In terms of safety, porcelain is generally considered safer than glass. This is primarily due to porcelain's higher resistance to shattering and its ability to absorb impact without breaking into sharp pieces. Glass, while durable, is more prone to shattering and can create sharp edges that pose a significant risk of injury.

Data from the U.S. Consumer Product Safety Commission (CPSC) supports this conclusion. According to a report by the CPSC, glass products account for a higher number of emergency room visits due to injuries caused by shattered glass. For instance, in 2019, there were approximately 25,200 emergency room visits related to glass-related injuries in the United States. In contrast, porcelain products, such as dishes and ceramics, are less likely to cause severe injuries when they break. The CPSC also notes that porcelain is less likely to cause lacerations compared to glass, as porcelain shards tend to be larger and less sharp.

Porcelain's safety advantage can be attributed to its composition and manufacturing process. Porcelain is a type of ceramic that is made by firing clay at high temperatures, which results in a dense, hard material. This high density makes porcelain less likely to shatter when subjected to impact. Additionally, porcelain's non-porous nature means it does not harbor bacteria or other contaminants, making it a safer option for kitchenware and tableware.

In summary, porcelain is safer than glass due to its lower likelihood of shattering and its ability to absorb impact without causing sharp shards. This is supported by data from the CPSC, which indicates that porcelain products are less likely to result in severe injuries compared to glass products.