發(fā)布時(shí)間：2018-11-03 16:37

【摘要】：目的 通過體外樁道模型觀察四種臨床常見印模方法對(duì)硅橡膠樁道印模質(zhì)量的影響，研究結(jié)果為臨床印模方法的選擇提供可靠依據(jù)，提高臨床印模質(zhì)量，完善修復(fù)體制作及相關(guān)臨床治療，同時(shí)為改進(jìn)硅橡膠注射槍設(shè)計(jì)提供實(shí)驗(yàn)參考。 方法 制作體外樁道模型，模擬人體口腔溫度、不同根管數(shù)目的條件。采用硅橡膠專用槍注射法（A組）、硅橡膠專用槍配合機(jī)動(dòng)螺旋輸送器導(dǎo)入注射法（B組）、硅橡膠專用槍配合手動(dòng)螺旋輸送器導(dǎo)入注射法（C組）、根管樁道內(nèi)注射法（D組）共四種方法制取硅橡膠樁道印模，，按每種方法各取30個(gè)單根管樁道印模和30個(gè)雙根管樁道印模,共240個(gè)。觀察樁道印模是否有缺損以及樁道印模表面氣泡數(shù)量、大小及分布位置；并用游標(biāo)卡尺測(cè)量印模缺損、氣泡的直徑，同時(shí)拍照后輸入計(jì)算機(jī)，通過Vixwin Pro軟件矯正測(cè)量值，計(jì)算出印模缺損的面積和印模表面氣泡面積，根據(jù)印模缺損和氣泡總面積的大小評(píng)定四級(jí)標(biāo)準(zhǔn)：優(yōu)秀、良好、合格和不合格。使用SPSS13.0統(tǒng)計(jì)軟件進(jìn)行數(shù)據(jù)分析：1）單根管樁道印模與雙根管樁道印模成功率比較采用非參數(shù)檢驗(yàn)—Kruskal-Wallis H檢驗(yàn)；2）四種樁道印模方法成功率比較采用非參數(shù)檢驗(yàn)—Kruskal-Wallis H檢驗(yàn)；四組之間存在差別則進(jìn)行四個(gè)獨(dú)立樣本兩兩比較的Nemenyi法檢驗(yàn)；3）四種樁道印模方法制取不同根管數(shù)目樁道印模成功率的比較采用非參數(shù)檢驗(yàn)—Kruskal-Wallis H檢驗(yàn)；4）四種樁道印模方法樁核產(chǎn)生氣泡的數(shù)目、大小及分布的比較采用非參數(shù)檢驗(yàn)—Kruskal-Wallis H檢驗(yàn)。P0.05時(shí)認(rèn)為差異有統(tǒng)計(jì)學(xué)意義。 結(jié)果 1.單根管樁道印模成功率明顯高于雙根管組（P0.05）。 2.四種樁道印模方法對(duì)樁道印模成功率有影響，且D組方法明顯優(yōu)于A、B、C三組（P0.05）；D組與A組、D組與B組、D組與C組間有顯著性差異（P0.05），C組與A組、B組與A組間存在顯著性差異（P0.05），C組與B組間無統(tǒng)計(jì)學(xué)差異（P0.05）。 3.四種硅橡膠樁道印模方法對(duì)印模表面產(chǎn)生氣泡的數(shù)量有顯著影響，其中根管樁道內(nèi)注射法產(chǎn)生的氣泡最少（P0.05）；四種樁道印模方法出現(xiàn)的氣泡主要位于樁道印模根尖1/3（P0.05）；四種硅橡膠樁道印模方法對(duì)印模表面產(chǎn)生氣泡的大小無影響（P0.05）。 結(jié)論 1.不同方法制取硅橡膠樁道印模時(shí)，單根管樁道印模成功率明顯高于雙根管樁道印模。 2.根管樁道內(nèi)注射法用于硅橡膠樁道印模時(shí)成功率最高；其次為硅橡膠專用槍配合螺旋輸送器導(dǎo)入注射法；單獨(dú)采用硅橡膠專用槍注射法效果最差。 3.硅橡膠專用槍配合機(jī)動(dòng)螺旋輸送器導(dǎo)入注射法與配合手動(dòng)螺旋輸送器導(dǎo)入注射法效果無顯著性差異。 4.四種硅橡膠樁道印模方法對(duì)印模表面產(chǎn)生的氣泡數(shù)量有顯著影響，其中根管樁道內(nèi)注射法產(chǎn)生的氣泡最少。 5.四種樁道印模方法出現(xiàn)的氣泡主要位于樁道印模根尖1/3。 6.四種硅橡膠樁道印模方法對(duì)印模表面產(chǎn)生的氣泡大小無影響。
[Abstract]:Purpose The influence of four kinds of clinical common impression methods on the quality of the impression of silicone rubber piles was observed by means of external pile-channel model. The research results provide a reliable basis for the selection of clinical impression method, improve the quality of clinical impression, perfect the repair system and relevant clinical practice. Treatment, at the same time providing an experiment to improve the design of silicone rubber injection gun REFERENCES The method comprises the following steps of: manufacturing an in-vitro pile channel model, simulating the oral temperature of the human body, Conditions for the number of the same root tubes. The silicone rubber special gun injection method (group A), the silicone rubber special gun and the motorized screw conveyor are introduced into the injection method (group B), and the silicone rubber special gun is matched with the manual screw conveyor guide. Four methods of injection molding (group C), injection method (group D) in root canal and injection method (group D) were used to prepare the impression of silicon rubber pile, and 30 single pipe piles and 30 double pipe