Binderman I, Adut M, Zohar R, Bahar H, Faibish D, Yaffe A
Department of Oral Biology, Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Tel Aviv, Israel.
J Periodontol. 2001 Oct;72(10):1348-53. doi: 10.1902/jop.2001.72.10.1348.
In several publications, we have reported that a distinct resorptive phase of alveolar bone developed during 3 weeks following elevation of a mucoperiosteal flap in rats by a coronal surgical approach. In the present study, we compared the alveolar bone loss after mucoperiosteal flap surgery by a coronal approach (COR) to a surgical approach incising the mucosa close to the tooth apices and separating the mucoperiosteum toward the tooth crown (apical approach, AP).
Eighteen Wistar rats were divided into 2 experimental groups; each group consisted of 9 rats. In the first group, COR was performed on both buccal and lingual aspects on the right side of the rat mandible, while the left side served as a sham-operated control. In the second experimental group, AP was performed.
In the AP group, the outer aspect (buccal or lingual) of the alveolar bone was slightly resorbed usually at the level where the mucosa was incised. In many sections, extensive modeling of new trabecular bone was seen, coronal to the surgical incision. On the contrary, the coronal surgical approach revealed an extensive resorptive phase, mainly of the periodontal aspect of the alveolar bone.
The results of this study show that periodontal surgery by a coronal surgical approach stimulates a burst of remodeling of the alveolar bone in a very specific pattern.
在几篇出版物中，我们报道了通过冠状手术方法在大鼠中掀起粘骨膜瓣后的3周内，牙槽骨出现了一个明显的吸收期。在本研究中，我们比较了通过冠状手术方法（COR）进行粘骨膜瓣手术后的牙槽骨丧失情况与在靠近牙根尖处切开黏膜并向牙冠分离粘骨膜的手术方法（根尖手术方法，AP）。
18只Wistar大鼠被分为2个实验组；每组由9只大鼠组成。在第一组中，在大鼠下颌骨右侧的颊侧和舌侧均进行COR手术，而左侧作为假手术对照。在第二实验组中，进行AP手术。
在AP组中，牙槽骨的外侧（颊侧或舌侧）通常在黏膜切开的水平处略有吸收。在许多切片中，在手术切口的冠方可见新小梁骨的广泛塑形。相反，冠状手术方法显示出广泛的吸收期，主要是牙槽骨的牙周方面。
本研究结果表明，通过冠状手术方法进行牙周手术会以非常特定的模式刺激牙槽骨的一阵重塑。
