摘要
目的 :测量切牙管及邻近骨性结构 ,为切牙区种植体植入提供参考依据。方法 :以游标卡尺等测量工具对 73例上颌骨标本的切牙管进行实体定量测量。结果 :(1)切牙管前壁与鼻底平面交角 :114 .80°±11.0 0° ;(2 )上前牙槽骨前壁与鼻底平面交角 :10 7.2 8°± 10 .75° ;(3 )切牙管长度 :男性为 (15 .63± 2 .18)mm ,女性为 (14 .5 9± 1.96)mm ;(4 )切牙管鼻腔开口宽径 :男性为 (4 .92± 1.46)mm ,女性为 (5 .73± 1.5 0 )mm ;切牙管口腔开口宽径 :男性为 (3 .2 3± 0 .60 )mm ,女性为 (3 .83± 0 .92 )mm。 (5 )在鼻底平面 ,切牙管前壁与上前牙槽骨前壁距离 :(6.15± 1.90 )mm。结论 :切牙管区种植体植入方向应与切牙管平行 ,与鼻底平面成约 115°角 ;切牙管前部牙槽骨较薄 ,宜植入直径为 4mm以下的种植体。
Objective: To study the anatomic structure of the nasopalatine duct and the neighboring bone,provide reference for implant surgery in the incisor region. Methods: Manual quantitative measurement of the nasopalatine duct were performed in 73 maxilla specimens (38 from male and 35 from female). Results: The angle between the anterior wall of nasopalatine duct and the nasal floor was 114.80°±11.00°, the angle between the cortical plate of anterior maxilla and the nasal floor 107.28°±10.75°, the length of the nasopalatine duct was (15.63±2.18) mm in male, and ( 14.59 ±1.96) mm in female, the width of nasal opening of the duct was ( 4.92 ±1.46) mm in male, and (5.73±1.50) mm in female, the width of oral opening of the duct was (3.23±0.60) mm in male and (3.83±0.92) mm in female, at the level of nasal floor, the distance between the anterior wall of the duct and cortical plate of anterior maxilla was (6.15±1.90) mm. Conclusion: In front of nasopalatine duct, implants should be implanted parallel to nasopalatine duct,with an angle about 115° between the implant direction and nasal floor. The bone in front of nasopalatine duct was thin,the diameter of implants applied here should be less than 4 mm.
出处
《实用口腔医学杂志》
CAS
CSCD
北大核心
2002年第3期250-252,共3页
Journal of Practical Stomatology
