Moxham B J, Shore R C, Berkovitz B K
Department of Anatomy (Oral Biology), Medical School, University of Bristol, England, U.K.
Arch Oral Biol. 1987;32(7):477-81. doi: 10.1016/s0003-9969(87)80008-0.
Quantitative ultrastructural studies were conducted on eight rats (four aged 21 days and four aged 8 weeks) using the periodontal tissues around the mesial root of the mandibular first molar. The periodontal ligament of the erupting tooth contained significantly more capillary fenestrations than the erupted tooth, both in terms of the number per unit area of endothelium (2.2/microns2) and in terms of total number per cubic millimetre of tissue (30.5 X 10(6)/mm3). Differences were also discerned with respect to the percentage of capillaries in the tissue. Thus, the periodontal vasculature demonstrates marked morphological changes which may be related to the eruptive phase of the tooth.
对八只大鼠（四只21天大，四只8周大）下颌第一磨牙近中牙根周围的牙周组织进行了定量超微结构研究。正在萌出牙齿的牙周膜，无论在内皮细胞每单位面积的数量（2.2/平方微米）还是在每立方毫米组织的总数（30.5×10⁶/立方毫米）方面，其毛细血管窗孔都明显多于已萌出的牙齿。在组织中毛细血管的百分比方面也发现了差异。因此，牙周血管系统表现出明显的形态学变化，这可能与牙齿的萌出阶段有关。
