發(fā)布時(shí)間：2018-07-16 23:55

【摘要】：目的：研制氧化鋯基臺(tái)并檢測(cè)其與種植體的配合狀態(tài)以及探討其抗折強(qiáng)度為臨床應(yīng)用提供依據(jù)。 方法：選用納米氧化鋯粉,采用注射成型工藝制作與Dentium Superline系統(tǒng)種植體相匹配的氧化鋯牙種植基臺(tái)；使用光學(xué)影像儀對(duì)氧化鋯基臺(tái)進(jìn)行達(dá)標(biāo)檢測(cè),依照公差要求剔除不合格基臺(tái)；隨機(jī)選取氧化鋯基臺(tái)40枚和Dentium Superline系統(tǒng)種植體40枚,將氧化鋯基臺(tái)與Dentium Superline系統(tǒng)種植體裝配并用中央固位螺絲固定,加力前后各拍攝牙片一張,用Digora for windows2.6軟件進(jìn)行測(cè)量檢測(cè)二者配合狀態(tài),所加扭力矩為30N·cm；再將組件隨機(jī)分為A、B兩組(每組20個(gè)),兩組組件分別以兩種不同方式固定于不銹鋼夾具中并置于萬(wàn)能試驗(yàn)機(jī),A組組件模擬口腔內(nèi)種植體齦水平植入方式固定(種植體上端平面與夾具平面之間的距離為3mm),B組組件模擬口腔內(nèi)種植體骨水平植入方式固定(種植體上端平面與夾具平面之間的距離為0mm)；萬(wàn)能試驗(yàn)機(jī)的壓頭與種植體-氧化鋯基臺(tái)組件長(zhǎng)軸成90°角、壓頭位于距種植體上端平面3mm處的基臺(tái)上,以0.5mm/min的加載速度對(duì)基臺(tái)施加壓力,直至基臺(tái)損壞,記錄基臺(tái)破損時(shí)萬(wàn)能試驗(yàn)機(jī)所顯示的壓力數(shù)據(jù)；應(yīng)用SPSS17.0統(tǒng)計(jì)學(xué)軟件對(duì)兩組數(shù)據(jù)進(jìn)行t檢驗(yàn)。 結(jié)果： 1.氧化鋯基臺(tái)與種植體的配合狀態(tài)： X線衍射結(jié)果顯示氧化鋯基臺(tái)與種植體裝配并用中央固位螺絲固定加力后基臺(tái)向種植體內(nèi)平均移動(dòng)了0.18±0.02mm,其錐度連接處的微間隙得到關(guān)閉,達(dá)到過(guò)渡配合狀態(tài)。 2.氧化鋯基臺(tái)的抗折強(qiáng)度： A組氧化鋯基臺(tái)的平均抗折強(qiáng)度為282.93±17.28N,B組氧化鋯基臺(tái)的平均抗折強(qiáng)度為420.72±13.64N；B組平均抗折強(qiáng)度明顯高于A組,二者差異具有統(tǒng)計(jì)學(xué)意義(P0.05)。 結(jié)論： 1.自制的氧化鋯基臺(tái)與種植體能由間隙配合達(dá)到過(guò)渡配合狀態(tài),邊緣封閉性良好。 2.模擬口腔內(nèi)種植體骨水平植入方式更接近口腔內(nèi)真實(shí)條件,檢測(cè)得到基臺(tái)的抗折強(qiáng)度更加可靠可信。
[Abstract]:Objective: to develop zirconia base set, to detect its coordination with implants and to study its flexural strength for clinical application. Methods: Nano-zirconia powder was used to fabricate the implant abutment of Zirconia teeth matched with Dentium Superline system, and the optical imaging instrument was used to detect the standard of Zirconia abutment, and to eliminate the unqualified abutment according to the tolerance requirement. Forty Zirconia bases and 40 Dentium Superline implants were randomly selected. The Zirconia base and Dentium Superline implants were assembled and fixed with central retention screws. Digora for windows2.6 software was used to measure the matching state of the two systems, and the torsional torque was 30N cm. Then the components were randomly divided into two groups (20 in each group). The two groups were fixed in two different ways in stainless steel fixture and placed in a universal testing machine. Group A was imitated by horizontal implant implantation in oral cavity. The distance between the upper end plane of the implant and the fixture plane was 3mm). Group B was imitated with the implant bone horizontal implantation (the distance between the upper end plane and the clamp plane was 0mm). The head of the universal testing machine is at 90 擄angle with the long axis of the implant / zirconia base assembly. The head is located on the base platform located at the plane of 3mm from the upper end of the implant. The pressure is applied to the base at the loading speed of the 0.5mm/min until the base is damaged. The pressure data of the universal testing machine when the base platform was damaged were recorded, and two sets of data were tested by SPSS 17.0 statistical software. Results: 1. Coordination of Zirconia Base with Implant: X-ray diffraction results show that the Zirconia base and implant are assembled with central retainer screw to fix the post and the base moves 0.18 鹵0.02 mm to the implant on average, and its taper is connected. The microgap is closed, To the transition state. 2. The average flexural strength of Zirconia base set in group A was 282.93 鹵17.28 Nu B, the average flexural strength of group B was 420.72 鹵13.64 NX, the difference was statistically significant (P0.05). Conclusion: 1. The self-made zirconia base and implant have the transition fit state from the gap fit, and the edge closure is good. 2. The method of simulating oral implant bone level implantation is closer to the true condition of oral cavity, and the flexural strength of the abutment is more reliable.
【學(xué)位授予單位】：青島大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：R783.6

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