Mathematical Analysis of Duplicating upper Anterior Tooth Morphology by CAD Mirror-image.

doi:10.13701/j.cnki.kqyxyj.2016.05.025

Abstract

Abstract: Objective: To assess the mathematical match virtual prostheses reconstructed by the modes of mirror-image (MI),biogenericreconstruction (BR), and wax-ups (WU) on the original upper anterior tooth morphology. Methods: Twenty intact upper anterior teethwere included. Preparations of all ceramic crowns were performed on the gypsum model and scannedbefore and afterpreparations. The virtual prostheses were formed by the MI, BR, and WU as well as the original teeth (CEREC^ software v4.0). Discrepancies were evaluated by matching the scans with the original morphologies using the parameters of three-dimensional distance (3-DD) and rate of volume change(RVC)(Geomagic Qualifyv7.0, USA). Datawere analyzed by one-way ANOVA and rank sum test. Results: 3-DD differences of MI and BR were significantly less than those of WU (P<0.05), but there was nosignificant difference between MI and BR. There were significant differences in RVC between MI and BR as well as WU (P<0.05), but no significant differences were found between BR and WU. Conclusion: The MI model enables a closer reconstruction of upper anterior teeth than BR and WU.

CLC Number:

R783.2

LI Rui-ying, YAO Jiang-wu.. Mathematical Analysis of Duplicating upper Anterior Tooth Morphology by CAD Mirror-image.[J]. Journal of Oral Science Research, 2016, 32(5): 524-526.

References

[1] Kollmuss M, Jakob FM, Kirchner HG, et al. Comparison of biogenerically reconstructed and waxed-up complete occlusal surfaces with respect to the original tooth morphology [J]. Clin Oral Investig, 2013, 17(3)∶851-857
[2] Mehl A, Blanz V. New procedure for fully automatic occlusal surface reconstruction by means of a biogeneric tooth model [J]. The Journal of Prosthetic Dentistry, 2006, 95(4)∶400
[3] Probst F, Litzenburger AP, Richter MJ, et al. Similarity measure for quality control of dental CAD/CAM-applications [J]. ComputBiol Med, 2012, 42(11)∶1086-1090
[4] Litzenburger AP, Hickel R, Richter MJ, et al. Fully automatic CAD design of the occlusal morphology of partial crowns compared to dental technicians' design [J]. Clin Oral Investig, 2013, 17(2)∶491-496
[5] Schaefer O, Decker M, Wittstock F, et al. Impact of digital impression techniques on the adaption of ceramic partial crowns in vitro [J]. J Dent, 2014, 42(6)∶677-683
[6] Probst FA, Mehl A. CAD reconstruction using contralateral mirrored anterior teeth: a 3-dimensional metric and visual evaluation [J]. Int J Prosthodont, 2007, 21(6)∶521-523
[7] Stober T, HeuschmidN, ZellwegerG, et al. Comparability of clinical wear measurements by optical 3D laser scanning in two different centers [J] . Dent Mater,2014, 30(5)∶499-506
[8] Eder M, Klppel M, Müller D, et al. 3-D analysis of breast morphology changes after inverted T-scar and vertical-scar reduction mammaplasty over 12 months [J]. JPRAS, 2013, 66(6)∶776-786
[9] DeLong R. Intra-oral restorative materials wear: rethinking the current approaches: how to measure wear [J]. Dent Mater, 2006, 22(8)∶702-711
[10] Eder M, Schneider A, Feussner H, et al. Breast volume assessment based on 3D surface geometry: verification of the method using MR imaging] [J]. BME, 2008, 53(3)∶112-121
[11] 孙力,郭亚娟,赵妍,等.根据CT扫描数据及印模三维重建牙列数字模型精度的初步研究[J].口腔颌面修复学杂志, 2011, 12(1)∶6-9
[12] Schaefer O, Decker M, WittstockF, et al. Impact of digital impression techniques on the adaption of ceramic partial crowns in vitro [J]. J Dent, 2014, 42(6)∶677-683
[13] Vadavadagi SV, Hombesh M, Choudhury GK, et al. Variation in Size and Form between Left and Right Maxillary Central Incisor Teeth [J]. JIOH, 2015, 7(2)∶33-39

