D. Richards

Considerations for anterior implant esthetics.

R. Kao, G. Conte, P. Rhodes, 2002, Journal - California Dental Association.

Increased interleukin-1 beta in the crevicular fluid of diseased implants.

D. Curtis, R. Kao, D. Richards, 1995, The International journal of oral & maxillofacial implants.

Strategic extraction: comparison of traditional and implant therapies.

R. Kao, D. Richards, 2008, Journal of the California Dental Association.