Dear patient and parents, we will start calling patients to schedule appointments on Monday May 18.


Welcome To Liu Orthodontics!




Beautiful , Confident Smile

Dr. Sean Liu, DDS, MS, PhD, MSD

Dr. Sean Liu, DDS, MS, PhD, MSD

Diplomate, American Board of Orthodontists

Welcome to our practice! I am very blessed to work in the profession I love. A beautiful smile can truly build confidence and make life better. That is what I enjoy to do every single day.

Education and professional background

My passion in orthodontics has driven me to receiving many years of education and pursing professional development.  Being born and raised in Taiwan, I attended Taipei Medical University, where I earned my DDS and Master's degree of Orthodontics in 1999 and 2003. I received my PhD degree from Baylor College of Dentistry, Dallas, Texas in 2008. Shortly before graduation, I was appointed as Assistant Professor of Orthodontics in the Indiana University School of Dentistry. Meanwhile, I completed my second Master's degree in Dentistry and Orthodontic certificate from the Indiana University School of Dentistry.  Later in 2015, I was promoted to tenured Associated Professor and became a certified orthodontist by American Board of Orthodontists.

I love practicing, researching, and teaching orthodontics. I published more than 40 scientific papers in American Journal of Orthodontics and Dentofacial Orthopedics, European Journal of Orthodontics, Angle orthodontists, and Bone.  I am also a coauthor of “Basic and Applied Bone Biology”.  In 2010, I was honored the Beni Solow Award because my article was selected the best paper of European Journal of Orthodontics. After serving as Director of Orthodontic Fellowship Program for 3 years, my enthusiasm of teaching was well recognized and honored the Outstanding Faculty Award in 2013

Outside the office

  • Outside my professional life, I am also a loving husband and father of 2 boys. We love to travel and explore the outdoors. We enjoy clamming, camping, and exploring different state parks. My older son, Ryan, plays soccer all year round. If you run into us on the soccer fields of Washington Cup come say Hi! My little boy, Jaylen, loves art. We love doing craft projects together at school festival nights.

Professional Honor and Awards

Resident’s Choice- Outstanding Orthodontic Faculty Award

Indiana University School of Dentistry 2013

Beni Solow Award

European Orthodontic Society 2011

Albert P. Westfall Memorial Teaching Fellowship Award

American Association of Orthodontists 2010

Orthodontic Faculty Development Award American

Association of Orthodontists Foundation 2010

Faculty First Award

American Association of Orthodontists 2009

Outstanding Research Award

Congress of Taiwan Association of Orthodontics 2003

Best Graduate Resident

Taipei Medical University 2003


Book Chapter

Chu T-M G, Liu SS, Babler W (2013). Chapter 11 Craniofacial biology, biomaterials orthodontics, and implants. In Burr D and Allen MR (Ed.), Basic and Applied Bone Biology (page: 225-242). St. Louis, MO: Elsevier,


Liu, Y., Tang, Y., Xiao, L., Liu, S.S., Yu, H (2014) .Suture cartilage formation pattern varies with different expansive forces. Am J Orthod Dentofacial Orthop, Volume 146, Issue 4, October 2014, Pages 442-450.

Li, S., Xia, Y., Liu, S.S., Eckert, G., & Chen, J. (2014). Three-dimensional canine displacement patterns in response to translation and controlled Tipping Retraction Strategies. Angle Orthod, Angle Orthod. 2015 Jan; 85(1): 18–25.

Romanyk, D.L., Liu, S.S., Long, R., & Carey, J.P. (2014). Considerations for determining relaxationconstants from creep modeling. Int J Mech. Volume 85, August 2014, Pages 179-186

Brown, R.N., Sexton, B. E. Chu, T.-M. G, Katona, T. R., Stewart, K.T., Kyung, H.-M., & Liu, S.S. (2014).Comparison of stainless steel and titanium alloy orthodontic miniscrew implants: A mechanicaland histologic analysis. Am J Orthod Dentofacial Orthop, 145(4):496-504.

Liu, Y., Xu, L., Zhu, H., & Liu, S. S.-Y. (2014). Technical procedures for template-guided surgery for mandibular reconstruction based on digital design and manufacturing. BioMedical Engineering OnLine2014, 13:63

Xia, Z., Chen, J., Jiang, F. Li, S. Viecilli, R., & Liu, S.S. (2013). Load system of segmental T-loops forcanine retraction. Am J Orthod Dentofacial Orthop,144(4):548-56.

Liu, S.S., Xu, H., Sun, J., Kontogiorgos, E., Whittington, P.R., Misner, K. G. Kyung, H.-M., Buschang, P.H., & Opperman, L.A. (2013). Recombinant human bone morphogenetic protein-2 stimulates bone formation during inter-frontal suture expansion in rabbits. Am J Orthod Dentofacial Orthop, 44(2):210-217.