piles were taken in each method. A total of 240 impressions were obtained. Observe whether the impression of the pile is defective and the number, size and distribution of air bubbles on the surface of the stamp surface; measure the diameter of the impression defect and air bubble with a vernier caliper, and then input the computer after taking pictures, and enter the computer through Vixwin Pr o software corrects the measured value, calculates the area of the impression defect and the surface bubble area of the stamp, and evaluates the fourth grade according to the size of the total area of the impression defect and the air bubble: excellent, good, Good, qualified and unqualified. SPSS 13.0 statistical software was used for data analysis: 1) The success ratio of single pipe pile track stamp and double-root canal stamp was tested by non-test method (Kruskal-Wallis H test; 2) The success rate of four-channel impression method was compared with the non-test method, Kruskal-W. allis h test; differences between the four groups were tested by the Nemenyi method comparing the two comparisons of four independent samples; 3) the comparison of the success ratio of the number of piles with different root canals was tested by four methods of pile-channel impression, using Kruskal-Wallis H test; and 4) four kinds of pile-channel impression method piles. The comparison of the number, size, and distribution of bubbles in the core adopts the non-exponential test method, Kruskal-W. allis h test. p0.05 was considered Discrepancy Statistical significance. Results 1. Success rate of single pipe pile test There were significant differences between group D and group A, group D and group B, group D and group C. There was significant difference between group C and group A, group B and group A (P0.05). There was no statistical difference between group B and group B (P0.05). It is mainly located in 1/ 3 (P0.05) of the root tip of the pile. die table There was no influence on the size of bubble generation (P0.05). Conclusion 1. The silicone rubber pile was prepared by different methods. The success rate of single pipe pile is obviously higher than that of double-root canal. import injection method for screw conveyer; single use silicon rubber special gun injection method effect worst. 3. silicone rubber special gun cooperate with mobile snail There is no significant difference between the introduction injection method of the rotary conveyor and the introduction of the manual screw conveyor. There is a significant effect on the number of bubbles generated on the surface of the impression, in which the root canal is produced by injection molding The bubble of the raw air is fewest. 5. The air bubbles appearing in the four kinds of pile-channel impression methods are mainly located in
【學(xué)位授予單位】：暨南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：R783.3

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