BACKGROUND Pulp revascularization has become a new method for the treatment of periapical diseases in young permanent teeth in recent years.Through root canal flushing and disinfection,avoiding mechanical preparation,...BACKGROUND Pulp revascularization has become a new method for the treatment of periapical diseases in young permanent teeth in recent years.Through root canal flushing and disinfection,avoiding mechanical preparation,guiding apical stem cells into the root canal and promoting the continuous development of tooth roots,it has achieved good clinical curative effects.But in adult patients with chronic periapical periodontitis with immature roots and open apices,apical barrier technology is often used to treat these teeth.CASE SUMMARY Pulp revascularization of a 26-year-old patient's tooth was performed using cefaclor instead of minocycline and iRoot BP instead of mineral trioxide aggregate as intracanal medication.The case was followed up for 36 mo.Observations showed evidence of regression of clinical signs and symptoms,resolution of apical periodontitis and no discolouration of affected teeth.CONCLUSION For adult patients with chronic periapical periodontitis with immature roots and open apices,pulp revascularisation showed favourable results in treating these teeth.展开更多
背景:粪肠球菌作为优势菌的难治性根尖周炎是一种经过反复多次的根管治疗之后仍然伴随着持续性炎症和骨吸收的疾病。多种实验表明,叉头样转录因子3(forkhead box protein 3,Foxp3)通过影响机体自身免疫反应参与各种炎症疾病。目的:观察F...背景:粪肠球菌作为优势菌的难治性根尖周炎是一种经过反复多次的根管治疗之后仍然伴随着持续性炎症和骨吸收的疾病。多种实验表明,叉头样转录因子3(forkhead box protein 3,Foxp3)通过影响机体自身免疫反应参与各种炎症疾病。目的:观察Foxp3在粪肠球菌感染的大鼠难治性根尖周炎病变中的表达情况。方法:6周龄SD大鼠32只,随机各挑选16只分成未封菌组和封菌组。将32只大鼠在无痛条件下行双侧下颌第1磨牙中央窝开髓,未封菌组放入PBS小棉球,封菌组放入粪肠球菌混悬液小棉球,随后在双侧内髓腔放置流动树脂后光固化。常规水食室温饲养,于1,2,3,4周两组各随机选取4只大鼠取下颌骨组织;并以0周大鼠未做开髓处理为空白对照组。用苏木精-伊红染色观察大鼠根尖周部位的炎症组织病理变化;RT-PCR和免疫组织化学检测根尖周组织Foxp3的表达变化。结果与结论:①苏木精-伊红染色显示:未封菌组、封菌组大鼠根尖周炎的动物模型均建立成功,根尖周围组织区域均可见到明显的炎性细胞的浸润;②RT-PCR结果显示:Foxp3在未封菌组根尖周组织区域的mRNA表达水平呈现1-4周逐步递增;封菌组根尖区组织Foxp3的mRNA表达水平在3周达到高峰后下降,在2,4周与未封菌组比较,差异有显著性意义(P<0.05);③免疫组织化学结果显示:未封菌组中Foxp3的阳性细胞表达量随着时间递增,封菌组在第3周表达高峰后第4周下降,与RT-PCR的结果一致(P<0.05);④结论:Foxp3参与慢性根尖周炎和难治性根尖周炎的进展过程;在炎症慢性期,Foxp3在难治性根尖周炎中表达明显降低,提示其可能与粪肠球菌有一定的关系。展开更多
基金Supported by General Program of National Natural Scientific Foundation of China,No.81870755Medical Scientific Research Foundation of Guangdong Province of China,No.A2022199Science Research Cultivation Program of Stomatological Hospital,Southern Medical University,No.PY2020018 and No.PY2021021.
文摘BACKGROUND Pulp revascularization has become a new method for the treatment of periapical diseases in young permanent teeth in recent years.Through root canal flushing and disinfection,avoiding mechanical preparation,guiding apical stem cells into the root canal and promoting the continuous development of tooth roots,it has achieved good clinical curative effects.But in adult patients with chronic periapical periodontitis with immature roots and open apices,apical barrier technology is often used to treat these teeth.CASE SUMMARY Pulp revascularization of a 26-year-old patient's tooth was performed using cefaclor instead of minocycline and iRoot BP instead of mineral trioxide aggregate as intracanal medication.The case was followed up for 36 mo.Observations showed evidence of regression of clinical signs and symptoms,resolution of apical periodontitis and no discolouration of affected teeth.CONCLUSION For adult patients with chronic periapical periodontitis with immature roots and open apices,pulp revascularisation showed favourable results in treating these teeth.
文摘背景:粪肠球菌作为优势菌的难治性根尖周炎是一种经过反复多次的根管治疗之后仍然伴随着持续性炎症和骨吸收的疾病。多种实验表明,叉头样转录因子3(forkhead box protein 3,Foxp3)通过影响机体自身免疫反应参与各种炎症疾病。目的:观察Foxp3在粪肠球菌感染的大鼠难治性根尖周炎病变中的表达情况。方法:6周龄SD大鼠32只,随机各挑选16只分成未封菌组和封菌组。将32只大鼠在无痛条件下行双侧下颌第1磨牙中央窝开髓,未封菌组放入PBS小棉球,封菌组放入粪肠球菌混悬液小棉球,随后在双侧内髓腔放置流动树脂后光固化。常规水食室温饲养,于1,2,3,4周两组各随机选取4只大鼠取下颌骨组织;并以0周大鼠未做开髓处理为空白对照组。用苏木精-伊红染色观察大鼠根尖周部位的炎症组织病理变化;RT-PCR和免疫组织化学检测根尖周组织Foxp3的表达变化。结果与结论:①苏木精-伊红染色显示:未封菌组、封菌组大鼠根尖周炎的动物模型均建立成功,根尖周围组织区域均可见到明显的炎性细胞的浸润;②RT-PCR结果显示:Foxp3在未封菌组根尖周组织区域的mRNA表达水平呈现1-4周逐步递增;封菌组根尖区组织Foxp3的mRNA表达水平在3周达到高峰后下降,在2,4周与未封菌组比较,差异有显著性意义(P<0.05);③免疫组织化学结果显示:未封菌组中Foxp3的阳性细胞表达量随着时间递增,封菌组在第3周表达高峰后第4周下降,与RT-PCR的结果一致(P<0.05);④结论:Foxp3参与慢性根尖周炎和难治性根尖周炎的进展过程;在炎症慢性期,Foxp3在难治性根尖周炎中表达明显降低,提示其可能与粪肠球菌有一定的关系。
