本文選題：托槽底板 + 樹脂加強(qiáng)型玻璃離子�。� 參考：《山東大學(xué)》2017年碩士論文

【摘要】：目的臨床上應(yīng)用的光固化類的托槽粘結(jié)劑會受到固化深度的影響。為改善金屬托槽的透光性,提高金屬托槽的早期粘結(jié)強(qiáng)度,我們設(shè)計(jì)了一種底板帶有通孔的金屬托槽。本研究對底板帶有通孔的金屬托槽與常規(guī)網(wǎng)狀底板金屬托槽應(yīng)用GC(樹脂增強(qiáng)型玻璃離子)粘接光固化后即刻及10至15分鐘的抗剪切強(qiáng)度及托槽脫落后牙面上粘結(jié)劑殘留指數(shù)進(jìn)行對照研究,為該新型托槽的改進(jìn)與臨床應(yīng)用提供實(shí)驗(yàn)依據(jù)和參考。材料與方法選取臨床上因正畸需要而拔除的人離體上頜第一前磨牙4 0顆,隨機(jī)分為A1、A2、B1、B2共4組,每組10顆。A1、A2組選用杭州星辰三比齒科器材有限公司生產(chǎn)的上頜第一前磨牙滑動(dòng)網(wǎng)底直絲弓托槽,B1、B2組托槽選用杭州星辰三比齒科器材有限公司生產(chǎn)的上頜第一前磨牙滑動(dòng)網(wǎng)底直絲弓托槽,并用高速渦輪車針在托槽底板上制備貫通底板全層的3個(gè)通孔。各組托槽均采用GC(樹脂增強(qiáng)型玻璃離子)進(jìn)行粘結(jié)。A1、B1組托槽在粘接光固化1分鐘至2分鐘應(yīng)用萬能材料力學(xué)實(shí)驗(yàn)機(jī),測試并記錄每組試件的抗剪切力;A2、B2組在光固化10到15分鐘進(jìn)行測試并記錄每組試件的抗剪切力,根據(jù)托槽的底板面積,分別計(jì)算出抗剪切強(qiáng)度。托槽脫落后記錄牙釉質(zhì)表面的粘接劑殘留指數(shù)。結(jié)果①A1、B1組,A1、A2組剪切強(qiáng)度差異有統(tǒng)計(jì)學(xué)意義,A2、B2組,B1、B2組抗剪切強(qiáng)度無統(tǒng)計(jì)學(xué)意義。②制備有通孔的托槽無論在1分鐘至2分鐘或是10至15分鐘的ARI分值均明顯低于傳統(tǒng)滑動(dòng)直絲弓托槽。這說明托槽制作通孔后可明顯增加粘結(jié)劑與托槽的粘接強(qiáng)度,與常規(guī)托槽相比其斷裂部位更多發(fā)生在粘結(jié)劑與釉質(zhì)界面。結(jié)論①托槽應(yīng)用GC粘接初期,托槽粘接強(qiáng)度明顯偏低,但底板帶有通孔的托槽粘接強(qiáng)度明顯提高。②僅在底板邊緣制備3個(gè)通孔的托槽在10至15分鐘粘接強(qiáng)度與常規(guī)托槽差異無統(tǒng)計(jì)學(xué)意義。尚不能完全滿足臨床需要,有必要在底板中心等部位制備更多通孔作進(jìn)一步研究。③托槽應(yīng)用GC粘接時(shí),粘固時(shí)間對粘接強(qiáng)度有較大影響。24小時(shí)完全固化后再進(jìn)行弓絲的結(jié)扎是有必要的。④對托槽脫落再次粘結(jié)后不需更換弓絲的患者,醫(yī)師多即時(shí)結(jié)扎,建議托槽脫落再次粘結(jié)時(shí)使用該帶有透光通孔的托槽。⑤B1、B2組的ARI積分明顯低于A1、A2組,這表明,在托槽底板上制備通孔后,托槽與粘接劑之間的結(jié)合力有明顯增強(qiáng)。提示臨床上托槽脫落后,托槽上粘接劑較少時(shí),采用底板帶有通孔的托槽可提高粘接效果。⑥打孔的位置和數(shù)目對光固化粘接劑的粘接效果有影響。通過在托槽上打孔增加透光性對增強(qiáng)光固化粘結(jié)劑早期的抗剪切強(qiáng)度是有意義的,為使粘結(jié)效果在早期達(dá)到臨床要求,有必要對打孔的位置(如托槽中心)及數(shù)量等作進(jìn)一步的研究,并運(yùn)用3D打印技術(shù)等制作統(tǒng)一標(biāo)準(zhǔn)化的試件進(jìn)行更加完善的體外實(shí)驗(yàn)和臨床效果觀察。為其推廣應(yīng)用提供可靠的理論依據(jù)。
[Abstract]:Objective to evaluate the effect of curing depth on light-cured bracket binders. In order to improve the transmittance of metal brackets and improve the early bonding strength of metal brackets, we designed a metal bracket with through holes on the bottom plate. Application of GC- (Resin-Enhanced Glass Ions) to Metal brackets with through holes on the floor of the floor the Shear strength and the bonding on the Surface of the Tooth immediately after the Light curing and 10 to 15 minutes after the brackets fall off The drug residue index was compared. To provide experimental basis and reference for the improvement and clinical application of the new bracket. Materials and methods Forty maxillary first premolars were selected and randomly divided into 4 groups, A _ (1) A _ (2) B _ (1) B _ (1) B _ (2) group. Each group of 10. A1A _ 2 group selected the maxillary first premolars sliding net bottom straight wire arch bracket B _ 1 and B _ 2 group brackets produced by Hangzhou Xingchen Sanbi Dental equipment Co., Ltd. The maxillary first anterior grinding made by Hangzhou Xingchen Sanbi Dental equipment Co., Ltd. Tooth sliding mesh bottom straight wire arch bracket, Three holes through the whole layer of the bottom plate were prepared by using the high speed turbine needle on the bottom plate of the bracket. All the brackets were bonded by GC- (Resin-Enhanced Glass Ion). Group A _ (1) B _ (1) was cured by light for 1 to 2 