69 research outputs found
I testi della prosa letteraria e i contatti col francese e col latino. Considerazioni sui modelli.
No full textIl ruolo di Pisa nel veicolare testi letterari in prosa delle Origini è noto. In questo contributo si tenta di dar conto in modo sistematico della consistenza testuale e codicologica di tale fenomeno, incrociando i dati relativi ai testi letterari (non solo romanzeschi, ma anche filosofici, didattici e agiografici), alle lingue di origine (francese, latino e provenzale) e alla provenienza geografica dei manoscritti in lingua toscano-occidentale (spesso extra-cittadina)
Le manuscrit 3325 de la Bibliothèque de l’Arsenal de Paris (A1)
No full textL’article examine les caractéristiques codicologiques et linguistiques du ms. A1 et trouve dans l ’aire génoise de la seconde moitié du XIIIe siècle une possible origine du codex. Il met la lumière sur la production manuscrite liée à Gênes et à la Ligurie des années 1270, qui montre des liens indubitables avec A1. Ce témoignage du Guiron et de la Suite confirme son rôle de maillon entre la production française septentrionale des romans arthuriens en prose et le groupe de manuscrits chevaleresques et courtois de l ’atelier “pisano-génois”
Upper airways 3D study before and after oral appliance therapy in obstructive sleep apnea
No full textAim: Obstructive Sleep Apnea Syndrome (OSAS) shows apnea or hypopnea due to upper airways stenosis during sleep with its typical symptoms including snoring during sleep and excessive daytime sleepiness. Cone Beam Computed Tomography (CBCT) useful to reach an accurate 3D volumetric analysis of upper airways. The Oral Appliances (OA) are considered to be an effective treatment for Obstructive Sleep Apnea (OSA). The aim is to detect morphological changes in upper airways using CBCT before and after oral appliance therapy.
Methods: The study included 30 patients (18 males and 12 females). They were diagnosed with OSA using polysomnography (PSG). Some criteria have been applied to diagnose OSAS: an apnea-hypopnea index (AHI) of >5 per hour during sleep and pathological daytime sleepiness. The therapeutic effect of oral appliance was evaluated by using PSG and when it showed an AHI of <10 or a decrease of >50%. Two types of OA were applied: the Mandibular Advancement Device and Twin Block Appliance. These enlarged the upper airways by holding the mandible forward, at the 60-70% of the maximum mandible advancement and at the minimum vertical position. A CBCT was performed in all the patients.
Results: The mean upper airways 3D volumetric reconstructions increased significantly during the presence of OA versus the absence of OA (p<0.01). AHI diminished significantly during the presence of OA (p<0.01). Oral therapy was effective for treating mild and moderate OSA. Conclusion: The advantage of a 3D evaluation of the upper airway during OA therapy is the accurate visual confirmation of morphological changes in each region of the upper airway and it could increase the compliance and motivation of the patients for the treatment. OSAS treatment methods included surgery, nasal continuous positive airway pressure (NCPAP), weight reduction, drug therapy and, in the mild and moderate OSA, the use of oral appliances. CBCT is useful to detect morphological changes od upper airways, by a 3D evaluation analysis during oral devices use. The management of the obstructive sleep apnea syndrome could be challenging. The treatment recommendations should be proposed by a multidisciplinary approach, that involves different specialists: otorhinolaryngologists surgeons, neurologists, sleep doctors and dentists
Surgery-first approach vs conventional orthodontic surgical treatment of dental and skeletal malocclusions
No full textAim: The aim of this study is to assess the benefits, limits and indications of surgery first approach (SFA) and compare main features of convectional combined approach.
Methods: Conventional combined surgical and orthodontic treatment of dentofacial deformity includes a prolonged period of presurgical orthodontic therapy (12-18 months) and often excessively long postsurgical orthodontic period resulting in an extended treatment time (2–3 years) which may be exhaustive for the patient to sustain. In addition, the visual impact of unpleasant fixed appliances and often worsening or aggravation of the existing deformity at dental and soft-tissue level during the pretreatment period, resulting from decompensatory tooth movements may lead to considerable patient dissatisfaction and may lead the patient to give up treatment. The surgery-first approach has been introduced to compensate the previously mentioned untoward effects of conventional orthognathic surgery (prolonged treatment period, unsightly long-term braces visibility, worsened facial deformity) yet, produce equally excellent results if carefully selected and appropriately managed.
Results: Following orthognathic surgery, a period of rapid metabolic activity within tissues is known as the regional acceleratory phenomenon (RAP). By performing surgery first, RAP can be exploited to facilitate efficient orthodontic treatment. This phenomenon is believed to be a key factor in the notable reduction in treatment duration using SFA. The phenomenon of regional acceleration could be utilized to enhance faster tooth movement which considerably reduces treatment duration and may also present difficulties associated with tooth movement. It is very important that the orthodontist and surgeon involved in SFA should closely not only follow the orthognathic surgery principles but also understand the limitations of orthodontic teeth movement and the surgery-first approach.
