下颌切牙区种植相关影像学测量及分析研究

doi:10.13591/j.cnki.kqyx.2024.04.003

摘要/Abstract

摘要：

目的应用锥形束CT影像数据研究连续多颗下颌切牙之间的近远中空间,为临床下颌切牙缺失修复及种植手术方案设计提供理论依据。方法选取500例患者的CBCT影像资料,对连续多颗下颌切牙间的近远中空间进行测量和统计学分析,并评估不同种植方案的可行性。结果测量2颗中切牙之间近远中空间为(10.72±1.10)mm,单颗中切牙和同侧侧切牙之间近远中空间在左右侧分别为(11.33±1.00)、(11.45±0.98)mm;连续3颗下切牙近远中空间在左右侧分别为(15.69±1.25)、(15.79±1.26)mm;连续4颗下切牙近远中空间为(20.76±1.48)mm。下颌切牙区各牙位区段的近远中空间有性别差异,男性均略大于女性。结论下颌切牙区近远中空间窄小,连续2颗切牙缺失时仅部分患者可植入2枚窄径种植体,其余只能选择种植悬臂修复,当2颗以上下颌切牙缺失时可植入2枚植体,实现种植固定桥修复。

关键词: 下颌切牙, 近远中空间, 种植牙, CBCT

Abstract:

Objective To investigate the mesiodistal space in the area of multi-consecutive mandibular incisors,using CBCT image data, in order to provide a theoretical basis for the restoration of missing mandibular incisors and dental implant surgery. Methods CBCT imaging data of 500 patients were selected. The mesiodistal space in the area of multi-consecutive mandibular incisors were measured and statistically analyzed, and the feasibility of different implant placement strategies was evaluated. Results The mesiodistal space between two mandibular central incisors was (10.72±1.10)mm, and the mesiodistal space between mandibular central and lateral incisors were (11.33±1.00)mm and (11.45±0.98)mm on the left and right sides, respectively. The mesiodistal space between three consecutive mandibular incisors were (15.69±1.25)mm and (15.79±1.26)mm on the left and right sides, respectively. The mesiodistal space between four consecutive mandibular incisors was (20.76±1.48)mm. There was a gender difference in the mesiodistal space between mandibular incisor positions, with males having slightly larger space than females. Conclusion The mesiodistal space between mandibular incisors is narrow. When two consecutive incisors are missing, only a few patients are available for two narrow diameter implants, while others have to choose cantilever restoration. When more than two mandibular incisors are missing, most patients are available for two narrow diameter implants, restoring with implant-supported fix partial bridges.

Key words: mandibular incisor, mesiodistal space, dental implant, CBCT

中图分类号:

R783.4

翟家彬, 吴雯丽, 沈铭, 陈盈盈. 下颌切牙区种植相关影像学测量及分析研究[J]. 口腔医学, 2024, 44(4): 250-254.

ZHAI Jiabin, WU Wenli, SHEN Ming, CHEN Yingying. Radiological measurement and analysis of mesiodistal space at mandibular incisor positions[J]. Stomatology, 2024, 44(4): 250-254.

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牙位区间	总体/mm (n=500)	性别差异
牙位区间	总体/mm (n=500)	男性/mm(n=244)	女性/mm(n=256)	t	P
31—41	10.72±1.10	10.88±1.23	10.57±0.93	3.189	0.002^*
31—32	11.33±1.00	11.43±1.09	11.24±0.90	2.189	0.029^*
41—42	11.45±0.98	11.56±1.07	11.34±0.88	2.591	0.010^*
32—41	15.69±1.25	15.89±1.37	15.51±1.09	3.429	<0.001^*
31—42	15.79±1.26	15.97±1.38	15.61±1.10	3.145	0.002^*
32—42	20.76±1.48	20.98±1.61	20.56±1.33	3.186	0.002^*

牙齿缺失位置	性别	可放入2枚?3.3 mm植体	可放入2枚?2.8 mm植体
2颗下中切牙区段	男(n=244)	7.38%(n=18)	25.00%(n=61)
	女(n=256)	1.95 %(n=5)	13.28%(n=34)
	合计(n=500)	4.60%(n=23)	19.00%(n=95)
含侧切牙的2颗下切牙区段	男(n=488)	13.32%(n=65)	46.31%(n=226)
	女(n=512)	6.84%(n=35)	35.74%(n=183)
	合计(n=1 000)	10.00%(n=100)	40.90%(n=409)