1,720,989 research outputs found
Il trattamento delle labiopalatoschisi. Parte seconda: osservazioni a lungo termine sulla crescita mandibolare
No full textNel presente studio vengono presi in considerazione i problemi relativi al controllo della crescita mandibolare
nei pazienti affetti da labiopalatoschisi monolaterale completa. Dopo un'attenta disamina della letteratura e
delle ipotesi formulate in proposito, gli autori, sulla scorta di osservazioni personali a lungo termine su pazienti in trattamento
ortodontico, pongono in evidenza alcuni elementi a loro giudizio qualificanti per la valutazione prognostica
in casi affetti da tale malformazione. Poiché la mandibola di questi pazienti non è direttamente coinvolta nella malformazione,
essa assume significato valutativo importante. In tal senso gli autori hanno voluto testare il significato della
categorizzazione auxologica secondo Petrovic in un gruppo di 29 pazienti con labiopalatoschisi monolaterale
completa, osservati per un periodo di tempo che varia dai 7 ai 13 anni, durante il quale i pazienti hanno subito varie
fasi del trattamento ortodontico. Per maggiore completezza dell'indagine, sono state anche eseguite le previsioni di
crescita derivanti dallo studio dei modelli in gesso degli stessi pazienti, secondo il Cross Bite Score di Huddart ed il
GOAL di Friede. L'identificazione della categoria di crescita ha dimostrato una notevole utilità, seppure vadano messe
in evidenza le differenze, rispetto ad una popolazione normale, derivanti dalla particolare situazione del mascellare
superiore
accrescimento dei mascellari nei casi di labiopalatoschisi: il punto di vista del chirurgo e dell'ortodentista
No full textE' ben noto che il pz affetto da labioschisi mono o bilaterale presenta due tipi di problematiche una connessa all'altra:interessati dalla schisi labiopalatina;
b) le conseguenze, funzionali ed estetiche, che
derivano, in seguito a tale malformazione, a carico
delle strutture molli e dure dei due terzi inferiori
della faccia e del processo di fonazione.
Compito quindi del terapeuta è di tenere sempre
in conto, anche in sede d'intervento precoce, non
solo l'obiettivo immediato di riparazione della
malformazione, ma anche gli esiti di un'alterata
crescita facciale conseguente alla schisi stessa od
agli eventuali interventi ricostruttivi.
A tale scopo gli autori ritengono importante
sottolineare che:
1. il chirurgo plastico agisca in modo tale da
non creare ostacoli per il conseguimento di un
adeguato accrescimento muscolo-scheletrico fin
dal primo intervento correttivo;
2. l'ortodontista intervenga precocemente non
solo al fine di favorire il ripristino della soluzione
di continuo, ma anche nello stimolare in maniera
oculata un idoneo e simmetrico sviluppo dei
mascellari, agendo non solo con meccaniche
ortodontiche attive ma anche con apparecchiature
funzionali. Queste ultime agirebbero sull'attacco
muscoloperiostale, influenzando opportunamente
la crescita, preparando e compensando la terapia
chirurgica
Il trattamento delle labiopalatoschisi: Prima parte: attualità nel coordinamento terapeutico.
No full textGli autori riferiscono il loro atteggiamento nel trattamento della labiopalatoschisi, maturato sulla base di una revisione critica della letteratura e dall'osservazione dei casi giunti alla loro osservazione. E' ben noto, infatti,
che il paziente affetto da LPS mono o bilaterale presenta due tipi di problematiche in relazione tra loro: da un lato
l'ipoplasia e/o la malposizione dei tessuti interessati alla schisi labiopalatina, dall'altra le conseguenze funzionali
ed estetiche che derivano in seguito alla dismorfia, a carico delle strutture dure e molli dei due terzi inferiori della
faccia. Compito del terapeuta è di tenere sempre in conto non solo l'obiettivo immediato di riparazione della
malformazione, ma anche gli esiti di un'alterata crescita facciale conseguente alla schisi stessa o agli eventuali
interventi ricostruttiv
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
What’s the quality of online orthodontic information?
No full textOBJECTIVES Given the widespread use of the Internet and today’s trend to search for medical information on the Net, it is plausible to assume that orthodontic or gnathological patients seek information on the web. However, since there is no limitation nor control over the upload of digital contents, it’s possible that laypeople come across untrue or unreliable information. This study aims to assess the quality of orthodontic and gnathological digital information that can be found online by Italian patients. MATERIALS AND METHODS Ten search phrases were written using Google Search Predictions, after deleting cookies and search history from the browser. Out of these phrases, the most significant ones were selected. Therefore, 6 different searches were conducted on Google. For each search, 10 websites were selected. The quality of information of each website was assessed using the DISCERN tool by two independent examiners. The quality of the websites was measured by calculating, by means of DISCERN, the following scores: mean overall score (PCM), mean reliability score (PAM), mean information score (PIM). The websites, categorized for each search, were then divided into 5 groups: very poor, poor, mediocre, good, and excellent information quality. Descriptive statistics was used to compare the quality of the information obtained by entering the six different search key words. RESULTS Less than 25% of the websites reached a “good” quality level. None of the selected websites was evaluated “very poor”, only 2 websites were “excellent”. The mean of PCM of the websites found with the research “tempo apparecchio per i denti” (“timing of braces for the teeth”) was the highest. The lowest PIM values were recorded for the websites found by typing “gnatologia” (“gnathology”). The reliability of the sources was low for all the searches carried out, and the highest PAM mean stands at 25.50/40. There is variability in the quality and reliability of contents available online, so those who are not in the sector may find it difficult to discern between valid sources and websites that report inaccurate, non-evidence-based or incomplete information. Unfortunately, patients would not receive an adequate level of information even if they selected only dental websites from those indexed on Google: in fact, the quality of information of dental web sites in Italian resulted to be gen erally mediocre. CONCLUSIONS The quality of orthodontic informa tion available online resulted to be mediocre. Patients who seek information on the web should be cautious in trusting what they find. It is advisable that health care providers post online only contents based on solid scientific evidence. Furthermore, clinicians and scientific societies should use the DISCERN tool as a guide to organize their digital publications and to check their quality before the upload. CLINICAL SIGNIFICANCE Orthodontists should place emphasis on the interview with the patient, in order to prevent misinformation and preserve patients’ health
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
Prevalence of malocclusion in Italian schoolchildren and orthodontic treatment need
Full text linkAim The aim of the study was to estimate the prevalence of malocclusion and the need for orthodontic treatment in a sample of 3,017 Italian schoolchildren. Materials and methods Study design: 1,375 males and 1,642 females, aged between 8 and 13 years, were visited in primary and secondary schools. Signs of malocclusion were registered according to an occlusal index by trained and calibrated operators. First the prevalence of malocclusion was calculated in accordance to a scale of need for orthodontic treatment (R.O.M.A. index), which considers both malocclusion signs and risk factors for worsening of malocclusion without any treatment and during craniofacial development. Then the distribution of the most frequent characteristics, signs and symptoms was evaluated both within each risk grade and in the basic sample. Results The overall percentage of children classified as 3, 4 and 5 grade accounted for 75.8% of the sample. The percentage of children classified as 4 and 5 grade are similar to those found in other European countries. The most frequent features found are poor oral hygiene, caries and early loss of deciduous teeth, deviation from full intercuspation, increased overbite and overjet. Conclusion This epidemiological research describes the current orthodontic treatment need in Italy in children with a late mixed dentition
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
- …
