THE EFFECTS OF FRANKELS FUNCTION REGULATOR (FR-4) THERAPY ON THE TREATMENT OF ANGLE CLASS-I SKELETAL ANTERIOR OPEN BITE MALOCCLUSION


ERBAY E. F. , UGUR T., ULGEN M.

AMERICAN JOURNAL OF ORTHODONTICS AND DENTOFACIAL ORTHOPEDICS, cilt.108, ss.9-21, 1995 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Cilt numarası: 108 Konu: 1
  • Basım Tarihi: 1995
  • Doi Numarası: 10.1016/s0889-5406(95)70061-7
  • Dergi Adı: AMERICAN JOURNAL OF ORTHODONTICS AND DENTOFACIAL ORTHOPEDICS
  • Sayfa Sayıları: ss.9-21

Özet

The present study attempts to evaluate cephalometrically the effects of Frankel's function regulator (FR-4) appliance on the treatment of Angle Class I skeletal anterior open bite malocclusion. Forty Turkish children (26 girls and 14 boys), with Angle Class I skeletal anterior open bite, were randomly divided into two groups of 20 (13 girls and 7 boys). Patients who had not undergone treatment served as the control group, whereas a second group was treated with lip-seal training and the FR-4 appliance. Chronologic mean decimal age at initial period of the investigation was 8.7 years in the treated group, and 8.9 years in the control group. Treatment and observation periods were 2 years. Investigation was carried out on lateral cephalograms taken before and after the study period. The results indicate that a spontaneous downward and backward growth direction of the mandible observed in the control group could be changed to a upward and forward direction by FR-4 therapy. The skeletal anterior open bite was successfully corrected through upward and forward mandibular rotation.