[1]	DU Bao-xia, WANG Xiao-rong, YIN Guo-xiang, YANG Gang, ZHANG Wei. Application of 3D Printing Technology in Immediate Prosthetic Restoration of Anterior Maxillary Defect [J]. Journal of Oral Science Research, 2018, 34(1): 56-59.
[2]	WU Fan, CAO Liang, JIANG Xiao-nan, ZHAO A-li, ZHANG Guo-qing, WANG Li-min, WANG Wei-guo. Biomechanical Analysis of Endocrown of Mandibular First Molar with Different Proximal Heights [J]. Journal of Oral Science Research, 2018, 34(1): 65-68.
[3]	JIANG Jian-hui,FAN Jian,ZOU Geng-sen,CHEN Jiang,DAI Lin-lin.. Fatigue Analysis of Taper Lock Abutment in Platform Switching Implant by Three-dimensional Finite Element. [J]. Journal of Oral Science Research, 2017, 33(8): 841-844.
[4]	CAO Shuai-shuai, ZHOU Miao, MIRANDA Pedro, CHE Yue-juan, CHEN Xiao-ming, LI Shu-yi, GENG Yuan-ming, YANG Xiao-bin. 1.. Biological Evaluation of Three-dimensional Printed β-TCP Scaffold for Jaw Reconstruction. [J]. Journal of Oral Science Research, 2017, 33(7): 712-716.
[5]	XIAO Dan, YAO Yuan, HUANG Feng, LIU Ying-lu, HE Jian-hui. Influence of Four Kinds of Post-cores on Color of Lava All Ceramic System. [J]. Journal of Oral Science Research, 2017, 33(7): 774-776.
[6]	PAN Jing-guang, ZHAO Yin, LIU Yan-zheng, ZHANG Min.. Effects of cyclic hydrostatic pressure on proliferation and ultrastructure of rat’s BMSCs. [J]. Journal of Oral Science Research, 2017, 33(6): 593-596.
[7]	GE Shu-peng, HAN Xiang-zhen, ZHOU Qi-qi, SONG Yan-yan, HE Hui-yu. Study on ENPP1 Gene SNP Rs6925433 Polymorphism among Uyghur Nationality in Kashgar. [J]. Journal of Oral Science Research, 2017, 33(6): 633-636.
[8]	LUO Shan-feng.. Effects of Ultra-thin Veneers on Anterior Teeth Deformity. [J]. Journal of Oral Science Research, 2017, 33(5): 563-566.
[9]	XU Liang-wei, CHENG Kang-jie, PENG Wei, YAO Chun-yan .. Accuracy of A Commonly-used Surgical Template. [J]. Journal of Oral Science Research, 2017, 33(4): 382-385.
[10]	SONG Dan-dan,FANG Hui-min,CAO Yang,YU Qing. Influence of Er:YAG Laser Treatment on Enamel Surface and Shear Bond Strength of Resin. [J]. Journal of Oral Science Research, 2017, 33(1): 38-41.
[11]	LI Jin-hong, JIN Dong-mei, WANG Su. Efficacy of Er:YAG Laser Treatments of Root Canal Walls on the Pull-out Bond Strength of Fiber Posts [J]. Journal of Oral Science Research, 2017, 33(1): 102-105.
[12]	GE Yi-Chen, JIANG Shao-Kang, LI Qing-Ru, ZHU Zhuo-Li.. Three-dimensional Finite Element Analysis of Stress Distribution under Different Bone Conditions in All-on-4 Therapy [J]. Journal of Oral Science Research, 2016, 32(12): 1252-1256.
[13]	YAN Jia-qun, ZHU Yan, WANG Tai-he, SU Hong.. Effect of Cements on Stress Distribution of All Ceramic Crowns at Central Incisors. [J]. Journal of Oral Science Research, 2016, 32(12): 1296-1298.
[14]	YU Hao, ZHANG Dong, CHENG Shao-long, CHENG Hui. Prediction the Color of Tooth: A Method Based on Linear Regression [J]. Journal of Oral Science Research, 2016, 32(11): 1156-1159.
[15]	HAN Xiang-zhen, ZHOU Qi-qi, HU Yang, SONG Yan-yan, HE Hui-yu.. Observation of GFP-labeled 3D-printed Jaw using Laser Confocal Microscopy in Vivo. [J]. Journal of Oral Science Research, 2016, 32(10): 1020-1023.