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For patients diagnosed with advanced malignant parotid tumour, radical parotidectomy with facial nerve sacrifice is part of the treatment. Multiple surgical techniques have been developed to cure facial paralysis in order to restore the function and aesthetics of the face. Despite the large number of publications over time on facial nerve reanimation, a consensus on the timing of the procedure or the donor graft selection has remained to be established. Therefore, the aim of the present study was to conduct a bibliometric analysis to identify and analyse scientific publications on the reconstruction of the facial nerve of patients who underwent radical parotidectomy with facial nerve sacrifice. The analysis on the topic was conducted using the built-in tool of the Scopus database and VOSviewer software. The first 100 most cited articles were separately reviewed to address the aim of the study. No consensus was found regarding the recommended surgical techniques for facial nerve reanimation. The most used donor cranial nerves for transfer included the following: Masseteric branch of the V nerve, contralateral VII nerve with cross-face graft, the XI nerve and the XII nerve. The best timing of surgery is also controversial depending on pre-exiting pathology and degree of nerve degeneration. However, most of the clinical experience suggests facial nerve restoration immediately after the ablative procedure to reduce complications and improve patients' quality of life. [ABSTRACT FROM AUTHOR]

In dental practice, the fidelity of a model is given by the quality and type of material used, the technique by which it is made, and last but not least by the experience and skill of the dental technician. But, the emergence of CAD-CAM technology has led to a major change in the stages of making the working model, through the development of the virtual model. Thus, the purpose of this material is to perform a comparative study between several techniques for obtaining sectional working models, with or without pins, compared to the virtual model obtained by CAD-CAM technique. [ABSTRACT FROM AUTHOR]

Dental veneers made of ceramic masses are considered on conservative solution for patients that require an enhancement of shape, shade, dimension and/or position of anterior teeth. Ceramic veneers are successfully used on large scale to hide tooth discoloration, to correct the position and minor defects of teeth, without removing significant quantities of hard tissues. [ABSTRACT FROM AUTHOR]

Background and Objectives: The ever more complex modern dental education requires permanent adaptation to expanding medical knowledge and new advancements in digital technologies as well as intensification of interdisciplinary collaboration. Our study presents a newly developed computerized method allowing virtual case simulation on modular digital dental models and 3D-printing of the obtained digital models; additionally, undergraduate dental students' opinion on the advanced method is investigated in this paper. Materials and Methods: Based on the digitalization of didactic dental models, the proposed method generates modular digital dental models that can be easily converted into different types of partial edentulism scenarios, thus allowing the development of a digital library. Three-dimensionally printed simulated dental models can subsequently be manufactured based on the previously obtained digital models. The opinion of a group of undergraduate dental students (n = 205) on the proposed method was assessed via a questionnaire, administered as a Google form, sent via email. Results: The modular digital models allow students to perform repeated virtual simulations of any possible partial edentulism cases, to project 3D virtual treatment plans and to observe the subtle differences between diverse teeth preparations; the resulting 3D-printed models could be used in students' practical training. The proposed method received positive feedback from the undergraduate students. Conclusions: The advanced method is adequate for dental students' training, enabling the gradual design of modular digital dental models with partial edentulism, from simple to complex cases, and the hands-on training on corresponding 3D-printed dental models. [ABSTRACT FROM AUTHOR]

The aim of the present systematic review was to compare three ridge augmentation procedures in order to assist clinicians in finding the ideal surgical method relative to the horizontal bone gain needed and the width of the alveolar ridge available. An electronic and hand literature search was performed in the online databases PubMed-Medline, Cochrane Central Register of Controlled Trials, EMBASE, Cochrane Oral Health Group Trials Register and Web of Science, and various specialized journals, between January 2017 and December 2022. The included studies were evaluated using the Methodological Index for Non-randomized Studies score and Cochrane's RoB tool. The primary variable studied in the meta-analysis was the final bone gain. The implant survival rate and initial ridge width were the secondary variables. Then four studies on ridge expansion via osseodensification (OD), seven on guided bone regeneration (GBR) and seven on the ridge-split technique (RS) were included in the review; 17 out of 18 were selected for meta-analysis. The mean horizontal bone gain for OD was 2.151 mm [1.327-2.975 mm; 95% confidence interval (CI)], for GBR was 4.036 mm (3.351-4.772 mm 95%CI) and for RS was 3.661 mm (2.991-4.399 mm 95%CI). The results were statistically significant (P=0.002). GBR reported the most bone gain horizontally, followed closely by RS and then OD. OD is a recent technique that should be taken into account when discussing the protocols of horizontally atrophied ridge rehabilitation. [ABSTRACT FROM AUTHOR]