Conclusion: The surgery-first approach has improved rapidly since its introduction. The indication for the surgery-first approach has widened with technical advancement. However, the limitations of this approach should be considered. Team approach between surgeons and orthodontists is a vital component for successful treatment. The surgery-first approach was developed to improve patient care. The first indication for the surgery-first approach should be patient demand. Patients, generally, do not like preoperative orthodontic treatment. The primary aim of preoperative orthodontics is decompensation and occlusal stability after surgery. The surgery-first approach is basically a team approach between orthodontists and surgeons. Any surgery without a preoperative consultation between surgeons and orthodontists is inadvisable. Based on this consultation, the patients who do not require extensive preoperative orthodontics are indicated for the surgery-first approach. The indications for the surgery-first patient are minimal crowding in the anterior teeth, favorable curve of Spee, and normal range of angle between the basal bone to upper and lower incisors
Per un riesame della tradizione del "Tristan" in prosa, con nuove osservazioni sul ms. Paris, BnF, fr. 756-757
No full textL'intervento vuole mettere a confronto le tre edizioni del testo del Roman de Tristan in prosa (Curtis, Ménard, Blanchard) e suggerire nuove linee di indagine, per rivedere soprattutto la questione dei rapporti tra versione cosiddetta "breve" e versione "lunga". Contiene un elenco completo e aggiornato delle testiominianze manoscritte dell'opera, con un supplemento di dati codicologici, iconografici, testuali e linguistici sul ms. fr. 756-757 della BnF di Parigi
Il romanzo in prosa tra Francia e Italia: stato della questione e nuovi percorsi di lavoro : Il Roman de Tristan in prosa e l'Italia : questioni aperte
No full textThe paper collects discussants' contributions at the Round Table titled "Il romanzo in prosa tra Francia e Italia: stato della questione e nuovi percorsi di lavoro" (International Arthurian Society-Italian Branch Meeting, Università degli studi di Pisa, 21-22 ottobre 2010). Tagliani's contribution, about 'Il roman de Tristan in prosa e l'Italia: questioni aperte', is at pp. 231-236, and focuses critical problems related to the reception of the Arthurian romances in Old French prose in Italy in the fourteenth century, from the point of view of literary history, philology, linguistics and codicological philology
Surgical-orthodontic disimpaction in Juvenile Arthritis patients
No full textAim: The purpose of this work is to evaluate the possibility of treating orthodontic patients with Juvenile Idiopathic Arthritis (JIA) with the same therapeutic aids in use for healthy patients in maximum security and precautions.
Materials and Methods: The inclusion of the teeth is a frequent clinical occurrence with different prevalence of the two dental arches. The finding of this clinical aspect is generated by the fact that dental eruption is a complex series of genetically controlled events and during this period many pathogenic noxae can interfere with the normal developmental process.
Results: The surgical treatment involves both the prevention of the clinical retention consequences and the possible recovery of the impacted element for orthodontic purposes.
The choice of therapy is sometimes complicated by possible systemic diseases that involve the orofacial district. We present some clinical cases with surgical and orthodontic problems with dental retentions. Also highlighted is the treatment protocol adopted for these young patients affected by rare diseases such as systemic JIA.
Conclusion: Following a particular diagnostic and therapeutic protocol at an interdisciplinary level, in these dental patients, it is possible to recover impacted dental elements in these JIA patients
Neuromuscular assessment after orthognathic surgery of skeletal dental Class III malocclusions
No full textAim: This study investigates retrospectively if the initial electromyography (EMG) status of patients who underwent orthognathic surgery correlates with the extent of postsurgical EMG functional recovery.
Materials and Methods: Clinical records concerning 20 patients who underwent Le Fort I and/or sagittal osteotomy of the mandibular ramus to correct skeletal dental class III malocclusions were retrieved and presurgical and postsurgical EMG data were analysed and compared. Postsurgical EMG recovery was compared with that of a set of healthy, not surgically treated class I patients, with no sign of disorders affecting the effect of six independent variables on muscular recovery was investigated by means of correlation analysis.
Results and Conclusions: A significant increase of the average EMG activity after orthognathic corrective surgery was observed (P=0.01). The postsurgical increase of EMG values showed a negative correlation trend with those collected before surgery (r=-0.38, clenching on teeth; r=-0.33, clenching on cotton rolls). None of the independent variables had any effect on the postsurgical outcome. Orthognathic surgery improves the muscular activity of patients who present skeletal dental class III malocclusions. This improvement can be objectively assessed with EMG measurements. Patients who benefit more from orthognathic surgery seem to be those displaying the lowest presurgical EMG activity
Orofacial pain and craniomandibular disorders aggravation during the COVID-19 pandemic
No full textAim: The effects of COVID-19 pandemic are capable of influencing oral and maxillofacial conditions, such as temporomandibular disorders (TMD) and bruxism, which could further aggravate the orofacial pain. This study aimed to evaluate the effect of the current pandemic on the possible prevalence and worsening of TMD and bruxism symptoms, in italian patients.
Materials and methods: Studies were conducted as cross-sectional online surveys using similar anonymous questionnaires during the lockdown. The authors obtained 800 complete responses. In the first step, data concerning TMDs, and bruxism were compared. In the second step, univariate analyses (Chi2) were performed to investigate the effects of anxiety, depression, and personal concerns of the Coronavirus pandemic, on the symptoms of TMD, and bruxism symptoms and their possible aggravation. Finally, multivariate analyses were carried out to identify the study variables that had a predictive value on TMD, bruxism, and symptom aggravation.
Results and Conclusions: The results showed that the Coronavirus pandemic has caused significant adverse effects on the psychoemotional status. resulting in the intensification of their bruxism and TMD symptoms. The aggravation of the psychoemotional status caused by the Coronavirus pandemic can result in bruxism and TMD symptoms intensification and thus lead to increased orofacial pain
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