义齿,局部,固定

摘要： Objective To compare the effect on the flow conditions of adhesives and the retention force of restorations among different cement?retained methods of implant?supported fixed prostheses. Methods Four common cement?retained methods were selected, including the occlusal hole for screw access (OH), the lingual hole for adhesives overflow (LH), the resin replica for titanium abutment (RR), and the traditional cement?retained method (the control group). The adhesive used in this study was resin?modified glass ionomer cement. The two?dimensional analysis models of computational fluid dynamics (CFD) were established. The flow conditions of adhesives in the adhesion process was analyzed by the CFD analysis. The internal filling ratio and the amount of neck overflow of adhesives below the edge of the prosthesis were calculated. Ten zirconia prostheses in each group were processed and cemented. The retention force was examined by mechanical tensile experiments in vitro . Results The CFD analysis showed the internal filling ratio of adhesives from high to low was the LH group, the OH group, the RR group and the control group. The amount of neck overflow of adhesives below the edge of the prosthesis from less to more was the RR group, the OH group, the LH group and the control group. The retention force was (240.7± 33.9) N in the control group, (278.2±59.1) N in the OH group, (292.9±47.9) N in the LH group, and (262.8± 59.4) N in the RR group. There was a statistically significant difference in the retention force between the LH group and the control group (P=0.029). There was no significant difference among the other groups (P> 0.05). Conclusions The modified cement?retained methods can effectively reduce the amount of neck overflow of adhesives, and improve the filling condition of adhesive in the adhesive clearance to ensure the retention force of the prostheses. Clinically, the appropriate modified cement?retained method should be selected according to the three?dimensional position of the implant and the position of prosthetic margin.%目的 研究种植固定修复中不同粘接固位形式对粘接剂流动状态及修复体固位力的影响.方法 选取4种常见的粘接固位形式,分为对照组(传统粘接固位)、开孔组(面开孔)、排溢孔组(舌面开孔)、代型组(使用粘接代型),选用树脂加强型玻璃离子粘接剂;建立计算流体力学二维分析模型,利用计算流体力学模拟粘接过程中粘接剂的流动状态,并计算粘接剂间隙内粘接剂的充盈比及修复体边缘下粘接剂的量.根据组别加工40个全瓷修复体(每组10个),完成相应粘接,进行拉伸实验,比较各组修复体固位力.结果 计算流体力学分析显示,粘接剂间隙内粘接剂的充盈比从大到小依次为排溢孔组、开孔组、代型组、对照组,修复体边缘下粘接剂的量从小到大依次为代型组、开孔组、排溢孔组、对照组.对照组、开孔组、排溢孔组、代型组修复体固位力分别为(240.7±33.9)、(278.2± 59.1)、(292.9±47.9)、(262.8±59.4)N,其中排溢孔组显著大于对照组(P=0.029),其余组间差异均无统计学意义(P>0.05).结论 3种改良的粘接固位形式均能有效减少种植固定修复粘接过程中粘接剂的龈下溢出,并改善粘接剂在粘接剂间隙内的充盈情况,保证修复体固位力.临床应根据种植体三维位置、修复体边缘位置等实际情况选择合适的粘接固位形式.

