Studies on maintenance plan for partially edenturous dentition reconstructed by prosthodontic treatment

为明确部分无牙颌患者修复牙合的维护方案，对义齿清洁剂和义齿表面光滑剂的使用效果、新型修复材料的研制和整体铸造法钛合金义齿支架的测量误差进行了临床观察。义齿清洁剂和义齿表面光滑剂对义齿菌斑控制效果的观察1)义齿菌斑在数小时内沉积。附着斑块面积有个体差异、地区差异和食物差异。在义齿植入后8小时内，牙菌斑覆盖了上颌磨牙区43%的口腔表面。2)市面上的义齿清洁剂清洁良好。3)当使用义齿光洁剂时，戴用义齿8小时后，义齿菌斑沉积面积占口腔磨光表面…的304)使用义齿表面光亮剂时，大多数义齿清洁剂浸入义齿表面10分钟左右，牙菌斑被清除。5)老年患者使用义齿表面时，义齿沉淀物较少，比不使用光亮剂时更容易清洁。1)义齿基托修复材料的开发提高了义齿的适合性，但常用的修复材料在制备过程中存在刺激性和口感差等问题。因此，开发了一种新的无刺激性修复材料，用于直接修复方法。2)由于底层组织较薄，许多病例难以准备疼痛的主诉。对于这些患者，需要在基底面和软组织之间放置一种弹性材料。因此，开发了一种适用于直接重修的新型弹性重修材料。钛合金义齿支架的测量误差对整体铸造法测量钛合金义齿支架的误差进行了研究。钛合金整体铸造时，基牙间距较钴铬合金整体铸造时略有膨胀。因此，有必要改善钛铸件骨架的测量误差。较少

To clarify the maintenance plan for partially edentulous patients reconstructed their occlusion in prosthodontic treatment, clinical observation for effect of denture cleanser and denture surface smoother, development of new relining material and the measuring error of denture frame work of titanium alloy by one-piece cast method were investigated.1. Observation on the effect of denture cleanser and denture surface smoother on denture plaque control1) Denture plaque is deposited within a few hours. The area of attached plaque shows individial difference, regional difference and difference by foods. Within 8 hours after denture insertion, plaque had covered 43% of the buccal surface of upper molar region.2) The denture cleanser available on the market cleaned well. 20minite's cleansing with them removed between 80% to 90% of the denture plaque.3) When denture smoother was used, 8 hours after wearing of denture, denture plaque deposit area accounted for 30% of the buccal polished surface … More in the upper molar region.4) When denture surface smoother was used, pratically all plaque was removed from the denture surface about 10 minites immmersion in most of denture cleanser.5) When denture surface was used to aged patients, less denture deposit and more easy to clean their denture obserbed than when no smoother was used.2. Development of new relining material1) Relining for the denture base improves denture fitness, however, usual material of the relining makes much irritation and bad taste during preparation. Therefore, a new no-irritation relining material for direct relining method is developed.2) There are many cases difficult to prepare the complaint of pain caused by thin underlying tissues. For these patients, it is needed to seat a resilient material between basal surface and soft tissue. Therefore, a new resilient relining material for direct relining method is developed.3. Measuring error on denture frame work of Titanium alloyMeasuring error on denture frame work of Titanium alloy by one-piece cast method were investigated. When the frame work was prepared to Titanium alloy by one-piece cast mehod, a little more expansion showed in inter-abutment distance compaired with original dimensions than when it was prepared to Co-Cr alloy by one-piece cast method. Then, it is necessary to improve the measuring error on Titanium cast framework. Less