Name: accuracy in dental medicine, a new way to measure trueness and precision
Uploaded: 2014-04-29T13:00:00
Description: Watch this Scientific Journal Video about Accuracy in Dental Medicine, A New Way to Measure Trueness and Precision at JoVE.com

作者感谢牙科技师尼古拉Lanfranconi为他们与改善扫描软件的持续支持生产主参考模型和Alicona公司。

1，试样制备/基地<ol><li>适用围绕标本平底。将试样在扫描表。定向的牙合面的水平面（ 图1）。 </li></ol> 2，软件分析<ol><li>启动该程序，然后在实验室测量模块（ 图2） </li><li>放置标本的扫描表的中心位置。 </li><li>选择正确的倍率镜头。对于大的对象，如满弓的扫描，使用5倍的目标。 </li><li>通过使用三维鼠标，直到试样的表面被显示在实时取景窗?...

<ol>
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E., Sailer, I., Studer, S. P., Ender, A., H&#228;mmerle, C. H. 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Mater. 19 (1), 19-24 (2003).</li><li>Mehl, A., Ender, A., M&#246;rmann, W., Attin, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Accuracy+testing+of+a+new+intraoral+3D+camera.">Accuracy testing of a new intraoral 3D camera.</a> International Journal of Computerized Dentistry. 12 (1), 11-28 (2009).</li><li>Fickl, S., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Dimensional+changes+of+the+ridge+contour+after+socket+preservation+and+buccal+overbuilding:+an+animal+study.">Dimensional changes of the ridge contour after socket preservation and buccal overbuilding: an animal study.</a> J. Clin. Periodontol. 36 (5), 442-448 (2009).</li><li>Vlaar, S. T., vander Zel, J. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Accuracy+of+dental+digitizers.">Accuracy of dental digitizers.</a> Int. Dent. J. 56 (5), 301-309 (2006).</li><li>Ender, A., Mehl, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Accuracy+of+complete-arch+dental+impressions:+a+new+method+of+measuring+trueness+and+precision.">Accuracy of complete-arch dental impressions: a new method of measuring trueness and precision.</a> 109 (2), 121-128 (2013).</li><li>Ender, A., Mehl, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Influence+of+scanning+strategies+on+the+accuracy+of+digital+intraoral+scanning+systems.">Influence of scanning strategies on the accuracy of digital intraoral scanning systems.</a> Int. J. Comput. 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精度是在牙科医学的一个基本要求。参考扫描器能够扫描小型和大型物体的高正确度与精密度的。用最佳的扫描方法中，即使个别形态详细牙齿表面可以被扫描以高的分辨率和可重复性。随着扫描仪的不同放大倍数下，宏观和微观形态结构可以被收购。它可以扫描各种模型材料。 参考扫描仪的精度评估包括不同型号的取向和相同的模型方位揭示扫描和软件滤波算法12?...

精度是在口腔医学领域的许多的重大利益。更换牙体硬组织需要一个确切的装配假肢，以确保适当的功能，防止进一步破坏剩余的牙体组织1,2。固定义齿和全假体是精确拟合在像备牙或种植体3支撑结构尤为重要。这就是为什么一个高度精确的再现是必要的，尤其是在牙齿印模和牙科实验室的工作流的领域。然而，牙科治疗等领域也受益于一个真实和精确测量的结果，以确认治疗成功和评估新的治疗策略， 如软，硬组织填充，侵蚀和磨损监控，牙周治疗和正畸治疗4,5。在许多领域，目前的验证过程是直线距离的测量用游标卡尺或显微镜6,7。这些甲基ODS仅限于几个测量点和测试区域的三维（3D）的变化的信息有限。较新的测量方法包括在测试对象8,9的整个表面上的光或放射线捕捉。这里，在整个表面或体积的测定和显示在计算机屏幕上的3D对象。线性测量是可能的，以及模型从不同的扫描时间叠印。与此叠加，在每一个扫描点的表面变化的评估是可能的。这使得能够监控特定区域或所有三个坐标轴显示变形的可能性。另外，体积的变化可以测量10。限制点与这些新的方法是在扫描仪的精确度，用于捕获被检测物。没有参考扫描器的精度范围内的变化可分为测试对象或扫描误差的变化。扫描精度通常是由马努给出的值造商来自扫描小，校准对象11。扫描大型物体像一个牙弓时，这个最小的扫描误差是不同的。精度是由正确度和精确度。真实性是被扫描物体的从它的实际几何形状的偏差。精度是重复扫描（ISO 5725-1）之间的偏差。在这项研究中，一种新的光学参考扫描器的基础上，重点变异扫描技术，介绍了从单一的牙齿标本扫描到全拱模型精度最高。此参考扫描器被用作一些研究基地，从常规和数字技术12-14和对有关牙科咬合和牙科材料的磨损实际项目比较牙齿印模的精度。本研究的目的是为了提供参考扫描器的精度和基本信息的一些可能性，在牙科领域的研究使用该设备。