摘要： 目的 比较下颌中切牙种植单端固定桥桥体与邻牙接触面形状对种植体、骨组织应力分布及修复体位移的影响.方法 采用CT扫描获取健康成人下颌骨及牙列影像数据,建立下颌中切牙种植体单端固定桥修复的三维有限元模型,其中与桥体接触的邻近天然牙的接触面分别设计为椭圆形和梯形(唇侧底边略小而舌侧底边略大).在桥体41长轴中线切缘处加载120 N载荷,方向分别设定为平行于牙体长轴且向下的0°角,颊侧至舌侧并向下与牙体长轴分别呈30°、45°、60°角,垂直于牙体长轴且向舌侧的90°角.比较两种模型种植体、周围骨组织的应力分布情况以及修复体的位移变化.结果 在相同条件加载下,与椭圆形接触面模型相比,梯形接触面模型种植体及周围骨组织的最大等效应力和修复体的最大位移均较小,且应力分布更均匀,应力集中范围更小,随着加载角度的增加,此种趋势更明显,即当加载角度增大至90°时,椭圆形接触面模型种植体及周围骨组织的最大等效应力、修复体的最大位移分别为196和101 MPa、0.196 mm,而梯形接触面模型分别为157和72 MPa、0.164 mm.结论 下颌中切牙种植单端固定桥桥体与邻牙的梯形接触面有利于减小杠杆作用对种植体及周围骨组织产生的影响.%Objective To investigate effect of the contact surface between the bridge and the adjacent teeth on the stress distribution of the implant and bone tissue and the displacement of the prosthesis in the cantilever fixed implant bridge restoring missing mandibular central incisors. Methods Two?dimensional images of the mandible and dentition in healthy adults were obtained using CT data. A three?dimensional finite element model of cantilever fixed bridge supported by implants with mandibular central incisor was established by computer reconstruction technique.The contact surface between the bridge and the adjacent natural tooth was designed as "oval" and "trapezoid". The "trapezoid" has a slightly smaller median diameter on the labial side and a slightly larger medial diameter on the lingual side. Loading of 120 N was applied on the tangential margin of the middle line of the long axis of the bridge 41. The direction was set at 0°, which was parallel to the long axis of the tooth and downward. The buccal to lingual and downward angles were 30°, 45°and 60°, respectively, perpendicular to the long axis of the tooth and 90°to the lingual side. The stress distribution of the implant and surrounding bone tissue and the displacement of the prosthesis were compared between the two models. Results Under axial and buccolingual loading, the maximum equivalent stress peak in the implant and surrounding bone tissue in the cantilever with trapezoidal contact surface design and the maximum displacement of the prosthesis were lower. Moreover, the distribution of stress was more balanced and the concentration range of stress was smaller. With the loading angle increasing, this trend was more obvious. When loading angle increased to 90°, the maximum equivalent stress and the maximum displacement of the elliptic contact surface model implant and surrounding bone tissue were 196 and 101 MPa and 0.196 mm, respectively, while the trapezoidal contact surface model were 157 and 72 MPa and 0.164 mm, respectively.Conclusions The trapezoidal contact surface of the bridge and the adjacent teeth in the cantilever fixed bridge supported by implants with mandibular central incisor is beneficial to reduce the impact of the leverage on the implant and surrounding bone tissue.

摘要： 背景:牙弓形态的不同主要体现于前牙排列的差异,其对种植体周围应力分布有一定影响。目前对种植体支持式固定桥的三维有限元分析多在同一牙弓下进行,对不同形态牙弓下种植体支持式固定桥的生物力学研究较少。目的:利用三维有限元法,对方圆形、卵圆形及尖圆形3种牙弓形态种植体支持式固定桥进行生物力学分析。方法:依据人体颌骨锥形束CT资料,分别建立方圆形、卵圆形及尖圆形牙弓种植体支持式固定桥及其周围骨组织的三维有限元模型。沿牙冠长轴倾斜45°由舌侧向唇侧加载300 N(中切牙、侧切牙及尖牙牙冠各100 N)的力,分析种植体周围皮质骨、松质骨的Von-Mises应力分布及种植体-基台复合体位移值。结果与结论:尖圆形牙弓种植体周围皮质骨、松质骨的Von-Mises应力峰值较其余两组大,其种植体-基台复合体的最大位移较其余两组大;方圆形牙弓种植体周围皮质骨、松质骨的Von-Mises应力峰值最小,其种植体-基台复合体的最大位移较其余两组小;卵圆形牙弓结果介于二者之间。结果表明,方圆形牙弓种植体支持式固定桥表现出比尖圆形、卵圆形牙弓种植体支持式固定桥更低的应力值与更为理想的应力分布。

