What are common contraindications for sealant application?

The presence of dental caries or inadequate tooth eruption is a crucial contraindication for sealant application because sealants are intended to prevent cavities rather than treat already existing ones. If a tooth has active decay, applying a sealant would not only be ineffective but could also trap bacteria, leading to further deterioration of the tooth structure. Additionally, inadequate tooth eruption means that a tooth is not fully emerged in the oral cavity, making it difficult to apply a sealant effectively, as the sealant needs to adhere properly to a clean, dry surface. In cases where the tooth cannot be adequately treated with a sealant due to these conditions, other dental interventions are necessary to address the issues before considering sealant application.