The term "牙松了" in English can be translated as "loose tooth". This refers to a tooth that is not securely attached to the surrounding gums and bone. It can be caused by various factors such as gum disease, dental trauma, or natural aging process. When a tooth becomes loose, it may cause discomfort, difficulty in chewing, and potential dental problems. If you experience a loose tooth, it is important to visit a dental professional for appropriate evaluation and treatment.

The English term for "牙松了" is "mobile tooth". A mobile tooth refers to a tooth that has lost its firmness or stability and is prone to movement. This condition can occur due to periodontal disease, tooth decay, or trauma to the tooth or surrounding structures. It is crucial to address a mobile tooth promptly as it may lead to further dental complications, such as tooth loss or misalignment. A dental examination and appropriate treatment options can help stabilize the tooth and prevent additional problems.

The phrase "牙松了" can be translated as "tooth looseness" in English. Tooth looseness refers to a situation where a tooth is not securely held in its natural position within the dental arch. This can be caused by the weakening of the tooth's supporting structures, such as the periodontal ligament or the alveolar bone. Common causes of tooth looseness include gum disease, trauma, or excessive biting forces. Dental intervention is necessary to address tooth looseness, as it can lead to further dental complications if left untreated.

In English, "牙松了" can be described as "tooth mobility". Tooth mobility is a condition where a tooth has increased movement or instability within its socket. This can occur due to factors such as gum disease, bone loss, or weakening of the supporting structures around the tooth. Tooth mobility can lead to difficulty in chewing, pain, and further dental problems if not addressed promptly. Seeking dental care is essential to determine the underlying cause of tooth mobility and provide appropriate treatment to stabilize the tooth.