Systemic and congenital factors that influence the process of eruption teeth
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Systemic and congenital factors that influence the process of eruption teeth

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  • 1. Systemic and CongenitalFactors That Influence theProcess of eruption teeth By Amin Abusallamah
  • 2. Trisomy 21 syndrome (down syndrome)• (Down syndrome [DS]) is one of the congenital anomalies in which delayed eruption of the teeth frequently occurs.• A study of 127males and 128 females with DS by Ondarza et al found that, on average, 6 primary teeth were delayed in down syndrome eruption in boys and 11 primary teeth were delayed in girls.
  • 3. Cleidocranial dysplasia• A rare congenital syndrome that has dental significance.• The development of the dentition is delayed. Complete primary dentition at 15 years of age resulting from delayed resorption of the deciduous teeth and delayed eruption of the permanent teeth is not uncommon .Primary dentition isstill present at 15 years of age.
  • 4. Hypothyroidism• hypothyroidism is the result of an absence or under- development of the thyroid gland and insufficient levels of thyroid hormone• The teeth are normal in size but are crowded in jaws that are smaller than normal.
  • 5. Achondroplastic dwarfism• This condition may be related to the malocclusion and crowding of the Delayed eruption of the teeth has been linked to teeth.
  • 6. Hypopituitarism• A pronounced deceleration of the growth of the bones and soft tissues of the body will result from a deficiency in secretion of the growth hormone.• Delayed eruption of the dentition is characteristic. In severe cases the primary teeth do not undergo resorption but instead may be retained throughout the life of the person .
  • 7. Other causes• fibromatosis gingivae .• Albright hereditary osteodystrophy,• Nutrition• Vitamin D-resistant rickets• Amelogenesis imperfecta• Dentin dysplasia
  • 8. Thank you Reverences:• Mccdonald`s Dentistry for the Child and Adolescent• Chapter - 9• Pages : 190 - 200