1,721,070 research outputs found
La Solari dalle origini alla crisi degli anni Novanta
No full textConosciuta in tutto il mondo per aver introdotto i famosi orologi e teleindicatori a ‘palette’, la Solari ha vissuto diverse fasi sul piano societario e gestionale. Sulla base di documenti d’archivio e testimonianze orali, il volume ricostruisce la storia dell'azienda tra il XX e il XXI secolo: dal forte impulso all’innovazione dei fratelli Remigio e Fermo Solari alla crescita ‘sbilanciata’ sotto l’egida della Pirelli, dalla rovinosa esperienza nel Gruppo Fornara alla rinascita dell’ultimo ventennio, quando, guidata dall’imprenditore Massimo Paniccia, la Solari ha saputo riconquistarsi un posto di rilievo tra le eccellenze del made in Italy
Comment on “Computer-Guided Arthrocentesis Using Patient-Specific Guides: A Novel Protocol for Treatment of Internal Derangement of the Temporomandibular Joint”
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Re: Condylectomy: treatment of recurrent unilateral dislocation of the temporomandibular joint in a patient with Ehlers-Danlos syndrome
No full textComment on “Computer-assisted surgery for replacement of the temporomandibular joint with customized prostheses: can we validate the results?”
No full textThe use of cutting/positioning devices for custom-fitted temporomandibular joint alloplastic reconstruction: current knowledge and development of a new system
No full textAlloplastic replacement of the temporomandibular joint (TMJ) is the treatment of choice in cases of TMJ end-stage disease. Improvements in computer-aided design/computer-aided manufacturing (CAD/CAM) translated into the possibility ongf designi very precise TMJ prostheses based on the anatomy of each single patient. Custom-made TMJ prostheses are described in the most recent literature and provide facilitations in terms of ease of placement and accuracy. Although before the era of custom-made surgical guides, they did not play a prominent role in the field of TMJ surgery, their use has become mandatory when custom-made prostheses are used. Surgical guides, generally known also as cutting guides, allow the subcondylar bone cut to be performed according to the exact shape and size of the planned prostheses. Additionally, they allow the predrilling of fixation holes in the mandible to minimize errors in prostheses positioning. However, the design of surgical guides did not evolve over time as much as prostheses did. In this paper the authors critically analysed literature on this topic and described the improvements of surgical guides over time. Moreover, based on the findings of literature research, a new cutting guide system was developed and is proposed in this article
Protocol for fully digital and customized management of concomitant temporomandibular joint replacement and orthognathic surgery
No full textEnd-stage temporomandibular joint (TMJ) disease is caused by a multitude of pathological processes that impair TMJ anatomy and function. In many cases, end-stage TMJ disease and dentofacial skeletal deformities coexist. The optimal treatment for such conditions is total alloplastic joint replacement and orthognathic surgery. Such procedures have historically been conducted in two separate stages. Furthermore, while technological improvements resulting from the widespread adoption of virtual reality initially led to significant improvements in the field of orthognathic planning, the adoption of virtual design techniques to optimize TMJ reconstruction was a later achievement. Therefore, planning for TMJ replacement and orthognathic surgery did not develop in parallel, leading to various combinations of planning for orthognathic surgery and TMJ replacement with the aim of performing both procedures simultaneously in one stage. Nowadays, improvements in virtual planning and three-dimensional printing have allowed these procedures to be conducted in the same surgical step based on fully digital planning and entirely customized surgery. This paper introduces a fully digital protocol for the treatment of end-stage TMJ disease and associated acquired dentofacial deformities, in which all surgical steps are customized and the whole surgery is performed in succession using automated procedures, thanks to the combined use of virtual surgical planning, surgical guides, custom-designed TMJ prostheses, and patient-fitted osteosynthesis devices
Comment on: “Does Accurate Positioning of the Temporomandibular Joint Titanium Condylar Prosthesis Prevent Complications?”
