: The direction of shrinkage is actually determined more by the bonding between the composite and the tooth and the shape of the cavity rather than the position of the light.
: Shrinkage creates complex stress fields. Paradoxically, some "incremental" filling techniques (placing material in layers) can actually increase tooth deformation compared to a single "bulk" fill.
If you are looking to download the paper, you are likely searching for the seminal study titled "Do Dental Composites Always Shrink Toward the Light?" by Antheunis Versluis, Daranee Tantbirojn, and William H. Douglas. Published in the Journal of Dental Research , this paper is a cornerstone in dental materials science, specifically regarding how composite resins behave during curing. Where to Find the PDF
: A digital copy of the Versluis et al. 1998 article is often available for viewing or download with a subscription.
Because this is a copyrighted academic article, direct free downloads are often restricted to institutional access. You can find the full text through the following platforms: