套筒冠及附着体固位赝复体应用于单侧上颌骨缺损修复的临床效果评价

目的研究套筒冠及附着体固位的阻塞器式赝复体修复单侧上颌骨缺损的临床效果。方法收集自2006年6月—2011年6月17例因肿瘤切除单侧上颌骨的病例,制作利用套筒冠及附着体固位的阻塞器式赝复体,通过吸光度法比较修复前和修复后1个月咀嚼效率变化,研究套筒冠及附着体固位阻塞器式赝复体的临床应用效果。结果临床观察得知,17例患者对套筒冠及附着体固位阻塞器式赝复体均表示满意,语音功能恢复良好,修复前吸光度值为0.385±0.162,戴用1个月后吸光度值为0.544±0.136,差异有显著统计学意义(P<0.05)。结论套筒冠及附着体固位阻塞器式赝复体能较好恢复单侧上颌骨缺损患者的面容和语音功能,戴用后咀嚼效率有明显改善,临床效果满意。     

单侧上颌骨缺损修复的临床体会

目的：通过单侧上颌骨缺损修复的临床实践,探讨其修复方法。方法：对１０８例单侧上颌骨缺损病例进行临床调查,从固位设计、基托设计、阻塞器设计及减小 力４个方面分别进行临床分析。结果：１０８例近期效果基本良好,２４例 ６个月至 ２年随访,２例基牙松动Ⅰ～Ⅱ°,１１例基托不密合,１５例能咀嚼一般食物,２２例基本恢复语言功能。结论：１ 固位设计应在保护基牙的情况下,尽量利用剩余牙承力,以加强平面固位作用。２．加大基托面积,利用组织倒凹辅助义齿固位。３采用低位中空阻塞器并减小 力,以利于义齿固位。     

Obturator prosthesis design for acquired maxillary defects.

Fabrication of obturator prostheses does not require a special ability to fabricate a prosthesis extension into a defect or an arbitrary extension of a prosthesis into a defect. Fabrication of an obturator prosthesis depends on the application of basic prosthodontic principles that are used in the treatment of patients without maxillary defects. Some principles must be modified because of the defect and the character and position of the remaining structures. The defect, in conjunction with the remaining structures, must be used to provide support, retention, and stability of an obturator prosthesis. If basic prosthodontic principles are applied the size and extension of the obturator will be determined, and the extensive variation so commonly seen in obturators will be minimized. Acceptable prosthodontic care for the patient with the acquired maxillary defect should include cautious prosthesis design combined with routine maintenance care to provide comfort, function, cosmetics, and minimal change to the compromised remaining structures.     

上颌骨缺损伴张口受限的磁性附着体分段式赝复体修复

目的探讨上颌骨缺损伴张口受限患者应用磁性附着体连接分段式赝复体修复的临床特点和疗效。方法选择15例上颌骨缺损患者,其中8例伴有张口受限。依据术后修复时间及张口情况分别选择磁附着体连接分段式赝复体和一体式中空赝复体进行修复,测定咀嚼效率、进行语音清晰度评价和临床效果评价。结果使用磁性附着体连接分段式赝复体可使上颌骨缺损伴张口受限病人提前进行修复,而且分段式赝复体摘戴方便,固位稳定,发音得到良好的改善,美观也有一定恢复。磁性附着体连接分段式赝复体咀嚼效率高于一体式中空赝复体(P<0.05),两类赝复体和语音清晰度评价没有差别(P>0.05)。结论上颌骨缺损伴张口受限患者,应用磁性附着体连接分段式赝复体修复能达到比较满意的效果。     

卡环联合中空式赝复体修复上颌骨前部缺损的临床效果评价

目的:探讨应用卡环联合中空式赝复体修复超出前牙区的上颌骨前部缺损的临床效果.方法:选取2018年03月至2020年11月于徐州市中心医院口腔科就诊的7例超出前牙区的上颌骨前部缺损患者,术后3个月采用卡环联合中空型铸造支架式赝复体进行修复,比较赝复体修复前和修复后1个月的咀嚼效率、语音清晰度及吞咽功能,并进行临床主观性评...     

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目的    探讨一侧上颌骨缺损应用赝复体修复的临床效果。方法    以2007年9月至2009年9月中国医科大学口腔医学院修复科收治的10例一侧上颌骨缺损患者为研究对象,制作上颌赝复体修复缺损部分。分别于修复前与修复后1个月,采用宋兆峻法测定咀嚼效率、主观语音清晰度测试法测试语音清晰度值,并进行患者的自我临床效果评价。结果    一侧上颌骨缺损应用赝复体修复1个月后,咀嚼效率与语音清晰度值均得到明显的提高,患者自我临床效果评价良好。结论    赝复体修复一侧上颌骨缺损可以得到良好的修复效果。     

软衬式赝复体修复单侧上颌骨缺损的疗效分析

目的探讨应用软衬式赝复体修复单侧上颌骨缺损的临床效果。 方法以2010年9月至2014年9月北京大学深圳医院口腔科收治的16例单侧上颌骨缺损的患者为研究对象,制作软衬式赝复体修复上颌骨缺损部分。分别测量患者术后戴入赝复体前和戴入赝复体1个月后的咀嚼效率和语音清晰度值。 结果单侧上颌骨缺损应用赝复体修复1个月后,咀嚼效率与语音清晰度值差异有统计学意义(t_咀嚼效率=-2.33,P_咀嚼效率=0.034;t_{语音清晰度}=-2.49,P_{语音清晰度}=0.029)。 结论软衬式赝复体修复单侧上颌骨缺损可以取得良好的修复效果。     

Clinical results of the maxillary protraction in Korean children

Sixty subjects with ages ranging from 8 to 13 years were divided into two groups according to the intraoral appliances used. Group I consisted of 47 subjects with rapid palatal expansion (RPE) appliances and group II consisted of 13 subjects with labiolingual appliances (La/Li). Group I was subdivided into three subgroups by age and two subgroups by the timing of the protraction. The cephalometric radiographs of all subjects were analyzed before and after correction of anterior crossbite. The following results were obtained: (1) After maxillary protraction, the maxilla and maxillary dentitions moved forward and downward, and the mandible and mandibular dentitions moved backward and downward. (2) The maxilla moved more forward in the RPE group, compared with La/Li group. (3) The palatal plane angle decreased more in the protraction-during-palatal-expansion group than protraction-after-palatal-expansion group. (4) Age did not show any statistically significant difference. (Am J Orthod Dentofac Orthop 1995;108:583-92.)     

Late results of treatment of maxillary fractures

In the period of 3 years, from 1984 to 1986 in the Department of Maxillofacial Surgery, Institute of Stomatology, Medical Academy in Warsaw 230 patients were treated for maxillary fractures. Late results of this treatment were assessed in 102 patients coming for control examinations in 1988. In the assessment of the therapeutic results the following features were considered: facial symmetry, proportions of three facial segments, functions of the visual system and stomatognathic system, nasal patency, and sensory disturbances in the area innervated by the infraorbital nerves. On the basis of this late assessment of the results of treatment of these fractures it was found that the definite morphological-functional and aesthetic results were unsatisfactory in cases of Le Fort III and II type maxillary fractures. This points out that the therapeutic methods used as yet are not sufficiently satisfactory and other methods should be evolved.     

The late results of using evicrol and stomadent for eliminating dental tissue defects in children]

Clinical analysis of the efficacies of evikrol and stomadent used to replace dental hard tissue defects in children has shown similar results, but stomadent is preferable because the filling made of it virtually does not change its color. The authors claim that the development of such complications as caries recurrence, change of the color of the filling in sites of their union with dental tissues, abnormal edge union is related to the technique of enamel acid tanning of immature children's teeth, that should be modified.     

Long-term results of orthodontic treatment of impacted maxillary canines

A total of 61 children who had 83 maxillary canines impacted were followed up for a mean of 3.5 years (range 1.1-10.9 years) after treatment to evaluate the long-term results of the treatments. In most of the children, the impacted maxillary canines had been surgically exposed and treated with fixed orthodontic appliances. In 11 cases, lateral incisors had been extracted because of extensive root resorption. The esthetic results as well as functional and periodontal conditions were evaluated. Only four of the 61 children were not satisfied with the esthetic result, whereas orthodontists judged only 56% of the results as esthetically acceptable on clinical evaluation and 57% as esthetically acceptable on color slides. The periodontal conditions and the occlusal function on sides with previously impacted canines and on sides with normally erupted canines, on the whole, were similar. Exceptions were pocket depths of the left lateral incisors and left canines, but these variables were significantly different mainly because of one patient. In lateral movements of the mandible, however, significant differences in contact pattern were found between sides with normally erupted canines and sides with impacted canines. Canine rise occurred more often on working sides with normally erupted canines than with impacted canines.     

Guided tissue regeneration in the treatment of infrabony defects on maxillary premolars

The present study evaluated clinically and radiographically the short-term results of the healing of infrabony defects at maxillary premolars treated according to guided tissue regeneration (GTR). 9 patients with bilateral presence of infrabony defects with or without furcation involvements at maxillary premolars were selected. At baseline assessments of plaque and gingival indices, bleeding, probing pocket depth and attachment level, and furcation measurements were recorded. Conventional radiographs were obtained in a way that assured a reproducible projection geometry. One premolar was randomly treated with GTR and the contralateral with open debridement. Clinical and radiographic examinations were performed again 6 months postoperatively. The bone tissue changes were assessed by means of conventional radiographs and subtraction images. Sites treated by both procedures demonstrated an improvement of gingival conditions and a reduction of pocket depths. A statistically significant attachment gain was obtained for the test (mean 1.2 mm), but not for the control sites (mean 0.6 mm). The differences, though, were not significant between the test and control sites. Limited improvement in furcation closure was recorded. The radiographic examination demonstrated loss of bone tissue in four sites treated with GTR. The findings suggest that the regeneration of the periodontal soft and bone tissues was not significantly enhanced with the GTR therapy.     

Epithetic treatment of facial defects]

The author deals with the aetiology and location of facial defects treated prosthetically during 1974-1975. Treatment methods currently used at the Rostock University Clinic and Policlinic of Stomatology are presented with special regard to constructions developed in this clinic. The importance of the choice of an appropriate material and of the possibility of secure anchoring is pointed to. In spite of certain disadvantages which should not be underrated, facial prostheses have proved useful for temporary treatment and also for definite treatment     

Planning of orthodontic treatment in patients with maxillary dentition defects using mathematical methods

Stress-deformed status of bone tissue in the implantation zone was studied. The relationship between the level of strain in the spongy and cortical layers of the bone and spatial location of the implant in the jaw and its geometrical parameters is demonstrated. Numerical analysis of the level of bone tissue stress was carried out on the basis of experimentally created three-dimensional solid-body model of the maxilla. The process of changes in the distribution of tensions during different phases of mastication was investigated. The potentialities of numerical analysis in the planning of orthodontic treatment of patients with dentition defects making use of implants are demonstrated.