@article{oai:kanazawa-u.repo.nii.ac.jp:00013777,
 author = {Ueki, Koichiro and Okabe, Katsuhiko and Moroi, Akinori and Marukawa, Kohei and Sotobori, Megumi and Ishihara, Yuri and Nakagawa, Kiyomasa},
 issue = {8},
 journal = {International Journal of Oral and Maxillofacial Surgery},
 month = {Aug},
 note = {The purpose of this study was to compare postoperative changes in maxillary stability after Le Fort I osteotomy in three groups: with an unsintered hydroxyapatite (u-HA)/poly-l-lactic acid (PLLA) plate; a PLLA plate; and a titanium plate. Subjects comprised 60 Japanese patients diagnosed with mandibular prognathism. All patients underwent Le Fort I osteotomy and bilateral sagittal split ramus osteotomy. All patients were randomized in groups of 20 to a u-HA/PLLA group, a PLLA plate group and a titanium plate group. Changes in postoperative time intervals between the plate groups were compared using lateral and posteroanterior cephalography. The uHA/PLLA group had significantly larger values than the PLLA group regarding change of mx1-S perpendicular to SN between 3 and 12 months (T3) (P = 0.0269). The uHA/PLLA group had a significantly larger value than the PLLA group regarding change of S-A perpendicular to SN between baseline and 1 month (T1) (P = 0.0257). There was no significant difference in the other measurements. This study suggests that maxillary stability with satisfactory results could be obtained in the u-HA/PLLA, PLLA plate and titanium plate groups, although there was a slight difference between the u-HA/PLLA and PLLA plate systems in Le Fort I osteotomy. © 2012 International Association of Oral and Maxillofacial Surgeons.},
 pages = {942--948},
 title = {Maxillary stability after le Fort i osteotomy using three different plate systems},
 volume = {41},
 year = {2012}
}