<table border="0" cellpadding="0" cellspacing="0" width="669">
	<tbody>
		<tr>
			<td>Reference model</td>
			<td></td>
			<td></td>
			<td>individual non-precious metal model, derived from a patient impression</td>
		</tr>
		<tr>
			<td>Araldit repair</td>
			<td>Huntsmen Advanced Material, Basel, Switzerland</td>
			<td></td>
			<td>used for making the base of the reference model</td>
		</tr>
		<tr>
			<td>CamBase</td>
			<td>Dentona, Dortmund, Germany</td>
			<td></td>
			<td>Type IV dental ston for pouring conventional impressions</td>
		</tr>
		<tr>
			<td>Identium</td>
			<td>Kettenbach, Eschenburg, Germany</td>
			<td></td>
			<td>Vinylsiloxanether impression material for conventional impression</td>
		</tr>
		<tr>
			<td>inEOS model holder</td>
			<td>Sirona Dental Systems, Bensheim, Germany</td>
			<td></td>
			<td>used for fixing stone models at the reference scanner</td>
		</tr>
		<tr>
			<td>Accutrans</td>
			<td>Coltene Whaledent, Altst&#228;tten, Switzerland</td>
			<td></td>
			<td>used for making the base of thestone models</td>
		</tr>
		<tr>
			<td>President putty</td>
			<td>Coltene Whaledent, Altst&#228;tten, Switzerland</td>
			<td></td>
			<td>mix with accutrans for betterstability of the base</td>
		</tr>
		<tr>
			<td>Alicona Infinite Focus</td>
			<td>Alicona Imaging, Graz, Austria</td>
			<td></td>
			<td>Reference scanner&#160;</td>
		</tr>
	</tbody>
</table>

accuracy in dental medicine, a new way to measure trueness and precision

参考扫描仪是用于牙科医学验证了很多程序。其主要兴趣是验证方法的印象，因为他们作为牙齿修复基地。许多参考扫描仪目前的限制是缺乏准确的扫描大型物体，如全牙弓，或在有限的可能性，以评估具体的牙齿表面。一种新的参考扫描器的基础上，重点变异扫描技术，是与问候最高的局部和全身的准确性进行评估。一个具体的扫描协议进行了测试，从牙齿印模扫描原始牙齿表面。此外，不同型号的材料进行了核实。结果表明：该参考扫描器的高扫描精度为5.3±1.1微米为正确度的平均偏差和1.6±0.6微米的精密在箱子满拱扫描。目前的牙齿印模的方法表现出更高的偏差（正确度：20.4±2.2微米，精度：12.5±2.5微米）笔韩参考扫描器内部扫描精度。像单齿面较小的对象可以与一个更高的精度进行扫描，使系统能够评估腐蚀性和磨蚀牙齿表面的损失。参考扫描器可用于测量差异进行了大量的牙科研究领域。在不同的放大倍数水平结合了高的局部和全身的精度，可用于评估的单齿或修复体达到充分拱的变化的变化。

图16A示出了石膏样品的扫描。为了验证最佳的扫描参数，控制重复性的材料。试样的部分进行扫描具有不同的对比度和亮度设置，在每次扫描后的可重复性进行检查以找到最佳的扫描设置。金属表面显示出与对比低1.0和石膏或树脂材料具有更高的对比度达到最佳效果。 图16B示出了测试的扫描之后没有最佳的扫描参数的可重复性。的倾斜尖表面显示出低的可重复性。 <stron...

Watch this Scientific Journal Video about Accuracy in Dental Medicine, A New Way to Measure Trueness and Precision at JoVE.com

Accuracy in Dental Medicine, A New Way to Measure Trueness and Precision

精度是口腔医学的一大需求。要验证的准确性，需要参考的扫描仪。本文提出了一种新的参考扫描仪获取各种各样的牙齿形态与高正确度与精密度的调整扫描方法。

精度在牙科医学，一种新的方法来测量正确度与精密度

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