本文選題：正畸治療 + 牙根吸收　； 參考：《大連醫(yī)科大學》2014年碩士論文

【摘要】：目的：本文旨在通過對臨床病例的研究分析，探討與上頜前牙正畸性炎癥性牙根吸收（Orthodontically Induced Inflammatory Root Resorption，OIIRR）相關(guān)的部分可疑風險因素,并嘗試確定OIIRR吸收傾向的預測因素。 材料與方法：按照樣本選擇標準，選擇符合條件的病例127例，共762顆牙齒。其中，男：38例，女：89例，平均年齡：16.38歲，，平均矯治療程：19.75月。于患者矯治前后拍攝的曲面斷層片上分別描畫出上頜6顆前牙的輪廓，測量出牙冠和牙根的長度；另外測量出患者石膏模型上的牙冠長度，然后通過公式計算出每顆牙齒矯治后牙根吸收量。同時，根據(jù)患者病例資料記錄其矯治開始年齡、矯治療程、是否拔牙等信息。最后將所有數(shù)據(jù)輸入spss17.0統(tǒng)計軟件，應用t檢驗、方差分析、相關(guān)分析和多元回歸分析對其進行檢驗。 結(jié)果：矯治后上頜前牙牙根吸收量的最大值、最小值、均值分別為：中切牙3.99mm,-2.15mm，1.1898mm；側(cè)切牙：4.13mm,-1.71mm，1.4327mm；尖牙：3.45mm,-4.76mm，0.3487mm。t檢驗和單因素方差分析結(jié)果顯示：每顆牙齒矯治前后的牙根長度具有顯著性統(tǒng)計學差異（P＜0.01）。上頜前牙的牙根吸收量在矯治開始年齡各亞組內(nèi)有統(tǒng)計學差異；在是否拔牙各亞組內(nèi)有統(tǒng)計學差異；在是否應用種植體支抗各亞組內(nèi)有統(tǒng)計學差異；在矯治療程各亞組內(nèi)有統(tǒng)計學差異；在牙位各亞組內(nèi)有統(tǒng)計學差異；在垂直骨面型各亞組內(nèi)無統(tǒng)計學差異；在與下前牙的咬合接觸情況各亞組內(nèi)無統(tǒng)計學差異；上頜側(cè)切牙的牙根吸收量在是否存在斜行牽引各亞組內(nèi)有統(tǒng)計學差異；上頜切牙的牙根吸收量在是否存在根舌向轉(zhuǎn)矩各亞組內(nèi)有統(tǒng)計學差異；上頜尖牙的牙根吸收量在牙根發(fā)育是否完成各亞組內(nèi)有統(tǒng)計學差異。Pearson相關(guān)分析顯示：上頜前牙的牙根吸收量與矯治開始年齡、是否拔牙、是否應用種植體支抗還有矯治療程、與下前牙的咬合接觸情況具有很大相關(guān)性，與垂直骨面型、牙位不相關(guān)；上頜側(cè)切牙的牙根吸收量與是否存在斜行牽引具有很大相關(guān)性；上頜切牙的牙根吸收量與是否施加根舌向轉(zhuǎn)矩具有很大相關(guān)性；上頜尖牙牙根吸收量與牙根發(fā)育階段具有極大相關(guān)性；多元回歸分析結(jié)果顯示：牙根發(fā)育階段、矯治療程和是否應用種植體支抗可作為上頜前牙牙根吸收傾向的預測因素。 結(jié)論：1）上頜前牙的牙根吸收量與患者矯治開始年齡、是否拔牙、是否應用種植體支抗以及矯治療程、與下前牙的咬合接觸情況具有很大相關(guān)性； 2）上頜側(cè)切牙的牙根吸收量與是否存在斜行牽引具有很大相關(guān)性； 3）上頜切牙的牙根吸收量與是否施加根舌向轉(zhuǎn)矩具有很大相關(guān)性； 4）上頜尖牙牙根吸收量與牙根發(fā)育階段具有極大相關(guān)性； 5）牙根發(fā)育階段，矯治療程和是否應用種植體支抗可作為上頜前牙牙根吸收傾向的預測因素。
[Abstract]:Objective: to investigate some suspicious risk factors associated with orthodontic Induced Inflammatory Root resorption of the maxillary anterior teeth and to determine the predictive factors of OIIRR absorption tendency. Materials and methods: according to the criteria of sample selection, 127 cases (762 teeth) were selected. Among them, 38 were male and 89 were female, with an average age of 16.38 years. The average treatment course was 19.75 months. The contours of the maxillary anterior teeth were drawn on the curved surface slices taken before and after the treatment, and the lengths of the crowns and roots were measured, and the length of the crowns on the plaster models of the patients were also measured. Then the root resorption of each tooth was calculated by formula. At the same time, according to the data of patients, the age of treatment, the course of treatment and the extraction of teeth were recorded. Finally, all the data were input into the spss17.0 statistical software and tested by t-test, ANOVA, correlation analysis and multivariate regression analysis. Results: the maximum and minimum of root resorption of maxillary anterior teeth were obtained after orthodontic treatment. The mean values were 3.99mm-2.15mm / 1.1898mm for central incisor, 1.4327mm for lateral incisor, 3.45mm-4.76mm for molar and 0.3487mm.t test and analysis of variance for single factor showed that there was significant difference in root length of each tooth before and after orthodontic treatment (P < 0.01). The root resorption of maxillary anterior teeth was significantly different in each subgroup at the beginning age of orthodontic treatment, in each subgroup with or without extraction of teeth, in the subgroup with implant Anchorage, and in the subgroup with implant Anchorage. There were statistical differences in the subgroups of orthodontic treatment course, in the tooth position subgroups, in the vertical bone facial type subgroups, in the occlusal contact with the lower anterior teeth, there was no statistical difference among the subgroups. The root resorption of maxillary lateral incisor was significantly different in each subgroup of oblique traction, and the root resorption of maxillary incisor was significantly different in each subgroup of root tongue torque. The root resorption of maxillary canine teeth was significantly different in each subgroup. Pearson correlation analysis showed that the root resorption of maxillary anterior teeth was related to the beginning age of orthodontic treatment, whether the tooth was extracted, whether the implant Anchorage was used or not, and whether the orthodontic course was used. There was a great correlation between the occlusal contact and the occlusal contact of the lower anterior teeth, but not with the vertical bone face and the tooth position, and the root resorption of the maxillary lateral incisor was significantly correlated with the existence of oblique traction. The root resorption of maxillary incisors was significantly correlated with the application of root tongue torque, the root resorption of maxillary canine teeth was highly correlated with the root development stage, and the results of multiple regression analysis showed that, The course of orthodontic treatment and implant Anchorage can be used as predictors of root resorption tendency of maxillary anterior teeth. Conclusion (1) the root resorption of maxillary anterior teeth is closely related to the onset age of orthodontic treatment, the extraction of teeth, the application of implant Anchorage and the course of orthodontic treatment, which is closely related to the occlusal contact of the lower anterior teeth. 2) the root resorption of maxillary lateral incisors was significantly correlated with the presence of oblique traction. 3) the root resorption of maxillary incisors is closely related to the torque of root tongue. 4) the root resorption of maxillary canine teeth was significantly correlated with the development stage of maxillary canine teeth. 5) at the stage of root development, the treatment course and implant Anchorage can be used as predictors of root resorption tendency of maxillary anterior teeth.
【學位授予單位】：大連醫(yī)科大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：R783.5

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