scholarly journals Clinical Performance of a New Biomimetic Double Network Material

2013 ◽  
Vol 7 (1) ◽  
pp. 118-122 ◽  
Author(s):  
Christine Dirxen ◽  
Uwe Blunck ◽  
Saskia Preissner
Keyword(s):  
Soft Tissues ◽  
Clinical Performance ◽  
Young Patients ◽  
Tooth Wear ◽  
Clinical Situation ◽  
Dental Erosion ◽  
Thin Layers ◽  
Invasive Treatment ◽  
Tooth Structure ◽  
Non Invasive

Background:The development of ceramics during the last years was overwhelming. However, the focus was laid on the hardness and the strength of the restorative materials, resulting in high antagonistic tooth wear. This is critical for patients with bruxism.Objectives:The purpose of this study was to evaluate the clinical performance of the new double hybrid material for non-invasive treatment approaches.Material and Methods:The new approach of the material tested, was to modify ceramics to create a biomimetic material that has similar physical properties like dentin and enamel and is still as strong as conventional ceramics.Results:The produced crowns had a thickness ranging from 0.5 to 1.5 mm. To evaluate the clinical performance and durability of the crowns, the patient was examined half a year later. The crowns were still intact and soft tissues appeared healthy and this was achieved without any loss of tooth structure.Conclusions:The material can be milled to thin layers, but is still strong enough to prevent cracks which are stopped by the interpenetrating polymer within the network. Depending on the clinical situation, minimally- up to non-invasive restorations can be milled.Clinical Relevance:Dentistry aims in preservation of tooth structure. Patients suffering from loss of tooth structure (dental erosion, Amelogenesis imperfecta) or even young patients could benefit from minimally-invasive crowns. Due to a Vickers hardness between dentin and enamel, antagonistic tooth wear is very low. This might be interesting for treating patients with bruxism.

scholarly journals Accuracy of BIS monitoring using a novel interface device connecting conventional needle-electrodes and BIS sensors during frontal neurosurgical procedures

PLoS ONE ◽  
2021 ◽  
Vol 16 (10) ◽  
pp. e0258647
Author(s):  
Hideki Harada ◽  
Seiya Muta ◽  
Tatsuyuki Kakuma ◽  
Misa Ukeda ◽  
So Ota ◽  
...  
Keyword(s):  
Mixed Model ◽  
Linear Mixed Model ◽  
Clinical Performance ◽  
Clinical Situation ◽  
Electrode Placement ◽  
Neurosurgical Procedures ◽  
Non Invasive ◽  
Invasive Method ◽  
Data Points ◽  
Interface Device

Background Bispectral index (BIS) monitoring is a widely used non-invasive method to monitor the depth of anesthesia. However, in the event of surgeries requiring a frontal approach, placement of the electrode may be impossible at the designated area to achieve a proper BIS measurement. Methods We developed an investigational interface device to connect needle-electrodes to BIS sensors. The safety and clinical performance were investigated in patients who underwent surgery. Direct BIS values from a disposable BIS electrode and indirect values via the interface device were simultaneously recorded from the same areas of electrode placement in a single patient. The agreement between the direct and indirect BIS values was statistically analyzed. Results The interface device with a silver electrode demonstrated sufficient electric conduction to transmit electroencephalogram signals. The overall BIS curves were similar to those of direct BIS monitoring. Direct and indirect BIS values from 18 patients were statistically analyzed using a linear mixed model and a significant concordance was confirmed (indirect BIS = 7.0405 + 0.8286 * direct BIS, p<0.0001). Most observed data (2582/2787 data points, 92.64%) had BIS unit differences of 10 or less. Conclusions The interface device provides an opportunity for intraoperative BIS monitoring of patients, whose clinical situation does not permit the placement of conventional adhesive sensors at the standard location.

