TY - JOUR
T1 - Interproximal bone in maxillary anterior teeth in subjects with Class III facial deformity
T2 - are there options for segmental maxillary osteotomy in “surgery first”?
AU - Brito, L.
AU - Olate, S.
AU - Villa, J.
AU - Navarro, P.
AU - Haidar, Z. S.
AU - de Moraes, M.
N1 - Funding Information:
This study was approved by the Scientific Bioethics Committee of the Universidad de La Frontera (protocol no 016/15).
Publisher Copyright:
© 2019 The British Association of Oral and Maxillofacial Surgeons
PY - 2019/2
Y1 - 2019/2
N2 - Our aim was to give a morphometric description of the interproximal bone between the anterior maxillary teeth of subjects with class III facial deformity, who were candidates for segmented Le Fort I osteotomy. We measured the width of the interproximal bone from the upper right canine to the upper left canine in cone-beam computed tomographic images of 35 subjects, and identified five interproximal areas of measurement. The lower and upper measurements were established 5 mm and 10 mm from the cervical crest of the interproximal bone. A paired samples t test and Pearson's correlation coefficient were applied and probabilities of less than 0.05 were accepted as significant. In all the scans of interproximal bone, the apical zone was significantly wider than the inferior zone (p < 0.001). The area between the central incisors was the widest, with a mean (SD) of 2.42 (0.68) mm in the lower, and 4.27 (0.99) mm in the upper, region followed by the space between the canines and lateral incisors. The minimum interproximal spaces in the lowest area were between 1.1 and 1.5 mm, which suggested the potential for damage to the teeth during segmental osteotomy. The interproximal spaces were at potential risk of dental and periodontal injuries, and the area between the central incisors seemed to be most suited to interproximal osteotomies in “surgery first”.
AB - Our aim was to give a morphometric description of the interproximal bone between the anterior maxillary teeth of subjects with class III facial deformity, who were candidates for segmented Le Fort I osteotomy. We measured the width of the interproximal bone from the upper right canine to the upper left canine in cone-beam computed tomographic images of 35 subjects, and identified five interproximal areas of measurement. The lower and upper measurements were established 5 mm and 10 mm from the cervical crest of the interproximal bone. A paired samples t test and Pearson's correlation coefficient were applied and probabilities of less than 0.05 were accepted as significant. In all the scans of interproximal bone, the apical zone was significantly wider than the inferior zone (p < 0.001). The area between the central incisors was the widest, with a mean (SD) of 2.42 (0.68) mm in the lower, and 4.27 (0.99) mm in the upper, region followed by the space between the canines and lateral incisors. The minimum interproximal spaces in the lowest area were between 1.1 and 1.5 mm, which suggested the potential for damage to the teeth during segmental osteotomy. The interproximal spaces were at potential risk of dental and periodontal injuries, and the area between the central incisors seemed to be most suited to interproximal osteotomies in “surgery first”.
KW - Orthognathic surgery
KW - Segmental osteotomy
KW - Surgery first
UR - http://www.scopus.com/inward/record.url?scp=85059341025&partnerID=8YFLogxK
U2 - 10.1016/j.bjoms.2018.10.287
DO - 10.1016/j.bjoms.2018.10.287
M3 - Article
C2 - 30612839
AN - SCOPUS:85059341025
SN - 0266-4356
VL - 57
SP - 140
EP - 144
JO - British Journal of Oral and Maxillofacial Surgery
JF - British Journal of Oral and Maxillofacial Surgery
IS - 2
ER -