數(shù)字化光纖透照法判斷齲洞深度
發(fā)布時間：2018-09-05 17:16
【摘要】：目的:使用DIAGNOcam系統(tǒng)體外研究新型數(shù)字化光纖透照法(digital imaging fiber optic transillumination,DIFOTI)判斷齲洞深度的準確性。方法:實驗采用自身配對設(shè)計,選取74顆有1個鄰面齲、邊緣嵴均未破壞的離體磨牙(66顆)和前磨牙(8顆),在齲洞所對應(yīng)的鉭面邊緣嵴中央做標(biāo)記點,將離體牙固定在標(biāo)準牙列模型內(nèi),齲洞與另一離體牙的無齲壞牙面相鄰接,用黏蠟封閉至釉牙骨質(zhì)界(cemento-enamel junction,CEJ)上2 mm及鄰間隙(模仿牙齦緣及齦乳頭),然后將標(biāo)準牙列模型放入仿頭模內(nèi),使用DIAGNOcam系統(tǒng)對離體牙進行探照檢查,通過系統(tǒng)的探頭從鉭面拍攝獲取投射照片。使用DIAGNOcam系統(tǒng)軟件測量工具,在投射照片上,從標(biāo)記點起至齲損最深處長度記為a,延長a至對側(cè)邊緣嵴處的長度記為b,b為光纖透照攝取圖像中牙的寬度,然后在離體牙鉭面上得到自標(biāo)記點至對側(cè)邊緣嵴與光纖透照圖中b平行的線為患牙的實際寬度,其長度記為c。投射照片上光纖透照所測得的齲壞深度為d,通過公式d/a=c/b(數(shù)字化光纖測得的齲壞深度/圖像中齲損深度=實際牙寬度/圖像中牙寬度),推導(dǎo)得出d=a×c/b,計算出d值。取出離體牙,去凈腐質(zhì),測量實際洞深,記為D,每個樣本d與D的差值記錄為Δd。結(jié)果用SPSS 20.0軟件進行一致性檢驗,并用Med Calc 14.8.1.0軟件對Δd進行Bland-Altman分析。結(jié)果:d與D的相關(guān)系數(shù)(intraclass correlation coefficient,ICC)為0.951(ICC75%),P=0.263,兩組數(shù)據(jù)差異無統(tǒng)計學(xué)意義,具有良好的一致性,且兩組數(shù)據(jù)之間存在y=0.23+0.91x函數(shù)關(guān)系(x為數(shù)字化光纖透照法測得齲洞深度,y為實際齲洞深度)。Bland-Altman分析Δd顯示,Δd的均值Δd_(mean)為0.05 mm,標(biāo)準差Δd_(SD)=0.308,95%置信區(qū)間為(-0.55~0.65),這種相差幅度在臨床上可以接受,因此可以認為兩種測量方式的一致性較好。結(jié)論:使用DIAGNOcam系統(tǒng)體外檢測牙齒齲壞深度與齲洞去腐后的實際深度基本一致,提示臨床上可以使用DIAGNOcam系統(tǒng)來輔助評估齲洞深度。
[Abstract]:Objective: to study the accuracy of a new digital optical fiber radiography (digital imaging fiber optic transillumination,DIFOTI) system for the determination of caries depth by DIAGNOcam system in vitro. Methods: the self-matched design was used to select 74 extracted molars (66 teeth) and 8 premolars (8 premolars) with 1 adjacent caries and undamaged marginal caries, which were used as marking points in the center of the marginal ridge of tantalum surface corresponding to the caries cavity. The isolated teeth were fixed in the standard dentition model, and the cavities were adjacent to the decayed surfaces of the other teeth. Two mm and adjacent space (imitating gingival margin and gingival papilla) of enamel cementum boundary (cemento-enamel junction,CEJ) were sealed with sticky wax, then standard dentition model was put into the imitating head mold, and the isolated teeth were examined by DIAGNOcam system. The projective photos are obtained from tantalum surface by the system probe. Using the DIAGNOcam system software measurement tool, the length from the marking point to the deepest point of caries was recorded as a, and the length from a to the contralateral edge ridge was recorded as the width of the tooth in the image taken by optical fiber radiography. Then, the actual width of the affected teeth was obtained from the point of self-labeling to the line parallel to b in the optical fiber radiography, and the length of the line was recorded as c. The decayed depth measured by optical fiber radiography on the projection photo is d, and the d value is calculated by the formula d/a=c/b (the depth of caries measured by digital optical fiber / the depth of caries in the image = the width of the actual tooth / the width of the tooth in the image). The extracted teeth were removed and the actual hole depth was measured. The difference between d and D of each sample was recorded as 螖 D. Results SPSS 20.0 software was used to verify the consistency, and Med Calc 14.8.1.0 software was used to analyze 螖 d by Bland-Altman. Results the correlation coefficient (intraclass correlation coefficient,ICC) between the two groups was 0.951 (ICC75%) 0.263. There was no significant difference between the two groups, and there was good consistency between the two groups. Bland-Altman analysis 螖 d shows that the mean 螖 d _ (mean) of 螖 d is 0.05 mm, standard deviation 螖 D _ (SD) 0.308% confidence interval is (-0.550.65). Clinically acceptable, Therefore, it can be considered that the consistency of the two methods of measurement is good. Conclusion: the detection of dental caries depth by DIAGNOcam system in vitro is basically consistent with the actual depth after caries cavity decayed, suggesting that DIAGNOcam system can be used to evaluate the dental caries depth in clinic.