Amelogenesis Imperfecta: A Non-Invasive Approach to Improve Esthetics in Young Patients. Report of Two Cases

2017 ◽  
Vol 41 (5) ◽  
pp. 332-335
Author(s):  
Maria Grazia Cagetti ◽  
Stefano Cattaneo ◽  
Ye Qing Hu ◽  
Guglielmo Campus
Keyword(s):  
Young Patients ◽  
Minimal Invasive ◽  
Amelogenesis Imperfecta ◽  
Invasive Treatment ◽  
Invasive Approach ◽  
Resin Infiltration ◽  
Non Invasive ◽  
Minimal Invasive Treatment ◽  
Infiltrant Resin

Objective–Evaluate esthetic and functional efficacy of infiltrant resin (Icon, DMG, Hamburg, Germany) in Amelogenesis Imperfecta's treatment. Study design: Two adolescent patients, G.S. (13 years old) and C.M. (15 years old), affected by the hypomaturation type of Amelogenesis Imperfecta, were treated with Icon resin and were followed for twelve months. Results: Treated teeth show an excellent aesthetical result immediately after the resin application, effect that lasts in the long-term (six and twelve months follow-up examinations); the dental wear's progression seems to be clinically arrested. Conclusions: Resin infiltration has proven to be a minimal invasive treatment for dental discoloration, less aggressive than conventional procedures. This approach might be recommended for a stable esthetical improvement in moderate AI's lesions especially in children and adolescents.

Design and characterization of a novel permanent magnet synchronous motor used in a growing prosthesis for young patients with bone cancer

2008 ◽  
Vol 222 (3) ◽  
pp. 393-402 ◽  
Author(s):  
J M Meswania ◽  
S J G Taylor ◽  
G W Blunn
Keyword(s):  
Soft Tissues ◽  
Permanent Magnet Synchronous Motor ◽  
Young Patients ◽  
Bone Cancer ◽  
Synchronous Motor ◽  
Limb Salvage Surgery ◽  
Non Invasive ◽  
The United Kingdom ◽  
Invasive Device ◽  
Opposite Limb

Approximately 50 child sarcomas are treated with limb salvage surgery each year in the United Kingdom. These children need an extendable implant that can be lengthened periodically to keep pace with the growth in the opposite limb. Surgically, invasive devices have been used for the past 30 years with intrinsic problems of infection and long-term recurrent trauma to the patient. To eliminate problems associated with the invasive device, a non-invasive extendable prosthesis was developed. The magnetically coupled drive technology used for this prosthesis was a synchronous motor with a gear-driven telescoping shaft. In this design the motor configuration was in two parts: a rotating magnet (rotor) that fitted inside the prosthesis where space was limited and the stator, which was an external device used to extend the prosthesis remotely as the patient grew. This compact external drive produced a focused magnetic flux that required no cooling and operated on a single-phase power supply. The extending mechanism in the implant was able to overcome up to 1300 N force, which is the tension force exerted by the soft tissues during the lengthening procedure. The device has been successfully implanted in 50 patients.

scholarly journals Nanosilver fluoride as a caries arresting agent: A narrative review

2021 ◽  
pp. 1-13
Author(s):  
Mohammed Zameer ◽  
◽  
Sameen Badiujjama Birajdar ◽  
Syed Nahid Basheer ◽  
Syed Wali Peeran ◽  
...  
Keyword(s):  
Dental Caries ◽  
Silver Ions ◽  
Oral Disease ◽  
Invasive Treatment ◽  
Silver Diamine Fluoride ◽  
Tooth Structure ◽  
Non Invasive ◽  
Lesion Level ◽  
Contemporary Management ◽  
Significant Attention

Dental caries is the most prevalent oral disease that continues to affect almost every country in the world. The contemporary management of dental caries focuses on non-restorative, non-invasive, and micro-invasive treatment approaches that arrest or reverse the caries process at a lesion level and reduce the loss of sound tooth structure. One of these approaches is the employment of caries arresting agents that possess antibacterial and remineralizing properties. Silver diamine fluoride (SDF) has drawn significant attention as an efficient caries arresting agent in children and adults. The major limitation with the use of SDF is the dark black staining of the carious tissue that compromises the esthetics. Silver ions are known for their antimicrobial effects, and silver nanoparticles (AgNPs) have the added advantage that it increases the surface area for exposure to the microbes. Literature reports that AgNPs have antimicrobial potential against predominant cariogenic flora. It has led to the development of nanosilver fluoride (NSF), a new colloid based on AgNPs, chitosan, and fluoride. It has shown to overcome the clinical limitations of SDF as it does not cause carious lesion staining. However, the current scientific literature lacks a comprehensive review of the benefits of using NSF for caries prevention and arrest. Thus, the purpose of this paper was to review the studies and clinical trials on NSF as a caries arresting agent, including antibacterial actions and modulation of the demineralization-remineralization balance.

