儿童含牙囊肿的手术治疗

含牙囊肿又称滤泡囊肿 ,发生于牙冠或牙根形成之后 ,在缩余釉上皮与牙冠面之间出现液体渗出面而形成含牙囊肿 ,可来自一个牙胚 (含一个牙 ) ,也有来自多个牙胚 (含多个牙 )者。儿童含牙囊肿是颌骨牙源性囊肿的一种 ,多发生于恒牙萌出之前。但是 ,此时恒牙的牙胚已完全形成 ,在缩余釉上皮与牙齿之间有液体渗出而形成囊肿 ,含牙囊肿的发生可能与牙体异常有关。囊腔内充满淡黄色浆样液体。发病初期无自觉症状 ,有时可反复牙龈红肿 ,在口腔 X线检查时或当囊肿逐渐长大 ,局部颌骨膨隆 ,面部发生不对称时才发现 ,乳牙的含牙囊肿很少见。1　临床资…     

上颌窦后壁含牙囊肿1例报告

含牙囊肿发生于牙冠或牙根形成之后,在缩余釉上皮与牙冠面之间出现液体渗出而形成含牙囊肿。其发生部位多见于下颌第三磨牙区及上颌尖牙区。1993年10月,作者诊治一例上颌窦含牙囊肿患者,其含牙牢固地嵌在上颌窦后壁,实属少见,现报告如下: 患者:王××,男,13岁。诉左面部肿胀并上后牙龈反复流脓7个月。     

移位牙致上颌窦含牙囊肿1例

<正> 移位牙系指牙齿的形成与萌出过程中,受到全身或局部因素的干扰而不能萌出到正常位置的牙齿。由上颌第三磨牙移位于上颌窦与后组筛窦交界处致上颌窦含牙囊肿,临床上较罕见,现报告如下。 患者,男,20岁,因左侧颌面部膨隆10个月余入院。既     

11颗多生牙1例报道

<正>多生牙也称额外牙(supernumerary teeth),是正常牙数之外发生的牙齿。其发生可能来自牙胚发育时形成的过多牙蕾,也可能由牙胚分裂而成。可发生于牙弓的任何部位,最常见的是正中牙,位于上颌两中切牙之间,可单个也可成对。多生牙中上颌     

上颌窦含牙囊肿并发感染(附一例报告)

国内外对含牙囊肿的发生率、病因、症状等已有报道。上颌窦含牙囊肿较少见,我们在临床上遇到一例上颌窦含牙囊肿并发感染,并造成误诊误治,特介绍引以为戒。 病例摘要 患者赵××,男,20岁,待业青年。 门诊诊疗;1983年6月11日初诊,主诉:右后上牙     

实验性牙源性囊肿和釉质发育不全:对解释人含牙囊肿的发病机制可能有重要意义

人的含牙囊肿比较常见,但对其发病机制了解甚少。Main(1970),Browne(1975)认为含牙囊肿是在牙冠形成完成后由于缩余釉上皮内或上皮和牙釉质表面之间有液体积聚而成。Gillette及Weinmann (1958)则认为起源于牙囊以外的囊肿被正在萌出的牙齿穿入而成。Bloch—Jorgensen(1928)则相信一些乳牙根尖囊肿为恒牙长入从而形成含牙囊肿。作者用出生后两天和五天的仑鼠上颌第二磨牙胚移植到5至7周同种鼠的左侧颊袋内。接受生后五日鼠单个牙胚种植的动物总     

移位牙致上颌窦含牙囊肿1例

移位牙指牙齿的形成与萌出过程中 ,受到全身或局部因素的干扰而不能萌出到正常位置的牙齿。而由上颌第三磨牙移位于上颌窦与后组筛窦交界处致上颌窦含牙囊肿临床上较罕见 ,现报告如下。患者 ,男 ,2 0岁 ,因左侧颌面部膨隆 10个月而入院。既往面部无外伤异物史。查体 :左侧颌面部肿胀明显。左眼球未见突出、活动自如、无复视。双眼视力 1.0。左鼻腔狭窄、外侧壁内移、无异常分泌物。口内见 |8未萌 ,|5 6 7龈颊沟隆起 ,扪之有“乒乓球样”感 ,穿刺获棕褐色半透明状液。左上颌牙无松动 ,咬合关系正常。全口牙位曲面体层摄影及上颌华氏位X线片…     

