Lower frontal retraction is a mandibular retraction that requires combined orthodontic-orthognathic treatment in adults and is indicated to be corrected by wearing a functional orthodontic appliance in children who are in their growth spurts or growth spurts.
Mandibular retraction is usually reflected in the deep overjet and deep coverage of anterior teeth, and is commonly caused by genetic and environmental factors. Due to the different time of people’s cognition of oral health and aesthetics, the time of treatment is also different, so according to the different age groups of the population treatment modalities are also different.
1. Early growth period children can improve their symptoms by breaking various bad oral habits and treating nasopharyngeal disorders.
2. Peak growth and development generally in the period of replacement teeth to the early permanent teeth intervention treatment, mostly using orthopedic force orthodontic appliances or functional orthodontic appliances on the jaw deformity for growth improvement. Minus extraction can also be done according to the situation. During the gap closure process, the developmental abnormality of the jaws can be compensated or masked by the different movement of the maxillary and mandibular teeth, and the anterior and posterior teeth.
3. Adults can have LeFort I osteotomy or maxillary anterior osteotomy of the maxilla to adjust the shape and position of the maxilla and maxillary dental arch. The mandible can be reshaped and positioned by performing a sagittal split osteotomy of the ascending branch of the mandible to bring the mandible forward to the correct position. In this way, the normal relationship between the anterior and posterior teeth can be established, and the dental relationship can be coordinated with the orthodontic appliances, which greatly improves the oral function and facial aesthetics.