1,720,960 research outputs found
The Impact of Professional Oral Hygiene in Orthognathic Surgery
No full textIntroduction: Oral hygiene represents a fundamental element with regard to outcomes in oral and maxillofacial surgery. Both basic hygiene that the patient must perform daily at home and obviously professional hygiene aimed at preventing any complications in the surgical field. Methods: Patients undergoing orthognathic surgery in our Department of Maxillofacial Surgery in Ancona, in a total number of 137 in the period studied (2016-2021), were divided into 2 groups: period 1, (2016-2018) and period 2 (2019-2021). The division into 2 groups derives from the establishment of a professional oral hygiene protocol established starting from January 2019 and put into practice by dental hygienists. The protocol consists of preoperative counseling and above all very precise instructions in the postoperative so as to optimize the oral hygiene process, assist in the best possible wound healing and reduce possible postoperative complications. Anamnestic, cephalometric data, measurements of the distances between certain landmarks for the evaluation of facial edema, patient-referred pain, accurate intraoral and extraoral physical examination both pre and postoperative, and complications were collected for each patient. Conclusions: The main goal of the study authors set is to evaluate the effective impact of professional oral hygiene in the pre and postoperative management of patients undergoing orthognathic surgery, taking into account parameters, such as facial edema and pain, and using evaluation scales, making a comparison with the data reported in the 3 years before and after the establishment of the protocol applied by the authors
Oversize complex odontoma of maxilla in a young girl
No full textOversize complex odontoma of maxilla in a young gir
Reconstruction of oral mucosal defects with regenerative dermal matrix after T1-T2 squamocellular carcinoma resection
Full text linkObjective: Resection of tumors of oral cavity usually causes short- or long-term sequelae such as chewing, speech and swallowing impairment. To preserve this function it is necessary to maintain the lining of the oral cavity, the mobility and sensitivity of the tongue. Reconstructive options for oral mucosal defects resulting from tumor resection included primary closure, mucosal and skin grafts, pedicle and microvascular free flaps, and dermal matrix. Study design: Retrospective study on patients undergoing reconstruction of intraoral defects, after removal of T1, T2 malignant tumors, by placement of bilayer dermal matrix. Methods: From 2021 to 2022, 47 patients with oral mucosa defects after removal of squamous cell carcinoma were treated. All patients were affected by a T1-T2 squamous cell carcinoma. For each patient, data were collected regarding the site of the disease, the initial staging, the size of the surgical defect, the complications and the outcome months after the operation. Results: In all treated cases the surgical defect involved the mucosa of the cheek, the oral floor or the tongue with an average size of 5.45cm2. Patients who underwent this type of reconstruction benefited from excellent healing of intraoral wounds and good restoration of oral function 6 months after surgery. Out of the total number of patients, membrane attachment failure was reported in only two cases. Conclusion: As emerges from the data reported in our study, the dermal matrix represents a valid alternative in oncological reconstructive surgery for small/medium-sized intraoral mucosal defects because it allows re-epithelialization of the woun
Influence of the Covid-19 pandemic on temporo-mandibular joint disorders
No full textOBJECTIVES: The year 2020 went down in history due to the outbreak of the Covid-19 pandemic which radically changed global health. The Italian population carries with it the stigmata of this period full of fear. In correlation with the increase in stress, increases in tem poro-mandibular joint disorders (TMD) have also been found, particularly in those patients with a marked psycho-emotional component. The etiology of TMD is multifactorial, in fact temporo-mandibular joint disorders and bruxism are often associated with psycho-emotional stress, such as depression, anxiety, stress. The relationship between TMD and pain significantly affects daily activities and quality of life. The same problems can be seen in both night and daytime bruxism, this could be explained by greater muscle contraction as a defense reaction and by bruxism as an unconscious response to the period of greater stress. The main symptoms of TMD are: jaw pain, preauricular pain, toothache (without dental origin), joint pain, headache and mandibular functional limitation. The aim of this study is to determine what emerged from a series of patient visits, carried out at the Maxillo-Facial Surgery