title: Long term stability following genioplasty: a cephalometric study.
abstract: BACKGROUND
  A receding chin associated with an orthognathic mandible is a common situation and surgical changes in chin position are often required to improve the overall harmony of the face. Genioplasty is one such procedure. Stability of hard and soft tissue changes following genioplasty on a long term basis needs to be assessed. Studies on the stability of hard and soft tissue changes following genioplasty on a short term basis have revealed it as a procedure with good stability. This study is done to assess the stability of hard and soft tissue changes following genioplasty on a long term basis.
  
  
  METHODS
  Pre-surgical, postsurgical and long term post-surgical cephalograms of 15 cases treated by vertical reduction augmentation genioplasty were obtained. Paired t-test was used to compare the changes between pre-surgical, postsurgical and long term postsurgical cephalograms.
  
  
  RESULTS
  Findings of this study demonstrated that genioplasty is a stable procedure. After long term follow-up period, there was a relapse of 1.5 mm at the pogonion accounting for 24% of the surgical advancement. This is attributed to the remodeling that occurs at the surgical site, but not the instability due to the surgical procedure.
  
  
  CONCLUSIONS
  With the present study, it can be concluded that vertical reduction and advancement genioplasty can be considered as an adjunctive procedure that produces predictable results and the bony and soft tissue stability were generally very good.
authors.affiliation: Reader, Department of Orthodontics, G. Pullareddy Dental College, Kurnool, Andhra Pradesh, India.
authors.forename: B Lakshman
authors.initials: BL
authors.lastname: Kumar
authors.affiliation: Assistant Professor, Department of Orthodontics, G. Pullareddy Dental College, Kurnool, Andhra Pradesh, India.
authors.forename: G Kranthi Praveen
authors.initials: GK
authors.lastname: Raju
authors.affiliation: Reader, Department of Orthodontics, College of Dental Sciences, Davanagere, Karnataka, India.
authors.forename: N Dilip
authors.initials: ND
authors.lastname: Kumar
authors.affiliation: Assistant Professor, Department of Orthodontics, Narayana Dental College, Nellore, Andhra Pradesh, India.
authors.forename: G Vivek
authors.initials: GV
authors.lastname: Reddy
authors.affiliation: Private Practitioner, Ananthapur, Andhra Pradesh, India.
authors.forename: B Ravindra
authors.initials: BR
authors.lastname: Naik
authors.affiliation: Reader, Department of Pedodontics St. Joseph Dental College, Yeluru, Andhra Pradesh, India.
authors.forename: C Ravindranath
authors.initials: CR
authors.lastname: Achary
keywords: Genioplasty; hard tissue parameters; soft tissue parameters; stability