DOI:

10.37988/1811-153X_2019_1_46

Comparative characteristics of the maxillofacial parameters of patients with β-thalassemia major and distal occlusion

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Authors

  • R.V. Shadlinskaya 1, PhD in Medical Sciences, associate professor of the Dentistry Department
  • Z.V. Gasymova 1, PhD in Medical Sciences, associate professor of the Dentistry Department
  • O.F. Gasymov 2, PhD in Medical Sciences, dentist
  • 1 Azerbaijan Medical University, AZ1012, Baku, Azerbaijan
  • 2 “Ortho-1” Dental Clinic, AZ1000, Baku, Azerbaijan

Abstract

Patients with β-thalassemia major have a specific structure of the maxillofacial area and the need for orthodontic treatment of such patients is quite high. Parameters of profile cephalometric radiographs of patients with β-thalassemia major and patients with distal occlusion with insufficient mandibular development were compared. A contingent with a neutral occlusion (I class according to Angle) was examined in the control group. In patients with β-thalassemia major, an anomaly of class II was found, which is mainly interconnected with a decrease in the size of the mandible body length (Go-Gn; p<0.001) and a decrease in the height of the mandible ramus - Ar-Go. There was also noted a statistically significant increase in the angular parameters of NGoMe, NSL-ML, ML-NL, ArGoMe and angular values of Bjork, which indicates a predominantly vertical pattern of facial skeletal growth. An increase of cranial base angle NSBa in the main group indicates a slight decrease in the size of the cranium in patients with β-thalassemia major. In patients with β-thalassemia who are on regular blood transfusions, there is a decrease in the height of the ramus and the length of the mandible body, as well as a slight increase in the maxillary bone in the sagittal direction, which does not affect the position of the maxilla.

Key words:

thalassemia, distal occlusion, cephalometry, craniofacial deformities

For Citation

[1]
Shadlinskaya R.V., Gasymova Z.V., Gasymov O.F. Comparative characteristics of the maxillofacial parameters of patients with β-thalassemia major and distal occlusion. Clinical Dentistry (Russia).  2019; 1 (89): 46—50. DOI: 10.37988/1811-153X_2019_1_46

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Published on

March 1, 2019