Department of the Ancona Hospital, suffering from TMD, bruxism and orofacial pain. MATERIALS AND METHODS: The period analyzed goes from 03/09/2020 to 03/09/2022, taking into consideration maxilla-facial surgical visits for pain or disorders of the temporo-mandibular joint. In the department under study, at the Ancona Hospital, there has been an increase in pathologies and/or disorders of the temporo-mandibular joint in the post-lockdown period due to Covid-19. The inclusion criteria applied were: patients visited at the Maxillo-Facial Surgery Department of Ancona for TMD; patients diagnosed with TMD and evaluated with DC-TMD after the Covid period. All patients underwent a series of tests and questionnaires to evaluate, with numerical parameters, a series of aspects relating to temporomandibular joint (TMJ) disorders, sleep quality and psycho-social status. The assessment systems used are: The Depression, Anxiety, and Stress Scale (DASS-21), Pittsburgh Sleep Quality Index (PSQI) 24 and self-report to evaluate bruxism. The authors administered these tests to patients both during the first visit and after any pharmacological, rehabilitation and surgical therapies. In the patients examined, the diagnostic criteria for TMD (DC/TMD) were used to determine the extent of joint disorders. RESULTS The authors reported signs and symptoms, diagnosis and management of patients suffering from psychological stress crisis and evaluated the immediate risks for health and social isolation. TMJ pathology obviously includes occlusal, dental and degenerative processes factors among the etiological bases. Moreover, psycho-emotional disturbances are factors that can potentially have a relevant weight on the TMD. CONCLUSIONS: The main goal of this study was to evaluate the psychological impact of the recent Covid-19 pandemic on subjects with TMD; the authors reported an increase in stress in the general population, and in diagnoses of anxiety-depressive related TMD in post-lockdown period
Rapid prototyping: Applications in oral and maxillofacial surgery
Full text linkThis article documents four mandibular reconstructions performed using free fibula flaps. CT scan DICOM (Digital Imaging and COmmunication in Medicine) files were obtained in order to print stereolithographic models of the mandible, and in one case cutting guides for fibular osteotomies. One case study details the treatment a cancer recurrence on a right emimandibulectomy. Because of a lack of access to previous CT scans, the left part of the mandible was mirrored to obtain an accurate 3D model. In one case, due to the young age of the woman, a double barrel fibula flap was used. All cases resulted in satisfactory chewing function and aesthetic outcome, with no flap failures. The report concludes that Virtual Planning and Rapid Prototyping are helpful as they reduce costs and intraoperative times while simultaneously improving surgical precision
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Outcome of Facial Nerve Integrity After Parotid Gland Surgery With and Without Intraoperative Monitoring: A Ten-Year Retrospective Study
Full text linkBackground: Facial nerve injury is one of the most concerning complications of parotid gland surgery, with temporary and permanent dysfunction rates varying widely in the literature. This study aimed to identify factors associated with facial nerve injury during surgery for benign parotid tumors and assess the protective efficacy of intraoperative nerve monitoring (NIM) in preventing nerve injury. Methods: This retrospective study analyzed 329 patients who underwent parotid gland surgery between 2010 and 2023. Data collected included patient demographics, tumor characteristics (size, location, histology), surgical parameters (operation time, NIM usage), and postoperative nerve function evaluated using a modified House–Brackmann scale. Descriptive and inferential statistical analyses, including Chi-square tests and logistic regression, were employed to identify predictors of facial nerve outcomes. Results: Facial nerve injury occurred in 5.2% of patients, comprising 4.6% temporary and 0.6% permanent damage. Tumors located in the deep and inferior lobes significantly increased the risk of facial paralysis/palsy (p = 0.035), while tumor size and histology showed no significant associations. Using NIM significantly reduced the risk of facial nerve injury (p < 0.05; OR: 0.35, 95% CI: 0.25–0.50). Age was also identified as a significant predictor of nerve dysfunction (p < 0.05). Conclusions: The findings emphasize the importance of NIM in mitigating facial nerve injury, especially in anatomically complex tumor locations. Tailored surgical approaches based on tumor location and patient-specific factors, combined with the routine use of NIM, are recommended to optimize nerve preservation and improve postoperative outcomes
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