摘要： Mechanical complications of implant-supported prostheses, which result from stress or mechanical strength and have presented a high incidence, include a number of types such as implant fracture, screw loosening or fracture, abutment fracture, veneer fracture, framework fracture and loss of retention of the prostheses.Possible influencing factors of these complications could be the implant design, diameter and number of the implant, implant position, screw or cement retained superstructure, cantilever, oral parafunction, crown-implant ratio, precision of fabrication and material of the prostheses.Comprehensive consideration of treatment plan, surgery, fabrication and try-in of the prostheses, use and maintenance of the patients is essential in prevention and management of the mechanical complications of implant-supported fixed prostheses.%种植修复后的机械并发症,指由受力、机械强度等因素导致的并发症,发生率较高,主要包括种植体折裂、螺丝松动或折断、基台折裂、饰面折裂、修复体支架折裂、修复体松动或脱落等情况,可能原因包括种植体设计、种植体直径、种植体数目、种植体植入位置、固位方式、悬臂梁设计、口腔副功能、冠/种植体长度比、修复体制作精度、修复材料选择等方面.防范和处理种植固定修复后的机械并发症需要从治疗设计、手术、修复体加工和戴入、患者使用和复查维护等多个环节综合考虑.

摘要： Objective To investigate the interproximal contact(IC) loss rate and the associated risk factors of IC loss between posterior fixed implant prostheses and the adjacent teeth.Methods Ninety-seven posterior fixed implant prostheses including 165 IC in 78 patients(34 men, 44 women) between 23 and 76 years of age were investigated.The period after restoration ranged from 1 to 44 months.The IC between implant prostheses and adjacent teeth was evaluated using a 30-μm-thick contact gauge and dental floss, and the IC was regarded as lost when the gauge or dental floss was inserted into an IC without any resistance at follow-up visits.The state of IC, region of implant prostheses, the condition of opposing dentition, the vitality of the adjacent teeth and the time interval of tooth loss were also confirmed for correlation analysis.Results All 78 patients finished follow-up examination.Forty-eight of 165 IC(29％)were regarded as lost.The IC loss rate at the mesial aspect[75％(36/48)] was significantly greater than that at the distal aspect[25％(12/48)](x2=7.344, P=0.007).The difference between IC loss rate in the maxilla[46％ (22/48)] and that in the mandible[54％(26/48)] was not significant(x2=2.992, P=0.084).Free-end[hazard ratio (HR)=2.870], and the time interval of tooth loss(HR=0.919) affected the loss of IC significantly(P＜0.05, Cox regression analysis).Conclusions Loss of IC between posterior fixed implant prostheses and adjacent teeth was one of biological complications, which was observed frequently at follow-up visits.Patients who have the free-end fixed implant prostheses, or undergo short time interval of tooth loss before restoration may have high risk of the IC loss.%目的 探讨后牙种植冠桥修复的邻接触丧失率及其预后因素,以期为临床诊疗提供参考.方法 从临床收集78例(共97件修复体,165个邻接触位点)后牙种植冠桥修复患者,男性34例,女性44例,年龄23～ 76岁(平均44.4岁),修复体戴用时间1～44个月.以牙线和30 μm邻接触检查片无阻力通过邻接触区定义为邻接触丧失,临床复查记录种植修复体邻接触情况、种植位点、修复形式、邻牙形式、缺牙时间等情况,采用Cox回归分析筛选种植冠桥修复后邻接触丧失的预后因素.结果 78例患者165个邻接触位点的邻接触丧失率为29％(48/165).近中邻接触丧失构成比[75％(36/48)]显著多于远中[25％(12/48)] (x2=7.344,P=0.007);上颌[46％(22/48)]与下颌[54％(26/48)]邻接触丧失构成比差异无统计学意义(x2=2.992,P=0.084).Cox回归显示,修复前缺牙时间(风险比为0.919)、游离端修复(风险比为2.870)显著影响邻接触丧失的发生(P＜0.05).结论 后牙种植冠桥修复后邻接触丧失是一类发生比例较高的并发症,修复前缺牙时间短、游离端修复是其发生的预后相关因素.