scholarly journals About Cantilevered Resin Bonded Bridges

2021 ◽  
Vol 8 ◽  
Author(s):  
Soraya El Yaagoubi ◽  
Morchad Bouabid ◽  
Amal El Yamani
Keyword(s):  
Periodontal Diseases ◽  
Survival Rates ◽  
Clinical Situation ◽  
Treatment Modalities ◽  
Invasive Treatment ◽  
Non Invasive ◽  
Fixed Dental Prosthesis ◽  
Significant Difference ◽  
All Ceramic ◽  
Post Traumatic

Resin bonded bridge technique was first introduced in 1963 by Rochette. It was the first type of non-invasive fixed dental prosthesis because the abutment tooth didn’t undergo any prior preparation. As early as 1996, Hussey and Linden studied cantilever resin bonded bridges and showed that there was no significant difference in the survival rates of a conventional bridge and cantilever resin bonded bridges. The main indications for a resin bonded bridge in children are post-traumatic edentulousness, during the early detection of agenesis and pre-implant temporization situations. Resin bonded bridges are also recommended in adults when the implant context is unfavourable or contraindicated (periodontal diseases and / or anatomical and prosthetic obstacles). Cantilever resin bonded bridge has many advantages compared to the traditional bridge: simpler and faster to make, more economical for the patient, easier hygiene and absence of partial detachment that can lead to secondary caries lesion.The preparation criteria will be adapted to the clinical situation, which will take into account the patient's age, the extent of edentulousness, the extent of occlusal loads and dental mobility. Thus, when the joint is subject to excessive stress, retention devices will complete the preparation. With the continuous development of materials as well as new minimally invasive treatment modalities, the alternative solution of the bonded bridge in the anterior region now corresponds to the realization of an all-ceramic zirconia cantilever bridge with a single wing.

Dental Erosion in Children

2009 ◽  
Vol 3 (3) ◽  
pp. 56-61 ◽  
Author(s):  
I.K. Pandit
Keyword(s):  
Risk Factor ◽  
Health Problem ◽  
Dental Health ◽  
Tooth Wear ◽  
Dental Erosion ◽  
Modern World ◽  
Irreversible Damage ◽  
Clinical Appearance ◽  
Tooth Structure ◽  
Diagnostic Protocol

ABSTRACT Dental erosion or chemical wearing away of the tooth structure is a dental health problem of the modern world and if not detected early, may result in serious irreversible damage to the dentition. An awareness of its clinical appearance, etiology, and risk factor is important to plan the preventive and curative management of such problems. This paper discusses the diagnostic protocol along with preventive and various restorative options available to treat this multifactorial nature of tooth wear.

Vital Tooth Whitening Techniques. A literature Review

2020 ◽  
Vol 02 ◽  
Author(s):  
Pia Chatterjee Kirk
Keyword(s):  
Soft Tissues ◽  
Treatment Time ◽  
Tooth Bleaching ◽  
Tooth Whitening ◽  
Easy Method ◽  
Tooth Structure ◽  
Dental Esthetics ◽  
Total Treatment Time ◽  
Restorative Materials ◽  
Total Treatment

Background: Vital tooth whitening has become an integral part of esthetic dentistry and remains one of the safest and most economic options today to improve dental esthetics without removing tooth structure. The tooth whitening materials have evolved into three categories: dentist-prescribed/dispensed (in office and patient home-use), and over-thecounter purchased and applied by patients. Objective: This review outlines the latest advances in dentist prescribed vital teeth whitening techniques, effects on tooth structure, soft tissues, and dental restoratives. Areas requiring additional research are also discussed. Methods: Electronic and manual literature search was conducted for key words such as tooth bleaching, and dental bleaching techniques using PubMed/MEDLINE, followed by manual selection of the studies that included whitening procedures in vital teeth. Results: The two main whitening agents are carbamide peroxide (CP) and hydrogen peroxide (HP or H2O2) whose concentration, duration of contact, and total treatment time can alter results. In addition, factors including the type of stain, and age of patient can affect results. Although whitening agents can affect tooth structure, restorative materials, and gingival tissues, the changes are temporary or can be treated using minimally invasive techniques. Conclusion: Areas requiring further research include the actual mechanism of whitening, its effect on tooth structure and restorative materials, and the development of an easy method to quantitate the degree of whitening in the dental office.

