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Abstract: Objectives: The study was done to evaluate the efficacy of optical coherence tomography (OCT), to detect and analyze the microdamage occurring around the microimplant immediately following its placement, and to compare the findings with micro-computed tomography (μCT) images of the samples to validate the result of the present study. Methods: microimplants were inserted into bovine bone samples. Images of the samples were obtained using OCT and μCT. Visual comparisons of the images were made to evaluate whether anatomical details and microdamage induced by microimplant insertion were accurately revealed by OCT. Results: The surface of the cortical bone with its anatomical variations is visualized on the OCT images. Microdamage occurring on the surface of the cortical bone around the microimplant can be appreciated in OCT images. The resulting OCT images were compared with the μCT images. A high correlation regarding the visualization of individual microcracks was observed. The depth penetration of OCT is limited when compared to μCT. Conclusions: OCT in the present study was able to generate high-resolution images of the microdamage occurring around the microimplant. Image quality at the surface of the cortical bone is above par when compared with μCT imaging, because of the inherent high contrast and high-resolution quality of OCT systems. Improvements in the imaging depth and development of intraoral sensors are vital for developing a real-time imaging system and integrating the system into orthodontic practice.

使用光学相干成像技术对皮质骨植入微种植体产生微创的评估

[1]Bakhsh TA, Sadr A, Shimada Y, et al., 2013. Concurrent evaluation of composite internal adaptation and bond strength in a class-I cavity. J Dent, 41(1):60-70.

[2]Bredbenner TL, Haug RH, 2000. Substitutes for human cadaveric bone in maxillofacial rigid fixation research. Oral Surg Oral Med Oral Pathol Oral Radiol Endod, 90(5):574-580.

[3]Carrasco-Zevallos OM, Keller B, Viehland C, et al., 2016. Live volumetric (4D) visualization and guidance of in vivo human ophthalmic surgery with intraoperative optical coherence tomography. Sci Rep, 6:31689.

[4]Choi KS, Wijesinghe RE, Lee C, et al., 2017. In vivo observation of metamorphosis of Plodia interpunctella Hübner using three-dimensional optical coherence tomography. Entomol Res, 47(4):256-262.

[5]Fercher AF, Mengedoht K, Werner W, 1988. Eye-length measurement by interferometry with partially coherent light. Opt Lett, 13(3):186-188.

[6]Fernandes DJ, Elias CN, de Oliveira Ruellas AC, 2015. Influence of screw length and bone thickness on the stability of temporary implants. Materials, 8(9):6558-6569.

[7]Hsu JT, Chen YJ, Ho JT, et al., 2014. A comparison of micro-CT and dental CT in assessing cortical bone morphology and trabecular bone microarchitecture. PLoS ONE, 9(9):e107545.

[8]Huang D, Swanson EA, Lin CP, et al., 1991. Optical coherence tomography. Science, 254(5035):1178-1181.

[9]Katsumata A, Hirukawa A, Okumura S, et al., 2007. Effects of image artifacts on gray-value density in limited-volume cone-beam computerized tomography. Oral Surg Oral Med Oral Pathol Oral Radiol Endod, 104(6):829-836.

[10]Koprowski R, Machoy M, Woźniak K, et al., 2014. Automatic method of analysis of OCT images in the assessment of the tooth enamel surface after orthodontic treatment with fixed braces. Biomed Eng Online, 13:48.

[11]Lee NK, Baek SH, 2010. Effects of the diameter and shape of orthodontic mini-implants on microdamage to the cortical bone. Am J Orthod Dentofacial Orthop, 138(1):8.e1-8.e8.

[12]Melsen B, Costa A, 2000. Immediate loading of implants used for orthodontic anchorage. Clin Orthod Res, 3(1):23-28.

[13]Motoyoshi M, Inaba M, Ono A, et al., 2009. The effect of cortical bone thickness on the stability of orthodontic mini-implants and on the stress distribution in surrounding bone. Int J Oral Maxillofac Surg, 38(1):13-18.

[14]Nackaerts O, Maes F, Yan H, et al., 2011. Analysis of intensity variability in multislice and cone beam computed tomography. Clin Oral Implants Res, 22(8):873-879.