摘要： 目的 评价玻璃纤维增强复合树脂粘接义齿修复前牙缺失的临床存活率并分析其影响因素.方法 选择1～3颗前牙缺失、缺牙区邻牙牙周支持丧失严重、不符合种植义齿及全冠固位固定义齿修复条件的30例患者,制作玻璃纤维(Everstick C&B)增强复合树脂粘接义齿30个.采用树脂粘接系统(Superbond C&B)进行粘接固定修复.在修复即刻、修复后1、2、3、4年分别对义齿的完全存活率、功能存活率、基牙牙槽骨高度进行记录和评估,分析失败原因.采用完全随机的单因素方差分析及卡方检验分析基牙骨高度变化.结果 修复1～3年后,每年分别出现义齿连接体折裂1例,经过树脂修补后继续使用.第3、4年各有1例连接体再次折裂后义齿整体脱落.4年随诊后,30例玻璃纤维增强复合树脂粘接义齿的完全存活率为83％ (25/30),功能存活率为93％ (28/30).22％ (13/60)的邻牙骨高度降低,而另外78％ (47/60)的邻牙骨高度增加,与修复后第1年相比差异有统计学意义(P＜0.05),邻牙牙周状况得到改善.结论 4年临床观察显示,对于1～3颗前牙缺失合并邻近基牙牙周支持受损的患者,玻璃纤维增强复合树脂粘接义齿是一种可行的固定修复方式.%Objective To evaluate the clinical performance of glass fiber reinforced resin-bonded fixed partial denture(GFR-RBFPD) as a periodontal splint on abutment teeth with reduced periodontal support.Methods Thirty fixed-fixed GFR-RBFPD were delivered to restore anterior partial edentulous dentitions.The adjacent abutment teeth had severely reduced periodontal support and were not indicated for full crown retained FPD.The success rate and functional survival rate had been recorded and the periodontal condition had been evaluated for 4 years.The results were statistically analyzed with single factor variance analysis and chi square test(α=0.05).Results In the first,second,and third year following restoration,one connector fractured in each year and they were repaired with adhesive resin and the pontics were kept in place for function.In the third and fourth years after restoration,there was one pontic displacement with fracture of connectors.The total survive rate was 83％(25/30) and the functional survival rate was 93％ (28/30) at the end of the fourth year.The main reason of failure was fracture of connector.About 22％(13/60) of the adjacent teeth showed marginal bone height decrease,while the other 78％ (47/60) increased with statistic significant difference from one year after the restoration to the end of the observation term(P＜0.05).The periodontal condition of the adjacent teeth was improved after the restoration.Conclusions The four years clinical evaluation indicates that the GFR-RBFPD may be used as fixed prostheses to replace lost one to three anterior teeth with reduced periodontal support of abutment teeth.

摘要： 目的探讨牙列缺损病人修复治疗后口腔健康相关生活质量（OHRQoL）的改变,为临床治疗方案的选择和治疗效果的评价提供依据。方法临床随机收集门诊就诊并进行修复治疗的牙列缺损病人95例,75例行可摘局部义齿（RDP）修复,20例行固定义齿（FDP）修复。采用口腔健康影响程度量表（OHIP-14）中文版分别于修复前和修复后6周测量其OHRQoL,分析修复治疗对病人OHRQoL的影响。结果两组病人义齿修复后OHIP-14总分明显降低,差异有统计学意义（Z=5.165、3.826,P〈0.01）。RDP修复后,病人经历负面影响的比例明显降低,有7个条目差异有统计学意义（χ2=6.313~26.552,P〈0.05）;而FDP修复后仅有2个条目差异有统计学意义（χ2=4.902、9.176,P〈0.05）。结论两种修复方式均可提高牙列缺损病人的OHRQoL;相比FDP修复,RDP修复后的OHRQoL提升幅度更大。

摘要： 目的：使用三维有限元模型分析4种不同底层冠设计的3单位固定桥中界面应力分布情况。方法建立三维上颌第二前磨牙缺失3单位固定桥有限元模型，并进行4种不同底层冠设计。在桥体上施加600 N的垂直方向静荷载，以模拟最大咬合力。使用有限元分析不同设计的应力分布。结果Ⅰ型设计的最大拉应力在牙合面和龈端的饰瓷和底层冠交界处集中。Ⅱ型设计的最大拉应力在牙合面的饰瓷和底层冠交界处集中，龈端应力集中于桥体底部。Ⅲ型设计和Ⅳ型设计的拉应力分散于桥体底部。结论随着饰瓷包被面积减少，最大拉应力趋于从饰瓷和底层冠交界处向桥体和连接体底部分散。%Objective To use 3-dimensional finite element modeling to simulate stresses at the in-terface of 3-unit posterior fixed partial dentures (FPDs) made with 4 different framework designs . Meth-ods A 3-unit FPD was digitized and used to create 3-dimensional models of 4 framework preparation con-figurations . A load of 600 N was applied at the central point of the pontic’s occlusion surface . The stress values of 4 framework designs were calculated by finite element analysis . Results Tensile stress of Type Ⅰ design was maximal at the occlusal and gingival veneer-core interfaces . Tensile stress of TypeⅡ design was maximal at the occlusal veneer-core interface . Tensile stresses of Type Ⅲ and Type Ⅳ de-sign extended in the bottom of pontic . Conclusion In general ,the maximal tensile stresses of veneer-core interface extend in the bottom of pontic and connecters as the veneer area was decreased .

摘要： 目的 探讨动态加载时种植桥的骨界面应力分布规律,为临床提供参考.方法 在双端种植桥修复前后的有限元模型上,模拟一个咀嚼周期0.875 s内连续性的垂直向、舌向及颊向运动,分别对两颗种植基牙和种植桥进行单独加载和共同加载.计算种植体-骨界面的应力并比较,绘制应力图.结果 修复前加载(5-｜) 牙冠,斜向加载完成时(5-｜)骨界面的应力最大值是垂直加载完成时的4.2倍.修复后同时加载两颗种植基牙的修复冠及桥体,斜向加载完成时(5 -｜)骨界面的应力最大值是垂直加载完成时的1.2倍.修复前加载在(5-｜)牙冠上,0.300 s时应力最大值为48.393 MPa;单独加载种植桥的(5-｜)修复冠,0.300 s时模型总体最大值为9.541 MPa,在(7-｜)骨界面的远中颈缘.单独加载桥体和同时加载种植基牙的修复冠及桥体时(7-｜)骨界面应力最大值在各时段末均大于(5-｜)骨界面.结论　双端种植桥减少斜向载荷的不利影响,均匀合理地分布骨界面的应力.%Objective To study the distribution patterns of stresses induced in bone tissue surrounding solely and splinted implants under dynamic loads.Methods Three dimensional finite-element models were created of two (765-｜） sections of the mandible with solely or splinted implants embedded in.Vertical and oblique dynamic loads were applied in a circle of mastication(0.875 s).The stress distribution was analyzed to study the biomechanical behavior of bone tissue surrounding solely or splinted implants.Results As loading on the solely implant （5-｜）,the maximum von Mises value in the surrounding bone tissue under oblique loads at 0.300 s was 4.2 times as much as that under vertical loads at 0.150 s.Meanwhile,as coincidently loading on the splinted implants,the maximum von Mises value at 0.300 s was 1.2 times as much as that at 0.150 s.As loading on the solely implant （5-｜）,the maximum stress value was 48.393 MPa at 0.300 s.As separately loading on the splinted implant （5-｜）,the maximum stress value of the whole model was 9.541 MPa in the same loading course,and the maximum stress was located at the distal cervical of the indirectly loaded implant （7-｜）. When loading on the pontic,the stress in bone tissue surrounding implant (7-｜） was more than that of implant （5-｜）.Conclusions Stress in the bone-interface of the splinted implants is evenly distributed at the cervical level,which may also reduce disadvantages from oblique loads.

