The aim of the study is to quantify the differences in the diagnostic relationships between Centric occlusion versus maximum intercuspation in adult orthodontic patients with Cetric relation recoded using both conventional method utilizing semi-adjustable articulator and face bow record in addition to digital method proposed by Radu et al for finding and recording CR using a dental intraoral scanner with a leaf gauge

Study design Cross-sectional study PICO Components P: Adult orthodontic patient I: Centric occlusion C: Maximum intercuspation

O: -orthodontic relations:

Molar relation Canine relation Incisor relation Overjet Overbite Midline discrepancy

Inclusion Criteria:

orthodontic patient having full permanent dentition

Exclusion Criteria:

• patients who had undergone previous orthodontic treatment, and syndromic patients, retained primary teeth , teeth heavily restored

rthodontic patient having full permanent dentition