Evaluation of maxillary sinus sizes in adolescence of different sagittal skeletal patterns on cone-beam computed tomography images

doi:10.3877/cma.j.issn.1674-1366.2012.01.011

Abstract

Abstract:

Objective

To compare the maxillary sinus size in adolescence with different sagittal skeletal patterns and to investigate correlations between the maxillary sinus sizes and the dentofacial morphology by cone-beam computed tomography （CBCT）.

Methods

The CBCT radiographs were derived from subjects with skeletal Class Ⅰ， Class Ⅱ， and Class Ⅲmalocclusions， classified on the basis of the ANB angle. Each group consisted of 10 boys and 10 girls ranging in age from 12 to 16 years old. Each subject presented a normodivergent skeletal pattern. Three-dimensional maxillary sinus volumes and cross-sectional areas were measured by CBCT volume scans， and two-dimensional lateral cephalograms were created and analyzed.Maxillary sinus lengths， widths， heights， cross sectional areas and volumes were compared among the three groups. Analysis of variance and Pearson's correlation analysis about maxillary sinus size with the dentofacial variables were performed for statistical comparison.

Results

Significant differences in the maxillary sinus lengths， height， widths， cross sectional areas and volumes were shown in different sagittal skeletal groups， with Class Ⅱ＞ClassⅠ （P ＜0.05） and Class Ⅱ＞Class Ⅲ（P ＜0.05）. The maxillary sinus size had positive correlation with S-N， N-Ar， ANB， U1-ANS， UAFH（P ＜0.05）， and had negative correlation with SNB （P ＜0.05）.

Conclusions

The patients in Class Ⅱsagittal skeletal groups had larger maxillary sinus. The dimension of the maxillary sinus had correlation with the sagittal skeletal jaw relationship and the lengths of the cranial bases to some extent.

Key words: Sagittal skeletal pattern, Maxillary sinus, Cone-beam computed tomography

Jia-hua WENG, Bin CAI, Li-xiang MAI, Xushun HE, Da-wei WANG. Evaluation of maxillary sinus sizes in adolescence of different sagittal skeletal patterns on cone-beam computed tomography images[J]. Chinese Journal of Stomatological Research(Electronic Edition), 2012, 6(01): 65-72.

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Figures/Tables 8

References 18

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矢状骨面型	例数	性别		t	P
矢状骨面型	例数	男	女	t	P
Ⅰ类	20	13.3±1.65	13.6±1.16	0.471	0.643
Ⅱ类	20	13.4±1.35	13.9±1.45	-0.798	0.435
Ⅲ类	20	14.4±1.58	13.6±1.71	1.086	0.292

矢状骨面型	例数	性别		t	P
矢状骨面型	例数	男	女	t	P
Ⅰ类	20	13.3±1.65	13.6±1.16	0.471	0.643
Ⅱ类	20	13.4±1.35	13.9±1.45	-0.798	0.435
Ⅲ类	20	14.4±1.58	13.6±1.71	1.086	0.292

测量项目	矢状骨面型	均数	标准差	95%置信区间	F	P	两两比较结果
长度	Ⅰ类	33.57	2.07	32.59～34.53	13.72	＜0.001	Ⅰ类＞Ⅲ类^a
	Ⅱ类	35.81	2.19	34.78～36.83			Ⅱ类＞Ⅰ类^b
	Ⅲ类	31.53	3.30	29.99～33.08			Ⅱ类＞Ⅲ类^c
高度	Ⅰ类	35.12	2.66	33.87～36.36	22.24	＜0.001	Ⅱ类＞Ⅰ类^c
	Ⅱ类	40.58	3.17	39.10～42.06			Ⅱ类＞Ⅲ类^c
	Ⅲ类	34.00	4.07	32.06～35.87
宽度	Ⅰ类	24.54	3.22	23.03～26.04	8.67	0.001	Ⅱ类＞Ⅰ类^c
	Ⅱ类	28.07	2.32	26.98～29.15			Ⅱ类＞Ⅲ类^c
	Ⅲ类	24.61	3.52	22.97～26.26
截面积	Ⅰ类	581.26	67.20	550.11～613.01	22.95	＜0.001	Ⅱ类＞Ⅰ类^c
	Ⅱ类	716.03	77.87	679.59～752.47			Ⅱ类＞Ⅲ类^c
	Ⅲ类	567.79	83.43	528.74～606.84
容积	Ⅰ类	12.86	2.64	11.62～14.09	22.60	＜0.001	Ⅱ类＞Ⅰ类^c
	Ⅱ类	17.53	1.87	16.65～18.40			Ⅱ类＞Ⅲ类^c
	Ⅲ类	12.49	3.24	10.97～14.00

测量项目	矢状骨面型	均数	标准差	95%置信区间	F	P	两两比较结果
长度	Ⅰ类	33.57	2.07	32.59～34.53	13.72	＜0.001	Ⅰ类＞Ⅲ类^a
	Ⅱ类	35.81	2.19	34.78～36.83			Ⅱ类＞Ⅰ类^b
	Ⅲ类	31.53	3.30	29.99～33.08			Ⅱ类＞Ⅲ类^c
高度	Ⅰ类	35.12	2.66	33.87～36.36	22.24	＜0.001	Ⅱ类＞Ⅰ类^c
	Ⅱ类	40.58	3.17	39.10～42.06			Ⅱ类＞Ⅲ类^c
	Ⅲ类	34.00	4.07	32.06～35.87
宽度	Ⅰ类	24.54	3.22	23.03～26.04	8.67	0.001	Ⅱ类＞Ⅰ类^c
	Ⅱ类	28.07	2.32	26.98～29.15			Ⅱ类＞Ⅲ类^c
	Ⅲ类	24.61	3.52	22.97～26.26
截面积	Ⅰ类	581.26	67.20	550.11～613.01	22.95	＜0.001	Ⅱ类＞Ⅰ类^c
	Ⅱ类	716.03	77.87	679.59～752.47			Ⅱ类＞Ⅲ类^c
	Ⅲ类	567.79	83.43	528.74～606.84
容积	Ⅰ类	12.86	2.64	11.62～14.09	22.60	＜0.001	Ⅱ类＞Ⅰ类^c
	Ⅱ类	17.53	1.87	16.65～18.40			Ⅱ类＞Ⅲ类^c
	Ⅲ类	12.49	3.24	10.97～14.00

测量项目	上颌窦长度	上颌窦高度	上颌窦宽度	上颌窦截面积	上颌窦容积
前颅底长	0.231	0.342^a	0.116	0.208	0.283^c
后颅底长	-0.053	0.090	0.040	0.094	0.097
全颅底长	0.170	0.283^c	0.115	0.204	0.292^c
前鼻嵴-后鼻棘距离	0.229	0.180	0.080	0.223	0.204
SNA角	0.039	-0.196	-0.042	-0.021	-0.098
SNB角	-0.370^a	-0.301^c	-0.297^c	-0.430^b	-0.468^b
ANB角	0.543^b	0.204	0.365^a	0.565^b	0.536^b
腭平面角	0.134	0.083	0.094	0.120	0.137
上中切牙-前鼻嵴点距离	0.001	0.366^a	-0.021	0.220	0.326^c
磨牙-腭平面距离	0.406	0.336	0.183	0.143	0.063
前上面高	0.102	0.319^c	0.012	0.239	0.291^c
后上面高	-0.098	0.115	0.025	0.095	0.066

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