Novel method of 3-dimensional soft-tissue analysis for Class III patients

Bozic, Marko; Kau, Chung How; Richmond, Stephen; Ovsenik, Maja; Hren, Nataša Ihan

doi:10.1016/j.ajodo.2009.01.033

Cited by 15 publications

(4 citation statements)

References 24 publications

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“…With regard to gender evaluations, there was no significant difference between males and females with Class III malocclusions in soft tissue studies [24][25][26][27][28][29] . In our study, although soft tissue parameters were generally higher in males, a significant difference was observed in approximately one-quarter of the measurements made by gender.…”

Section: Discussionmentioning

confidence: 99%

Comparison of three-dimensional soft-tissue evaluations between skeletal and pseudo-class III malocclusions

Kale

Büyükçavuş

2020

Sci Rep

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The aim of our study was to compare soft tissue measurements with 3D imaging methods in individuals with untreated skeletal and pseudo-Class III malocclusions. The study sample consisted of 75 patients (38 males, 37 females, mean age 12.41 ± 2.35 years) with pseudo- and true skeletal Class III malocclusions and skeletal Class I malocclusions. Soft tissue evaluations of all patients were performed using 3D stereophotogrammetric facial images. In our study, 26 landmarks, 17 linear measurements, 13 angular measurements, and 5 volume measurements were made using the 3dMD Vultus software. The significance was determined to be p < 0.05 in ANOVA, Tukey tests. No significant differences were found among the groups in terms of demographic data (p > 0.05). The skeletal Class I control group had a significantly more extended upper lip and vermillion length as compared to the Class III groups. The soft tissue convexity angle and upper nasal angle were found to be wider in the Class III malocclusion group compared to those in the Class I control group. While the pseudo-Class III group had a significantly lower midface volume, chin volume was significantly higher in the skeletal class group. Upper lip volume was significantly higher in the Class I group. Using 3dMD for guiding clinicians in the differential soft and hard tissue diagnosis of pseudo-Class III malocclusions, differences were revealed in Class I patients in the middle part of the face. In the differential diagnosis of true Class III malocclusions, chin volume was found to be different from that of Class I patients.

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Section: Discussionmentioning

confidence: 99%

Comparison of three-dimensional soft-tissue evaluations between skeletal and pseudo-class III malocclusions

Kale

Büyükçavuş

2020

Sci Rep

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“…Soft tissue morphology of the subjects with Class III malocclusion has been investigated in several clinical studies by means of thin-plate spline analysis, finite element morphometry, 3D analysis or cephalometric evaluations. [3][4][5][6][7] Cephalometry is the most important and the most widely used diagnostic tool in orthodontics. Cephalometric images from hard 8 and soft tissues 9 are comparable with those obtained from 3D system.…”

Section: Distinguishing Hard and Soft Tissue Facial Morphology Among Class I And Class Iiimentioning

confidence: 99%

Distinguishing Hard and Soft Tissue Facial Morphology Among Class I and Class Iii Children: A Cephalometric Assessment

Kılıç¹,

Oktay²,

Çatal³

et al. 2018

Atatürk Üniversitesi Diş Hekimliği Fakültesi Dergisi

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Aim:To assess the sagittal soft and hard soft tissue morphology of growing Class III patients in comparison with a Class I control subjects. Materials and Methods: Forty-one female children with Class III malocclusion and 30 Class I female children were included in the study. Eight linear and 6 angular measurements were made on lateral cephalograms to evaluate soft tissue and skeletal characteristics. Results: The subjects with Class III malocclusion showed a retrusive maxilla (A-y distance, 48.52±2.53) and upper lip (Ss-y distance, 64.14±3.26), a protrusive mandible (B-y distance, 56.15±5.49) a prominent chin (Pog'-y distance, 70.65±6.87), retroclined lower incisors (IMPA, 87.14±5.68), and increased vertical dimensions (SN-GoMe, 36.49±5.29) compared to control subjects. Conclusions: Our findings indicated that soft and hard tissue characteristics of Class III subjects are distinct from Class I subjects in the middle region and lower third of the face. Orthopedic traction of mid-face arguably started earlier as a first treatment protocol to obtain balanced facial profile in Class III subjects.

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“…(19) Consequently, in recent years, the use of CBCT for evaluation of facial asymmetry has become more common. CBCT not only overcomes the disadvantages of 2D radiographs without exposing the patient to high levels of radiation and great expense (20,21) but also improves the ability to understand the 3D nature of facial asymmetry, enabling the simultaneous evaluation of both hard and soft tissues, and enhances treatment outcomes. (22,23) Recent studies have recommended the use of CBCT for diagnosing facial asymmetry and classified 3D imaging as the best method for understanding a patient's morphology.…”

Section: Introductionmentioning

confidence: 99%

Comparative evaluation of hard and soft tissue mid-face dimensions of Class I and Class III Individuals using CBCT

2017

IJODR

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Introduction:Augmenting the malar area enhances the angularity and fullness of the mid face. Pop culture portrays people with high malar prominence and angular faces as beautiful and exotic. (1) On the other hand, people with mid face deficiency tend to have a gaunt or hollow mid face leading to increased show of the sclera inferior to the pupil. Materials and Method: Thirty Class I and 30 Class III CBCT images (16 male, 14 female -each group) between the age group of 14-20 years were included in the study. Data collected from the patients reporting to the Insight CBCT Center, Pune. The CBCT images were analyzed with creation of hard and soft tissue slices for PPA and results were drawn with statistical analysis. Results: The Class I male horizontal slices had smaller measurements (P<.05) in both the soft and hard tissue than Class III by 0.4 to 1.5 mm at nearly nine measurements of PPA. The Class III sample pattern profile measurements were larger by 0.6 to 1.7 mm. The laterality measurements also found to be larger for the Class III as compared to Class I. Discussion & Conclusion:Class III males found to have a larger mid face deficiency than Class I male. Anterior component of the Class III male's mid face showed posterior positioning. Class I and Class III female sample showed similar size and position of the mid facial complex (Statistically Insignificant). Class III male's mid facial deficiency was more, mid face complex positioned further laterally and elongated more anteriorly as compared to the Class I male and female Class III.

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Novel method of 3-dimensional soft-tissue analysis for Class III patients

Cited by 15 publications

References 24 publications

Comparison of three-dimensional soft-tissue evaluations between skeletal and pseudo-class III malocclusions

Comparison of three-dimensional soft-tissue evaluations between skeletal and pseudo-class III malocclusions

Distinguishing Hard and Soft Tissue Facial Morphology Among Class I and Class Iii Children: A Cephalometric Assessment

Comparative evaluation of hard and soft tissue mid-face dimensions of Class I and Class III Individuals using CBCT

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