1,720,958 research outputs found
CORONOID HYPERPLASIA IN THE PAEDIATRIC AGE GROUP
No full textCoronoid process enlargement may be unilateral
or bilateral. Bilateral hyperplasia of the coronoid
process of the mandible is defined as an abnormal elongation
of the coronoid process, formed of histologically
normal bone.
The main clinical finding is a progressive, painless difficulty
in opening the mouth, due to contact with the temporal
surface of the zygomatic bone or medial surface of the
zygomatic arch.
The aetiology of the complaint is unknown, although
several theories have been postulated, including hyperactivity
of the temporal muscle, causing reactive elongation
of the coronoid process, dysfunction of the temporomandibular
joint caused by chronic disc displacement, which
would be related with cases of unilateral hyperplasia and
is mentioned as one of the causes of Jacob’s disease,
endocrine stimuli, traumatism and even genetic and family
factors
Endoscopy in the removal of frontal osteomas [L'endoscopia nell'asportazione di osteomi frontali]
No full textOsteomas are benign bone lesions, characterized by bone escrescences, usually arising in membranous bones. They appear to be well circumscribed, localized, sessile or peduncolated. Their origin is clearly not neoplastic, but traumatic. A 3:1 female to male ratio has been noted; most osteomas appear as a painless, slowly enlarging, hard lump, and quite often, patients seek a solution for cosmesis only. Osteomas have a predilection for young adults, most commonly from the second to fifth decadee, so patients have a keen interst in getting a good cosmetic result. They can be completely excised by way of a direct incision of the lesion, but this inevitably leaves a scar. Aesthetic considerations are important features in the craniomaxillofacial region. Expecially for patients who are not willing tgo accept the risk of a prominent forehead scar. Endoscopic excision is minimally invasive and contributes to an improved aesthetic appearance. The advantages of forehead endoscopy are multiple: reduces postoperative pain, Shortens hospital stays, and diminishes periods of disability. Our purpose is to describe the clinical experience with the removal of forehead masses in five patients
Up-date in genioplaty strategies
No full textThe chin is an important structure of the
maxillofacial complex, principally in harmony and esthetic
proportion into various areas of the face. In general,
a retruded chin is associated with femininity; a prominent
chin with masculinity. The chin is one of the movable
physical characteristics of the face and may have been
useful to display aggression and strength in more primitive
times. The stronger mandible and more protuberant chin
are distinctive features of the male face.
Therefore, genioplasty is an important procedure particularly
in male aesthetic skeletal surgery.
The chin is one of most prominent and visible structures of
the face, and the surgical modifications should pay attention
in alterations in dentofacial deformitie
Adenocarcinoma of the lacrimal gland: resection and reconstructive surgery
No full textMalignant epithelial tumors of the lacrimal gland are rare ( less than 5% of all orbital lesions ). The most frequent epithelial tumor is primary adenoid cystic carcinoma followed by pleomorphic carcinoma (1,2). Early metastases tend to develop in these tumors, and there is less chance of survival compared with other malignant neoplasms in these areas, such as squamous cell carcinoma and mucoepidermoid tumors (3,4). The introduction of new surgical techniques (5,6), as well as new diagnostic and treatment methods (7,8), has increased the chance of long-term survival of patients with malignant neoplasms in the orbital region. The case of a patient with adenocarcinoma of the lacrimal gland treated surgically with transcranial and transpalpebral orbital resection is described
Bisphosphonates osteonecrosis of the mandible with 3.8 in total bony inclusion: a clinical case [Osteonecrosi da bifosfonati della mandibola con disodontiasi del 3.8.]
No full textI bifosfonati sono una classe di farmaci derivati da analoghi strutturali del pirofosfato
inorganico e hanno la funzione di regolatori endogeni della mineralizzazione
ossea. L’Osteonecrosi da Bifosfonati dei Mascellari (OBM) è una patologia infettiva e
necrotizzante a carattere progressivo con scarsa tendenza alla guarigione.
Gli Autori descrivono un caso clinico di OBM con 3.8 in inclusione ossea profonda,
localizzato a livello del bordo dell’angolo mandibolare. In considerazione del tipo
di patologia associata è stato evitato l’approccio trans-orale con le relative possibili
complicanze di tipo infettivo che avrebbe, inoltre, determinato una distruzione ossea
importante tale da aumentare il rischio di frattura patologica della mandibola.
L’approccio è stato per via esterna trans-cutanea e ha permesso l’estrazione del dente
in inclusione ossea in modo diretto. La solidità mandibolare è stata mantenuta con
l’applicazione preventiva di una placca in titanio. A distanza di 12 mesi dall’intervento
la paziente è asintomatica e non presenta alcun segno di patologia residuaBisphosphonate are a class of drugs derived from pyrophosphate which are endogenous
regulators of bone mineralization. Bisphosphonates osteonecrosis is an infectious and
necrotizing progressive disesase with a low tendency to process of healing.
The Authors describe a clinical case of bisphosphonates osteonecrosis of the mandible with
3.8 in total bony inclusion, deep located at the edge of the mandibular angle.
Considering the nature of associated pathology, the trans-oral approach has been avoided
in order to prevent infectious complications. The endoral approach would have also
resulted in significant bony destruction, increasing the risk of pathologic fracture of the
mandible. The external trans-cutaneus route, allowed the direct extraction of the tooth
including the surrounding bone. The jaw strength was maintained by the application of a
titanium plate. 12 months after surgery, the patient is asymptomatic and signs of residual
disease are not present
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
- …
