Overjet refers to the horizontal distance between the upper and lower front teeth when the jaws are closed — a typical orthodontic condition where the upper front teeth protrude significantly beyond the lower ones. While a small degree of overjet is expected in a balanced bite, an excessive overjet can cause functional problems, make the front teeth more vulnerable, hinder proper mastication, and even undermine self-confidence due to appearance-related anxiety.

The condition arises from multiple underlying influences. Hereditary factors are often key, meaning the natural positioning of the maxilla and 東京 前歯矯正 mandible can be passed down through families. Additional triggers involve persistent digit sucking, or pacifier use, which can reposition the maxillary arch while retracting the mandibular dentition. Chronic nasal obstruction can also disrupt normal jaw development. In some instances, missing lower teeth or an underdeveloped lower jaw may directly result in overjet.

The approach to treating overjet depends on the extent of misalignment and the developmental stage. In children and teenagers, proactive correction is optimal for long-term results. Traditional metal or ceramic braces and clear aligners are frequently prescribed to correct tooth positioning. When skeletal imbalance is involved, growth-modifying devices such as headgear or expansion devices may be utilized to stimulate forward growth of the lower jaw or slow maxillary protrusion.

In adult patients with skeletal overjet, orthodontics alone may be not enough to achieve optimal results. In such cases, orthognathic surgery may be essential to correct the skeletal base. This procedure is almost always combined with dental alignment therapy to ensure precise tooth positioning.

The length of treatment varies from case to case, depending on the treatment plan. Minor misalignment can often be resolved in 12 to 18 months, while surgical cases may require two years or more. Frequent orthodontist visits are critical to adjust appliances and prevent setbacks.

When overjet is noticeable in a patient, it is crucial to seek expert evaluation. An initial consultation, ideally before permanent teeth fully erupt, allows the orthodontist to identify developing problems and avoid complex future treatment. Correcting overjet improves more than looks — it also reduces risk of dental trauma by optimizing bite mechanics.

Practicing diligent cleaning during treatment is essential. Orthodontic devices can trap food and plaque, so consistent brushing and flossing, along with regular dental cleanings, are necessary to combat cavities and periodontal issues. Once appliances are removed, using retainers consistently is mandatory to prevent relapse.

Knowing the options for overjet correction empowers patients and families to make confident, informed decisions. With expert-guided care, most instances of protrusion can be effectively treated, resulting in improved function, increased ease of use, and sustained self-esteem.