本文選題：等離子噴涂　切入點(diǎn)：納米氧化鋯　出處：《山東大學(xué)》2015年碩士論文

【摘要】：背景：基臺(tái)是連接種植體和上部修復(fù)體的重要結(jié)構(gòu),目前臨床上應(yīng)用的純鈦基臺(tái)有著良好的生物相容性和與種植體的摩擦配副,但純鈦基臺(tái)在種植體肩部位置較高或牙齦較薄的前牙區(qū)的患者中,基臺(tái)金屬顏色暴露嚴(yán)重影響病人的美觀,降低病人的滿(mǎn)意度。氧化鋯基臺(tái),其優(yōu)秀的生物相容性和美學(xué)性能更能滿(mǎn)足患者和修復(fù)醫(yī)生的要求,然而瓷基臺(tái)的強(qiáng)度較低、脆性較高且易于折裂崩斷。因此,針對(duì)純鈦基臺(tái)和氧化鋯基臺(tái)在美觀性和機(jī)械性能方面的缺陷,實(shí)驗(yàn)設(shè)計(jì)在純鈦基臺(tái)的穿齦部分增加氧化鋯涂層,保留純鈦基臺(tái)與鈦種植體及中央螺絲的各個(gè)界面的聯(lián)結(jié),避免了不同材料形成的摩擦配副的配合差異,同時(shí)基臺(tái)穿齦部分采用氧化鋯瓷層解決了美觀問(wèn)題。這種兼容氧化鋯基臺(tái)的美觀和生物相容性及純鈦基臺(tái)的機(jī)械相容性的新型基臺(tái)實(shí)現(xiàn)能夠恢復(fù)最大的功能和最佳的美觀的種植義齒,具有廣闊的市場(chǎng)前景和較高的臨床應(yīng)用價(jià)值。目的：制備等離子噴涂納米氧化鋯-鈦基臺(tái),其上部制備氧化鋯全瓷冠,通過(guò)斷裂力值檢測(cè)、咀嚼模擬試驗(yàn)及熱負(fù)荷加載試驗(yàn)評(píng)價(jià)等離子噴涂納米氧化鋯-鈦基臺(tái)的機(jī)械相容性,為該材料實(shí)現(xiàn)其臨床應(yīng)用價(jià)值,在機(jī)械性能方面提供客觀的理論依據(jù)。方法：制備一段式純鈦種植體,根據(jù)頸部直徑分為四組,四組直徑分別為A組2.6mm、B組2.Omm、C組1.8mm、D組1.6mm,其中A組為標(biāo)準(zhǔn)對(duì)照組。B、C、D三組種植體頸部制備等離子噴涂納米氧化鋯涂層,使三組頸部直徑均達(dá)到標(biāo)準(zhǔn)對(duì)照組的2.6mm。按標(biāo)準(zhǔn)工藝程序完成上部氧化鋯全瓷冠的樹(shù)脂粘接修復(fù)。對(duì)制備好的試件進(jìn)行斷裂力值檢測(cè)及人工老化試驗(yàn)。1.人工老化試驗(yàn) 將A、B、C、D每組6個(gè)種植體-基臺(tái)-冠聯(lián)接試件固定于冷熱循環(huán)機(jī)械載荷(thermocycling and mechanical loading, TCML)咀嚼模擬疲勞實(shí)驗(yàn)機(jī)上進(jìn)行咀嚼模擬試驗(yàn)和熱負(fù)荷加載試驗(yàn)。觀察試件是否出現(xiàn)折裂、破損、裂紋。然后拆除試件上部全瓷冠修復(fù)體進(jìn)行斷裂力值檢測(cè)。2.斷裂力值檢測(cè)將所有一段式純鈦種植體試件進(jìn)行斷裂力值檢測(cè)。將1mm厚的雙層錫箔紙放置于每個(gè)試件與加載頭之間。利用萬(wàn)能試驗(yàn)機(jī)對(duì)基臺(tái)施以1.5 mm/min、與種植體長(zhǎng)軸成45°的負(fù)荷,直至試件斷裂,記錄斷裂時(shí)相應(yīng)數(shù)據(jù)及試件斷裂部位。其中,本實(shí)驗(yàn)設(shè)計(jì)的人工老化試驗(yàn)包括咀嚼模擬試驗(yàn)和熱負(fù)荷加載試驗(yàn)。結(jié)果：人工老化試驗(yàn)后所有試件均未出現(xiàn)折裂、破損或裂紋。斷裂力值檢測(cè)中基臺(tái)折裂部位均發(fā)生在頸部,人工老化和未人工老化的試件斷裂力值統(tǒng)計(jì)分析結(jié)果見(jiàn)表1,B、C、D三組斷裂力值均大于日常咀嚼所需力值,但明顯小于A組,各組試件之間均有統(tǒng)計(jì)學(xué)差異,見(jiàn)表2。但四組試件人工老化前后比較無(wú)統(tǒng)計(jì)學(xué)差異,見(jiàn)表3、圖1。結(jié)論：以上實(shí)驗(yàn)顯示本實(shí)驗(yàn)小組制備的等離子噴涂納米氧化鋯-鈦試件的機(jī)械相容性滿(mǎn)足臨床應(yīng)用的需要,為此材料的臨床應(yīng)用提供了理論依據(jù)。
[Abstract]:Background: the abutment is an important structure connecting the implant and the upper prosthesis. At present, the pure titanium abutment used in clinic has good biocompatibility and friction pair with the implant.But in the patients with pure titanium abutment in the upper shoulder of implant or in the anterior teeth with thinner gingival, the metal color exposure of the abutment seriously affected the beauty of the patients and reduced the satisfaction of the patients.The excellent biocompatibility and aesthetic properties of zirconia base platform can meet the needs of patients and repair doctors. However, the porcelain base table has lower strength, higher brittleness and easy to break and break.Therefore, aiming at the defects of the pure titanium base and zirconia base in beauty and mechanical properties, the experiment designed to add zirconia coating to the gingival part of the pure titanium base, so as to retain the connection between the pure titanium base and the titanium implant and the interface of the central screw.The matching difference of friction pair formed by different materials was avoided, and zirconia ceramic layer was used to solve the aesthetic problem in the gingival part of the base platform.This new type of abutment which is compatible with the aesthetics and biocompatibility of zirconia and the mechanical