scholarly journals Carbon Dioxide Laser Vulvovaginal Rejuvenation: A Systematic Review

Cosmetics ◽  
2021 ◽  
Vol 8 (3) ◽  
pp. 56
Author(s):  
Tassahil Messas ◽  
Achraf Messas ◽  
George Kroumpouzos
Keyword(s):  
Carbon Dioxide ◽  
Systematic Review ◽  
Laser Therapy ◽  
Carbon Dioxide Laser ◽  
Invasive Treatment ◽  
Erbium:Yag Laser ◽  
Non Invasive ◽  
Level I ◽  
Carbon Dioxide Co2

Genitourinary syndrome of menopause (GSM) causes significant symptomatic aggravation that affects the quality of life (QoL). Vulvovaginal atrophy (VVA), the hallmark of GSM, is managed with topical non-hormonal therapy, including moisturizers and lubricants, and topical estrogen application. Patients not responding/being unsatisfied with previous local estrogen therapies are candidates for a noninvasive modality. Carbon dioxide (CO2) laser therapy, especially the fractionated type (FrCO2), has drawn considerable attention over the past two decades as a non-invasive treatment for GSM. This systematic review describes the accumulated evidence from 40 FrCO2 laser studies (3466 participants) in GSM/VVA. MEDLINE, Scopus and Cochrane databases were searched through April 2021. We analyze the effects of FrCO2 laser therapy on symptoms, sexual function, and QoL of patients with GSM/VVA. As shown in this review, FrCO2 laser therapy for GSM shows good efficacy and safety. This modality has the potential to advance female sexual wellness. Patient satisfaction was high in the studies included in this systematic review. However, there is a lack of level I evidence, and more randomized sham-controlled trials are required. Furthermore, several clinical questions, such as the number of sessions required that determine cost-effectiveness, should be addressed. Also, whether FrCO2 laser therapy may exert a synergistic effect with systemic and/or local hormonal/non-hormonal treatments, energy-based devices, and other modalities to treat GMS requires further investigation. Lastly, studies are required to compare FrCO2 laser therapy with other energy-based devices such as erbium:YAG laser and radiofrequency.

scholarly journals Primitive Neuroectodermal Tumor of the Liver: A Case Report

2011 ◽  
Vol 2011 ◽  
pp. 1-4 ◽  
Author(s):  
Eduardo Cambruzzi ◽  
Enilde Eloena Guerra ◽  
Hamilton Cardoso Hilgert ◽  
Herbert Jorge Schmitz ◽  
Vinícius Lopes Silva ◽  
...  
Keyword(s):  
Primitive Neuroectodermal Tumor ◽  
Soft Tissues ◽  
Young Patients ◽  
Neuroectodermal Tumor ◽  
Solid Mass ◽  
Resected Liver ◽  
The Central Nervous System ◽  
Right Lobe ◽  
Upper Abdominal ◽  
The Right

Primary liver sarcomas represent a rare group of neoplasias, with angiosarcoma being the most common histological type. Primitive neuroectodermal tumor (PNET) represents a high malignant neoplasia that usually affects the central nervous system and soft tissues. An 18-year-old male patient was admitted with clinical complains of pain in the right upper abdominal quadrant. The clinical evaluation revealed a solid mass in the right hepatic lobe. On the gross examination of the resected liver specimen, the right lobe of the liver was replaced by a yellow-red solid mass measuring 21 cm in its largest dimension. On the histopathology, a tumor composed of small round blue cells with little cytoplasm and round nuclei was identified. The lesion revealed positive immunoexpression for vimentin and CD99 and negative immunostaining for desmin, CD45, cytokeratin, and neuroblastoma protein, suggesting, then, the diagnosis of PNET. Although it is an unusual tumor, it should be considered in the differential diagnosis of liver masses, especially in young patients.

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