The effect of orthodontic treatment on smile attractiveness: a systematic review.
Journal
Progress in orthodontics
ISSN: 2196-1042
Titre abrégé: Prog Orthod
Pays: Germany
ID NLM: 100936353
Informations de publication
Date de publication:
06 Feb 2023
06 Feb 2023
Historique:
received:
03
11
2022
accepted:
11
01
2023
entrez:
5
2
2023
pubmed:
6
2
2023
medline:
8
2
2023
Statut:
epublish
Résumé
Smile attractiveness is a primary factor for patients to seek orthodontic treatment, however, there is yet no systematic evaluation of this topic in the literature. To assess the current evidence on the effect of orthodontic treatment on smile attractiveness. Seven electronic databases (MEDLINE, Cochrane Library, Virtual Health Library, SCOPUS, Web of Science, Google Scholar and Embase) were searched on 14 September 2022. Studies evaluating smile attractiveness before and after orthodontic treatment or only after completion of orthodontic treatment. Extracted data included study design and setting, sample size and demographics, malocclusion type, treatment modality and method for outcome assessment. Risk of bias was assessed with the ROBINS-I tool for non-randomised studies. Random-effects meta-analyses of mean differences and their 95% confidence intervals (CIs) were planned a priori. After elimination of duplicate studies, data extraction and risk of bias assessment according to the Cochrane guidelines, an evaluation of the overall evidence was performed. The included studies were evaluated based on the characteristics of their study and control groups and based on their main research question. Also, all outcome measures were standardized into a common assessment scale (0-100), in order to obtain more easily interpretable results. Ten studies were included in this review, nine of which were assessed as being at serious risk of bias and one at moderate risk of bias. The large heterogeneity between the included studies did not allow for a meta-analysis. Orthodontic treatment has a moderately positive effect on smile attractiveness. When compared to no treatment, orthodontic treatment with premolar extractions improves smile attractiveness by 22%. Also, surgical correction of Class III cases increases smile attractiveness by 7.5% more than camouflage treatment. No other significant differences were shown between different types of treatment. Based on the available data, orthodontic treatment seems to moderately improve the attractiveness of the smile. There is significant bias in the current literature assessing the effect of orthodontics on smile attractiveness; therefore, the results cannot be accepted with certainty.
Sections du résumé
BACKGROUND
BACKGROUND
Smile attractiveness is a primary factor for patients to seek orthodontic treatment, however, there is yet no systematic evaluation of this topic in the literature.
OBJECTIVES
OBJECTIVE
To assess the current evidence on the effect of orthodontic treatment on smile attractiveness.
SEARCH METHODS
METHODS
Seven electronic databases (MEDLINE, Cochrane Library, Virtual Health Library, SCOPUS, Web of Science, Google Scholar and Embase) were searched on 14 September 2022.
SELECTION CRITERIA
METHODS
Studies evaluating smile attractiveness before and after orthodontic treatment or only after completion of orthodontic treatment.
DATA COLLECTION AND ANALYSIS
METHODS
Extracted data included study design and setting, sample size and demographics, malocclusion type, treatment modality and method for outcome assessment. Risk of bias was assessed with the ROBINS-I tool for non-randomised studies. Random-effects meta-analyses of mean differences and their 95% confidence intervals (CIs) were planned a priori.
METHODS
METHODS
After elimination of duplicate studies, data extraction and risk of bias assessment according to the Cochrane guidelines, an evaluation of the overall evidence was performed. The included studies were evaluated based on the characteristics of their study and control groups and based on their main research question. Also, all outcome measures were standardized into a common assessment scale (0-100), in order to obtain more easily interpretable results.
RESULTS
RESULTS
Ten studies were included in this review, nine of which were assessed as being at serious risk of bias and one at moderate risk of bias. The large heterogeneity between the included studies did not allow for a meta-analysis. Orthodontic treatment has a moderately positive effect on smile attractiveness. When compared to no treatment, orthodontic treatment with premolar extractions improves smile attractiveness by 22%. Also, surgical correction of Class III cases increases smile attractiveness by 7.5% more than camouflage treatment. No other significant differences were shown between different types of treatment.
CONCLUSION
CONCLUSIONS
Based on the available data, orthodontic treatment seems to moderately improve the attractiveness of the smile. There is significant bias in the current literature assessing the effect of orthodontics on smile attractiveness; therefore, the results cannot be accepted with certainty.
Identifiants
pubmed: 36740663
doi: 10.1186/s40510-023-00456-5
pii: 10.1186/s40510-023-00456-5
pmc: PMC9899877
doi:
Types de publication
Systematic Review
Meta-Analysis
Journal Article
Review
Langues
eng
Sous-ensembles de citation
IM
Pagination
4Informations de copyright
© 2023. The Author(s).