minutes, and the universal material mechanics test machine was used. The shear resistance of each group of specimens was measured and recorded. The shear strength of each group of specimens was measured and recorded during 10 to 15 minutes of light curing. The shear strength was calculated according to the floor area of the bracket. The residual index of adhesive on enamel surface was recorded after the bracket was removed. Results there was significant difference in shear strength between A _ 1 and A _ 1 A _ 2 group. The ARI score of the through hole bracket was significantly lower than that of the A _ 2B _ 2 group and B _ 1 / B _ 2 group, whether in 1 to 2 minutes or 10 to 15 minutes, no significant difference was found in the shear strength of A _ 2 / B _ 2 group and B _ 1 / B _ 2 group. Traditional sliding straight wire bow bracket. This indicates that the bonding strength between the binder and the bracket can be increased obviously after the through hole of the bracket is made, and the fracture position of the bracket is more often at the interface between the binder and the enamel than that of the conventional bracket. Conclusion (1) in the early stage of GC bonding, the bonding strength of bracket is obviously lower than that of GC. However, the bonding strength of the bracket with through holes on the bottom plate was significantly increased .2 there was no significant difference in the bonding strength between 10 and 15 minutes between the three through holes made at the edge of the bottom plate and the conventional bracket. It is necessary to make more holes in the center of the bottom plate and other parts for further study when applying GC bonding to the 3. 3 brackets. The bonding time has a great influence on the bonding strength. It is necessary to ligate the arch wire after 24 hours of complete solidification. It is necessary for the patients who do not need to change the bow wire after the bracket falls off and binds again. It is suggested that the ARI integral of the bracket with transparent through hole in group 5B1OB2 is obviously lower than that in group A _ 1A _ 2 when the bracket falls off and binds again, which indicates that after the through hole is prepared on the bottom plate of the bracket, the bonding force between the bracket and the adhesive is obviously enhanced. It is suggested that the position and number of holes in the bottom plate with through hole can improve the bonding effect of light curing adhesive when the clinical bracket falls off and the adhesive on the bracket is less. It is significant to enhance the early shear strength of the light curing binder by perforating holes in the bracket, in order to make the bonding effect reach the clinical requirement at the early stage. It is necessary to further study the location and number of holes (such as the center of the bracket), and to make standardized specimens with 3D printing technology for more perfect in vitro experiments and clinical observation. It provides a reliable theoretical basis for its popularization and application.
【學(xué)位授予單位】：山東大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：R783.5

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