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给１２只成年猕猴施行标准的ＬｅＦｏｒｔＩ型截骨术的同时，行右上前颌分块截骨术，分成单牙骨块和双牙骨块，井结扎两侧腭降动脉。另外用４只成年猕猴作为正常对照，不施行任何手术。术后采用放射性核素９９ｍＴｃ－ＭＤＰ对术后截骨块、牙髓血供作动态性研究。术后２ｈ截骨块、牙髓的血供分别比正常减少７２％～８２％、７４％～９３％，术后３个月比正常增加了５５％～１１４％、６％～３３％，６个月后截骨块血供恢复正常，与正常比无统计学差异。比较左、右两侧上颌截骨块和牙髓的血供无显著性差异，但６个月后牙髓的血供有下降趋势，是否可视为牙髓开始发生或已经发生病理组织学改变的一个信号仍有待于作更进一步研究。
Simultaneously with the standard LeFortI-type osteotomy, 12 adult macaques were treated with split-right-upper maxillary block osteotomy divided into single-tooth and double-tooth bones and ligation of the palatal arteries on both sides. In addition, 4 adult macaques were used as normal controls without any surgery. Postoperative radionuclide 99mTc-MDP osteotomy, pulp blood supply for dynamic study. The blood supply of osteotomy and dental pulp decreased by 72% ~ 82% and 74% ~ 93% respectively at 2 h after operation, and increased by 55% ~ 114% and 6% ~ 33% 6 After a few months, the blood supply of osteotomy returned to normal, with no significant difference from normal. Comparing the left and right maxillary osteotomy and dental pulp blood supply was no significant difference, but after 6 months of dental pulp blood supply decreased, whether it can be considered the beginning of dental pulp or histopathological changes have taken place A signal still needs further study.