本文關(guān)鍵詞：CBCT在上頜埋伏中切牙診治中的應(yīng)用研究　出處：《昆明醫(yī)科大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 錐形束CT(CBCT) 上頜埋伏中切 牙冠根成角 導(dǎo)萌

【摘要】：[目的]埋伏牙是臨床上較常見的一種錯(?)畸形,對患者口腔正常功能的發(fā)揮和美觀有著較大影響,可引起牙弓完整性的破壞、咬合關(guān)系紊亂、鄰牙牙根吸收等。牙弓中的任何牙都可能發(fā)生埋伏,由于種族、人種以及調(diào)查對象不同,埋伏牙的患病情況統(tǒng)計結(jié)果并不相同。對埋伏牙的精確定位是制定治療方案和選擇手術(shù)路徑的依據(jù)。錐形束CT三維重建可清楚顯示埋伏牙的位置及與周圍組織的結(jié)構(gòu)關(guān)系,本研究利用CBCT對埋伏牙患病情況資料進行全面收集整理,充分利用CBCT的優(yōu)勢,對埋伏中切牙的位置以及牙根的冠根成角情況進行統(tǒng)計分析,并對其影響療程長短的因素作出分析,以便能更好地為臨床應(yīng)用提供理論基礎(chǔ)和科學(xué)指導(dǎo)。[材料與方法]第一部分：在我院正畸科2012年10月份至2014年10月份就診的6348例患者中,以確診的574例埋伏牙患者為研究對象,對其性別、年齡、部位和數(shù)量等基本情況進行調(diào)查研究。第二部分：以193例患者,212顆上頜埋伏中切牙為研究對象,將其CBCT影像轉(zhuǎn)化為DICOM格式,對其位置進行測量和冠根成角的統(tǒng)計分析。第三部分：以25例上頜埋伏中切牙成功導(dǎo)萌的患者為研究對象。分析導(dǎo)萌療程,上頜埋中切牙切緣至(?)平面的距離(d),上頜埋伏中切牙傾斜角度(α),上頜埋伏中切牙的垂直高度,上頜埋伏中切牙冠根成角度數(shù)(β)及年齡(Y)。[結(jié)果l埋伏牙在口腔正畸患者中的患病率為9.04%,以上頜好發(fā),上頜尖牙患病率最高,且女性多于男性。上頜埋伏中切牙44.04%為倒置埋伏阻生,50.47%為唇側(cè)埋伏,16.98%為腭側(cè)埋伏,29.24%為近中埋伏,26.89%為遠中埋伏,切緣至(?)平面的平均距離為7.5mm。上頜埋伏中切牙引起鄰牙牙根吸收發(fā)生率為12.60%。上頜埋伏中切牙的導(dǎo)萌療程與患者年齡及d成正相關(guān)；冠根成角度數(shù)越小,畸形程度越嚴重,越難牽引；與a成負相關(guān)。[結(jié)論]在正畸門診患者中,埋伏牙的患病率較高,尤其是上頜尖牙,提示正畸醫(yī)生在患者就診時要注意埋伏牙的早期診斷及治療。上頜埋伏中切牙位置變化較大,倒置埋伏發(fā)生率較高,造成鄰牙牙根吸收的發(fā)生率也較高,應(yīng)引起正畸醫(yī)生的重視。上頜埋伏中切牙的位置和患者的年齡可為預(yù)測導(dǎo)萌療程提供重要依據(jù)。
[Abstract]:[Objective] the embedded tooth is a common malformation in clinic, which has great influence on the normal function and aesthetic appearance of the oral cavity, which can cause the integrity of the dental arch, the disorder of occlusal relations, and the absorption of the adjacent teeth. Any tooth in the dental arch may be ambushed. The prevalence of ambushed teeth is not the same because of race, ethnicity, and different subjects. The accurate location of the ambush is the basis for formulating the treatment plan and selecting the surgical path. Cone beam CT reconstruction can clearly show the location and the relationship with the surrounding tissue structure of impacted teeth, this study uses CBCT of impacted teeth prevalence data were collected comprehensively, make full use of the advantages of CBCT, statistical analysis of the incisor in the ambush position and root crown angulation situation and its influence on the the duration of factors analysis, in order to provide theoretical basis and scientific guidance for clinical application. [materials and methods] the first part: in our hospital orthodontic department from October 2012 to October 2014, 574 cases of patients with impacted teeth were selected as the research objects, and their gender, age, location and quantity were investigated. The first part was 6348 cases. The second part: Taking 193 patients and 212 impacted maxillary central incisors as subjects, the CBCT images were transformed into DICOM format, and the location of Wacom was analyzed by statistical analysis. The third part: with 25 cases of maxillary impacted incisors, the patients were successfully guided. The distance from the incisor to the plane of the maxillary central incisor, the inclination angle of the maxillary central incisor, the vertical height of the maxillary central incisor, the angle of the central incisor and the age (Y) of the maxillary central incisor were analyzed. [results the prevalence rate of L ambushed teeth in orthodontic patients was 9.04%, upper jaw and maxillary canines were the highest, and women were more than men. 44.04% of the maxillary embedded central incisors were inverted impacted, 50.47% were labial ambush, 16.98% were palatal ambush, 29.24% were proximal mesopore, 26.89% were distal distal, and the average distance from the incisal edge to the plane was 7.5mm. The incidence of root absorption of adjacent teeth caused by incisor in the maxillary ambush was 12.60%. The course of guided eruption of the maxillary embedded central incisor is positively related to the age of patients and D. The smaller the crown angle, the more serious the degree of deformity is, the more difficult it is to draw. It has a negative correlation with a. [Conclusion] in orthodontic outpatients, the prevalence of impacted teeth is high, especially for maxillary canines. It is suggested that orthodontic doctors should pay attention to early diagnosis and treatment of dental impacted teeth when visiting patients. The position of incisor changes in the maxillary ambush, and the incidence of inverted ambush is high, and the incidence of root absorption is high, which should be paid attention by the orthodontic doctors. The position of the incisors in the maxillary ambush and the age of the patients can provide an important basis for predicting the course of guidance.
【學(xué)位授予單位】：昆明醫(yī)科大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：R783.5

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相關(guān)期刊論文 前1條

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本文編號：1341787