No full textSmall diameter and immediate loading implantology: A minimally invasive technique
No full textOBJECTIVES Minimally invasive surgery is a new paradigma also in dentistry. Historically, implant-prosthetic rehabilitations included the use of normal diameter implants also in the anterior area, often associated with surgical procedures of bone regeneration, surgical procedures which often had a strong impact on the patient both from a psychological and temporal but above all surgical point of view. In fact, surgery was often very invasive and although using innovative methods and tools, the morbidity was high. An attempt was therefore made to use tools which were less traumatic as possible on the bone, such as piezoelectric instruments which, thanks to their overmodulated frequency, allowed a selective, micrometric cut and therefore guaranteed a surgery with a less traumatic impact because they gave the operator the possibility of having constant control of the surgical instrument. This fact guaranteed at the same time a better cutting effectiveness on the bone tissue without damaging the soft tissues. These prerogatives allowed to obtain a better healing of hard and soft tissues. Outcomes supported by scientific research that have demonstrated a better and faster biological response where a piezoelectric instrument was used to perform surgery. Unfortunately, however, the use of traditional diameter implants forced the operator to try to obtain significant bone regeneration to ensure sufficient bone thickness around the implants to avoid dangerous dehiscence not only for the aesthetic result but for the survival of the implants themselves, and therefore as a matter of fact the surgery proved to be equally invasive despite the use of piezoelectric instruments. At present, however, in various clinical situations, the use of reduced diameter implants (<3.5 mm) has been proposed to be able to minimize the surgical procedures of increase in bone volume thus guaranteeing the patient a reduction in treatment times and costs, as well as a minor surgical trauma, and if we add to this the use of a less traumatic instrument like the piezoelectric one we can understand how this combination can allow us to have less traumatic surgical approaches. During the past, every situation in which patient lost bone volumes was treated with guided bone regeneration. It determined longer and more expensive therapies. A valid alternative could be represented by narrow implants, to reduce treatment time and cost. It will be presented a case report in which the patient has been rehabilitated with a immediate loaded narrow implant in esthetic area (2.2), combining the use of a piezoelectric instrument that was perfectly operational thanks to the use of inserts suitable for the preparation of the correct size implant site to receive a 3 mm implant. Implants that over time, thanks also to scientific works, have demonstrated a high validity such as to allow operators to be able to resolve cases that traditionally would have been faced with surgery aimed at obtaining bone regeneration in order to place traditional- sized implants, in a much more simple and predictable way. In the end, the use of an aesthetic prosthetic product allows an optimal finalization of the clinical case. MATERIALS AND METHODS A young female patient with tooth 2.2 agenesia has been treated with a narrow implant due to inter-radicular proximity. It has been decided to use piezoelectric implant insertion and provisional immediate loading restoration. The case has been finished, after healing, with a litium disilicate definitive crown. DISCUSSION The evolution of surgical techniques seeks the reduction of post-operative morbidity and the reduction of the time and inconvenience of the intervention. Piezoelectric surgery has shown in particular a marked atraumaticity towards especially soft tissues and becomes an election choice in cases where surgical precision must be a primary objective. The small diameter implants allow to avoid very invasive regenerative procedures with long healing times. CONCLUSIONS Narrow implants could be considered a valid alternative to more invasive procedures like bone regeneration. CLINICAL SIGNIFICANCE The objective of the authors is to give to clinicians a valid therapeutic alternative, in every patient who need an implant supported rehabilitation but has poor bone volumes and less time or money capability
A case report of chondrocalcinosis of the temporomandibular joint: Surgical management and literature review
Full text linkBackground: Chondrocalcinosis is a metabolic disorder characterized by non-infectious joint inflammation with intra- or periarticular calcification. Temporomandibular (TMJ) chondrocalcinosis is rare and not usually included in the differential diagnosis of TMJ and facial pain disorders. Case report: A 67-year-old woman presented with a calcified mass in the right TMJ between the condyle and glenoid fossa, eroding into the floor of the middle cranial fossa due to calcium pyrophosphate deposition in the TMJ. She underwent surgical excision of the mass with immediate econstruction with a custom-made prosthesis. On follow-up, there was complete clinical resolution, with no evidence of recurrence. Literature related to surgical treatment of chondrocalcinosis of TMJ and its treatment was reviewed. Surgery is the most commonly used treatment. A custom-made device allowed us to bridge the defect caused by the destructive disease process. Conclusion: Custom-made prostheses can be considered a safe and effective solution in erosive forms of chondrocalcinosis, replacing the TMJ to restore functionality and correct the anatomical defect
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