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Effect of nonextraction and extraction orthodontic treatments on smile esthetics for different malocclusions.

Abstract Smile esthetics is a critical factor for evaluating orthodontic treatment outcomes. In this study, we evaluated the differences in esthetic perceptions and smile variables between extraction and nonextraction treatments for different malocclusions.
PMID
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Authors

Mayor MeshTerms

Esthetics, Dental

Orthodontics, Corrective

Smiling

Tooth Extraction

Keywords
Journal Title american journal of orthodontics and dentofacial orthopedics : official publication of the american association of orthodontists, its constituent societies, and the american board of orthodontics
Publication Year Start




PMID- 29287659
OWN - NLM
STAT- MEDLINE
DCOM- 20180112
LR  - 20180112
IS  - 1097-6752 (Electronic)
IS  - 0889-5406 (Linking)
VI  - 153
IP  - 1
DP  - 2018 Jan
TI  - Effect of nonextraction and extraction orthodontic treatments on smile esthetics 
      for different malocclusions.
PG  - 81-86
LID - S0889-5406(17)30769-2 [pii]
LID - 10.1016/j.ajodo.2017.05.033 [doi]
AB  - INTRODUCTION: Smile esthetics is a critical factor for evaluating orthodontic
      treatment outcomes. In this study, we evaluated the differences in esthetic
      perceptions and smile variables between extraction and nonextraction treatments
      for different malocclusions. METHODS: Ninety participants were divided into 3
      groups according to their pretreatment overjet (group I, 0-4 mm; group II, >4 mm;
      group III, <0 mm), with 15 extraction participants and 15 nonextraction
      participants in each group. Posttreatment frontal smiling photographs were
      evaluated by 30 raters (10 orthodontists, 10 general dentists, 10 laypeople), and
      9 smile variables were measured. RESULTS: Smile perception for the group II
      extraction subjects was higher than for the nonextraction subjects by the
      orthodontists and general dentists. Regardless of the type of treatment, group
      III subjects were rated lower than those in groups I and II. The arch form index,
      maxillary incisor show, and smile arc were greater in the extraction
      participants. In multiple regression analysis, nonextraction and group III
      correlated negatively with the esthetic score. Maxillary incisor show, tooth
      number display, and buccal corridor ratio correlated positively with the esthetic
      score. CONCLUSIONS: Group II extraction subjects were rated higher than the
      nonextraction subjects by dental professionals. A smile with greater maxillary
      incisor show, number of displayed teeth, and buccal corridor ratio was considered
      more esthetic.
CI  - Copyright (c) 2017 American Association of Orthodontists. Published by Elsevier
      Inc. All rights reserved.
FAU - Cheng, Hsin-Chung
AU  - Cheng HC
AD  - School of Dentistry, College of Oral Medicine, Taipei Medical University;
      Orthodontic Division, Department of Dentistry, Taipei Medical University
      Hospital, Taipei, Taiwan. Electronic address: [email protected]
FAU - Wang, Yi-Chun
AU  - Wang YC
AD  - School of Dentistry, College of Oral Medicine, Taipei Medical University;
      Orthodontic Division, Department of Dentistry, Taipei Medical University
      Hospital, Taipei, Taiwan.
LA  - eng
PT  - Comparative Study
PT  - Journal Article
PL  - United States
TA  - Am J Orthod Dentofacial Orthop
JT  - American journal of orthodontics and dentofacial orthopedics : official
      publication of the American Association of Orthodontists, its constituent
      societies, and the American Board of Orthodontics
JID - 8610224
SB  - D
SB  - IM
MH  - *Esthetics, Dental
MH  - Humans
MH  - Malocclusion/*therapy
MH  - *Orthodontics, Corrective
MH  - *Smiling
MH  - *Tooth Extraction
MH  - Treatment Outcome
EDAT- 2017/12/31 06:00
MHDA- 2018/01/13 06:00
CRDT- 2017/12/31 06:00
PHST- 2016/12/01 00:00 [received]
PHST- 2017/05/01 00:00 [revised]
PHST- 2017/05/01 00:00 [accepted]
PHST- 2017/12/31 06:00 [entrez]
PHST- 2017/12/31 06:00 [pubmed]
PHST- 2018/01/13 06:00 [medline]
AID - S0889-5406(17)30769-2 [pii]
AID - 10.1016/j.ajodo.2017.05.033 [doi]
PST - ppublish
SO  - Am J Orthod Dentofacial Orthop. 2018 Jan;153(1):81-86. doi:
      10.1016/j.ajodo.2017.05.033.