Which type of teeth most frequently lose their sealants?

The most frequently losing sealants are the second molars. This is primarily due to their location and the function they serve in the mouth. Second molars, positioned at the back of the mouth, are essential for grinding food and are also more difficult to clean effectively. This makes them more susceptible to plaque accumulation and decay, which can lead to the degradation of sealants over time.

Moreover, the chewing forces exerted on the second molars can contribute to the wear and tear of the sealant material. The placement technique and the condition of the tooth's surface can also impact how well the sealant adheres, and in cases where there are grooves and fissures, which are common in molars, sealant retention may vary. Thus, due to these anatomical and functional factors, second molars are more prone to sealant loss compared to other types of teeth.