Selected References*

1. Volpe AR, Emling RC, Yankell SL: The Toothbrush ‑ A New Dimension in
                Design, Engineering and Evaluation. J Clin Dent 3:C29‑C33, 1992.

2. Yankell SL, Emling RC, Shi X:  Efficacy of Sonicare Plus and Braun Oral-B Ultra. 
                J Clin Dent  8: 26- 29, 1997.

3.  Yankell SL, Shi X, Emling RC, Harris M: Reach Tooth & Gum Care and
                Three Additional Manual Toothbrushes. J Clin Dent 9: 1-4, 1998. 

4. Yankell SL, Shi X, Emling RC, Blatz B, Biesbrock AR: Two Battery-powered  
                Toothbrushes. J Clin Dent 13:187-190, 2002.

5. Yankell SL, Shi X, Emling RC, Kang HC: Dr. Sedoc and ADA Toothbrushes.  
                J Clin Dent 15: 33-36, 2004.

6. Emling RC, Nelson B, Yankell SL, Shi X: Five Dentifrices. IADR Abs # 2042,
                2006.

7. Yankell SL, Shi X, Emling RC, Spirgel CM, Scheier PA: Development of the
                Evolve Toothbrush. J Clin Dent 18: 91-94, 2007.

8. Yankell SL, Shi X, Emling RC: Elmex Sensitive Soft, Extra Soft and ADA
                Toothbrushes. J Clin Dent 18: 25-28, 2007.

9. Emling RC, Yankell SL, Shi X: Sensodyne Mikro Aktiv Extra Soft Toothbrush. 
                 J Clin Dent 19: 55-58, 2008.

10.  Patel VM, Huy G, Shi X, Yankell SL, Charig AJ: Design-Efficacy of Electric
                Toothbrush Heads. AADR Abs. # 1009, 2008.

11.  Barnes CM, Covey DA, Shi X, Yankell SL: A Bi-Level, Extremely Tapered
                Bristles Toothbrush. Am J Dent 22: 84-86, 2009.

12. Stiller SS, Bosma ML, Shi X, Spirgel CM, Yankell SL: Manual Toothbrushes
                with Extended, X- Angled, Flat Multitufted Bristles. 
                Int J Dent Hyg 8: 244-248, 2010.

13. Kemp JH, Barnes CM, Spirgel CM, Shi X, Yankell SL: An Engineered
                Powered Toothbrush. J Clin Dent 23: 17-20, 2012.

14. Yankell SL, Shi X, Spirgel CM, Kalbfeld R: Dental Floss Products.
                AADR Abs #575, 2014. 

15. Yankell SL, Shi X, Spirgel CM, Spillmann N:  Nine Toothbrush Products.
                IADR Abs # 3068, 2015.

*abridged titles.