1,720,976 research outputs found
Prevalenza delle diverse forme di disordini temporomandibolari secondo i criteri RDC/TMD.
No full textDevelopment of A Nano-Apatite Based Composite Sealer for Endodontic Root Canal Filling
Get PDFRecently, endodontic sealers based on injectable bioactive materials were proposed to improve the filling of anatomical irregularities during root canal obturation. In this context, this preliminary work investigated the possibility of realizing a new calcium phosphate-based composite sealer for root canal filling with an optimized composition on setting kinetics and dentin tubules occlusion. Several calcium phosphate/liquid phase mixtures were initially evaluated for their workability, finding two suitable formulations. Both of them contained 66 wt.% of a nano-apatite-based cement (solid powdered phase). The liquid phase (34 wt.%) comprised 13.6% propanediol and 20.4% PEG 1000 (formulation 1), and formulation 2 comprised 27.2% glycerin and 6.8% PEG 200 (formulation 2). Then, these formulations were tested by means of permeability measurements and observation by scanning electron microscopy of treated model dentin samples. Both formulations succeeded in occluding dentinal tubules: the first one was able to create a full-bodied layer on dentin surface and, moreover, to resist, at least to a large extent, against citric acid attack. The second one showed a lower effectiveness after citric acid exposure. The composite compound that better satisfied the overall required characteristics of use, workability and sealing capacity was formulation 1
Hygienic maintenance in patients with maxillae atrophy and in oncological patients with maxillary resection rehabilitated with zygomatic implants: A nested monocentric prospective cohort study
Get PDFObjective: To assess peri-implant soft tissues condition, comparing clinical parameters of implants placed in patients with atrophic upper jaws and patients who underwent maxillary resection for oncological reasons.Background: Zygomatic implants (ZIs) in oncologic patients could be affected by more complications compared to implants placed in atrophic maxillae. The soft tissue condition is an essential requirement for implant success, but few studies have investigated this topic.Methods: A nested monocentric prospective parallel cohort (atrophic vs. oncological patients) study was performed. Clinical visits and professional hygiene sessions were performed every three months, and bleeding on probing (BOP), probing pocket depth (PPD), gingival index (GI), plaque index (PI) and implant mobility were recorded by a blind outcome assessor.Results: In total, 77 ZIs placed in 21 patients were evaluated: 54 (70.1%) ZIs were inserted in patients belonging to the atrophic cohort (PAM) and 23 (29.9%) ZIs in the oncologic cohort (OP). The probability of having BOP at the considered mean follow-up (27 months) was 24.8% (95% CI 19.0-31.9) for PAM and 22.9% (95% CI 15.1-33.9) OP. The mean PPD values were 2.78 +/- 1.28 (range 1-8) in PAM and 2.91 +/- 1.98 (range 0-10) in OP. None of the implants showed mobility. No associations between group belongingness and the entity of PPD, PI, GI and the risk of BOP were found, adjusting for the considered confounding factors (age, smoking and implant position).Conclusions: Under a strict supportive hygiene therapy protocol ZIs in oncologic patients showed similar peri-implant tissue conditions to that of patients with maxillary atrophy
Relazione tra sintomatologia otoiatrica e disordini temporomandibolari: attuali orientamenti.
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Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Diagnosis of temporomandibular disorders according to RDC/TMD Axis I findings. A multicenter Italian study
No full textThe aim of the present study was to evaluate the prevalence of the different
Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) Axis I
types of temporomandibular disorders (TMD) in a population of subjects seeking
for TMD treatment at 2 University Departments in Italy and to compare it with
data from similar studies in the literature, in order to assess the usefulness of
the RDC/TMD classification system as a tool for epidemiological data gathering
and multicenter and cross-cultural comparison. METHODS: A total of 210
consecutive patients seeking for TMD treatment at the Section of Prosthetic
Dentistry, Department of Neuroscience, University of Pisa, Italy, and 109
consecutive patients seeking treatment at the Section of Prosthetic Dentistry and
Temporo-mandibular Disorders, University of Pavia, Italy, were assessed using
RDC/TMD. RESULTS: Only 181 of the patients referring to the University of Pisa
and 104 of those referring to the University of Pavia satisfied the criteria for
inclusion. Findings from the 2 study populations were very similar. Mean age of
the patients was 40 years, with a female:male ratio of 3.5:1 (222 females, 77.9%;
63 males, 22.1%). The prevalence of RDC/TMD Axis I diagnoses was 50.2% (143/285)
for Group I disorders (muscle disorders), 38.6% (110/285) for Group II disorders
(disc displacement), and 50.2% (143/285) for Group III disorders (arthralgia,
osteoarthritis, osteoarthrosis). CONCLUSION: Results from the present
investigation have confirmed the usefulness of the RDC/TMD classification system
for research purposes and for data gathering in cross-cultural and multicenter
comparisons
Variations on the Author
Get PDF“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
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