2015年1月5日 · A free gingival groove separates the attached gingiva from the marginal gingiva. This slight depression on the outer surface of the gingiva does not correspond to the depth of the gingival sulcus but instead to the apical border of the junctional epithelium.

The free gingival groove serves as an important landmark, helping to define the boundaries of the gingival sulcus, the small space between the tooth and the gum. This periodontal anatomy feature plays a vital role in maintaining gingival health and overall oral hygiene .

The gingiva is divided into two distinct zones: free gingiva and attached gingiva. The free gingiva surrounds the tooth forming a sulcus (or crevice) next to the tooth. On the facial surface of the gingiva, a shallow depression called the free gingival groove separates the unattached gingiva from the attached gingiva.

Attached gingiva – This tissue is adjacent to the free gingiva and is keratinized and firmly attached to the bone structure. It can range from 3-12 mm in height. Free gingiva – This tissue is not attached and forms a collar around the tooth. The trough around the tooth is called the sulcus and its depth is normally 1-3 mm.

The free gingival groove is a depression that appears in about 50% of population. The groove appears at the border of the free an d attached gingiva and usually represents the base of the gingival sulcus.

The free gingival margin is the area located in between the sulcular epithelium and the epithelium of the oral cavity. This interface exists at the most coronal point of the gingiva. This is also referred to as the crest of the marginal gingiva.

In some people, there is a visibly demarcated margin that appears as a shallow linear depression known as the free gingival groove. The free gingival margin ranges in width from .5 to 2 mm and is shaped in a scalloped pattern that matches the shape of the cementoenamel junction of the teeth.

2015年1月4日 · The inner portion of the gingival sulcus is lined with nonkeratinized epithelium; the outer portion is the free gingiva, which is covered with keratinized epithelium. The attached gingiva begins at the base of the gingival sulcus. A gingival groove often occurs on the outside of the free gingiva and corresponds to the base of the sulcus.

2015年1月14日 · The free gingiva, or free marginal gingiva, surrounds the tooth and creates a cuff or collar of gingiva extending coronally about 1.5 mm. The surface of the free gingiva next to the tooth forms the gingival wall of the sulcus. 2 The free gingiva may be distinguished from the attached gingiva by a free gingival groove, a slight depression on the ...

Shallow linear notch that demarcates attached gingival tissue from free gingival tissue.