compatibility of pure titanium abutment can restore the maximum function and the best aesthetic implant denture. It has broad market prospect and high clinical application value.Objective: to prepare plasma sprayed nano-zirconia titanium base platform, and to prepare zirconia all-ceramic crown in the upper part of the platform.The mechanical compatibility of plasma sprayed nano-zirconia titanium substrate was evaluated by mastication simulation test and thermal load loading test, which provided an objective theoretical basis for the material to realize its clinical application value and to provide an objective theoretical basis for its mechanical properties.Methods: One-segment pure titanium implant was prepared and divided into four groups according to the neck diameter. The diameter of each group was 2.6 mm in group A and 1.8 mm in group B and 1.6 mm in group D, respectively. The plasma sprayed nano-zirconia coating was prepared in group A as standard control group.The neck diameter of the three groups was up to 2.6 mm. of the standard control group.The resin bonding restoration of the upper zirconia all-ceramic crown was completed according to the standard process.The fracture force value of the prepared specimen and the artificial aging test. 1.The artificial aging tests were carried out on a mechanical load cycle thermocycling and mechanical loading (TCML) machine for mastication simulation and thermal load loading.Observe whether the specimen is cracked, damaged and cracked.The fracture force value of all ceramic crown prosthesis in the upper part of the specimen was measured. 2. 2.The fracture force of all titanium implant specimens was tested.Place 1mm thick double foil paper between each specimen and the loading head.The universal testing machine was used to apply 1.5 mm / min to the abutment, and the load was 45 擄with the long axis of the implant, until the specimen was broken, and the corresponding data and the fracture site of the specimen were recorded.Among them, the artificial aging test designed in this experiment includes mastication simulation test and thermal load test.Results: no fracture, breakage or crack was found in all specimens after artificial aging test.The fracture force values of the base platform were all located in the neck. The results of statistical analysis of the fracture force values of the artificial and unaged specimens were shown in Table 1, the fracture force values of the three groups were higher than those of the daily masticatory force, but significantly smaller than those of the A group, and the results of statistical analysis showed that the fracture force values of the three groups were higher than those of the daily masticatory forces.There is a statistical difference among the groups, as shown in Table 2.However, there is no statistical difference between the four groups before and after artificial aging, see Table 3, figure 1.Conclusion: the experimental results show that the mechanical compatibility of plasma sprayed nano-zirconia-titanium specimen can meet the needs of clinical application, which provides a theoretical basis for the clinical application of the material.
【學(xué)位授予單位】：山東大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：R783.6

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