牙体牙髓牙周病学杂志
牙體牙髓牙週病學雜誌
아체아수아주병학잡지
CHINESE JOURNAL OF CONSERVATIVE DENTISTRY
2014年
5期
282-285
,共4页
颜承伟%安晶涛%李莹%张斌%金星爱%刘英群
顏承偉%安晶濤%李瑩%張斌%金星愛%劉英群
안승위%안정도%리형%장빈%금성애%류영군
卵巢切除术%牙槽骨丧失%实验性牙周炎%显微CT
卵巢切除術%牙槽骨喪失%實驗性牙週炎%顯微CT
란소절제술%아조골상실%실험성아주염%현미CT
ovariectomy%alveolar bone loss%experimental periodontitis%Micro-CT
目的:探讨切除卵巢后,大鼠牙槽骨骨质的变化情况及其对实验性牙周炎进展的影响。方法:取3月龄健康雌性Wistar大鼠20只,随机分为2组(n=10),分别进行卵巢切除(卵巢切除组,OVX)和卵巢周围脂肪组织切除(假手术组,SHAM);3个月后在所有大鼠下颌右侧第一磨牙(M1)牙颈部结扎丝线诱导牙周炎。于切除卵巢后第5个月处死各大鼠,显微CT测量骨形态学参数,并于三维重建模型上测量牙槽骨高度丧失程度。结果:术后5个月,OVX组大鼠牙槽骨的平均骨密度(BMD)、骨体积分数(BV/TV)、骨小梁厚度(Tb.Th)均明显低于SHAM组(P<0.05);骨表面积和体积比(BS/BV)、骨小梁分离度(Tb.Sp)均明显高于SHAM组(P<0.05);OVX组大鼠的牙槽骨高度丧失程度与SHAM组相比无明显差异(P>0.05)。结论:大鼠去除卵巢后牙槽骨发生骨质疏松,但并不加重实验性牙周炎所致的牙槽骨高度丧失。
目的:探討切除卵巢後,大鼠牙槽骨骨質的變化情況及其對實驗性牙週炎進展的影響。方法:取3月齡健康雌性Wistar大鼠20隻,隨機分為2組(n=10),分彆進行卵巢切除(卵巢切除組,OVX)和卵巢週圍脂肪組織切除(假手術組,SHAM);3箇月後在所有大鼠下頜右側第一磨牙(M1)牙頸部結扎絲線誘導牙週炎。于切除卵巢後第5箇月處死各大鼠,顯微CT測量骨形態學參數,併于三維重建模型上測量牙槽骨高度喪失程度。結果:術後5箇月,OVX組大鼠牙槽骨的平均骨密度(BMD)、骨體積分數(BV/TV)、骨小樑厚度(Tb.Th)均明顯低于SHAM組(P<0.05);骨錶麵積和體積比(BS/BV)、骨小樑分離度(Tb.Sp)均明顯高于SHAM組(P<0.05);OVX組大鼠的牙槽骨高度喪失程度與SHAM組相比無明顯差異(P>0.05)。結論:大鼠去除卵巢後牙槽骨髮生骨質疏鬆,但併不加重實驗性牙週炎所緻的牙槽骨高度喪失。
목적:탐토절제란소후,대서아조골골질적변화정황급기대실험성아주염진전적영향。방법:취3월령건강자성Wistar대서20지,수궤분위2조(n=10),분별진행란소절제(란소절제조,OVX)화란소주위지방조직절제(가수술조,SHAM);3개월후재소유대서하합우측제일마아(M1)아경부결찰사선유도아주염。우절제란소후제5개월처사각대서,현미CT측량골형태학삼수,병우삼유중건모형상측량아조골고도상실정도。결과:술후5개월,OVX조대서아조골적평균골밀도(BMD)、골체적분수(BV/TV)、골소량후도(Tb.Th)균명현저우SHAM조(P<0.05);골표면적화체적비(BS/BV)、골소량분리도(Tb.Sp)균명현고우SHAM조(P<0.05);OVX조대서적아조골고도상실정도여SHAM조상비무명현차이(P>0.05)。결론:대서거제란소후아조골발생골질소송,단병불가중실험성아주염소치적아조골고도상실。
AIM:To investigate the impact of ovariectomy on mandibular alveolar bone mineral density and periodontal disease.METHODS:Twenty 12-week-old female Wistar rats were randomly assigned into sham surgery (SHAM)group and ovariection(OVX)group (n=10).3 months after surgery,periodontal disease was induced by silk ligature around the neck of the mandibular right first molar for 2 months.Then the rats were sacrificed,Micro-CT scan was carried out to detect the bone mineral density (BMD),trabecular thickness (Tb.Th),bone volume fraction (BV/TV),trabecular separation (Tb.Sp.)and bone surface to bone volume (BS/BV)of mandibular alveolar bone. Alveolar bone height loss (ABHL)was measured on 3D models.RESULTS:5 months after ovariectomy,the values BMD,Tb.Th and BV/TV in OVX rats were lower than those in SHAMrats (P<0.05),whereas the values of Tb.Sp and BS/BV of the OVX rats increased compared with SHAM rats (P<0.05 ).However,no difference was found in ABHL between 2 groups.CONCLUSION:Ovariectomy induces osteoporosis in the mandibular alveolar bone of rats, but has no effect on the alveolar bone height loss of rats with experimental periodontitis.