不同补偿间隙3D打印正颌手术𬌗板对咬合精度的影响

doi:10.7518/gjkq.2022061

Abstract

Abstract: Objective

This study aimed to assess the precision of 3D-printed orthognathic surgical splints (OSS) with different dental model offsets and explore the optimal offsets of OSS.

Methods

Ten resin models that met the standard of normal occlusion were selected, and the digital models were obtained by using an optical scanner. The research models were made by using a 3D photosensitive resin printer, and then the original digital models were obtained. Digital OSS with different offsets (0.00, 0.05, 0.10, 0.15, 0.20, and 0.25 mm groups) was designed for each model, and physical OSS was fabricated by 3D printing. The upper and lower dentition of each resin model was reoccluded in OSS with different offsets, and the deviation of the actual occlusion from the original occlusion in six dimensions of horizontal, sagittal, vertical, pitch, roll, and yaw was evaluated.

Results

1) The actual occlusion obtained by OSS without offsets (0.00 mm group) had deviation in six dimensions, and the deviation in vertical (1.044±0.181 mm) and pitch (1.738°±0.772°) dimensions was the largest. 2) In sagittal, vertical, pitch, and roll dimensions, the mean value of actual occlusal deviation gradually decreases with the increase of offsets. In the vertical and pitch dimensions, the actual occlusal deviation of the 0.15 mm group was significantly less than that of the 0.00, 0.05, and 0.10 mm groups (P<0.01), but no significant difference was found between the 0.20 mm and 0.25 mm groups (P>0.05). In addition, no significant difference in sagittal and roll dimensions was found among the groups (P>0.05). 3) In the horizontal and yaw dimensions, within the range of 0.00-0.20 mm, the mean value of actual occlusal deviation gradually decreased with the increase of offsets (P>0.05). However, the actual occlusal deviation of the 0.25 mm group was larger than that of the 0.20 mm group (P>0.05).

Conclusion

3D printed OSS with offsets can reduce the deviation of the actual occlusion. Among the parameters, 0.15 mm is the suitable option for generating OSS.

Key words: computer-aided technology, 3D printing, orthognathic surgical splints, offsets

CLC Number:

R 783

TrendMD:

Ma Jianbin,Xue Chaoran,Wang Peiqi,Li Bin,Bai Ding.. Effect of 3D printing orthognathic surgical splints with different dental model offsets on occlusal precision[J].Int J Stomatol, 2022, 49(3): 296-304.

Figures/Tables 11

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References 34

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维度	正向	负向
X	配准模型相对于参考模型位于坐标原点右侧	配准模型相对于参考模型位于坐标原点左侧
Y	配准模型相对于参考模型位于坐标原点前方	配准模型相对于参考模型位于坐标原点后方
Z	配准模型相对于参考模型位于坐标原点上方	配准模型相对于参考模型位于坐标原点下方
P	配准模型相对于参考模型位于坐标原点前上或后下	配准模型相对于参考模型位于坐标原点前下或后上
Q	配准模型相对于参考模型位于坐标原点左上或右下	配准模型相对于参考模型位于坐标原点左下或右上
R	配准模型相对于参考模型位于坐标原点左后或右前	配准模型相对于参考模型位于坐标原点左前或右后

ICC	水平向（X）	矢状向（Y）	垂直向（Z）	俯仰（P）	滚转（Q）	偏航（R）
测量方法	0.984	0.997	0.999	0.998	0.985	0.994
试验操作	0.967	0.935	0.968	0.965	0.932	0.920

补偿间隙	最大值			最小值			均值			标准差			P值
补偿间隙	X	Y	Z	X	Y	Z	X	Y	Z	X	Y	Z	X	Y	Z
0.00	0.174	0.186	1.421	0.021	0.011	0.813	0.075	0.121	1.044	0.051	0.050	0.181	0.106	0.827	0.542
0.05	0.198	0.172	1.095	0.012	0.063	0.413	0.072	0.109	0.743	0.054	0.041	0.217	0.125	0.296	0.576
0.10	0.086	0.220	0.712	0.001	0.011	0.123	0.035	0.104	0.388	0.033	0.071	0.218	0.050	0.713	0.272
0.15	0.115	0.218	0.544	0.011	0.012	0.003	0.030	0.077	0.176	0.041	0.063	0.175	0.069	0.056	0.124
0.20	0.056	0.248	0.266	0.002	0.001	0.012	0.028	0.074	0.113	0.017	0.075	0.101	0.591	0.103	0.056
0.25	0.164	0.221	0.155	0.006	0.001	0.005	0.058	0.072	0.066	0.047	0.076	0.049	0.194	0.063	0.437

补偿间隙/mm	最大值			最小值			均值			标准差			P值
补偿间隙/mm	P	Q	R	P	Q	R	P	Q	R	P	Q	R	P	Q	R
0.00	2.938	0.646	0.118	0.650	0.017	0.016	1.738	0.284	0.157	0.772	0.189	0.034	0.396	0.077	0.297
0.05	2.732	0.847	0.387	0.018	0.051	0.012	1.669	0.244	0.132	0.781	0.237	0.115	0.494	0.053	0.106
0.10	1.629	1.233	0.509	0.028	0.008	0.001	0.834	0.221	0.094	0.621	0.409	0.159	0.159	0.063	0.052
0.15	1.460	0.659	0.214	0.078	0.009	0.019	0.624	0.176	0.087	0.524	0.211	0.064	0.088	0.139	0.279
0.20	0.952	0.709	0.106	0.110	0.012	0.003	0.567	0.131	0.047	0.331	0.214	0.036	0.186	0.072	0.407
0.25	0.869	0.627	0.910	0.044	0.003	0.042	0.287	0.096	0.202	0.296	0.188	0.263	0.068	0.121	0.685

维度	补偿间隙/mm
维度	0.00	0.05	0.10	0.15	0.20	0.25
X/mm	0.071±0.051	0.072±0.054	0.035±0.033	0.056±0.041	0.028±0.017	0.058±0.047
Y/mm	0.083±0.050	0.109±0.041	0.104±0.071	0.077±0.063	0.077±0.075	0.072±0.076
Z/mm	1.044±0.181^☆◇△○	0.743±0.217^☆◇△○	0.388±0.218*^#◇△○	0.176±0.175*^#☆	0.113±0.100*^#☆	0.066±0.048*^#☆
P/°	1.738±0.772^☆◇△○	1.669±0.781^☆◇△○	0.834±0.621*^#	0.624±0.524*^#☆	0.567±0.331*^#☆	0.287±0.296*^#☆
Q/°	0.204±0.189	0.189±0.237	0.281±0.409	0.209±0.211	0.151±0.214	0.096±0.188
R/°	0.057±0.034	0.132±0.115	0.094±0.159	0.087±0.064	0.047±0.036	0.202±0.263

Effect of 3D printing orthognathic surgical splints with different dental model offsets on occlusal precision

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