?s dental activity. This permits a quantitative assessment of bite-force, without requiring intra-mouth batteries, and can provide supplementary information to polysomnographic recordings, current most adequate early diagnostic method, so as to initiate corrective actions before irreversible dental wear appears. In addition to describing the system?s operational principles and the manufacture of personalized prototypes, this report will also demonstrate the feasibility of the system and results from the first in vitro and in vivo trials

Design of a wearable bruxism detection device

Bruxism is a common problem which impacts on between 8 -31% of the general population and presents several symptoms including headaches, facial pain and damage to teeth for sufferers. While gold-standard technologies (e.g. polysomnography) exist and can be used in a clinical context for the diagnosis of bruxism, these are cumbersome and are constrained to laboratory-based testing as a result. In recent years, a number of portable wearable technologies have been developed and evaluated which are based on electromyography, electroencephalography, and/or electrocardiography. In this paper, the development of a novel wearable bruxism detection device based on Inertial Measurement Units (IMU) and a microphone is described as an alternative diagnostic tool for bruxism. The overall system architecture is defined and the implemented hardware platforms are described in detail. Finally, a discussion on the future work is also provided

O uso dos dispositivos oclusais no bruxismo do sono

O bruxismo é uma atividade muscular repetitiva dos músculos da mastigação, caracterizada por apertar ou trincar os dentes e / ou apoiar a mandíbula, e que é especificada como bruxismo do sono ou bruxismo acordado, dependendo do seu fenótipo circadiano. O objetivo deste estudo foi realizar uma revisão sistemática integrativa da literatura, para analisar o tratamento do bruxismo do sono (BS) com dispositivos oclusais. Foi realizada uma pesquisa eletrónica no banco de dados PubMed, utilizando uma combinação dos seguintes elementos de pesquisa: "bruxismo do sono", "bruxismo", "goteiras oclusais", "aparelhos oclusais" e "desordem temporomandibulares". A pesquisa identificou um total de 205 estudos, dos quais 14 foram considerados relevantes para este estudo. Tais estudos forneceram dados significativos, levando em consideração o diagnóstico de bruxismo do sono, os aparelhos oclusais utilizados e a eficácia do tratamento. Os resultados derivados da literatura observada analisaram dois tipos de goteira de diagnóstico (Bruxense e uma goteira de resina personalizada); vários tipos de aparelhos oclusais foram comparados, como placas de estabilização, dispositivos de avanço mandibular e retentor ortodôntico invisível. Foi também descrita a eficácia do tratamento de cada um deles. A conclusão desta revisão é que muitos estudos apoiaram a eficiência dos dispositivos oclusais para o tratamento do bruxismo do sono. No entanto as evidências aceites são insuficientes para determinar seu papel na redução, a longo prazo, dessa atividade

Management of bone defects with Bio-oss

Introduction: The defects in the alveolar bone might appear as a result of congenital malformations, traumatic injuries, periodontal disease, surgical traumas, chronic periapical changes and tumors from benign or malignant origin. The aim of this study was to provide solid and healthy area with application of Bio-Oss in the defect. Materials and methods: Based on the clinical diagnosisestablished by previously taken history, clinical examination and radiographic images oral-surgery interventions was made. To realize the aim of this work, augmentative material was implicated in the bone defects made in the patients after removal of follicular cyst, chronic periapical lesion, and parodontopathia. During the first and seventh day of the interventions, the patients have been followed through from aspect of possible development of local and general complications after the oral-surgery intervention. After period of one, three and six mount control x-ray was made. Results: Obtained results confirmed that: volume of the socket and defect of the bone was kept, fast revascularization was achieved, bone formation and slow resorption of the augmentative material was achieved, and period of normal healing without infection was also achieved. Conclusions: The augmentative materials used for treatment of bone defects besides their basic chemical and physical characteristics referring to their solubility in the body fluids, the transformation, modulation and resorption must be completely safe or secure, i.e. not to bring any risk of infection, immunological risk, physiological intolerance or inhibition of the process of restitutio ad integrum. In our study Bio-Oss was confirmed as augmentative material who had this characteristics. Keywords: bone defect, resorption of the bone, augmentative material, Bio-Os

Classic Reviews from Past Comprehensive Review Courses in Prosthodontics

https://deepblue.lib.umich.edu/bitstream/2027.42/154049/1/classic_reviews-vol1.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/154049/2/classic_reviews-vol2.pdfDescription of classic_reviews-vol1.pdf : Volume 1Description of classic_reviews-vol2.pdf : Volume