Prevalence and risk factors of tooth discolouration after orthognathic surgery: a retrospective study of 1455 patients.
This study was conducted to evaluate the prevalence of tooth discolouration and to examine the factors that may pose a higher risk for tooth discolouration after orthognathic surgery. This was a retrospective study of 1455 orthognathic surgeries. The following data were collected for analysis: presence of discoloured teeth, sex, age at operation, the extent of the surgical displacement of the maxilla, and whether patients had undergone genioplasty, zygomaplasty, or descending palatine artery (DPA) ligation. Out of 1339 patients who underwent double-jaw surgery, 49 received root canal treatment due to tooth discolouration. No tooth discolouration was found in the 116 patients undergoing single-jaw surgery. DPA ligation, genioplasty, and mandibular sub-apical osteotomy were associated with a significant risk of tooth discolouration. Patients should be informed preoperatively of the possibility of tooth discolouration. Additionally, the DPA should be preserved during Le Fort I osteotomy to reduce the risk of tooth discolouration.
Department of Oral and Maxillofacial Surgery, Dental Centre, Chung-Ang University Hospital, Seoul, Republic of Korea. Electronic address: davidjoy76@gmail.com.
U-L
UL
Lee
Department of Oral and Maxillofacial Surgery, Dental Centre, Chung-Ang University Hospital, Seoul, Republic of Korea.
E-J
EJ
Lee
Department and Research Institute of Dental Biomaterials and Bioengineering, Yonsei University College of Dentistry, Seoul, Republic of Korea.
H-Y
HY
Seo
Department of Endodontics, Dental Centre, Chung-Ang University Hospital, Seoul, Republic of Korea.
S-H
SH
Han
Department of Orthodontics, Dental Centre, Chung-Ang University Hospital, Seoul, Republic of Korea.
W-C
WC
Choi
Department of Oral and Maxillofacial Surgery, Dental Centre, Chung-Ang University Hospital, Seoul, Republic of Korea.
Y-J
YJ
Choi
D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008437:Maxilla; D056948:Orthognathic Surgical Procedures / Q000009:adverse effects* / Q000706:statistics & numerical data; D011183:Postoperative Complications / Q000453:epidemiology* / Q000209:etiology; D015995:Prevalence; D012189:Retrospective Studies; D012307:Risk Factors; D014075:Tooth Discoloration / Q000453:epidemiology* / Q000209:etiology
Le Fort I osteotomy; descending palatine artery; genioplasty; orthognathic surgery; pulp necrosis; segmental osteotomy; tooth discolouration; zygomaplasty