[15]Nguyen MV, Codrington J, Fletcher L, et al., 2017. Influence of cortical bone thickness on miniscrew microcrack formation. Am J Orthod Dentofacial Orthop, 152(3):301-311.

[16]Park HS, Jeong SH, Kwon OW, 2006. Factors affecting the clinical success of screw implants used as orthodontic anchorage. Am J Orthod Dentofacial Orthop, 130(1):18-25.

[17]Park JY, Chung JH, Lee JS, et al., 2017. Comparisons of the diagnostic accuracies of optical coherence tomography, micro-computed tomography, and histology in periodontal disease: an ex vivo study. J Periodontal Implant Sci, 47(1):30-40.

[18]Pithon MM, de Jesus Santos M, de Souza CA, et al., 2015. Effectiveness of fluoride sealant in the prevention of carious lesions around orthodontic brackets: an OCT evaluation. Dental Press J Orthod, 20(6):37-42.

[19]Ravichandran NK, Wijesinghe RE, Shirazi MF, et al., 2016a. Depth enhancement in spectral domain optical coherence tomography using bidirectional imaging modality with a single spectrometer. J Biomed Opt, 21(7):076005.

[20]Ravichandran NK, Wijesinghe RE, Shirazi MF, et al., 2016b. In vivo monitoring on growth and spread of gray leaf spot disease in capsicum annuum leaf using spectral domain optical coherence tomography. J Spectrosc, 2016:1093734.

[21]Ravichandran NK, Wijesinghe RE, Lee SY, et al., 2017. Non-destructive analysis of the internal anatomical structures of mosquito specimens using optical coherence tomography. Sensors (Basel), 17(8):1897.

[22]Seeliger J, Machoy M, Koprowski R, et al., 2017. Enamel thickness before and after orthodontic treatment analysed in optical coherence tomography. Biomed Res Int, 2017: 8390575.

[23]Shank SB, Beck FM, D'Atri AM, et al., 2012. Bone damage associated with orthodontic placement of miniscrew implants in an animal model. Am J Orthod Dentofacial Orthop, 141(4):412-418.

[24]Shirazi MF, Park K, Wijesinghe RE, et al., 2016. Fast industrial inspection of optical thin film using optical coherence tomography. Sensors (Basel), 16(10):1598.

[25]Shirazi MF, Wijesinghe RE, Ravichandran NK, et al., 2017. Dual-path handheld system for cornea and retina imaging using optical coherence tomography. Opt Rev, 24(2):219-225.

[26]Wawrzinek C, Sommer T, Fischer-Brandies H, 2008. Microdamage in cortical bone due to the overtightening of orthodontic microscrews. J Orofac Orthop, 69(2):121-134.

[27]Wijesinghe RE, Cho NH, Park K, et al., 2016. Bio-photonic detection and quantitative evaluation method for the progression of dental caries using optical frequency-domain imaging method. Sensors (Basel), 16(12):2076.

[28]Wijesinghe RE, Lee SY, Kim P, et al., 2017. Optical sensing method to analyze germination rate of Capsicum annum seeds treated with growth-promoting chemical compounds using optical coherence tomography. J Biomed Opt, 22(9):091502.

[29]Wilmes B, Rademacher C, Olthoff G, et al., 2006. Parameters affecting primary stability of orthodontic mini-implants. J Orofac Orthop, 67(3):162-174.

[30]Woodall N, Tadepalli SC, Qian F, et al., 2011. Effect of miniscrew angulation on anchorage resistance. Am J Orthod Dentofacial Orthop, 139(2):e147-e152.

[31]Yadav S, Upadhyay M, Liu S, et al., 2012. Microdamage of the cortical bone during mini-implant insertion with self-drilling and self-tapping techniques: a randomized controlled trial. Am J Orthod Dentofacial Orthop, 141(5):538-546.

[32]Zhang Q, Lee CS, Chao J, et al., 2016. Wide-field optical coherence tomography based microangiography for retinal imaging. Sci Rep, 6:22017.