Effects of Vertical Positions of Anterior Teeth on Smile Esthetics in Japanese and Korean Orthodontists and Orthodontic Patients

2013 ◽  
Vol 25 (4) ◽  
pp. 274-282 ◽  
Author(s):  
Hideki Ioi ◽  
Sangwook Kang ◽  
Takahiro Shimomura ◽  
Seong-Sik Kim ◽  
Soo-Byung Park ◽  
...  
Keyword(s):  
Anterior Teeth ◽  
Orthodontic Patients ◽  
Smile Esthetics

scholarly journals Hypodontia. Does the Prevalence and Distribution Pattern Differ in Orthodontic Patients?

2007 ◽  
Vol 01 (03) ◽  
pp. 167-173 ◽  
Author(s):  
Yildiray Sisman ◽  
Tancan Uysal ◽  
Ibrahim Erhan Gelgor
Keyword(s):  
Orthodontic Treatment ◽  
Treatment Modalities ◽  
Team Approach ◽  
Missing Teeth ◽  
Multidisciplinary Team Approach ◽  
Anterior Teeth ◽  
Wide Range ◽  
Orthodontic Patients ◽  
The Right ◽  
Gender Specific

ABSTRACTObjective: The aim of this study was to document the prevalence of hypodontia in the permanent dentition among a group of Turkish sample who sought orthodontic treatment and to compare present results with the specific findings of other populations. The occurrence was evaluated in relation to gender, specific missing teeth, the location and pattern of distribution in the maxillary and mandibular arches and right and left sides.Materials And Methods: Orthodontic files of 2413 patients (1557 females-mean age: 17.78±5.41 years old and 856 males-mean age:17.02±5.47 years old) which included orthopantomograms, study models, and anamnestic data were examined for evidence of hypodontia.Results: The prevalence of hypodontia was 7.54% (8.09% for female and 6.54% for male). Hypodontia was found considerably more frequently in the maxilla than in the mandible. Similarity in the distribution of missing teeth between the right and left sides was detected. The most frequently missing teeth were the maxillary lateral incisors, followed by the mandibular and maxillary second premolars. The majority of patients had one or two teeth missing, but seldom three or more.Conclusions: Present data for hypodontia were within the wide range reported in the literature. The findings of patients with hypodontia involving the anterior teeth and others missing more than two teeth in the same quadrant were an indication of a great need for orthodontic treatment. By early detection of missing teeth, alternative treatment modalities can be planned and performed with a multidisciplinary team approach. (Eur J Dent 2007;1:167-173)

scholarly journals Analysis of smile esthetics in American Board of Orthodontic patients

2013 ◽  
Vol 84 (3) ◽  
pp. 486-491 ◽  
Author(s):  
Sercan Akyalcin ◽  
Leslie K. Frels ◽  
Jeryl D. English ◽  
Stephen Laman
Keyword(s):  
Stepwise Regression ◽  
Positive Association ◽  
Inclusion Criteria ◽  
Significant Difference ◽  
Standard Deviation Range ◽  
Orthodontic Patients ◽  
The Common ◽  
The Mean ◽  
General Dentists ◽  
Smile Esthetics

ABSTRACT Objective: To investigate the common denominators of an esthetically pleasing smile in patients who were considered to be successfully treated upon the submission to American Board Orthodontics (ABO) clinical examination. Material and Methods: A total of 462 patients were examined. Ninety subjects that fulfilled the inclusion criteria were included. Standardized digital smile photographs of the subjects were rated by 30 panel members, including orthodontists, general dentists, and parents of orthodontic patients, using a numeric version of the visual analog scale. Three groups were formed using the mean esthetic score ± standard deviation range: unattractive (n  =  21), average (n  =  47), and attractive (n  =  22) smiles. Eleven smile characteristics were digitally measured on the photographs and compared between the groups using one-way analysis of variance and χ2 tests. Additionally, regression analyses were used to investigate the association of the smile characteristics with the esthetic score. Results: A significant difference was found between the three groups for the comparison of smile arc relationship (P < .001). When all the variables used in this study were entered in the regression analysis, a positive association was found (r  =  0.658; r2  =  0.434; P < .001). Additionally, two models were defined using stepwise regression. The first model included the smile arc (r  =  0.478; r2  =  0.228; P < .001), and the second model had both the smile arc and right gingival display/visible dentition display ratio (r  =  0.567; r2  =  0.321; P < .001). Conclusions: A harmonious smile arc relationship and less gingival display during a smile are significantly associated with smile attractiveness in patients considered successfully treated according to ABO standards.

scholarly journals Do various degrees of tooth decalcification affect orthodontists', general dentists' and laypersons' ratings of smile esthetics?