Références
J Prosthet Dent. 1984 Jan;51(1):24-8
pubmed: 6583388
Eur J Oral Sci. 2018 Jun;126(3):167-179
pubmed: 29480521
Am J Orthod Dentofacial Orthop. 2008 Apr;133(4):491-9
pubmed: 18405812
PLoS One. 2019 Dec 12;14(12):e0226328
pubmed: 31830111
Int J Dent. 2014;2014:938274
pubmed: 24963296
Angle Orthod. 2016 Jan;86(1):127-34
pubmed: 26367739
Cochrane Database Syst Rev. 2019 Oct 3;10:ED000142
pubmed: 31643080
Am J Orthod Dentofacial Orthop. 2019 Jan;155(1):57-63.e3
pubmed: 30591167
Biology (Basel). 2022 May 07;11(5):
pubmed: 35625447
Int J Cosmet Sci. 2018 Apr;40(2):193-198
pubmed: 29469966
Am J Hum Biol. 2011 Nov-Dec;23(6):805-14
pubmed: 21957062
Annu Rev Psychol. 2015 Jan 3;66:519-45
pubmed: 25196277
Eur J Orthod. 2014 Feb;36(1):1-8
pubmed: 21771805
Front Psychol. 2017 Dec 22;8:2254
pubmed: 29312091
BMJ. 2015 Jan 02;350:g7647
pubmed: 25555855
Am J Orthod Dentofacial Orthop. 2001 Aug;120(2):98-111
pubmed: 11500650
PLoS Genet. 2014 Mar 20;10(3):e1004224
pubmed: 24651127
PLoS One. 2021 Feb 3;16(2):e0245557
pubmed: 33534847
Sci Rep. 2019 Jun 10;9(1):8364
pubmed: 31182736
J Craniomaxillofac Surg. 2017 Jun;45(6):913-920
pubmed: 28431806
Philos Trans R Soc Lond B Biol Sci. 2011 Jun 12;366(1571):1638-59
pubmed: 21536551
Int J Prosthodont. 2003 Jul-Aug;16(4):429-34
pubmed: 12956500
Am J Orthod Dentofacial Orthop. 1993 May;103(5):395-411
pubmed: 8480709
Saudi Med J. 2015 Jan;36(1):87-93
pubmed: 25630010
Percept Mot Skills. 1996 Jun;82(3 Pt 2):1111-21
pubmed: 8823879
Eur J Orthod. 1999 Feb;21(1):79-87
pubmed: 10191581
Percept Mot Skills. 2012 Jun;114(3):964-78
pubmed: 22913033
BMJ. 2016 Oct 12;355:i4919
pubmed: 27733354
Sci Rep. 2021 Aug 12;11(1):16456
pubmed: 34385558
PLoS One. 2012;7(3):e33461
pubmed: 22438936
Neuropsychologia. 2003;41(2):147-55
pubmed: 12459213
Angle Orthod. 2000 Feb;70(1):3-10
pubmed: 10730669
PLoS One. 2014 Jul 02;9(7):e99629
pubmed: 24988325
Am J Orthod. 1970 Feb;57(2):132-44
pubmed: 5263359
J Orthod Sci. 2022 May 04;11:25
pubmed: 35754422
Psychon Bull Rev. 2008 Jun;15(3):615-22
pubmed: 18567264
Am J Phys Anthropol. 2019 Aug;169(4):678-688
pubmed: 31189026
Sci Rep. 2021 Feb 2;11(1):2779
pubmed: 33531621
BMJ. 2019 Aug 28;366:l4898
pubmed: 31462531
Annu Rev Psychol. 2019 Jan 4;70:271-294
pubmed: 30256720
PLoS One. 2016 Dec 22;11(12):e0168458
pubmed: 28005995
J Clin Med. 2021 Feb 17;10(4):
pubmed: 33671163
Eur J Orthod. 2022 Dec 1;44(6):636-649
pubmed: 35984326
Am J Orthod Dentofacial Orthop. 2014 Mar;145(3):296-304
pubmed: 24582021
Pers Soc Psychol Bull. 2009 Dec;35(12):1661-71
pubmed: 19762717
BMJ. 2009 Jul 21;339:b2535
pubmed: 19622551
J Stomatol Oral Maxillofac Surg. 2022 Oct;123(5):498-504
pubmed: 35577305
Clin Oral Investig. 2021 Dec;25(12):6791-6797
pubmed: 33959816
PLoS One. 2020 Dec 3;15(12):e0243230
pubmed: 33270729
BDJ Open. 2020 May 05;6:6
pubmed: 32411387
J Am Dent Assoc. 2017 Jan;148(1):9-16
pubmed: 27771001
Angle Orthod. 2010 Mar;80(2):322-8
pubmed: 19905858
Am J Orthod Dentofacial Orthop. 1993 May;103(5):452-8
pubmed: 8480714
Psychol Sci. 2006 Jul;17(7):592-8
pubmed: 16866745
Am J Orthod Dentofacial Orthop. 2015 May;147(5):596-603
pubmed: 25919105
Am J Orthod Dentofacial Orthop. 2017 Oct;152(4):509-515
pubmed: 28962736
Cognition. 1991 Aug;40(1-2):1-19
pubmed: 1786670
Angle Orthod. 2007 Sep;77(5):759-65
pubmed: 17685777
Orthod Craniofac Res. 2019 Feb;22(1):53-57
pubmed: 30549432
Orthod Craniofac Res. 2020 Nov;23(4):413-418
pubmed: 32351017
Prog Orthod. 2017 Dec;18(1):8
pubmed: 28317085