title: Occlusion-Fit V-Line Guide and Gooseneck Saw for Safe and Accurate Mandibuloplasty in Asians.
abstract: BACKGROUND
  A slender or slim face with narrow facial features is considered esthetically appealing in Asian people. Plastic surgery to obtain an oval face, called a 'V-line,' is popular among young people.
  
  
  METHODS
  A total of 20 Korean patients were included in this study. The patients underwent mandibular anguloplasty with three-dimensional computer-aided design and manufacturing surgical guides that were accurately fitted to the upper and lower teeth, allowing for precise replication of a virtual surgery during a real surgical procedure.
  
  
  RESULTS
  There were no significant complications, including severe bleeding, facial nerve injury, or airway obstruction. All patients were satisfied with the esthetic and functional results, except for one who was neutral toward the result. The mean satisfaction score was 4.75, which was between 'satisfied' and 'very satisfied.'
  
  
  CONCLUSIONS
  The V-line guide and gooseneck saw allowed for safe and fast resection of bone in the mandibular angle area. This technique provides consistent results during surgery as well as minimizing surgical complications.
  
  
  METHODS
  This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors http://www.springer.com/00266 .
authors.affiliation: Department of Dentistry, Korea University Anam Hospital, Seoul, Republic of Korea.
authors.forename: In-Seok
authors.initials: IS
authors.lastname: Song
authors.affiliation: Department and Research Institute of Dental Biomaterials and Bioengineering, Yonsei University College of Dentistry, Seoul, Republic of Korea.
authors.forename: Jae-Sung
authors.initials: JS
authors.lastname: Kwon
authors.affiliation: Department of Oral and Maxillofacial Surgery, Chung-Ang University College of Medicine, 84 Heukseok-ro, Dongjak-gu, Seoul, 06911, Republic of Korea.
authors.forename: Young-Jun
authors.initials: YJ
authors.lastname: Choi
authors.affiliation: Department of Dentistry, Korea University Anam Hospital, Seoul, Republic of Korea.
authors.forename: Jae-Jun
authors.initials: JJ
authors.lastname: Ryu
authors.affiliation: Department of Oral and Maxillofacial Surgery, Chung-Ang University College of Medicine, 84 Heukseok-ro, Dongjak-gu, Seoul, 06911, Republic of Korea. davidjoy76@gmail.com.
authors.forename: Ui-Lyong
authors.initials: UL
authors.lastname: Lee
mesh_terms: D000328:Adult; D044466:Asian People; D015331:Cohort Studies; D017076:Computer-Aided Design; D004954:Esthetics; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D021621:Imaging, Three-Dimensional; D008297:Male; D063168:Mandibular Osteotomy / Q000379:methods*; D061214:Patient Safety; D019651:Plastic Surgery Procedures / Q000379:methods; D056910:Republic of Korea; D012189:Retrospective Studies; D018570:Risk Assessment; D013518:Surgery, Plastic / Q000379:methods*; D016896:Treatment Outcome; D055815:Young Adult
keywords: Computer simulation; Computer-aided design and manufacturing; Mandibular osteotomy; Three-dimensional imaging