2020 ◽  
Vol 90 (3) ◽  
pp. 405-410
Author(s):  
Iyad Al-Omari ◽  
Zaid Al-Bitar ◽  
Ahmad M. Hamdan
Keyword(s):  
Visual Analogue Scale ◽  
Analogue Scale ◽  
Orthodontic Treatment ◽  
White Spot ◽  
White Spot Lesions ◽  
Matched Sample ◽  
Anterior Teeth ◽  
General Dentists ◽  
Smile Esthetics ◽  
Study Participants

ABSTRACT Objectives To compare the effect of various degrees of decalcification after orthodontic treatment (white spot lesions) on orthodontists', general dentists', and laypersons' ratings of smile esthetics. Materials and Methods Eight photographs representing incrementally altered tooth decalcification lesions of maxillary anterior teeth ranging from mild to severe were shown randomly to the study participants. Photographs were rated by a matched sample of orthodontists (N = 42), general dentists (N = 52), and laypeople (N = 58). A visual analogue scale (VAS) was used to assess perceptions of smile esthetics. Results The three groups of raters could distinguish between different decalcification levels. Raters gave more negative scores as the decalcification level increased. Conclusions The three groups of raters were able to distinguish between various degrees of decalcification lesions. General dentists were the most critical of all groups when rating decalcification lesions.

scholarly journals Three-Dimensional Digital Superimposition of Orthodontic Bracket Position by Using a Computer-Aided Transfer Jig System: An Accuracy Analysis

Sensors ◽  
2021 ◽  
Vol 21 (17) ◽  
pp. 5911
Author(s):  
Jae-Hyun Park ◽  
Jin-Young Choi ◽  
Song Hee Oh ◽  
Seong-Hun Kim
Keyword(s):  
Three Dimensional ◽  
Orthodontic Bracket ◽  
Bonding System ◽  
Anterior Teeth ◽  
Computer Aided ◽  
Orthodontic Patients ◽  
Dental Models ◽  
Bracket Position ◽  
3D Software ◽  
Bracket Positioning

Accurate bracket placement is essential for successful orthodontic treatment. An indirect bracket bonding system (IDBS) has been developed to ensure proper bracket positioning with three-dimensional computer-aided transfer jigs. The purpose of this study was to investigate the accuracy of bracket positioning by a one-body transfer jig according to the tooth type and presence/absence of a resin base. In total, 506 teeth from 20 orthodontic patients were included in this study. After initial dental models were scanned, virtual setup and bracket positioning procedures were performed with 3D software. Transfer jigs and RP models were fabricated with a 3D printer, and brackets were bonded to the RP model with or without resin base fabrication. The best-fit method of 3D digital superimposition was used to evaluate the lineal and angular accuracy of the actual bracket position compared to a virtual bracket position. Although all the measurements showed significant differences in position, they were clinically acceptable. Regarding the tooth types, premolars and molars showed higher accuracy than anterior teeth. The presence or absence of a resin base did not consistently affect the accuracy. In conclusion, the proper application of IDBS should be performed considering the errors, and resin base fabrication might not be essential in ensuring high-accuracy IDBS.

A Study on the Change of Perception to Smile Esthetics in Orthodontic Patients

2021 ◽  
Vol 11 (4) ◽  
pp. 253-266
Author(s):  
Ji-Hyun Kim ◽  
Se-Hoon Oh ◽  
Jong-Moon Chae ◽  
Na-Young Chang
Keyword(s):  
Orthodontic Patients ◽  
Smile Esthetics
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