Prosthetic rehabilitation of the maxillary front teeth is an extremely laborious problem for the dental team, consisting of the dentist and the dental technician. If for the physiognomic component the most recommended materials are the ceramic masses, for the resistance substrate there are several variants. Conventional technologies using dental alloys and modern ones involving the use of zirconium dioxide can be used successfully in performing fixed prosthetic restorations in the maxillary frontal area, both options having both advantages and disadvantages, as we will describe in this material. [ABSTRACT FROM AUTHOR]

Obtaining an extremely precise virtual model is decisive for the final success of prosthetic restorations on implants using CAD–CAM technology. Intraoral digital implant impression can be challenging under specific conditions (e.g., narrow spaces, lack of visibility, or subgingival margins) because sometimes the scan body does not reach an optimal supragingival level so that it can be scanned accurately. We propose an easy and quick solution, which uses an extraoral transfer device that requires minimum time and cost investment. [ABSTRACT FROM AUTHOR]

Communication between the clinical department (dental office) and the technical department (dental laboratory) is one of the topics that often comes to the mind of every dental technician or dentist. This communication can be done by different methods as a type of inter-compartment communication, but diagnostic wax-up, along with Digital Smile Design and mock-up, is not only one of the most effective, but also one of the clearest and precise ways of transmitting information from the dental technician to the dentist, and implicitly to the patient, but also vice versa. [ABSTRACT FROM AUTHOR]

The Resistance was a reaffirmation of France's independence and individuality, as well as a struggle to regain freedom and, above all, national integrity. In fact, many historians appreciate that the French Resistance could have achieved more if it had been more effectively integrated into Allied plans and strategies. Thus, in this material we tried to present some short biographies of dentists who worked in the French Resistance against the German occupation troops, some of them even paying with their lives for the courage they showed. [ABSTRACT FROM AUTHOR]

Background: The mechanisms of periimplantitis are mostly based on biofilm-induced inflammatory lesions around dental implants. However, the host reaction, reflected by the intensity of the inflammatory response to bacterial products, is crucial for peri-implant bone destruction. The aim of this pilot study was to measure total antioxidant status (TAS), the amount of IL-6, IL-8 and TNF-α (tumor necrosis factor), salivary lactate dehydrogenase (LDH) levels and the correlation with one-year peri-implant bone loss. Methods: Seven consecutive patients (Group 1), with the presence of at least one prior inserted dental implant, and three healthy individuals, fully dentate (Group 0), were enrolled. IL-6, IL-8, TNF-α, TAS and LDH were determined in saliva of both groups. Peri-implant marginal bone loss (MBL) at one year compared to baseline was evaluated for Group 1. Results: A statistically significant positive correlation was found in Group 1 between MBL and the IL-8 (p = 0.033) and a strong negative correlation between MBL and TAS (p = 0.002), but no statistically significant differences of the assessed parameters were found between the two groups. Conclusions: In the limits of the present preliminary study, salivary TAS and proinflammatory cytokines could be associated with the risk of peri-implant bone loss over time. [ABSTRACT FROM AUTHOR]

No other man in history has influenced his era as decisively as Napoleon Bonaparte did. His life was that of an exceptionally gifted man, who knew how to make the most of all the opportunities offered by history. In this paper, we will approach the problem of dentistry, during the period when France was managed by the exceptional statesman, Napoleon Bonaparte, presenting in the second part of this material, the biographies of some personalities of French dentistry from that period. [ABSTRACT FROM AUTHOR]