摘要： Objective To investigate the factors associated with fixed partial denture abutment gingivitis and secondary caries.Methods Forty patients with gingivitis or secondary caries after fixed partial denture abutment were included in this study, comprising 57 abutment teeth in all (42 with gingivitis and 15 with secondary caries).The peridontal index of abutment tooth, the severity of secondmry caries and constituent ratio of dental plaques were investigated and compared between the two conditions.Results Peridontal index was comparable between patients with abutment gingivitis and those with secondary caries (P＞0.05).The constituent ratio of Staphylococci in dental plaque was significantly higher in secondary caries than in abutment gingivitis, while the constituent ratios of Spirochaetes, Fusobocterium and Eubacterium was lower in secondary caries than in abutment gingivitis (P＜0.05).Conclusion It is as equally important to protect abutment peridontal tissue after treatment.Patients should be educated to keep good oral cavity hygiene and regular clinic visit in order to reduce gingivitis and secondary caries.%目的 通过对固定义齿修复后基牙牙龈炎、继发龋的观察,分析基牙牙龈炎、继发龋与牙周组织及菌斑的关系.方法 收集固定义齿修复后出现牙龈炎、继发龋的病例40例,共57颗固定义齿修复体,其中基牙牙龈炎42颗,继发龋15颗.观察基牙的牙周指数、继发龋坏的情况以及菌斑细菌构成比.结果 基牙牙龈炎组与继发龋组的牙周指数差异无统计学意义(P>0.05).基牙继发龋组牙菌斑中球菌的构成比高于基牙牙龈炎组,螺旋体、梭形杆菌和真杆菌的构成比低于基牙牙龈炎组,差异有统计学意义(P<0.05).结论 固定义齿修复后牙周组织的保护同样很重要.固定义齿修复后要对患者进行口腔卫生宣教,指导患者注意保持口腔卫生,定期复诊,以减少牙龈炎、继发龋的发生.

摘要： 本发明涉及一种用于制造牙齿的假体的模制品，例如局部义齿或全口义齿的方法，模制品由至少一个义齿或一个义齿齿弧的生产制造的实心体模型制造为多层的，其中，义齿在内部的牙颈侧上具有髓腔，髓腔中填充有牙本质颜色的、能够聚合的组合物。这种组合物随后在至少一个步骤中聚合。具有牙本质颜色的组合物的至少一个义齿以其颈侧放置在义齿基托的牙齿侧的表面上并且共同压合。随后，获得的局部义齿或全口义齿在光固化装置中完全地固化。同样地，本发明的主体是一种通过根据本发明的方法获得的假体模制品。

摘要： 本发明涉及一种用于制造牙齿的假体的模制品，例如局部义齿或全口义齿的方法，模制品由至少一个义齿或一个义齿齿弧的生产制造的实心体模型制造为多层的，其中，义齿在内部的牙颈侧上具有髓腔，髓腔中填充有牙本质颜色的、能够聚合的组合物。这种组合物随后在至少一个步骤中聚合。具有牙本质颜色的组合物的至少一个义齿以其颈侧放置在义齿基托的牙齿侧的表面上并且共同压合。随后，获得的局部义齿或全口义齿在光固化装置中完全地固化。同样地，本发明的主体是一种通过根据本发明的方法获得的假体模制品。

摘要： 一种用于总义齿和局部义齿颌记录的基托型蜡，由上颌基托型蜡、下颌基托型蜡、上颌蜡堤和下颌蜡堤组成；上颌基托型蜡和下颌基托型蜡均是按人类口腔解剖形态制成的弓槽形结构，上颌蜡堤和下颌蜡堤均是按人类牙列生理解剖形态制成的弓形结构。上颌蜡堤和下颌蜡堤的咬合面具有舌颊向和唇颚向横槽或多个锥形齿。使用该型蜡可使临床采集颌记录操作简单，取得的颌记录信息准确全面，从而使后期制作的修复义齿更精确，配戴舒适而美观。

摘要： 一种用于总义齿和局部义齿颌记录的基托型蜡，由上颌基托型蜡、下颌基托型蜡、上颌蜡堤和下颌蜡堤组成；上颌基托型蜡和下颌基托型蜡均是按人类口腔解剖形态制成的弓槽形结构，上颌蜡堤和下颌蜡堤均是按人类牙列生理解剖形态制成的弓形结构。使用该型蜡可使临床采集颌记录操作简单，取得的颌记录信息准确全面，从而使后期制作的修复义齿更精确，配戴舒适而美观。

摘要： 本实用新型公开了一种用于局部义齿摘取卡环固定装置，包括牙齿，牙齿的一侧设有局部义齿，局部义齿包括下牙仓，下牙仓上连接有上牙仓，下牙仓上连接有调节机构，调节机构包括限位拉杆，限位拉杆两侧均设有一对限位块，一对限位块均与下牙仓相连接，限位拉杆上连接有转动杆，转动杆贯穿下牙仓设置，转动杆上连接有弹性固定绳，弹性固定绳贯穿下牙仓与转动杆设置。本实用新型通过对局部义齿进行相应的机构加装，减少了局部义齿在使用过程中发生位置偏移的可能性，使得局部义齿的使用更加稳定，减少了使用者重新佩戴义齿所花费的时间，降低了局部义齿在使用时被损坏的风险，增加了局部义齿的使用寿命。

