基于CBCT观察上颌阻生尖牙患者蝶鞍形态变异情况

doi:10.13591/j.cnki.kqyx.2024.02.005

摘要/Abstract

摘要：

目的利用锥形束CT(cone-beam computed tomography,CBCT)探讨上颌尖牙阻生与蝶鞍形态变异的相关性,从三维方向上评价蝶鞍变异对上颌尖牙阻生的临床预判。方法收集125例上颌阻生尖牙患者(研究组)和125例与之相匹配的尖牙正常萌出者(对照组)。将所有样本CBCT数据导入Dolphin软件,进行重建头颅侧位片和三维图像,记录观察各组蝶鞍桥接(Ⅰ、Ⅱ、Ⅲ型)的类型分布和发生情况。使用SPSS 25.0软件对各组结果进行统计学分析。结果研究组蝶鞍桥接的发生率显著高于对照组(P=0.004),PIC(腭侧尖牙阻生)组蝶鞍桥接的发生率显著高于对照组(P=0.007),Ⅱ型和Ⅲ型蝶鞍桥接分布和对照组存在统计学差异(P=0.012)。而BIC(唇侧尖牙阻生)组和对照组蝶鞍桥接的发生情况无统计学差异。三维重建图像上各组间蝶鞍桥接发生率无统计学差异(P>0.05)。结论上颌尖牙阻生与蝶鞍桥接的发生情况有相关性,但仅上颌尖牙腭侧阻生患者更易发生蝶鞍桥接,而上颌尖牙唇侧阻生患者蝶鞍桥接的发生情况无变化。

关键词: 锥形束CT, 上颌阻生尖牙, 蝶鞍桥接

Abstract:

Objective To investigate the correlations between morphological variations of sella turcica and the buccally and palatally impacted maxillary canines(BIC/PIC)using the cone-beam computed tomography(CBCT)to assist prediction and prompt clinical intervention. Methods One hundred and twenty-five patients with impacted maxillary canines(experimental group) and 125 gender, age and Angle’s classification matching subjects with normally erupted canines(control group) were included into this study. The experimental group were later divided into the buccally-impacted canine(BIC) and palatally-impacted canine(PIC) sub-groups. CBCT data of all samples were imported into Dolphin software for reconstruction of lateral cephalograms and 3D images. The incidence along with the distribution type(type Ⅰ, Ⅱ, Ⅲ) of sella turcica bridging in each group were observed and recorded. SPSS 25.0 software was employed for statistical analysis of the results. Results The incidence of sella turcica bridging in the experimental group was significantly higher than that of the control group(P=0.004). In PIC subgroup also, the incidence was significantly higher than that of control group(P=0.007). Significant statistical differences were found in type Ⅱ and Ⅲ sella turcica bridging distribution type between PIC subgroup and control group(P=0.012). However, regarding BIC sub-group, no significant difference was noticed concerning the sella turcica bridging occurrence compared to control group. There was also no significant difference in the incidence of sella turcica bridging in 3D reconstructed images among all groups(P>0.05). Conclusion There is a correlation between the impacted maxillary canines and the incidence of sella turcica bridging. However, the sella turcica bridging is more likely to occur only in PIC patients, while no recognizable morphological variation is detected in BIC patients regarding sella turcica.

Key words: cone-beam computed tomography (CBCT), maxillary impacted canines, sella turcica bridging

中图分类号:

R783.5

缪世维, 严沁月, 胡丹艳, 曹丹, Izadikhah Iman, 严斌. 基于CBCT观察上颌阻生尖牙患者蝶鞍形态变异情况[J]. 口腔医学, 2024, 44(2): 105-109.

MIAO Shiwei, YAN Qinyue, HU Danyan, CAO Dan, Izadikhah Iman, YAN Bin. Morphological anomalies of sella turcica patients with maxillary impacted canines: A cone-beam computed tomography study[J]. Stomatology, 2024, 44(2): 105-109.

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特征	研究组		对照组 (n=125)	P
特征	BIC组 (n=64)	PIC组 (n=61)	对照组 (n=125)	P
性别				0.955^a
女,n(%)	35(54.7)	35(57.4)	70(56.0)
男,n(%)	29(45.3)	26(42.6)	55(44.0)
年龄/岁	20.81±5.59	20.39±5.04	20.61±5.32	0.908^b
安氏分类				0.680^a
安氏Ⅰ类,n(%)	25(39.1)	30(49.1)	55(44.0)
安氏Ⅱ类,n(%)	26(40.6)	17(27.9)	43(34.4)
安氏Ⅲ类,n(%)	13(20.3)	14(23.0)	27(21.6)

分组	Ⅰ型	Ⅱ型	Ⅲ型	P
研究组	38(30.4)	79(63.2)	8(6.4)	0.009^*
对照组	60(48.0)	62(49.6)	3(2.4)	0.009^*

分组	Ⅰ型	Ⅱ型	Ⅲ型	P
研究组	64(51.2)	53(42.4)	8(6.4)	0.071
对照组	77(61.6)	46(36.8)	2(1.6)	0.071

分组	Ⅰ型	Ⅱ型	Ⅲ型	P
阻生侧	70(65.4)	31(29.0)	6(5.6)		0.972
对照侧	68(63.6)	33(30.8)	6(5.6)		0.972

分组	Ⅰ型	Ⅱ型	Ⅲ型	P
BIC组	22(34.4)	38(59.4)	4(6.2)	0.036^*
PIC组	16(26.2)	41(67.2)	4(6.6)
对照组	60(48.0)	62(49.6)	3(2.4)