本文選題：乳上切牙　切入點(diǎn)：根管　出處：《廣西醫(yī)科大學(xué)》2017年碩士論文　論文類(lèi)型：學(xué)位論文

【摘要】：目的:采用顯微CT掃描并三維重建乳上切牙根管形態(tài),為乳牙可吸收樁的研制提供參考。方法:收集乳上中切牙和乳上側(cè)切牙各10顆,采用顯微CT三維重建并描述乳上切牙根管系統(tǒng)的二維及三維解剖形態(tài)。結(jié)果:乳上中切牙的體積,表面積較乳上側(cè)切牙的大,而結(jié)構(gòu)模型指數(shù)則相反。乳上側(cè)切牙在根頸截面、根頸1/3段和根中1/3段交界面較乳上中切牙圓。乳上中切牙各橫截面的唇腭向直徑較近遠(yuǎn)中向直徑小,乳上側(cè)切牙各截面的唇腭向直徑較近遠(yuǎn)中向直徑大。乳上中切牙和乳上側(cè)切牙的根管錐度在唇腭向從根尖1/3到根頸1/3逐漸變大,而乳上中切牙的根管錐度在近遠(yuǎn)中向從根尖1/3到根頸1/3逐漸變小。乳上側(cè)切牙唇腭向的三段根管錐度的差異具有統(tǒng)計(jì)學(xué)意義。結(jié)論:顯微CT掃描作為無(wú)創(chuàng)性的牙體解剖系統(tǒng)的研究方法,能重建乳上切牙根管形態(tài)。為乳上切牙可吸收樁的研發(fā)提供數(shù)據(jù)參考。
[Abstract]:Objective: to study the root canal morphology of upper deciduous incisor by microCT scanning and 3D reconstruction. Methods: 10 upper incisors and 10 upper incisors were collected. The three-dimensional reconstruction of upper primary incisor was used to describe the 2D and 3D anatomical morphology of the upper incisor. Results: the volume and surface area of upper incisor were larger than those of superior incisor, but the index of structural model was opposite. The interface between the 1/3 segment of the root neck and the 1/3 segment of the root was round than that of the upper incisor. The lip and palate diameters of each cross section of the upper incisor were smaller than that of the proximal distal incisor. The labial and palatal diameters of each section of upper primary incisors were larger than those of proximal and distal incisors. The root canal taper of upper incisors and upper incisors gradually increased from 1/3 to 1/3 in the labial and palatine directions. The taper of the root canal of the upper incisor gradually decreased from the apical 1/3 to the root neck 1/3. The difference of the three segments of the upper incisor labial and palatine is statistically significant. Conclusion: the microCT scan is a noninvasive tooth. Research methods of somatic anatomic system, It can reconstruct the shape of root canal of upper incisor and provide data reference for the research and development of absorbable post of upper incisor.
【學(xué)位授予單位】：廣西醫(yī)科大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：R788.1

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本文編號(hào)：1562606