The movement of teeth adjacent to dental implant restorations is a perplexing and complicated phenomenon that may relate to normal alveolar growth, functional occlusal loading or parafunctional occlusal activities, or it may have some multifactorial etiology. Although understanding the factors that may lead to adjacent tooth movement is important, the mere fact that it occurs is an essential consideration in treatment planning, restoration and maintenance protocols. Proximal contact opening through variable relative movement has far-reaching clinical consequences. In this issue of Prosthodontics Newsletter, we will review reports of both short- and long-term clinical outcomes to gain a better understanding of this phenomenon.

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