Clinical and Radiological Outcomes of Two Implants with Different Prosthetic Interfaces and Neck Configurations: Randomized, Controlled, Split‐Mouth Clinical Trial

Abstract

Both implant designs investigated performed similarly in terms of failure rates, providing successful results up to 1 year after loading. The back-tapered neck configuration with conical connection and built-in platform shifting showed statistically lower marginal bone loss than straight neck configuration with flat-to-flat implant-abutment interface and external-hexagonal connection.

Clinical Evaluation of 762 Single-Tooth, Locking-Taper Implants: A Prospective Study with 1- to 12-Years of Follow-Up

“…These findings were confirmed in a recent randomized controlled split-mouth trial, where the use of implants with conical connection and a built-in platform resulted in less crestal bone loss and excellent bone stability over time compared to fixtures with a flat-to-flat external hexagonal connection with abutments of matching diameter [49].…”

Splinted and Nonsplinted Crowns with Different Implant Lengths in the Posterior Maxilla by Three-Dimensional Finite Element Analysis

“…This study assessed the effect of splinted crowns and implant length of Morse taper because this connection type exhibits better biomechanical behavior than other connections [17, 18], contributing to bone preservation [19, 20] and lower complications rates [21]. Furthermore, cemented crowns were simulated in this study because they exhibit better biomechanical behavior with Morse taper implants [16] and contribute to greater preservation of the bone tissue, compared with the screwed crown [22].…”

Can Periimplantitis Be Treated?

“…45 However, in the esthetic zone, it may be prudent to place the implant shoulder 0.5 to 1.0 mm subcrestal 47 so that a proper emergence profile can be achieved. Recent literature also found that subcrestal placement of the microgap 49,50 and the presence of a platform switch 51,52 aid in the preservation of the marginal bone level and, therefore, can be a useful feature in the anterior region where the implant can be placed slightly subcrestal. If the implant is placed too shallow, esthetic complications, such as poor contours of the restoration and visible metal margins, may ensue.…”