Effect of orthognathic surgery on profile esthetics in Class II:1 malocclusions

Klaus, Katharina; Heumann, Christian; Ruf, Sabine

doi:10.1007/s00056-017-0099-8

Cited by 2 publications

(1 citation statement)

References 32 publications

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“…In their approach to this problem, orthodontists are divided into those who use a functional type of approach and those who simply seek to compensate the dentition in order to achieve a stable occlusion that lasts over time [7][8][9][10]. This latter approach is adopted by those who believe that they cannot modify the patient's profile using orthodontic mechanics and that in order to improve the profile one must fall back upon orthognathic surgery [7,[11][12][13][14]. The functional approach, which is unquestionably the option that the majority of clinicians use, also enjoys divergent opinions concerning the type of approach and the timing of the therapy.…”

Section: Introductionmentioning

confidence: 99%

The Use of TADs in the Mandibular Arch to Prevent Proclination of the Lower Incisors during the Use of the Mini Scope Herbst Appliance

Aiello

Finamore

Scribante

et al. 2022

Case Reports in Dentistry

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Class II malocclusions are the most frequent within the Italian population. Normally, these malocclusions are caused by a reduction in a mandibular component whose functional stimulus is still very much cause for debate. The negative effect of all types of Class II functional appliances is in the proclination of the lower incisors, which, in subjects whose incisors are already labially inclined, must be checked at all times to avoid serious consequences to these elements. In this case study, a girl aged 14 years and 5 months presented with Class II malocclusion, 2nd division with a convex profile and a visibly retruded chin. The lower incisors presented a marked proclination (−1/Go-Gn ini = 107.7°) in a brachyfacial patient. To avoid further inclination of the lower incisors a Herbst appliance was mounted in two separate sittings. The first part of the appliance including the tubes was mounted to the upper jaw allowing the vestibularisation of the upper incisors in order to increase the overjet. Once this was obtained the lower part of the appliance was mounted together with the telescopic arms associated with two temporary anchorage devices (TADs) in positions 36–37 and 46–47, and an anterior section 33–43 with distal loop to which two double metallic ligatures were anchored at the TADs to contrast the negative effect of the appliance. At the end of the first functional phase, the treatment was refined using MBK fixed therapy to finish the case. The orthodontic therapy led to a visible improvement of the profile and the achievement of a first-class dental–skeletal result on both sides. From the cephalometric evaluation carried out immediately after the Herbst appliance treatment at time T1 and at the end of the orthodontic therapy T2 it was possible to verify a slight increase in the inclination of the lower incisors (−1/Go-Gn fin = 108°). In conclusion, it can be said that the use of the skeletal anchorage avoided, in this case, the proclination effect in the lower incisors due to the use of a Herbst appliance.

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Section: Introductionmentioning

confidence: 99%

The Use of TADs in the Mandibular Arch to Prevent Proclination of the Lower Incisors during the Use of the Mini Scope Herbst Appliance

Aiello

Finamore

Scribante

et al. 2022

Case Reports in Dentistry

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Impact of functional orthodontic treatment on facial attractiveness of children with Class II division 1 malocclusion

Paduano

Rongo

Bucci

et al. 2019

European Journal of Orthodontics

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Summary Background/objectives Whether orthodontic treatment with functional appliances improves facial aesthetics is still under debate. This study aimed to determine whether functional orthodontic treatment improves the facial attractiveness of patients with Class II division 1 malocclusion. Materials/method Extraoral lateral photographs of 20 children with Class I (CLI, 11.7 ± 0.8 years), and before (T1) and after treatment (T2) photographs of patients with Class II division 1 (CLII T1 and CLII T2; mean age ± SD = 11.1 ± 0.6 years) treated with functional appliances, were transformed into black silhouettes. Three panels of examiners including 30 orthodontists (39.0 ± 10.1 years), 30 dentists (40.0 ± 9.7) and 30 laypersons (39.0 ± 9.2) evaluated the attractiveness of patients’ silhouettes using a 100-mm visual analogue scale, and the sagittal position of patients’ upper lip, lower lip, and chin using a 3-point Likert scale. Two-way ANOVA and a chi-square test were used to test differences among groups. Statistically significance was set as P < 0.05. Results The silhouettes of CLII T2 individuals were more attractive than those of the other groups (all Ps < 0.001). The upper lip, lower lip, and the chin of these individuals were judged to be normally positioned in 69.5 per cent, 74.9 per cent, and 72.3 per cent of the assessments, respectively (all Ps < 0.05). Limitations This study did not account for the psychological profile of the examiners, which may have affected the ratings. Conclusions/implications Orthodontic treatment with functional appliances is associated with a superior facial profile attractiveness. Functional treatment should be considered as a treatment option to improve the facial appearance of children with Class II division 1 malocclusion.

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Effect of orthognathic surgery on profile esthetics in Class II:1 malocclusions

Abstract: The lower the pretreatment VAS score and the profile convexity angles or the larger the pretreatment ANB angles were, the more the VAS improved. Pretreatment thresholds for consistent improvements were as follows: VAS score < 20 mm, ANB > 8°, and profile angle ≤ 155°.

Cited by 2 publications

References 32 publications

The Use of TADs in the Mandibular Arch to Prevent Proclination of the Lower Incisors during the Use of the Mini Scope Herbst Appliance

The Use of TADs in the Mandibular Arch to Prevent Proclination of the Lower Incisors during the Use of the Mini Scope Herbst Appliance

Impact of functional orthodontic treatment on facial attractiveness of children with Class II division 1 malocclusion

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