The Integrated Abutment Crown™, a Screwless and Cementless Restoration for Single-Tooth Implants: A Report on a New Technique


  • Rainier A. Urdaneta DMD,

    1. Clinical Instructor, Harvard School of Dental Medicine, Restorative Dentistry and Biomaterial Sciences and Concord Dental Associates, Faulkner Hospital, Implant Centre, Boston, MA.
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  • Mauro Marincola DDS, MSD

    1. University of Cartagena, Implant Dentistry Centre, Cartagena, Colombia; Private Practice, Rome, Italy.
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  • This work was presented at the 82nd General exhibition of the International, American, and Canadian Association of Dental Research, Honolulu, HI. March 13, 2004; 19th Annual Meeting of Academy of Osseointegration, San Francisco, CA. March 19, 2004; 53rd Annual meeting of the American Academy of Implant Dentistry, New York, NY. November 3, 2004.

Correspondence to: Dr. Rainier A. Urdaneta, Implant Dentistry Centre, 501 Arborway, Jamaica Plain, MA 02130. E-mail:


A technique is presented for the restoration of single-tooth, implant-supported crowns where the abutment and the crown material are chemomechanically bonded; therefore, there is no need for cement, and the implant and implant-abutment are connected with a screwless locking-taper. The clinical and laboratory procedures involved in the fabrication and insertion of the restoration are described in detail. This restoration offers the restorative dentist some advantages: excellent marginal adaptation with a cementless interface, a bacterially sealed implant-abutment connection, a crown material with a similar wear rate and hardness values of human enamel, a simple laboratory technique, and a reduced number of prosthetic components. Due to the light-cured nature of the crown material, chairside modifications can be accomplished. The major drawbacks are: studies are necessary to assess the long-term performance of the Integrated Abutment Crown™ (IAC)'s in both anterior and posterior areas of the mouth. Resin materials have higher roughness values, accumulate plaque at a higher rate, and are more likely to stain than tooth structure and all-ceramic restorations.