Remodeling of the antegonial angle region in the human mandible: a panoramic radiographic cross-sectional study.

OBJECTIVES This study analyzed changes in the antegonial region in relation to age, gender, and dental status. STUDY DESIGN A total of one thousand patients (five hundred males and five hundred females), who were prescribed panoramic radiograph for various purposes were included in the study. The patients were categorized according to age, gender and dentition status. Panoramic radiographs were traced and antegonial angles and depths were measured. RESULTS A trend of decrease in the antegonial angle and increase in antegonial depth with age was observed in both males and females. Furthermore there were differences between right and left side antegonial angle and depth, with left side angle more than right and right side depth more than left. There was a significant decrease in the values of antegonial angle and significant increase in the values of antegonial depth as the dentition status changed from completely dentulous to partially dentulous and from partially dentulous to completely edentulous state. CONCLUSIONS The antegonial angle decreases with the advancing age and thereby increases the antegonial depth. Similar trends are seen when teeth are lost. Furthermore there is an inherent asymmetry in the antegonial region in right and left side.

[1]  V. Rushton,et al.  Clinical justification of dental radiology in adult patients: a review of the literature. , 2007, Medicina oral, patologia oral y cirugia bucal.

[2]  F. Bonnel,et al.  Neural symmetry and functional asymmetry of the mandible , 2006, Surgical and Radiologic Anatomy.

[3]  K. Yamada,et al.  Mandibular antegonial and ramus notch depths and condylar bone change. , 2005, Journal of oral rehabilitation.

[4]  H. Devlin,et al.  Mandibular bone remodelling in adults: evaluation of panoramic radiographs. , 2004, Dento maxillo facial radiology.

[5]  A. Ainamo,et al.  Correlation of gonial angle size with cortical thickness, height of the mandibular residual body, and duration of edentulism. , 2004, The Journal of prosthetic dentistry.

[6]  F. Al-Sehaibany,et al.  The morphology of the mandibular antegonial notches and facial symmetry. , 2002, The Journal of clinical pediatric dentistry.

[7]  T. Southard,et al.  Evaluation of antegonial notch depth for growth prediction. , 2002, American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.

[8]  J Wolf,et al.  Effect of head positioning in panoramic radiography on vertical measurements: an in vitro study. , 1996, Dento maxillo facial radiology.

[9]  I. Stander,et al.  Dimensional differences in the craniofacial morphologies of groups with deep and shallow mandibular antegonial notching. , 1996, The Angle orthodontist.

[10]  D B Svanaes,et al.  Reproducibility of rotational panoramic radiography: mandibular linear dimensions and angles. , 1986, American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.

[11]  D. Enlow,et al.  The remodeling of the edentulous mandible. , 1976, The Journal of prosthetic dentistry.

[12]  M. Becker,et al.  Antegonial notching of the mandible: an often overlooked mandibular deformity in congenital and acquired disorders. , 1976, Radiology.