Comparative study on the influence of anterior and posterior scars of hard palate on maxillary growth after cleft palate surgery: a three-dimensional finite element analysis

doi:10.7518/hxkq.2022.02.013

Abstract

Abstract: Objective

This study aimed to compare the inhibition of anterior and posterior scars of the hard palate on maxillary growth after cleft palate surgery.

Methods

Ansys was used to establish two 3D finite element models of maxilla with complete and incomplete cleft palate. The palatal scar force with same magnitude and direction but different areas was applied in four groups in the two models. The loading force was applied to 1/4 of the anterior oral surface of the hard palate (group 1), 1/4 of the middle and anterior oral surface of the hard palate (group 2), 1/4 of the middle and posterior oral surface of the hard palate (group 3), and 1/4 of the posterior oral surface of the hard palate (group 4). The displacement of each group after loading was analyzed and compared.

Results

In the two models, maxillary deformation occurred in all groups. The total displacement and 3D displacement comparison of each group was arranged as follows: group 1>group 2>group 3>group 4.

Conclusion

Scars from different parts of the hard palate after cleft palate surgery can inhibit maxillary growth in a 3D direction. The anterior scars have more serious inhibition than the posterior scars.

Key words: palatal scar, anterior and posterior parts, maxillary growth, three-dimensional finite element

CLC Number:

R 782.2⁺2

Huang Wei, Zhang Xiao, Li Man, Ning Chunliu, Wu Shanshan, Li Xiangjun. Comparative study on the influence of anterior and posterior scars of hard palate on maxillary growth after cleft palate surgery: a three-dimensional finite element analysis[J]. West China Journal of Stomatology, 2022, 40(2): 210-217.

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组别		总位移	X轴方向位移	Y轴方向位移	Z轴方向位移
第一组	左侧	0.291 646	0.199 941	0.128 625	0.187 383
	右侧	0.275 444	0.208 610	0.103 661	0.172 642
第二组	左侧	0.190 062	0.134 927	0.077 364	0.111 420
	右侧	0.201 242	0.155 676	0.061 868	0.120 996
第三组	左侧	0.115 965	0.088 634	0.028 329	0.062 583
	右侧	0.130 461	0.104 965	0.036 056	0.075 339
第四组	左侧	0.057 754	0.053 321	0.005 593	0.020 285
	右侧	0.064 974	0.057 149	0.005 087	0.034 725

组别		总位移	X轴方向位移	Y轴方向位移	Z轴方向位移
第一组	左侧	0.204 182	0.007 369	0.151 422	0.144 163
	右侧	0.192 839	0.009 015	0.142 930	0.132 426
第二组	左侧	0.145 170	0.006 762	0.104 542	0.101 689
	右侧	0.137 527	0.008 077	0.098 696	0.093 384
第三组	左侧	0.080 874	0.003 674	0.059 712	0.056 119
	右侧	0.076 381	0.004 949	0.056 318	0.051 518
第四组	左侧	0.027 531	0.000 518	0.021 613	0.018 740
	右侧	0.026 002	0.001 517	0.020 295	0.017 182

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