Objective:To simulate and compare the impact of scar contraction force on maxillary alveolar bone displacement after cleft palate surgery in different regions of the palate.Methods:The same scar contraction force was applied to the grouping hard pal-ate area on the original finite element model of the maxilla with cleft palate,and calculations were performed in ANSYS 17.0.Divid-ed into four groups based on the applied force area:anterior half(group 1),posterior half(group 2),lateral half(group 3),and me-dial half(group 4).Nodes in the alveolar bone of the cleft and non-cleft sides were selected as observation points.The three-dimen-sional displacement of observation points was recorded and compared between groups.Results:The displacement of group 1＞group 3,4＞group 2(P＜0.01).Conclusion:Scars from different parts of the hard palate can lead to a decrease in the length,width,and height of the maxillary alveolar bone.Among them,the anterior scar has the most severe impact,followed by the medial and lateral scars,and the posterior scar has the smallest impact.

Objective:To simulate and compare the impact of scar contraction force on maxillary alveolar bone displacement after cleft palate surgery in different regions of the palate.Methods:The same scar contraction force was applied to the grouping hard pal-ate area on the original finite element model of the maxilla with cleft palate,and calculations were performed in ANSYS 17.0.Divid-ed into four groups based on the applied force area:anterior half(group 1),posterior half(group 2),lateral half(group 3),and me-dial half(group 4).Nodes in the alveolar bone of the cleft and non-cleft sides were selected as observation points.The three-dimen-sional displacement of observation points was recorded and compared between groups.Results:The displacement of group 1＞group 3,4＞group 2(P＜0.01).Conclusion:Scars from different parts of the hard palate can lead to a decrease in the length,width,and height of the maxillary alveolar bone.Among them,the anterior scar has the most severe impact,followed by the medial and lateral scars,and the posterior scar has the smallest impact.