Analysis of facial skeleton shape in patients with complete
unilateral cleft lip and palate: geometric morphometry

J 2006

Analysis of facial skeleton shape in patients with complete unilateral cleft lip and palate: geometric morphometry

VELEMÍNSKÁ, J., Z. ŠMAHEL, Stanislav KATINA and M. SEDLACKOVA

Basic information

Original name

Analysis of facial skeleton shape in patients with complete unilateral cleft lip and palate: geometric morphometry

Authors

VELEMÍNSKÁ, J. (203 Czech Republic, guarantor), Z. ŠMAHEL (203 Czech Republic), Stanislav KATINA (703 Slovakia, belonging to the institution) and M. SEDLACKOVA (203 Czech Republic)

Edition

Acta chirurgiae plasticae, Praha, Česká lékařská společnost J.E.Purkyně, 2006, 0001-5423

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10103 Statistics and probability

Country of publisher

Czech Republic

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

URL

RIV identification code

RIV/00216224:14310/06:00061108

Organization unit

Faculty of Science

Keywords in English

complete unilateral cleft lip and palate; geometric morphometry

Abstract

V originále

The study is based on a longitudinal cephalometric follow-up of X-ray films of patients with a complete unilateral cleft lip and palate during puberty. Carthesian x, y coordinates of the total of 22 landmarks on the lateral films of 25 patients with the same diagnosis and therapy were established, which served as outcome data for shape analysis. The changes in facial shape experienced by patients between their 10th and 15th year were evaluated by the thin-plate splines (TPS) method. We used the TPS method to find a function which transforms the shape of the face at the age of 10 as well as the square TPS grid into the facial shape at the age of 15 years with the deformed TPS grid. With the help of Geometric PCA for Bookstein's coordinates we found individuals with different shapes who develop abnormally during puberty and whose development is not well predictable. During puberty the face becomes relatively elongated. The most pronounced deformation is caused by the shift of the first permanent molar anteriorly, or a relative shortening of the frontal part of the dental arch. In the anterior direction the position of landmarks changed only in the area of nose; the alveolar process shows retrusion. The position of the mandible in relation to the maxilla change mainly in the inferior direction; the mandibular angle shifts posteriorly. The shape of skeletal profile was compared with a group of patients with the same diagnosis who underwent different therapy.

Links

CZ.1.07/2.2.00/15.0203, interní kód MU

Name: Univerzitní výuka matematiky v měnícím se světě (Acronym: Univerzitní výuka matematiky)

Investor: Ministry of Education, Youth and Sports of the CR, 2.2 Higher education

Citovat

VELEMÍNSKÁ, J., Z. ŠMAHEL, Stanislav KATINA and M. SEDLACKOVA. Analysis of facial skeleton shape in patients with complete unilateral cleft lip and palate: geometric morphometry. Acta chirurgiae plasticae. Praha: Česká lékařská společnost J.E.Purkyně, 2006, vol. 48, No 1, p. 26-32. ISSN 0001-5423.

@article{1067021,
   author = {Velemínská, J. and Šmahel, Z. and Katina, Stanislav and Sedlackova, M.},
   article_location = {Praha},
   article_number = {1},
   keywords = {complete unilateral cleft lip and palate; geometric morphometry},
   language = {eng},
   issn = {0001-5423},
   journal = {Acta chirurgiae plasticae},
   title = {Analysis of facial skeleton shape in patients with complete unilateral cleft lip and palate: geometric morphometry},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/16722348},
   volume = {48},
   year = {2006}
}

TY  - JOUR
ID  - 1067021
AU  - Velemínská, J. - Šmahel, Z. - Katina, Stanislav - Sedlackova, M.
PY  - 2006
TI  - Analysis of facial skeleton shape in patients with complete unilateral cleft lip and palate: geometric morphometry
JF  - Acta chirurgiae plasticae
VL  - 48
IS  - 1
SP  - 26-32
EP  - 26-32
PB  - Česká lékařská společnost J.E.Purkyně
SN  - 00015423
KW  - complete unilateral cleft lip and palate
KW  - geometric morphometry
UR  - http://www.ncbi.nlm.nih.gov/pubmed/16722348
N2  - The study is based on a longitudinal cephalometric follow-up of X-ray films of patients with a complete unilateral cleft lip and palate during puberty. Carthesian x, y coordinates of the total of 22 landmarks on the lateral films of 25 patients with the same diagnosis and therapy were established, which served as outcome data for shape analysis. The changes in facial shape experienced by patients between their 10th and 15th year were evaluated by the thin-plate splines (TPS) method. We used the TPS method to find a function which transforms the shape of the face at the age of 10 as well as the square TPS grid into the facial shape at the age of 15 years with the deformed TPS grid. With the help of Geometric PCA for Bookstein's coordinates we found individuals with different shapes who develop abnormally during puberty and whose development is not well predictable. During puberty the face becomes relatively elongated. The most pronounced deformation is caused by the shift of the first permanent molar anteriorly, or a relative shortening of the frontal part of the dental arch. In the anterior direction the position of landmarks changed only in the area of nose; the alveolar process shows retrusion. The position of the mandible in relation to the maxilla change mainly in the inferior direction; the mandibular angle shifts posteriorly. The shape of skeletal profile was compared with a group of patients with the same diagnosis who underwent different therapy.
ER  -

VELEMÍNSKÁ, J., Z. ŠMAHEL, Stanislav KATINA and M. SEDLACKOVA. Analysis of facial skeleton shape in patients with complete unilateral cleft lip and palate: geometric morphometry. \textit{Acta chirurgiae plasticae}. Praha: Česká lékařská společnost J.E.Purkyně, 2006, vol.~48, No~1, p.~26-32. ISSN~0001-5423.

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