Inclusion Criteria:  Patients aged 18 to 22 years old. Permanent dentition. Class I Bimaxillary protrusion and class II devision 1 patients. Good oral hygiene.  Exclusion Criteria:  Medically compromised patients. Chronic renal failure and hormonal disorders as thyroid and parathyroid. Regular use of steroids, barbiturates, anticonvulsants drugs, and thyroid hormone replacements. Tobacco smoking. Any disease or metabolic disorder that can affect bone physiology