What does anterior deep overjet mean?
Dec 29, 2022
Source: Cainiu Health
Dr. Guo Xiheng
Introduction
Deep overjet refers to the maximum horizontal distance from the incisal edge of the upper incisors to the labial surface of the lower incisors exceeding 3 millimeters. It is a relatively common clinical malocclusion, often associated with protruding upper front teeth and a retruded chin, similar to dental caries in terms of its negative impact on aesthetics. One of the main causes is不良 habits such as prolonged finger sucking, biting the lips, and tongue thrusting against the teeth.
In daily life, some people are affected by their everyday activities due to excessive overjet of the front teeth. But what exactly does "excessive overjet of the front teeth" mean?
What Is Excessive Overjet of the Front Teeth?
Excessive overjet of the front teeth refers to a horizontal distance greater than 3 millimeters between the cutting edge of the upper front teeth and the outer (lipside) surface of the lower front teeth. This is a relatively common type of malocclusion in clinical practice, often accompanied by protrusion of the upper jaw (sometimes referred to as "buck teeth"), similar to dental caries in terms of prevalence, and significantly affects facial aesthetics. One of the main causes includes bad habits such as prolonged finger-sucking, biting the lips, or tongue-thrusting against the teeth. Other factors include local obstructions affecting tooth eruption, mouth breathing, and genetic predisposition. How is it treated? First, patients must eliminate harmful oral habits. More severe cases require medical intervention, including orthodontic treatment or surgical correction provided at a hospital.
In clinical medicine, patients with excessive overjet often have accompanying mandibular retrusion (receding lower jaw), and the correction method for both conditions typically involves wearing orthodontic appliances. Adult patients can undergo fixed appliance therapy or clear aligner treatments such as Invisalign, which gradually move and realign the teeth to restore normal overjet, overbite, and occlusion. In some cases, extraction of certain teeth—particularly when deep overjet, crowding, or asymmetry exists—may be necessary.
It's also important to maintain good oral hygiene. If you notice any abnormalities in tooth position or other oral issues, please visit a dental clinic promptly for examination and treatment. We hope this information has been helpful. Wishing you good health and a happy life!
