Korean J Orthod.  2022 May;52(3):165-171. 10.4041/kjod21.259.

Occlusal deviations in adolescents with idiopathic and congenital scoliosis

Affiliations
  • 1State Key Laboratory of Military Stomatology National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Orthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, China.
  • 2Department of Thoracic Surgery, The Seventh Medical Center of PLA General Hospital, Beijing, China.
  • 3Department of Orthopedics, The Seventh Medical Center of PLA General Hospital, Beijing, China.
  • 4Department of Orthopedics, Xijing Hospital, The Fourth Military Medical University, Xi'an, China.
  • 5Department of Stomatology, The First Medical Center of PLA General Hospital, Beijing, China.
  • 6Department of Stomatology, The Seventh Medical Center of PLA General Hospital, Beijing, China.

Abstract


Objective
This cross-sectional study aimed to investigate the characteristics of malocclusions in scoliotic patients through clinical examinations.
Methods
Fifty-eight patients with idiopathic scoliosis (IS) and 48 patients with congenital scoliosis (CS) participated in the study. A randomly selected group of 152 orthopedically healthy children served as the control group. Standardized orthodontic and orthopedic examination protocols were used to record the occlusal patterns and type of scoliosis. Assessments were made by three experienced orthodontists and a spinal surgery team. The differences in the frequency distribution of occlusal patterns were evaluated by the chi-squared test.
Results
In comparison with patients showing IS, patients with CS showed a higher incidence of Cobb angle ≥ 45° (p = 0.020) and included a higher proportion of patients receiving surgical treatments (p < 0.001). The distribution of the Angle Class II subgroup was significantly higher in the IS (p < 0.001) and CS (p = 0.031) groups than in the control group. In comparison with the healthy controls, the CS and IS groups showed significantly higher (p < 0.05) frequencies of asymmetric molar and asymmetric canine relationships, upper and lower middle line deviations, anterior deep overbite, unilateral posterior crossbite, and canted occlusal plane, with the frequencies being especially higher in CS patients and to a lesser extent in IS patients.
Conclusions
Patients with scoliosis showed a high frequency of malocclusions, which were most obvious in patients with CS.

Keyword

Facial asymmetry; Dentofacial anomalies; Scoliosis; Malocclusion

Figure

  • Figure 1 X-ray and dental images of an 18-year-old female patient with congenital scoliosis and an Angle Class II subgroup classification. A, Full-length anteroposterior spine X-ray image showing a severely deformed and twisted spine. B, Dental image showing normal mandibular occlusion on the right side. C, Dental image showing an oblique occlusal plane. D, Dental image showing mandibular deviation on the left side.


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