【作者單位】： 北京大學(xué)口腔醫(yī)學(xué)院·口腔醫(yī)院牙體牙髓科口腔數(shù)字化醫(yī)療技術(shù)和材料國家工程實驗室口腔數(shù)字醫(yī)學(xué)北京市重點實驗室;
【分類號】：R781.1
本文編號：2224917
[Abstract]:Objective: to study the accuracy of a new digital optical fiber radiography (digital imaging fiber optic transillumination,DIFOTI) system for the determination of caries depth by DIAGNOcam system in vitro. Methods: the self-matched design was used to select 74 extracted molars (66 teeth) and 8 premolars (8 premolars) with 1 adjacent caries and undamaged marginal caries, which were used as marking points in the center of the marginal ridge of tantalum surface corresponding to the caries cavity. The isolated teeth were fixed in the standard dentition model, and the cavities were adjacent to the decayed surfaces of the other teeth. Two mm and adjacent space (imitating gingival margin and gingival papilla) of enamel cementum boundary (cemento-enamel junction,CEJ) were sealed with sticky wax, then standard dentition model was put into the imitating head mold, and the isolated teeth were examined by DIAGNOcam system. The projective photos are obtained from tantalum surface by the system probe. Using the DIAGNOcam system software measurement tool, the length from the marking point to the deepest point of caries was recorded as a, and the length from a to the contralateral edge ridge was recorded as the width of the tooth in the image taken by optical fiber radiography. Then, the actual width of the affected teeth was obtained from the point of self-labeling to the line parallel to b in the optical fiber radiography, and the length of the line was recorded as c. The decayed depth measured by optical fiber radiography on the projection photo is d, and the d value is calculated by the formula d/a=c/b (the depth of caries measured by digital optical fiber / the depth of caries in the image = the width of the actual tooth / the width of the tooth in the image). The extracted teeth were removed and the actual hole depth was measured. The difference between d and D of each sample was recorded as 螖 D. Results SPSS 20.0 software was used to verify the consistency, and Med Calc 14.8.1.0 software was used to analyze 螖 d by Bland-Altman. Results the correlation coefficient (intraclass correlation coefficient,ICC) between the two groups was 0.951 (ICC75%) 0.263. There was no significant difference between the two groups, and there was good consistency between the two groups. Bland-Altman analysis 螖 d shows that the mean 螖 d _ (mean) of 螖 d is 0.05 mm, standard deviation 螖 D _ (SD) 0.308% confidence interval is (-0.550.65). Clinically acceptable, Therefore, it can be considered that the consistency of the two methods of measurement is good. Conclusion: the detection of dental caries depth by DIAGNOcam system in vitro is basically consistent with the actual depth after caries cavity decayed, suggesting that DIAGNOcam system can be used to evaluate the dental caries depth in clinic.
【作者單位】： 北京大學(xué)口腔醫(yī)學(xué)院·口腔醫(yī)院牙體牙髓科口腔數(shù)字化醫(yī)療技術(shù)和材料國家工程實驗室口腔數(shù)字醫(yī)學(xué)北京市重點實驗室;
【分類號】：R781.1
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1 陳君,岳林;對光纖透照法診斷后牙鄰面齲的評價[J];現(xiàn)代口腔醫(yī)學(xué)雜志;1998年03期
2 ;[J];;年期
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