Morphometric Study of The Lumbosacral Spine and Some of Its Related Angles in Lebanese Adult Females

Abstract Background To investigate changes in facial morphology during the first six months of orthodontic treatment among adult females receiving orthodontic treatment. Methods 43 adult females receiving orthodontic treatment were randomly recruited. 3D facial images were taken at baseline (T0), three months (T1), and six months (T2) after treatment initiation. Spatially dense facial landmarks were digitized to allow for sufficient details in characterization of facial features. 3D geometric morphometrics and multivariate statistics were used to investigate changes in mean and variance of facial shape and facial form associated with treatment. Results We observed statistically significant changes in facial shape across the three treatment stages (p = 0.0022). Pairwise comparisons suggested significant changes from T0 to T1 (p = 0.0045) and from T0 to T2 (p = 0.0072). Heatmap visualization indicated that the buccal and temporal region were invaginated while the labial region became protruded with treatment. The magnitude of shape change was 0.009, 0.004, and 0.010 from T0 to T1, T1 to T2, and T0 to T2, respectively, in unit of Procrustes distance. The average magnitude of change per-landmark was 1.32 mm, 0.21 mm, and 1.34 mm, respectively. Changes in mean facial form were not statistically significant (p = 0.1143). No changes in variance of facial shape were observed across treatment stages (p > 0.05). Conclusion Rate of facial changes was twice as fast during the first three months as that during fourth to sixth month. Buccal and temporal region became invaginated while labial region became protruded with treatment.

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Soft Tissue Facial Changes Among Adult Females Receiving Orthodontic Treatment: A Spatially Dense 3D Geometric Morphometric Study

10.21203/rs.3.rs-35933/v1 ◽

2020 ◽

Author(s):

Si Yu Hou ◽

Wenwen Zhou ◽

Hongwei Dai ◽

Hai Ming Wong ◽

Yi Feng Wen ◽

...

Keyword(s):

Orthodontic Treatment ◽

Shape Change ◽

Morphometric Study ◽

Temporal Region ◽

Facial Morphology ◽

Geometric Morphometric ◽

Adult Females ◽

Facial Shape ◽

Mean And Variance ◽

Facial Changes

Abstract Background: To investigate changes in facial morphology during the first six months of orthodontic treatment among adult females receiving orthodontic treatment.Methods: 18 adult females receiving orthodontic treatment were randomly recruited. 3D facial images were taken at baseline (T0), three months (T1), and six months (T2) after treatment initiation. Spatially dense facial landmarks were digitized to allow for sufficient details in characterization of facial features. 3D geometric morphometrics and multivariate statistics were used to investigate changes in mean and variance of facial shape and facial form associated with treatment.Results: We observed statistically significant changes in facial shape across the three treatment stages (p = 0.003). Pairwise comparisons suggested significant changes from T0 to T1 (p = 0.0059) and from T0 to T2 (p = 0.0098). Heatmap visualization indicated that the buccal and temporal region were invaginated while the labial region became protruded with treatment. The magnitude of shape change was 0.009, 0.004, and 0.010 from T0 to T1, T1 to T2, and T0 to T2, respectively, in unit of Procrustes distance. The average magnitude of change per-landmark was 1.31 mm, 0.22 mm, and 1.33 mm, respectively. Changes in mean facial shape were not statistically significant (p = 0.103). No changes in variance of facial shape were observed across treatment stages (p > 0.05).Conclusion: Rate of facial changes was twice as fast during the first three months as that during fourth to sixth month. Buccal and temporal region became invaginated while labial region became protruded with treatment.

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Preliminary Study of the Influence of Red Blood Cells Size on the Determinism of the Breed in Cattle

Veterinary Medicine International ◽

10.1155/2014/429495 ◽

2014 ◽

Vol 2014 ◽

pp. 1-4 ◽

Cited By ~ 5

Author(s):

Nezar Adili ◽

Mohamed Melizi ◽

Hadj Belabbas ◽

Abdelhamid Achouri

Keyword(s):

Red Blood Cells ◽

Blood Cells ◽

Morphometric Study ◽

Blood Collection ◽

Local Breed ◽

Blood Samples ◽

Adult Females ◽

Blood Smears ◽

The Alps ◽

Preliminary Study

This study was carried out on five cattle groups, local, cross, Prim’Holstein, Montbeliard, and Brown of the Alps, in order to study the influence of breed on erythrocytes diameter. For each breed, blood samples were taken from 15 adult females by jugular venipuncture; blood smears were made on slides immediately after the blood collection and stained according to the method of May-Gründwald Giemsa. Morphometric study was realized using the OPTIKA Pro Vision software. The statistical analysis was assessed by using the descriptive boxplots test and ANOVA. The size of red blood cells is greater in the imported Brown of the Alps breed (5,32 ± 0,19) and also in our local breed (5,23 ± 0,10), whereas they were smaller in the Montbeliard breed (4,79 ± 0,21). This investigation allowed us to show that from a drop of blood we can have an idea of the bovine breeds, taking into account the size of the erythrocytes.

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Is There a Difference in Shape of the Endplates in Sagittal Plane? A Morphometric Study of the Lumbosacral Spine

The Spine Journal ◽

10.1016/j.spinee.2010.07.127 ◽

2010 ◽

Vol 10 (9) ◽

pp. S46 ◽

Cited By ~ 3

Author(s):

Palaniappan Lakshmanan ◽

Vlasta Dvorak ◽

Walter Schratt ◽

Sathya Thambiraj ◽

Iona Collins ◽

...

Keyword(s):

Sagittal Plane ◽

Morphometric Study ◽

Lumbosacral Spine

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Soft tissue facial changes among adult females during the first six months of orthodontic treatment: a spatially dense 3D geometric morphometric study

10.21203/rs.3.rs-35933/v2 ◽

2020 ◽

Author(s):

Si Yu Hou ◽

Wenwen Zhou ◽

Hongwei Dai ◽

Hai Ming Wong ◽

Yi Feng Wen ◽

...

Keyword(s):

Orthodontic Treatment ◽

Shape Change ◽

Morphometric Study ◽

Temporal Region ◽

Facial Morphology ◽

Geometric Morphometric ◽

Adult Females ◽

Facial Shape ◽

Facial Changes ◽

Facial Form

Abstract Background: To investigate changes in facial morphology during the first six months of orthodontic treatment among adult females receiving orthodontic treatment.Methods: 18 adult females receiving orthodontic treatment were randomly recruited. 3D facial images were taken at baseline (T0), three months (T1), and six months (T2) after treatment initiation. Spatially dense facial landmarks were digitized to allow for sufficient details in characterization of facial features. 3D geometric morphometrics and multivariate statistics were used to investigate changes in mean and variance of facial shape and facial form associated with treatment.Results: We observed statistically significant changes in facial shape across the three treatment stages (p = 0.003). Pairwise comparisons suggested significant changes from T0 to T1 (p = 0.0059) and from T0 to T2 (p = 0.0098). Heatmap visualization indicated that the buccal and temporal region were invaginated while the labial region became protruded with treatment. The magnitude of shape change was 0.009, 0.004, and 0.010 from T0 to T1, T1 to T2, and T0 to T2, respectively, in unit of Procrustes distance. The average magnitude of change per-landmark was 1.31 mm, 0.22 mm, and 1.33 mm, respectively. Changes in mean facial form were not statistically significant (p = 0.103). No changes in variance of facial shape were observed across treatment stages (p > 0.05).Conclusion: Rate of facial changes was twice as fast during the first three months as that during fourth to sixth month. Buccal and temporal region became invaginated while labial region became protruded with treatment.

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