双侧上颌窦含牙囊肿1例

上颌骨或上颌窦囊肿在临床上并不少见,诊断也不难,但发生在双侧上颌窦的含牙囊肿则比较少见,现将我科收治的1例报告如下: 患者,女,23岁。6年来自觉颌面部逐渐向外膨隆,无任何不适。一年前无明显诱因右侧颌面部肿     

上颌窦前壁含牙囊肿-例

上颌窦前壁含牙囊肿－例广东省四会市人民医院（５２６２００）屈新军含牙囊肿发生于牙冠或牙根形成之后，在缩余釉上皮与牙冠面之间出现渗出形成囊肿，且发生于未萌出牙，其发生部位多见于下颌第三磨牙区及上颌尖牙区、双尖牙区。我科于１９９５年１月，遇到一例因上颌双...     

移位牙致上颌窦含牙囊肿1例

病人女,21岁。2010-12-31来我院口腔科就诊。病人半月前无明显诱因出现口腔内不明液体流出,且有鼻塞症状,于外院CT检查显示右侧上颌窦内囊性病变,并于病灶内可见牙齿型,上颌窦后外壁受压变薄,不连续,肿物突出囊腔,诊断为右侧上颌窦含牙囊肿,建议入院手术治疗,病人未行处理,遂来我院。来就诊时症状同前。数字化曲     

柠檬精油对牙周致病菌抑制作用及其安全性初步研究

目的:探讨柠檬精油对牙周致病菌的体外抗菌活性及对细胞增殖的影响。方法:采用微量液体稀释法测定柠檬精油对Pg、Fn、Aa、Pi的最小抑菌浓度(minimal inhibitory concentration,MIC)及最小杀菌浓度(minimum bactericidal concentration,MBC);以较低浓度的MIC为标准稀释LEO作为实验组,采用MTT法测定柠檬精油对HUVECs的毒性作用,明确抑菌浓度下LEO的安全性。结果:柠檬精油对牙周主要致病菌均有抑菌作用,Pg、Fn、Aa、Pi的MIC分别是9.0 g/L、4.5 g/L、4.5 g/L、9.0 g/L,Aa、Fn的 MBC是9.0 g/L,Pg、Pi的MBC未测得。1/2MIC、1/20MIC浓度的LEO能够抑制人脐静脉内皮细胞的生长,而低于1/200MIC浓度的LEO则对人脐静脉内皮细胞的生长没有影响,其中1/200MIC浓度的LEO作用明显优于0.02%的CHX。结论:体外环境中,柠檬精油对牙周致病菌Pg、Fn、Aa、Pi具有抗菌活性,低浓度应用对机体相对安全。     

Oral cancer: molecular technologies for risk assessment and diagnosis

Purpose: The effective biomarkers related to diagnosis, metastasis, drug resistance and irradiation sensitivity of oral cancers will help the pathologist and oncologist to determine the molecular taxonomy diagnosis and design the individualization treatment for the patients with oral cancers.     

Computer-assisted planning for maxillofacial prosthodontic rehabilitation

Computerized tomography (CT) planning and the use of CT derived surgical templates for implant placement have shown promise for restoring function within months after surgical reconstruction of acquired post-oncologic defects.     

Stimulated whole saliva components in children with Down syndrome

The authors report on the components of stimulated whole saliva from children with Down syndrome—including pH, flow rate, sialic acid and protein concentrations, and amylase and peroxidase activity. Saliva samples were collected from 35 children aged 6–10 years. Of the participants, 17 had Down syndrome and 18 did not. To stimulate saliva production, the children chewed a piece of parafilm for 10 minutes before the sample was collected. Soon after collecting the saliva sample, the authors measured pH using a portable pH-meter. Sialic acid levels were determined with a thiobarbituric acid assay. Protein content was determined with Folin's phenol reagent. Amylase was assayed and the authors measured the maltose produced by the breakdown of starch and peroxidase using ortho-dianisidine.
No statistically significant difference was observed in levels of sialic acid (free and total) between the two groups. Protein concentration was about 36% higher in the group with Down syndrome. However, the salivary flow rate, pH, and amylase and peroxidase activities were lower among the children with Down syndrome.     

