牙骨质

AIM:To investigate the effects of estrogen on the expression and distribution of IL-1 in the remodeling of osteoporotic alveolar bone.

目的：探讨雌激素对骨质疏松牙槽骨改建中IL-1的表达与分布的影响及意义。

This experiment investigated the effects of estrogen on alveolar bone remodeling in osteoporotic animal.

本实验探讨了雌激素对骨质疏松患者牙槽骨改建的影响及作用。

Methods Animal models were established by ovariectomy and exodontia on left partial Maxillary.

方法通过去除SD大鼠双侧卵巢，拔除单侧上颌磨牙，建立骨质疏松的剩余牙槽骨动物模型，并在此基础上通过免疫组化方法观察、分析切除卵巢及单独和联合运用生长激素、雌激素对去势大鼠剩余牙槽骨内胰岛素样生长因子分布和表达的影响。

Methods Lesions of bone cortex and of teeth root tips and alveolar bone loss were shown with radiographs.

通过骨质疏松程度、牙槽骨硬骨板的存在或消失和骨小梁的受损情况来判断。

Its inner pulp contains the blood and nerve supply for the bonelike dentin, covered in the crown by enamel , the hardest tissue in the body.

牙髓内有血管和神经，为骨质的牙本质提供营养，由牙釉质包覆在牙冠中，牙釉质是身体内最坚硬的组织。

Methods Nineteen bone impacted and unerupted teeth in 18 cases selected by orthopantomograph were scanned by 3DX-CT with 1.0 mm slice thickness. Images obtained by 3DX-CT (horizontally, sagittally, coronally) were analyzed after multi-plane reconstruction and 3D reconstruction including the angle of the bone axis impacted and unerupted teeth; maximum radius of the coronal teeth; distances between the tooth and the cortical bone around; distances to the neighboring tooth roots and nerve forum canal; the thickness of the bone tissue, etc.

对经曲面断层片筛选出的18例19枚埋伏牙进行牙科三维CT检查，扫描层厚1.0mm，重建后进行图像三维断面显示（包括水平位，矢状位，冠状位），对牙位图像进行分析及测量（包括埋伏牙牙长轴的角度，牙根弯曲度，牙冠的最大径，与骨皮质的距离，与邻牙根、神经孔／管的距离；骨质的厚度、高度等）。

Results Dental CT software and three-dimensional reconstruction can display the overall view of jaw in implantation area; measure the height, width, bone density of the alveolar bone; demonstrate the relationship of alveolar bone and mandibular canal; and depict dentural spatial relation also.

结果 应用Dental软件及3D重建技术可以获得拟种植区颌骨的全景形态，局部牙槽骨的高度、宽度、骨质密度及牙槽骨与下颌管及上颌窦的关系，牙列的空间关系等。

Medicines for systemic osteoporosis are effective in ameliorating maxillomandibular bone structure, delaying alveolar bone resorption and promoting new bone formation.

针对全身骨质疏松治疗的药物能有效改善颌骨骨质结构，减缓牙槽骨吸收，促进新骨形成。

Within 30 months, small recognizable tooth crowns, containing complete bone-like dentin, a well-defined pulp chamber and even enamel, had formed

三十个月内就形成小小但已可辨识的齿冠，有完整的像骨头的齿骨质层，一个非常明显、确定的牙髓槽，甚至珐琅质。

Within30 months, small recognizable tooth crowns, containing complete bone-like dentin , a well-defined pulp chamber and even enamel, had formed.

三十个月内就形成小小但已可辨识的齿冠，有完整的像骨头的齿骨质层，一个非常明显、定的牙髓槽，甚至珐琅质。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失