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

Abstract

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.

Probability of survival of implant-supported metal ceramic and CAD/CAM resin nanoceramic crowns

“…In addition, cementation of both systems was made with a resin cement and retrievability DENTAL-2566; No. of Pages 10 d e n t a l m a t e r i a l s x x x ( 2 0 1 5 ) xxx.e1-xxx.e10 xxx.e9 is still possible considering that it is accomplished by removal of both crown and abutment from implant, rather than the crown from the abutment [52,53].…”

Reliability Testing of Indirect Composites as Single Implant Restorations

“…The clinical application of indirect composite systems directly bonded to Ti alloy abutments has been described as an alternative technique for restoring single‐unit implants, known as the Integrated Abutment Crown™ (IAC™). In essence, the implant abutment and the crown material are one unit (no cement or screw is used), to be locking‐taper connected (without a screw) to the implant well 19 . Besides the acceptable esthetic appearance of recently developed composites, a potential advantage is the possibility of direct repair, should chipping occur 19 .…”

A Screwless and Cementless Technique for the Restoration of Single‐tooth Implants: A Retrospective Cohort Study

“…20 The Integrated Abutment Crown TM (IAC) (Bicon, LLC.) is an implant restoration where the implant abutment and the crown material are one unit 21 (Fig 1). A light-cured, highly filled composite resin material, such as Diamond Crown TM (DRM Research Laboratories, Branford, CT), is chemo-mechanically bonded in the laboratory to the coronal part of a titanium alloy abutment.…”