1,720,963 research outputs found
Applicazione dei criteri diagnostici di ricerca (RDC- asse Ie II) in uno studio epidemiologico sui disordini temporo-mandibolari in un campione di popolazione aquilana
Gummy smile: clinical parameters useful for diagnosis and therapeutical approach
In the analysis of the characteristics of a pleasant smile, a gummy smile has negative components, which most
affect the esthetics of non-verbal communication. For this purpose a proposed classification based upon
etiopathogenetic criteria as useful indications for a therapeutical approach is given.The nature of a high smile
line can be: dento-gingival, connected to an abnormal dental eruption, which is revealed by a short clinic
crown; muscular, caused by an hyperactivity of the elevator muscle of the upper lip; dento-alveolar (skeletal),
due to an excessive protuberance or vertical growth of the jawbone (maxillary); lastly, a mixed nature, in the
presence of more than one of the above described factors.The diagnosis of gummy smile must be precocious
and based, with reference to specific parameters, upon a careful analysis of the etiopathogenetic factors and
the degree of seriousness of the alteration. A correct treatment plan must contemplate the possibility of an
orthognatodontic, orthopedic and/or surgical therapeutic resolution considering the seriousness and
complexity of the gums exposures (high smile line) in connection with the age of the subject
Relationship between mandibular deviation and ocular convergence
Recent studies have confirmed the relationship between head posture, mandibular position and visual
focusing. A case-controlled study was conducted to assess the occurrence of ocular convergence
defects between subjects with functional mandibular latero-deviation and healthy subjects in pediatric
age. Sixty subjects (the study group) presented mandibular latero-deviation classified as functional
according to the use of a clinical examination and frontal and basal tele-radiography. Sixty subjects
without functional mandibular laterodeviation (control group) were selected randomly from all
subjects seeking pediatric dental care and matched by gender and age to study group. All one hundred
and twenty subjects were submitted to orthoptic tests performed by the same operator. These results
seemed to confirm that in mandibular latero-deviation subjects ocular convergence defects occurred
in greater frequency than in controls underlining the importance of role of pediatric dentistry among
interdisciplinary cooperation
Going Beyond Counting First Authors in Author Co-citation Analysis
The 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
- …
