1,721,133 research outputs found
Changes in periodontal ligament (PDL) by orthodontic forces: a micro-raman analysis of amide I and lipid contribution.
No full text
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
Orthopaedic treatment efficiency in skeletal Class III malocclusions in young patients: RME-face mask versus TSME
No full textAIM:
To cephalometrically compare the skeletal vertical and sagittal effects of TSME with those of RME protraction facemask therapy in Class III patients.
MATERIALS AND METHODS:
The sample of this retrospective study included 104 patients (53 females, 51 males) with age ranging from 5 to 9 years, presenting a skeletal Class III relationship: 52 were treated with transverse sagittal maxillary expander (TSME) appliance (Group 1) and 52 with Hyrax rapid maxillary expander/facemask (RME/FM, Group 2). For each patient a lateral cephalogram was obtained before treatment (T0) and at the end of the retention period (T1). Changes in the two groups during the observation period were calculated, compared and statistically analysed with t-test.
RESULTS:
TSME can produce skeletal changes and dento-alveolar modifications. RME in association with protraction facemask showed that after treatment the maxilla was moved significantly forward. The correction of the ANB angle was due to a change in mandibular position during treatment which showed a backward and downward rotation.
CONCLUSION:
Both devices were effective in the treatment of subjects with skeletal Class III due to maxillary retrusion
Comparisons of two protocols for early treatment of anterior open bite
No full textAim: The purpose of this study was to compare the outcomes of the treatment with the quadhelix/ crib (Q-H/C) appliance with those of a combination of transpalatal arch, high-pull headgear, and lip bumper (TPA/HG/LB) in growing patients with anterior open bite malocclusion. Methods: The TPA/HG/LB sample consisted of 22 subjects, 16 girls and 6 boys (mean age 7.5 ± 1.4 years at the start of treatment, T1, and 8.7 ± 1.5 years at the end of active treatment, T2). The Q-H/C sample consisted of 28 subjects, 17 girls and 11 boys (mean age 8.2 ± 1.3 years at T1, and 8.7 ± 1.6 years at T2). Both treated groups were compared with a control group of 20 untreated subjects matched for dentoskeletal disharmony and observation interval. The changes from T2 to T1 between the three groups were compared with the analysis of variance. Results: Both TPA/HG/LB and Q-H/C groups exhibited greater reduction of the palatal plane to mandibular plane angle (-1.7° and -1.9°, respectively) and a significantly greater increase in overbite (2.2 and 2.3 mm, respectively) with respect to controls. Conclusions: Q-H/C and TPA/HG/LB protocols were equally effective in correcting the anterior open bite
Orthodontic treatment of malocclusion and its impact on oral health-related quality of life
No full textObjectives: Malocclusion, though not life-threatening, has vast impact on individual’s social interactions and self-esteem. Therefore, the aim of the current study was to assess whether orthodontic treatment of adolescents with malocclusion had any association with their oral health-related quality of life (OHRQoL). Methods: The subjects for this study were recruited at a state-funded university clinic. Data were collected from 100 participants aged 17 to 21 with moderate to severe malocclusion. Experimental group comprised of 50 subjects who were in the retention phase of their orthodontic treatment and the control group comprised of 50 untreated subjects. The shortened version of the Oral Health Impacts Profile (OHIP-14) as used to assess the subjects’ oral health-related impact. T-test, Kruskal-Wallis, and Mann Whitney tests were used to analyze the data and p-value was set at P < 0.05. Results: In general, oral health-related quality of life of all subjects significantly improved after orthodontic treatment. (p<0.001) Subjects with moderate malocclusion showed better improvement than severe malocclusion subjects. (P<0.001) Conclusion: This study showed that oral health-related quality of life improves with the treatment of malocclusion
Cap: Biomarkers of Periodontal Tissue Remodeling during Orthodontic Tooth Movement in Mice and Men: Overview and Clinical Relevance
No full textThe frequency of dental anomalies in subjects with cleft lip and palate
No full textObjectives . The purpose of this study was to
investigate dental abnormalities in children
with cleft lip and palate (CLP) in order to identify
the most prevalent anomalies and the teeth
most frequently affected.
Materials and methods . We analyzed orthopanoramics
X-rays (OPT), computed tomography
Dental Scans, clinical records, and dental
casts from 18 consecutive patients (10 boys,
8 girls; mean age 11.2 years, range: 6 to 18),
with CLP (complete or incomplete, mono- or
bilateral) and recorded the presence of the
following anomalies: supernumerary teeth,
agenesis, shape and size anomalies, ectopic
and dystopic eruptions, rotations and retained
teeth.
Results . The most frequent abnormalities
were: agenesis (prevalence: 22.5%), ectopic and
dystopic eruption (19.3%), rotations (17.7%),
shape and size anomalies (16.1%), and retained
teeth (14.5%). The most frequently affected
teeth were the lateral (45.1%) and central
incisors (32.2%), the cuspids (14.5%), and the
second bicuspid (6.4%). Lateral incisors were
usually missing (39.2%) or retained (21.4%),
while central incisors were more often rotated
(50%) or deformed (25%). The cuspids were
ectopic (66.6%) or retained (23%), while the
bicuspids were missing (25%), retained (25%),
or presented alterations in number (25%) or
shape/size (25%)
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