Romanyk, D.L., Liu, S.S., Lipsett, M. G., Toogood, R.W., Lagravere, M.O., Major, P.W., & Carey, J.P.R. (2013). Towards a viscoelastic model for the unfused midpalatal suture: development and validation using the midsagittal suture in New Zealand White Rabbits. Journal of Biomechanics, 46(10):1618-1625.

Liu, S.S., Cruz, E., Sun, J., Stewart, K.T., & Allen, M. R. (2013). Orthodontic mini-implant diameter does not affect in situ linear microcrack generation in the mandible or maxilla. Am J Orthod Dentofacial Orthop, 142(6):768-773.

Hansen, V., Liu, S.S., Schrader, S.M., Dean, J.A., & Stewart, K.T (2013). Personality as a predictor of willingness to undergo various orthodontic treatments. Angle Orthod, 83(5):899-905.

Xu, H., Ke, K., Zhang, Z., Luo, X., Jin. X, Liu, S.S., & Fan, Z. (2013). Effects of platelet-rich plasma and recombinant human bone morphogenetic protein-2 on suture distraction osteogenesis. Journal of Craniofacial Surgery, 24(2):645-50.

Liu, Y., Zhou, G., & Liu S.S. (2013). Review on biomechanical simulation, measurement and control of orthodontic force. Advanced Materials Research, 647: 623-629.

Liu, Y. Ru, N., Chen, J., Liu S.S., Peng, W. (2013). Finite Element Modeling for Orthodontic Biomechanical Simulation Based on Reverse Engineering: A Case Study. Research Journal of Applied Sciences, Engineering and Technology 6(17): 3267-3276.

Mittal, N., Xia, Z., Chen, J., Stewart. K.T., & Liu S.S. (2013).Three-dimensional quantification of pretorqued nickel-titanium wires in edgewise and prescription brackets. Angle Orthod, 83(3):484-490.

Liu, Y., Song, F., Sun, J., Yu, H., & Liu. S.S. (2012). Suture compression induced bone resorption with intensified MMP‐1 and 13 expressions. Bone. 51(4):695-703

Ru, N., Liu, S.S., Li, Z., Li, S., & Bai, Y. (2012). In vivo microcomputed tomography evaluation of rat alveolar bone and root resorption during orthodontic tooth movement. Angel Orthod, 83(3):402-409.

Smith, T., Ghoneima A., Stewart K., Liu, S. Eckert G., Halum S.; & Kula K. (2012). Three-dimensional computed tomography analysis of airway volume changes following rapid maxillary expansion. Am J Orthod Dentofacial Orthop. 141(5):618-626.

Smith, B., Stewart, K. Liu, S.S.,* Eckert, G., & Kula, K. (2012). Prediction of orthodontic treatment of surgically exposed unilateral maxillary impacted canine cases. Angle Orthod, 82(4):723-731.

Larrabee, T.M., Liu, S.S.,* Torres-Gorena. A., Soto-Rojas, A., Eckert, G.J., & Stewart, K.T. (2012) The effects of varying alcohol concentrations commonly found in mouth rinses on the force decay of elastomeric chain. Angle Orthod, (5):894-899.

Yadav, S., Upadhyay, M., Liu, S., Roberts, E., Neace, W.P., & Nanda, R. (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.

Liu, S. S., & Buschang, P. H. (2011). How does tooth eruption relate to vertical mandibular growth displacement? Am J Orthod Dentofacial Orthop, 139(6):745-751.

Liu, S. S., Opperman, L. A., Kyung, H. M., & Buschang, P. H. (2011). Is there an optimal force level for sutural expansion? Am J Orthod Dentofacial Orthop, 139(4):446-455.

Liu, S. S. Kyung, H. M., & Buschang, P. H. (2010). Continuous forces are more effective than

intermittent forces in expanding sutures. Eur J Orthod, 32(4):371-380.

Liu, S. S. Opperman, L. A., & Buschang, P. H. (2009). Editor's Summary and Q&A Effects of

recombinant human bone morphogenetic protein-2 on midsagittal sutural bone formation during expansion. Am J Orthod Dentofacial Orthop, 136(6): 768.e1-768.e8.

Liu, S. S. Opperman, L. A., & Buschang, P. H. (2009). Effects of recombinant human bone

morphogenetic protein-2 on midsagittal sutural bone formation during expansion. Am J Orthod

Dentofacial Orthop, 136(6):768.e1-768.e8.

Buschang, P. H., Carrillo, R., Liu, S. S. & Demirjian, A. (2008). Maxillary and mandibular

dentoalveolar heights of French-Canadians 10 to 15 years of age. Angle Orthod, 78(1):70-76.

Liu, S. (2003). GH/IGF axis in bone formation during orthodontic treatment: Literature Review and possibility in the future. J Taiwan Assoc Orthod, 5(1):23-26.

Liu, S., Su, B., Chang, C.Y., & Tsai, C.Y. (2004). Serum changes of the growth hormone/insulin-like growth factor axis during initial orthodontic treatment. Chin Dent, 23(2): 114-123.

118 SW 330th St #200, Federal Way, WA 98023

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FAX:(253)838 - 3416

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