A systematic review of soft-to-hard tissue ratios in orthognathic surgery. Part III: Double jaw surgery procedures

Olate, Sérgio; Zaror, Carlos; Blythe, J.; Mommaerts, Maurice Y.

doi:10.1016/j.jcms.2016.08.016

Cited by 38 publications

(31 citation statements)

References 31 publications

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“…3D studies have been used recently in analysis, diagnosis and surgical planning; without a doubt it represents a real option where costs, learning curve and working time have influenced the slow incorporation into daily practice (Olate et al, 2016). 2D studies have also been incorporated into the analysis of facial asymmetry, integrating soft tissue analysis and the analysis of x-ray images .…”

Section: Discussionmentioning

confidence: 99%

Soft and Hard Tissue Relations in Facial Asymmetry

et al. 2016

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OLATE, S.; CANTÍN, M.; MUÑOZ, M. & VÁSQUEZ, B.Soft and hard tissue relations in facial asymmetry. Int. J. Morphol., 34(3):1058Morphol., 34(3): -1062Morphol., 34(3): , 2016. SUMMARY:The aim of this study was to determine the relations between hard and soft tissues in subjects with facial asymmetry. Included were subjects aged between 15 and 35 years who presented a chin deviation greater than 5 mm from the midline and a unilateral posterior crossbite. Cone beam computed tomography was used to determine the measurements, positioning them on the three spatial planes; then, 5 bilateral bone points were selected on the coronal image, and parallel measurements were taken to determine the range between the bone point and the most lateral soft tissue point. The statistical analysis was done using the Shapiro-Wilk test, presenting normality in the sample distribution and Levene's test, considering a value of p < 0.05 to obtain significant differences. 20 subjects were included with an average age of 23 years, observing that there were differences in the soft tissue distance in relation to the mandibular condylar head; in other measurements, there were no significant differences, although tendencies of greater or less soft tissue width in relation to the mandibular sector of the asymmetry were observed. It may be concluded that there are limited differences in soft tissue width in subjects with facial asymmetry; the low sample number and the selection of new points may have influenced the results.

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Section: Discussionmentioning

confidence: 99%

Soft and Hard Tissue Relations in Facial Asymmetry

et al. 2016

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“…Lastly, the other treatment alternative suggested for this clinical case would be maxillary advancement by means of orthognathic surgery. Moragas et al 16 conducted a systematic review of studies about changes in soft and hard tissues using maxillary repositioning in orthognathic surgeries. They found that, although there are other publications about these changes, more prospective studies have to be conducted to stratify some factors, such as type of osteotomy technique, magnitude of the movement, age, sex, ethnicity, and quantity and quality of soft tissues.…”

Section: Discussionmentioning

confidence: 99%

“…Initially, maxillary advancement was suggested because of the patient’s malar and paranasal deficiency. However, although maxillary advancement by means of orthognathic surgery has been classified as an efficient form of treatment, 16 the patient’s guardians did not give permission for the surgery, and, in addition, the patient did not have any complaints about her facial appearance. Her choice, therefore, was to conduct only the corrective orthodontic treatment with extractions.…”

Section: Case Reportmentioning

confidence: 99%

Tooth extractions in Orthodontics: first or second premolars?

Araújo

Caldas

2019

Dental Press J. Orthod.

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Tooth crowding and protrusions demand rigorous attention during orthodontic planning that includes the extraction of first and second premolars. Some characteristics, such as dentoalveolar bone discrepancies, maxillomandibular relations, facial profile, skeletal maturation, dental asymmetries and patient cooperation, are important elements of an orthodontic diagnosis. This study discusses the options of treatments with extractions and describes the correction of a Class I malocclusion, bimaxillary protrusion, severe anterior crowding in both dental arches and tooth-size discrepancy, using first premolar extractions.

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“…Smile dynamics are linked to factors like central incisor positions, capacity for mobility of the upper lip, increases in overjet and overbite (Peck et al, 1992;Barbosa et al, 2016); other investigations have also demonstrated that the position of the lower lip affects the position of the upper lip (Olate et al, 2016), so that there are variables that have not been fully identified and quantified in the smiling condition; our results show that there are no statistically significant differences in the value of the nasolabial angle when being evaluated at rest and smiling with only 0.8º of difference. Although the depressor muscle of the nasal septum is one of the important ones responsible in this dynamic for the descent of the nasal tip and for decreasing the nasolabial angle, it is possible that in this sample there is no significant alteration in the action of this muscle either in its morphology or in its interaction with other muscles such as the orbiscularis oris of the lips.…”

Section: Discussionmentioning

confidence: 99%

Three-dimensional Analysis of Nasolabial Soft Tissues While Smiling Using stereophotogrammetry (3dMDTM)

et al. 2019

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The nasolabial region is the central esthetic unit of the face and is considered one of the most important determinants of the facial esthetic. The facial morphometry of soft tissues is a very important tool in facial surgery. Advances have been made recently in the capture and analysis of 3D images, which offer great development potential in the diagnosis and treatment of facial deformities. The aim of this study was to characterize the nasolabial region of patient candidates for orthognathic surgery using 3D facial captures. A study was conducted to characterize the width of the nasal base and the nasolabial angle in adult patients through 3D photographs. 30 subjects were included, taking two 3D photos each, one in a resting position and the other smiling. The three-dimensional capture was done with the 3dMDface System. The measurements were taken with the 3dMD Vultus software. The length of the alar base was an average of 34.3 ± 2.6 mm at rest, and 39.1 ± 2.9 mm smiling. The mean of the nasolabial angle was 104.6 ± 9.6° at rest and 105.4 ± 14.3º smiling. Additionally, the distance of the alar base smiling compared to its distance at rest increased an average of 4.83 mm, whereas the nasolabial angle smiling increased an average of 0.8º compared to at rest. In this study, the nasolabial angle did not present any significant changes so that its assessments in the case of facial modifications can be standard; the width of the nasal base is significantly modified with the smile and thus a more intense study of any type of modification in this area is required.

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A systematic review of soft-to-hard tissue ratios in orthognathic surgery. Part III: Double jaw surgery procedures

Cited by 38 publications

References 31 publications

Soft and Hard Tissue Relations in Facial Asymmetry

Soft and Hard Tissue Relations in Facial Asymmetry

Tooth extractions in Orthodontics: first or second premolars?

Three-dimensional Analysis of Nasolabial Soft Tissues While Smiling Using stereophotogrammetry (3dMDTM)

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