Due to the increase in the number of patients with allergic reactions to classic acrylic resins, dentists together with dental technicians have approached another treatment plan for allergic patients, their removable dentures being made of flexible materials. In this material, several technological aspects will be addressed regarding the fabrication of complete dentures from flexible materials, as an alternative to those made from heat cure acrylic resins. [ABSTRACT FROM AUTHOR]

CAD-CAM technology, intuitively named "One hour dentistry", can currently be considered "a revolution" in the field of dentistry. The material mainly used in CAD-CAM technology for the construction of the resistance core of future prosthetic restorations is zirconium oxide, and ceramic masses are used to create the physiognomic component. The purpose of this material is to present some extremely interesting technological aspects involved in the aesthetic rehabilitation of the upper frontal area with the help of this revolutionary technology, which is CAD-CAM technology [ABSTRACT FROM AUTHOR]

In dentistry, ceramics represent one of the four major classes of materials used to reconstruct teeth that have undergone deep carious processes, trauma or to restore missing teeth. The purpose of this material is to present several practical components, which intervene in the fabrication of prosthetic restorations on zirconium oxide support, insisting especially on the details related to the stratification of the ceramic masses. The superior aesthetic appearance of ceramic-coated zirconia restorations is obtained because the material used helps to reproduce the optical properties of a natural tooth. [ABSTRACT FROM AUTHOR]

Dental bridges with ceramic veneers on a zirconium oxide support represent a very complex prosthetic work, difficult to make and requiring computerized milling manufacturing technology. Thus, this material presents some practical aspects, regarding the manufacturing of dental bridges on Zirconia support. [ABSTRACT FROM AUTHOR]

In the last 2 decades, exciting new developments have led to the success in dentistry of CADCAM technology. Thus, the objectives of this material are to describe a practical situation, insisting mainly on the technological aspects, regarding the use of CAD-CAM technology in obtaining the wax pattern of the metallic infrastructure for fixed prosthetic restorations. The creation of virtual pattern using digital design and its transformation into wax by milling from a special wax block is described (subtractive CAD-CAM technique). [ABSTRACT FROM AUTHOR]

The use of glass ceramic masses based on lithium disilicate, used by pressing technology (pressed ceramics), represents a very interesting alternative, and above all extremely effective for obtaining totally physiognomic prosthetic restorations. But, for the manufacture of such pressed ceramic prosthetic restorations, it is necessary not only a very good collaboration between the dental office and the dental laboratory, but also a very good professional training of all the members who make up the dental medical team: prosthodontist, dental nurse and dental technician. [ABSTRACT FROM AUTHOR]

At this moment, the diagnostic wax-up is one of the most precise methods through which the dental team, dentist and dental technician, can show to the patient the future shape of prosthetic restorations. Specifically, the diagnostic wax-up is considered a valuable diagnostic tool used in dental practice (both in the dental office and in the dental laboratory), to establish a clear visual representation of the desired result. [ABSTRACT FROM AUTHOR]

All-ceramic fixed prosthetic restorations present a special aesthetic; they perfectly reproduce the texture, translucency and natural shades of the teeth, being a first choice for restoring not only the front teeth, but also those in the lateral area. In this material, several aspects are presented, regarding the technology for the obtaining of fully physiognomic, all-ceramic single-tooth fixed prosthetic restorations, mainly insisting on the stages carried out in the dental laboratory, but without omitting the clinical stages as well. [ABSTRACT FROM AUTHOR]

Complete dentures made of flexible materials, especially the mandibular ones, have special qualities, such as: flexibility, high fidelity, good chemical and physical properties, translucency and comfort. Thus, this material tries to describe as briefly as possible the essential technological stages of obtaining complete mandibular dentures made of a flexible material. Also, the present material tries to highlight the role of the dental technician in the design and realization of these types of prosthetic restorations. [ABSTRACT FROM AUTHOR]

Ceramic masses are the first choice of patients, who want prosthetic restorations to be as close as possible to the physiognomic appearance of natural teeth, but also to their physical and chemical properties. Thus, in this material we tried to present a series of aesthetic requirements, in terms of not only the use, but also the manufacture of fixed prosthetic restorations made of pressed ceramics. [ABSTRACT FROM AUTHOR]

Knowing that the work of the dental technician involves maintaining a prolonged sitting position, most procedures for prosthetic or orthodontic devices require a long time to perform, but also a very high accuracy, this specialist is more susceptible to cardiovascular disease due to prolonged sedentary occupational behavior. This is why the purpose of this study is to identify the self-reported prevalence of potential for cardiovascular risk among students from dental technology program at the University of Medicine and Pharmacy “Carol Davila” in Bucharest, in order to establish the need for intervention to increase resistance to these risk factors. [ABSTRACT FROM AUTHOR]

A strong and efficient communication between the clinical department represented by the dental office and the technical department represented by the dental laboratory is the key to success in making a prosthetic restoration, regardless of whether we are talking about fixed, mobile, implantsupported prosthetic restorations, but also about different orthodontic appliances. Thus, in this material we tried to present various aspects of a theoretical and practical nature on the communication between dentist - patient - dental technician in the process of designing and creating implant-prosthetic restorations. [ABSTRACT FROM AUTHOR]

CAD-CAM technology has become the option of choice for making prosthetic parts, because this technology has helped a lot in the discovery of an extremely important material, namely, zirconium oxide (zirconia). As a major advantage, zirconium oxide offers a superior aesthetic to other prosthetic restorations. In the present material, we have tried to present in detail, the manufacture of a zirconium oxide based fixed multi-denture prosthetic restoration located in the maxillary frontal and lateral region, insisting mainly on the laboratory stages. [ABSTRACT FROM AUTHOR]

The classic complete denture is still a frequent used prosthetic treatment, most of the totally edentulous patients being represented by elderly people, with modest financial status, who perceive the loss of teeth as a disability. At this moment, prosthetic restoration on dental implants almost completely solves this problem. Thus, in this material we set out to study a case in which implant supported overdentures is a therapeutic option of choice, when the classic complete denture becomes really problematic. [ABSTRACT FROM AUTHOR]

Dental technology has advanced considerably, and there are now a number of new, more effective methods that save some of the time and cost of getting the perfect smile. Ceramic restorations obtained by press technology are used in more and more countries, because the technological workflow involve the use of lost wax technique, a technique well known by most dental technicians. Allceramic restorations are very sensitive prosthetic parts, therefore, the use of very fluid impression materials is also required, as well as materials for making models, which would give the finest details of the prosthetic field. It must be taken into account that the technological flow is very long, and errors can occur at any time. [ABSTRACT FROM AUTHOR]

Introduction: Obtaining a certain bone volume is an important goal in implantology or orthopedics. Thus, after tooth extraction, quite a lot of horizontal and vertical alveolar bone is lost in time and can be detrimental to the implant treatment outcome, while the treatment of critical bone defects is a considerable challenge for surgery., Objectives: In this study we designed a new in vivo model as an useful experimental tool to assess guided bone regeneration (GBR) using a computer-aided design/manufacturing (CAD-CAM) space-maintaining barrier., Methods: The barrier was 3D printed with three progressive heights, surgically placed on rat femur, and GBR results were analyzed at 2, 4, and 8 weeks by X-ray and bone mineral density analysis, histology/morphometry and by immunofluorescence and immunohistochemistry for osteogenesis and angiogenesis evaluation., Results: The obtained results show that the proposed experimental model provides a real-time useful information on progressive bone tissue formation, which depends on the volume of isolated space created for GBR and on molecular events that lead to satisfactory vertical and horizontal bone augmentation and osteointegration., Conclusion: In conclusion, the proposed customized three-dome space-maintaining barrier is suitable as an experimental tool to assess the potential of using the designed barriers in dentistry and orthopedics to promote the formation of new bone and determine their space- and time-dependent limitations. Meanwhile, guided bone augmentation for dentistry requires subsequent evaluation on an alveolar bone preclinical model followed by clinical implementation., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (© 2020 The Authors. Published by Elsevier B.V. on behalf of Cairo University.)