The purpose of this investigation is to describe a potentially useful analysis in assessing the required extent of sagittal chin augmentation or set-back, by relating chin prominence to lower lip position using the ‘lower lip-chin prominence angle’. The secondary aim was to quantitatively evaluate the influence of this angle on perceived attractiveness and desire for surgery. Having described this angular analysis, a quantitative evaluation was undertaken by incrementally altering the angle on an idealised profile image to create a range of images that were rated on a 7-point Likert scale by a pre-selected group of pretreatment orthognathic patients, clinicians and laypeople. In treatment planning alterations in chin prominence, an ‘ideal’ sagittal position with soft tissue pogonion on or just behind a true vertical line through the most prominent point of the lower lip may be used. Chin retrusion or prominence up to an angle of 15 retrusion to 5 prominence is deemed acceptable. Surgery is desired from chin prominence of greater than 15 and retrusions greater than 25 . The greater the retrusion or prominence of the chin from an angle of 0 , the less the perceived attractiveness and the greater the desire for surgical correction.

Analysing chin prominence in relation to the lower lip: The lower lip-chin prominence angle / F. Naini, U. Garagiola, D. Wertheim. - In: JOURNAL OF CRANIO-MAXILLOFACIAL SURGERY. - ISSN 1010-5182. - 47:8(2019 Aug), pp. 1310-1316. [10.1016/j.jcms.2019.06.002]

Analysing chin prominence in relation to the lower lip: The lower lip-chin prominence angle

U. Garagiola
Secondo
;
2019

Abstract

The purpose of this investigation is to describe a potentially useful analysis in assessing the required extent of sagittal chin augmentation or set-back, by relating chin prominence to lower lip position using the ‘lower lip-chin prominence angle’. The secondary aim was to quantitatively evaluate the influence of this angle on perceived attractiveness and desire for surgery. Having described this angular analysis, a quantitative evaluation was undertaken by incrementally altering the angle on an idealised profile image to create a range of images that were rated on a 7-point Likert scale by a pre-selected group of pretreatment orthognathic patients, clinicians and laypeople. In treatment planning alterations in chin prominence, an ‘ideal’ sagittal position with soft tissue pogonion on or just behind a true vertical line through the most prominent point of the lower lip may be used. Chin retrusion or prominence up to an angle of 15 retrusion to 5 prominence is deemed acceptable. Surgery is desired from chin prominence of greater than 15 and retrusions greater than 25 . The greater the retrusion or prominence of the chin from an angle of 0 , the less the perceived attractiveness and the greater the desire for surgical correction.
Chin projection; Angular analysis; Prominence; Retrusion; Perception; Attractiveness
Settore MED/28 - Malattie Odontostomatologiche
ago-2019
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/962278
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