Comparison of soft tissue changes between incisor tipping and translation after premolar extraction

Baik, Won-Kyeong; Choi, Sung‐Hwan; Yul, Jung; Yu, Hyung Seog; Lee, Kee‐Joon

doi:10.4041/kjod.2022.52.1.42

Cited by 10 publications

(10 citation statements)

References 29 publications

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“…Clinical research suggests that orthodontic treatment, particularly measures involving tooth extraction, may lead to anterior tooth retraction, further in uencing the structure and position of the lips [17]. Simultaneously, changes in relevant dental structures also impact mandibular morphology [18], chin-lip groove morphology [19], and nasolabial angle [20], all of which have strong correlations with facial aesthetics [21,22], in line with our ndings.…”

Section: Discussionsupporting

confidence: 85%

Impact of Orthodontic-Induced Facial Morphology Changes on Aesthetic Evaluation: A Retrospective Study

Liu,

Du,

Wang

et al. 2023

Preprint

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Background The profound influence of orthodontic interventions on facial aesthetics has been a topic of increasing interest. This study delves into the intricate interplay between orthodontic treatments, quantified facial feature alterations, and aesthetic perceptions. Methods A comprehensive cohort of clinical images capturing pre- and post-orthodontic treatment stages was meticulously curated, encompassing a sample size of N = 73. Employing advanced phenotypic grouping techniques, facial landmarks were meticulously identified, providing a nuanced understanding of facial changes. The subsequent aesthetic assessments, executed by a panel of experts, underwent rigorous statistical analyses to unveil the correlations between orthodontic modalities, facial feature transformations, and aesthetic appraisals. Results Notably robust consensus emerged among expert evaluators regarding facial aesthetic judgments, showcasing the highest consistency in lateral views. Intriguingly, orthodontic interventions yielded a substantial elevation in overall aesthetic ratings, with lateral and comprehensive evaluations particularly underscored. Among the subjects subjected to premolar extraction, a significantly more pronounced enhancement in aesthetic outcomes was evident. Distinct facial landmarks, such as pg.sm.hori and pg.n.ls, exhibited substantive alterations that demonstrated significant associations with heightened aesthetic evaluations. Moreover, a comprehensive multifactor analysis underscored the sustained significance of pg.sm.hori, positioning it as a pivotal factor influencing aesthetic outcomes within orthodontic practices. Conclusions This exhaustive study provides a comprehensive exploration of the intricate relationship between orthodontic interventions and facial aesthetics, capitalizing on the amalgamation of clinical images and expert judgments. The findings not only underscore the substantial impact of orthodontic treatments, particularly from lateral perspectives, but also emphasize the pivotal role of specific facial landmarks like pg.sm.hori and pg.n.ls in achieving augmented aesthetic results. These insights not only enrich the clinical decision-making process but also pave the way for further research endeavors aimed at unraveling the complex tapestry of facial aesthetics within the realm of orthodontics.

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Section: Discussionsupporting

confidence: 85%

Impact of Orthodontic-Induced Facial Morphology Changes on Aesthetic Evaluation: A Retrospective Study

Liu,

Du,

Wang

et al. 2023

Preprint

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“…The facial balance and harmony are determined by the interrelation of various factors such as skeletal and soft tissue characteristics, as well as the position and inclination characteristics of the incisors. There are studies that directly relate the effect of orthodontic treatment with the position of the lips as a result of variations in position and inclination of the incisors 7 , 11 .…”

Section: Discussionmentioning

confidence: 99%

“…The biomechanics use in orthodontic treatment can generate changes in the underlying soft tissue, so the possibility of predicting these changes is of paramount importance 7 - 9 .…”

Section: Introductionmentioning

confidence: 99%

Changes in the position and inclination of the upper incisor and upper lip postorthodontic treatment: case reports

Chacón Moreno,

Huasco Huarcaya

2023

Rev Cient Odontol (Lima)

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Objective: To determine the changes in the position and inclination of the upper incisor and upper lip after orthodontic treatment in a series of 3 clinical cases. Materials and Methods: The three reported clinical cases correspond to adult patients who were treated with fixed orthodontics and premolar extractions. Measurements of upper incisor position (UIP), upper incisor inclination (UII), upper lip position (ULP), and upper lip inclination (ULI) were performed on pre-treatment and post-treatment cephalometric radiographs for assessment of changes. Results: In the first case a variation of -1 mm was found for both the UIP and the ULP, as well as a variation of the UII and the ULI, although in different magnitude. Case 2 presented a 2 mm variation in the UII with minimal changes in the upper lip (Δ ULP = 0 mm and Δ ULI =-0.5 mm) and in case 3 a 2 mm variation was obtained for both IIS and ILS. Conclusions: The results obtained in this case reports show us a wide variability, so it is impossible to accurately predict changes in soft tissues as a response to tooth movement. Clinical significance: Predicting tooth movement changes in soft tissues is critical during the initial planning phase of orthodontic treatment.

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“…The aim of orthodontic treatment is to maintain or improve facial esthetics, especially the soft tissue profile, which corresponds to changes caused by the movements of the underlying hard tissue, along with skeletal and dentoalveolar changes [1]. Recently there has been a tendency for patients to pay more attention to the esthetic outcome of orthodontic treatment, rather than function and occlusion [2].…”

Section: Introductionmentioning

confidence: 99%

Esthetic preferences of orthodontists, dentists, and plastic surgeons for balanced facial profiles

Milutinović¹,

Aleksic²,

Avramov³

et al. 2023

J Oral Sci

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Purpose:The aim of this investigation was to determine whether the facial esthetics of subjects rated as "attractive" can be related to specific cephalometric soft tissue parameters. Methods: The profile silhouettes of 100 subjects (45 males and 55 females) were rated by 60 esthetics specialists (20 orthodontists, 20 dentists, and 20 plastic surgeons) using a Likert scale, and 30 of the subjects were selected as being "attractive". The cephalometric measurements of the attractive group were then compared with norms for the general Caucasian population. Results:The effects of specific measured parameters on profile beauty grades were assessed using the median test, and the following variables were found to show significant correlations between the Caucasian norms and the attractive profile group: the ratio of the upper to lower face height (P = 0.011), the ratio of the subnasale -labrale inferius (Sn-Li) and labrale inferius -menton (Li-Me`) lines (P = 0.011), the distance between the chin and the subnasale perpendicular (P = 0.002), upper lip thickness (P = 0.021), soft tissue chin thickness (P = 0.021), vertical height ratio (P = 0.021), and nasolabial angle (P = 0.021). Conclusion:A straight profile with a fuller and more protruded upper lip, a higher nasal tip, and a smaller lower facial third are considered to be the most attractive facial features, and may be useful for improvement of facial esthetics.

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Comparison of soft tissue changes between incisor tipping and translation after premolar extraction

Cited by 10 publications

References 29 publications

Impact of Orthodontic-Induced Facial Morphology Changes on Aesthetic Evaluation: A Retrospective Study

Impact of Orthodontic-Induced Facial Morphology Changes on Aesthetic Evaluation: A Retrospective Study

Changes in the position and inclination of the upper incisor and upper lip postorthodontic treatment: case reports

Esthetic preferences of orthodontists, dentists, and plastic surgeons for balanced facial profiles

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