Effect of Pingyangmycin on human venous malformation endothelial cells

Purpose: Venous malformations are common vascular anomalies with a propensity of the head and neck. Intralesional injection of Pingyangmycin (PYM, bleomycin A5 hydrochloride) is a widely used sclerotherapy method for the treatment of venous malformation.     

牙髓再生的研究现状

目前,根管治疗术在临床上已得到了广泛的应用并成功的保存了患牙,但其仍有许多术后并发症。随着组织工程技术在口腔领域的应用,构建一种组织工程化牙髓进行牙髓-牙本质复合体的再生治疗成为可能。近年来国内外已有很多关于牙髓再生的研究,并且已经取得了一定成果。本文将对目前国内外牙髓再生的研究进展现状作一综述。     

替牙期骨性Ⅲ类错牙合患者颞下颌关节特征的锥形束CT研究

目的:采用锥形束CT(CBCT)研究替牙期骨性Ⅲ类错牙合患者颞下颌关节的影像学特征,探讨Ⅲ类功能状态下,颞下颌关节的生长、改建机制。方法:从就诊于昆明医科大学附属口腔医院正畸科的患者中选取符合纳入标准的替牙期骨性Ⅲ类错牙合患者及骨性Ⅰ类错牙合患者各20名,使用NNT viewer 5.3图像处理软件进行三维重建及线距和角度的测量,并进行统计学分析。结果:替牙期骨性Ⅲ类错牙合患者组和替牙期骨性Ⅰ类错牙合患者组对比结果为:矢状面双侧关节前间隙偏小、双侧关节上间隙偏小、双侧关节结节斜度偏小;冠状面双侧关节内间隙偏小,双侧关节上间隙偏小,双侧关节外间隙偏小,右侧髁状突角度偏小;横截面右侧髁状突前后径偏小。结论:替牙期骨性Ⅲ类错牙合患者颞下颌关节发育不充分,呈现髁状突,关节窝深度,关节结节斜度;冠状面关节内、外间隙均较小的特征。骨性Ⅲ类错牙合患者髁状突在关节窝中处于前置近关节窝顶位置。骨性Ⅲ类错牙合患者颞下颌关节影像学特征与其功能状态相适应。     

Ghlorhexidine as a root canal medicament for treating inflammatory lesions in the periodontal space

Abstract— The purpose of the present study was to investigate the therapeutic effect of intra-canal application of chlorhexidine on inflammatory root resorption. Dental pulps from monkey incisors were infected and resealed prior to extraction of the teeth. Root dentin was mechanically exposed and the teeth were replanted under aseptic conditions. After 4 weeks, the experimental teeth were dressed with chlorhexidine gel and resealed. Animals were sacrificed 4 weeks later, and their jaws prepared for histologic examination. Results showed that both marginal and apical periodontal inflammation and resorption were reduced in the chlorhexidine-treated teeth. It was concluded that the use of intra-canal chlorhexidine may be a useful adjunct in the treatment of inflammatory root resorption, but further human trials need to be undertaken before its clinical use can be recommended.     

小鼠牙髓干细胞同种异体移植后体内免疫反应初探

目的:初步探究小鼠牙髓干细胞同种异体移植后的全身免疫反应。方法:牙髓干细胞分离获得自C57BL/6 小鼠牙髓组织,培养至第3 代,与纳米羟基磷灰石(n-HA)复合培养形成复合物,扫描电镜观察其生长黏附情况。40只4周龄的C57BL/6 小鼠随机分成两组。实验组将复合物移植入上背部皮下,对照组将纳米羟基磷灰石植入上背部皮下,术后均使用外科方法严密缝合创口。两组动物术后均观察4周、6周处死,分离脾脏,制成脾淋巴细胞悬液,流式细胞仪测定CD4⁺、CD8⁺的值。结果:牙髓干细胞在体外与纳米羟基磷灰石结合良好;免疫组化染色实验组4周、6周均可见牙本质涎蛋白(dentin sialoprotein,DSP)阳性表达;实验组与对照组相比,术后4周、6周CD4⁺/CD8⁺值均无明显差异。结论:牙髓干细胞同种异体移植后,尚不能够引起机体的免疫排斥反应,其在体内仍具有低免疫原性,有望成为组织工程同种异体种子细胞来源。