Syndromes Flashcards
Define congenital anomalies
structural or functional anomalies that occur during intrauterine life and
can be identified prenatally, at birth, or sometimes may only be detected later in infancy
Define deformation
Result of a mechanical defect without basic morphogenic defect
Define disruption
Result of the destruction of a structure normally formed
Define malformation
Intrinsic alteration of the affected tissue
Define dysplasia
Result of the differentiation and organization of a tissue
Genetic factors make up ____% of congenital malformations
90%
Environmental factors make up ____% of congenital malformations
1-%
What types of drugs can contribute to congenital malformations? (5)
- alcohol
- anticonvulsants
- antithyroid
- lithium
- thalidomine
What congenital infections can contribute to congenital malformations? (5)
- Toxoplasmosis
- rubeola
- CMV
- herpes
- syphilis
What maternal disorders can contribute to congenital malformations? (3)
- Diabetes
- Phenylketonuria
- Maternal hyperthermia
What physical agent can contribute to congenital malformations?
Ionizing radiation
The most frequent congenital malformations are? What are they related to? (3)
Cleft palate and Craniosynostosis
May or may not be associated to syndromes
Cleft palate makes up ____% of the total craniofacial malformations
15
Cleft palate affects ____ of births. Frequently in which ethnicities? (3)
1/1000 births.
Frequently in american and asian indians
What causes cleft palate?
Lack of coalescence between embryonic facial processes: No
union of nasomedial and maxillary process.
How many times is the palate formed?
Twice
When are the different palate formations?
• Primary palate: at the 6th week.
• Secondary palate: posterior part of the palate formed at
the 8th week
What is cleft lip?
Can range from a little notch in the coloured part of the lip to a
complete separation of the upper lip which can extend up and into the nose
What does complete cleft lip mean?
Meaning the cleft goes up into the nose
What is cleft palate?
A gap in the roof of the mouth
What divides the primary and secondary palate?
Incisive foramen
What was Victor Spina’s classification of cleft palate? (2)
- In function of the anatomical extension of the fissures
- embryonic origin
What are Victor Spina’s fissures ? (3)
- Transforament cleft
- Post foramen cleft
- Preforamen cleft
What are the affected areas for the transforamen cleft? (4)
- lip
- dental arch
- hard and soft palate
- up to the uvula
The transforamen cleft promotes…
total communication between nasal and oral cavities
The transforamen cleft can be…
unilateral or bilateral
What are the affected areas for the post-foramen cleft ?
Posterior palate
What are the affected areas for the pre-foramen cleft ?
- lips
- primary teeth up to the incisor foramen
Clinical manifestations of preforamen cleft?
Great diversity of clinical manifestations
What is keith’s scar? (2)
- Cut in cutaneous border of the lip
- seen in preforamen cleft
What happens in the pre-foramen cleft?
Rupture of maxilla & primary palate until the incisive foramen
Preforamen cleft laterality? (3)
- Unilateral
- bilateral
- medium (lip filtrum)