A cone beam computed tomography study of canine alveolar morphology in different vertical skeletal types

doi:10.3877/cma.j.issn.1674-1366.2011.06.011

Abstract

Abstract:

Objective

To evaluate the difference of the canine positions among three different vertical skeletal types.

Methods

Eighty-four pre-treatment cone beam computed tomography （CBCT） films were collected.The parameters including alveolar height， alveolar thickness and root movement range were measured on sagittal section of upper and lower canines.One-way ANOVA and LSD-t test were used to determine the differences among three different vertical skeletal types.

Results

At the upper and lower canines， short skeletal type patients presented a greater angle between the canine axis and the axis of the lingual cortex than the long and norm skeletal type patients.In short skeletal type subjects， the root apex of the upper canine was farther away from the lingual cortex than in the long skeletal type patients.The movement range of canine was greater in short skeletal type patients than that in the long skeletal type patients.

Conclusion

Different skeletal types had great influences on the height， thickness and rotation range of canine.

Key words: Vertical skeletal types, Canine, Cone beam computed tomography

Hui ZHOU, Yang WANG, Yang CAO. A cone beam computed tomography study of canine alveolar morphology in different vertical skeletal types[J]. Chinese Journal of Stomatological Research(Electronic Edition), 2011, 5(06): 621-627.

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Figures/Tables 3

References 16

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测量项目	低角	均角	高角	P
颊侧骨皮质夹角（°）	10.84±2.72	8.41±4.46	10.13±3.39	0.10
腭侧骨皮质夹角（°）	23.97±7.23^a	24.84±7.15	11.29±4.60^c	0.00
颊侧骨皮质距离（mm）	1.77±0.55	2.00±0.74	1.58±0.47	0.09
腭侧骨皮质距离（mm）	8.63±1.92^a	9.59±1.67	5.89±1.27^c	0.00
颊侧牙槽骨高度（mm）	13.58±0.77	14.06±1.45	14.96±2.04	0.11
腭侧牙槽骨高度（mm）	14.32±1.43	15.12±1.32	15.17±1.80	0.16
牙根长度（mm）	16.27±1.14	16.55±1.10	16.91±1.21	0.22
颊侧旋转角度（°）	16.46±6.24^a	11.07±2.86^b	10.90±3.07^c	0.00
腭侧旋转角度（°）	55.87±6.50^a	46.36±6.63^b	37.56±7.26^c	0.00
总旋转角度（°）	72.32±10.40^a	56.93±7.03^b	48.46±8.51^c	0.00
颊侧旋转距离（mm）	2.38±1.18^a	1.61±0.62^b	1.31±0.24^c	0.00
腭侧旋转距离（mm）	10.01±1.82^a	8.47±2.00^b	5.07±0.65^c	0.00
最大移动距离（mm）	12.45±2.44^a	10.38±2.00^b	6.37±0.76^c	0.00

测量项目	低角	均角	高角	P
颊侧骨皮质夹角（°）	10.84±2.72	8.41±4.46	10.13±3.39	0.10
腭侧骨皮质夹角（°）	23.97±7.23^a	24.84±7.15	11.29±4.60^c	0.00
颊侧骨皮质距离（mm）	1.77±0.55	2.00±0.74	1.58±0.47	0.09
腭侧骨皮质距离（mm）	8.63±1.92^a	9.59±1.67	5.89±1.27^c	0.00
颊侧牙槽骨高度（mm）	13.58±0.77	14.06±1.45	14.96±2.04	0.11
腭侧牙槽骨高度（mm）	14.32±1.43	15.12±1.32	15.17±1.80	0.16
牙根长度（mm）	16.27±1.14	16.55±1.10	16.91±1.21	0.22
颊侧旋转角度（°）	16.46±6.24^a	11.07±2.86^b	10.90±3.07^c	0.00
腭侧旋转角度（°）	55.87±6.50^a	46.36±6.63^b	37.56±7.26^c	0.00
总旋转角度（°）	72.32±10.40^a	56.93±7.03^b	48.46±8.51^c	0.00
颊侧旋转距离（mm）	2.38±1.18^a	1.61±0.62^b	1.31±0.24^c	0.00
腭侧旋转距离（mm）	10.01±1.82^a	8.47±2.00^b	5.07±0.65^c	0.00
最大移动距离（mm）	12.45±2.44^a	10.38±2.00^b	6.37±0.76^c	0.00

测量项目	低角	均角	高角	P
颊侧骨皮质夹角（°）	6.26±2.14	7.28±2.40	7.52±1.88	0.15
腭侧骨皮质夹角（°）	8.08±1.74^a	5.51±1.50^b	5.62±1.40	0.00
颊侧骨皮质距离（mm）	3.81±1.22^a	2.76±0.79^b	2.74±0.75	0.00
腭侧骨皮质距离（mm）	5.19±0.94^a	3.66±0.89^b	2.50±0.63^c	0.00
颊侧牙槽骨高度（mm）	12.89±1.00^a	13.09±0.66	10.10±0.92^c	0.00
腭侧牙槽骨高度（mm）	13.39±1.16^a	13.56±0.77	10.84±0.90^c	0.00
牙根长度（mm）	14.48±1.19	14.12±0.77	13.71±0.25	0.08
颊侧旋转角度（°）	17.52±4.81	18.34±4.17	20.68±4.10	0.07
腭侧旋转角度（°）	29.60±4.00^a	20.55±4.54^b	20.52±4.20	0.00
总旋转角度（°）	47.12±6.78^a	38.94±7.65^b	41.20±6.50	0.00
颊侧旋转距离（mm）	3.24±0.53^a	3.01±0.49^b	2.73±0.43^c	0.01
腭侧旋转距离（mm）	4.58±0.72^a	3.54±0.61^b	2.54±0.50^c	0.00
最大移动距离（mm）	7.81±1.14^a	6.54±0.97^b	5.26±0.64^c	0.00

测量项目	低角	均角	高角	P
颊侧骨皮质夹角（°）	6.26±2.14	7.28±2.40	7.52±1.88	0.15
腭侧骨皮质夹角（°）	8.08±1.74^a	5.51±1.50^b	5.62±1.40	0.00
颊侧骨皮质距离（mm）	3.81±1.22^a	2.76±0.79^b	2.74±0.75	0.00
腭侧骨皮质距离（mm）	5.19±0.94^a	3.66±0.89^b	2.50±0.63^c	0.00
颊侧牙槽骨高度（mm）	12.89±1.00^a	13.09±0.66	10.10±0.92^c	0.00
腭侧牙槽骨高度（mm）	13.39±1.16^a	13.56±0.77	10.84±0.90^c	0.00
牙根长度（mm）	14.48±1.19	14.12±0.77	13.71±0.25	0.08
颊侧旋转角度（°）	17.52±4.81	18.34±4.17	20.68±4.10	0.07
腭侧旋转角度（°）	29.60±4.00^a	20.55±4.54^b	20.52±4.20	0.00
总旋转角度（°）	47.12±6.78^a	38.94±7.65^b	41.20±6.50	0.00
颊侧旋转距离（mm）	3.24±0.53^a	3.01±0.49^b	2.73±0.43^c	0.01
腭侧旋转距离（mm）	4.58±0.72^a	3.54±0.61^b	2.54±0.50^c	0.00
最大移动距离（mm）	7.81±1.14^a	6.54±0.97^b	5.26±0.64^c	0.00

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