摘要： 本实用新型涉及义齿固定结构技术领域，具体为可快速固定义齿的用于牙科烤瓷炉的义齿固定结构，包括义齿，义齿的底部设置有定托柱，定托柱固定在横杆的表面，横杆固定在套筒的顶面，横杆插接在通孔中，通孔开设在夹持条的表面，夹持条的表面设置有限位块，限位块插接在导向槽中，导向槽开设在套管的外环面，限位块的表面嵌入安装有滚珠，套筒的外环面设置有卡指杆；有益效果为：本实用新型提出的可快速固定义齿的用于牙科烤瓷炉的义齿固定结构在义齿的两侧加设夹持条限位，夹持条被套管顶推移动，套管螺接在横杆上，套管实现对夹持条的限位，且横杆表面加设定托住支撑义齿，义齿被固定后，将套筒套在烤瓷炉内部的方形限位柱上即可。

摘要： 本实用新型属于义齿加工设备技术领域，提供了一种可快速固定义齿的用于牙科烤瓷炉的义齿固定结构，包括安装框和支撑台、放置槽、夹紧片、连杆、承重盘、凸轮、转轴、转盘和锁定结构，支撑台固定设置在安装框的顶部，支撑台的顶部设置有安装槽，放置槽设置在安装槽内，夹紧片与放置槽铰接，连杆的顶部与放置槽的底部固定连接，且连杆的底部与承重盘固定连接，承重盘设置在内腔内，凸轮通过转轴设置在内腔内，且凸轮的外周面与承重盘抵接，转轴的两端与安装框转动连接，转盘位于安装框外、并与转轴固定连接，锁定结构用于对转盘进行锁定。本实用新型所提供的一种可快速固定义齿的用于牙科烤瓷炉的义齿固定结构，安放义齿的效率更高。

摘要： 一种用于总义齿和局部义齿颌记录的基托型蜡，由上颌基托型蜡、下颌基托型蜡、上颌蜡堤和下颌蜡堤组成；上颌基托型蜡和下颌基托型蜡均是弓槽形结构，上颌蜡堤和下颌蜡堤均是弓形结构。使用该型蜡可使临床采集颌记录操作简单，取得的颌记录信息准确全面，从而使后期制作的修复义齿更精确，配戴舒适而美观。

摘要： 一种总义齿和局部义齿牙列的排牙导槽，由上颌义齿牙列颌面形腔和下颌义齿牙列颌面形腔组成。上颌义齿牙列颌面形腔和下颌义齿牙列颌面形腔均是由14颗义齿颌面形腔连在一起制成牙槽弓形结构，使牙列颌面形腔的颌面为平面；这14颗义齿牙列颌面形腔与人类口腔解剖生理特点和自然牙齿在口腔中的固有颌面位置相对应。本实用新型的优点是：能设计成16种样板牙列颌面模型，因此医生在为病人镶牙时，可按病人口腔的形状和尺寸，选择相应的形状和尺寸，对病人直接镶牙，只需要稍微整理和成型，即可使用。使操作更加简单、高效、降低工作强度，减少病员就诊次数，缩短等待镶复义齿时间，提高义齿修复成功率。

摘要： 一种预成总义齿和局部义齿的牙列，由上颌义齿牙列和下颌义齿牙列组成。上颌义齿牙列和下颌义齿牙列均是由14颗义齿连在一起预制成牙槽弓形结构，这14颗义齿依据人类口腔解剖生理特点和自然牙齿在口腔中的固有位置排列。本实用新型的优点是：本设计科形成16种样板牙列模型。因此医生在为病人镶牙时，可按病人口腔的形状和尺寸，选择相应的形状和尺寸，对病人直接镶牙，只需要稍微整理和成型，即可使用。使操作更加简单、高效、降低工作强度，减少病员就诊次数，缩短等待镶复义齿时间，提高义齿修复成功率。