| Title |
Optical properties of orthodontic aligners—spectrophotometry analysis of three types before and after aging
|
|---|---|
| Published in |
Progress in Orthodontics, November 2015
|
| DOI | 10.1186/s40510-015-0111-z |
| Pubmed ID | |
| Authors |
Luca Lombardo, Angela Arreghini, Roberta Maccarrone, Anna Bianchi, Santo Scalia, Giuseppe Siciliani |
| Abstract |
The aim was to assess and compare absorbance and transmittance values of three types of clear orthodontic aligners before and after two cycles of in vitro aging. Nine samples of orthodontic aligners from three different manufacturers (Invisalign, Align Technology, Santa Clara, CA, USA; All-In, Micerium, Avegno, GE, Italy; F22 Aligner, Sweden & Martina, Due Carrare, PD, Italy) were selected, and each sample was subjected to spectrophotometry analysis of both its transmittance and absorbance a total of 27 times. Samples were subsequently aged in vitro at a constant temperature in artificial saliva supplemented with food colouring for two cycles of 14 days each. The spectrophotometry protocol was then repeated, and the resulting data were analysed and compared by means of ANOVA (p < 0.05). All types of aligners tested yielded lower transmittance and higher absorbance values after aging, but the difference was not significant in any case. That being said, the F22 aligners were found to be most transparent, both before and after aging, followed by Invisalign and All-In, and these differences were statistically significant. Commercial aligners possess significantly different optical, and therefore aesthetic, properties, both as delivered and following aging. |
X Demographics
The data shown below were collected from the profiles of 4 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| South Africa | 1 | 25% |
| Unknown | 3 | 75% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 3 | 75% |
| Science communicators (journalists, bloggers, editors) | 1 | 25% |
Mendeley readers
The data shown below were compiled from readership statistics for 151 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Brazil | 1 | <1% |
| Unknown | 150 | 99% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Master | 21 | 14% |
| Student > Ph. D. Student | 14 | 9% |
| Student > Postgraduate | 13 | 9% |
| Student > Doctoral Student | 8 | 5% |
| Student > Bachelor | 8 | 5% |
| Other | 22 | 15% |
| Unknown | 65 | 43% |
| Readers by discipline | Count | As % |
|---|---|---|
| Medicine and Dentistry | 62 | 41% |
| Biochemistry, Genetics and Molecular Biology | 4 | 3% |
| Materials Science | 3 | 2% |
| Unspecified | 2 | 1% |
| Nursing and Health Professions | 2 | 1% |
| Other | 7 | 5% |
| Unknown | 71 | 47% |
Attention Score in Context
This research output has an Altmetric Attention Score of 3. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 18 January 2016.
All research outputs
#14,276,163
of 25,371,288 outputs
Outputs from Progress in Orthodontics
#66
of 255 outputs
Outputs of similar age
#183,459
of 392,460 outputs
Outputs of similar age from Progress in Orthodontics
#2
of 7 outputs
Altmetric has tracked 25,371,288 research outputs across all sources so far. This one is in the 43rd percentile – i.e., 43% of other outputs scored the same or lower than it.
So far Altmetric has tracked 255 research outputs from this source. They receive a mean Attention Score of 3.0. This one has gotten more attention than average, scoring higher than 73% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 392,460 tracked outputs that were published within six weeks on either side of this one in any source. This one has gotten more attention than average, scoring higher than 52% of its contemporaries.
We're also able to compare this research output to 7 others from the same source and published within six weeks on either side of this one. This one has scored higher than 5 of them.