title: Impact of malocclusion on oral health-related quality of life in young adults.
abstract: OBJECTIVE
  To assess oral health-related quality of life (OHRQoL) in young adult patients with malocclusion and to measure the association between orthodontic treatment need and OHRQoL.
  
  
  METHODS
  The study sample comprised 190 young adults aged 18 to 25 years who were attending orthodontic clinics at the Faculty of Dentistry. The Index of Orthodontic Treatment Need-Dental Health Component was used to measure orthodontic treatment need. Each participant was assessed for OHRQoL before and after treatment by using the Oral Health Impact Profile, Chinese version (OHIP-14).
  
  
  RESULTS
  Patients who had little or no, borderline, and actual need for orthodontic treatment represented 21.6%, 50.5%, and 27.9% of the total sample, respectively. OHRQoL (total OHIP-14 score and score for each domain) improved after treatment (P < .05). Significant differences in summary OHIP-14 scores were apparent with respect to orthodontic treatment need. Participants with high treatment need reported a significantly greater negative impact on the overall OHRQoL score. The greatest impact was seen in the psychological discomfort domain and the psychological disability domain.
  
  
  CONCLUSIONS
  Malocclusion has a significant negative impact on OHRQoL. This is greatest for the psychological discomfort and psychological disability domains. The orthodontic treatment of malocclusion improves OHRQoL of patients.
authors.affiliation: a  Associate Professor, Department of Stomatology, Nanshan Affiliated Hospital of Guangdong Medical College, Shenzhen, Guangdong, China.
authors.forename: Mu
authors.initials: M
authors.lastname: Chen
authors.affiliation: b  Attending Physician, Department of Orthodontics, Guanghua School of Stomatology and Institute of Stomatological Research, Sun Yat-Sen University, Guangzhou, China.
authors.forename: Zhi-Cai
authors.initials: ZC
authors.lastname: Feng
authors.affiliation: c  Professor, Department of Stomatology, Nanshan Affiliated Hospital of Guangdong Medical College, Shenzhen, Guangdong, China.
authors.forename: Xue
authors.initials: X
authors.lastname: Liu
authors.affiliation: a  Associate Professor, Department of Stomatology, Nanshan Affiliated Hospital of Guangdong Medical College, Shenzhen, Guangdong, China.
authors.forename: Zheng-Ming
authors.initials: ZM
authors.lastname: Li
authors.affiliation: d  Associate Professor, Department of Orthodontics, Guanghua School of Stomatology and Institute of Stomatological Research, Sun Yat-Sen University, Guangzhou, China.
authors.forename: Bin
authors.initials: B
authors.lastname: Cai
authors.affiliation: e  Professor, Department of Orthodontics, Guanghua School of Stomatology and Institute of Stomatological Research, Sun Yat-Sen University, Guangzhou, China.
authors.forename: Da-Wei
authors.initials: DW
authors.lastname: Wang
mesh_terms: D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008310:Malocclusion / Q000523:psychology* / Q000628:therapy*; D009909:Oral Health; D011788:Quality of Life / Q000523:psychology*; D016896:Treatment Outcome; D055815:Young Adult
keywords: Malocclusion; Oral health–related quality of life; Orthodontic treatment needs