furcation grade is a clinical classification used to describe how much periodontal breakdown has reached the root-furcation area of a multi-rooted tooth (most often molars). In plain terms, it tells how “open” or “involved” the space is where the roots split. Dentists and hygienists commonly record furcation grade during periodontal exams and supportive periodontal (maintenance) visits. It helps summarize a complex finding in a simple, standardized way for charting and communication.

furcation involvement is a periodontal (gum-and-bone) finding that affects multi‑rooted teeth, most commonly molars. It means the space where the roots split (the furcation) has lost supporting bone and attachment due to disease or other factors. It is commonly used in dental charting, periodontal diagnosis, and treatment planning. It helps communicate how advanced and accessible the bone loss is around a molar’s roots.

An infrabony pocket is a periodontal (gum) pocket where the base of the pocket lies **below the crest of the surrounding alveolar bone**. In plain terms, it means gum attachment loss has occurred in a way that creates a “vertical” bone defect alongside a tooth root. The term is commonly used in **periodontal charting, diagnosis, and treatment planning** for gum disease. It helps clinicians describe **where bone loss is located** and what treatment approaches may be feasible.

A suprabony pocket is a periodontal pocket where the base of the pocket sits *above* (coronal to) the crest of the alveolar bone. In plain terms, it is an abnormally deep “space” between the tooth and gum that does not extend down past the top of the supporting bone. It is most commonly discussed in periodontal examinations, charting, and treatment planning for gum disease. Dental teams use the term to describe *where the pocket is positioned relative to bone*, not to name a dental material.

A periodontal pocket is an abnormally deep space between the tooth and the surrounding gum tissue. It forms when the supporting tissues around a tooth are affected by periodontal (gum) disease. Clinicians most often discuss a periodontal pocket when measuring gum health during a periodontal exam. Patients may hear the term when results are explained after “gum probing” around the teeth.

The mucogingival junction is the visible boundary between the attached gum tissue and the looser lining tissue inside the mouth. It is most often seen on the facial (cheek/lip) side of teeth as a change in color and texture. Dentists use it as an anatomic landmark during periodontal exams, treatment planning, and some surgical procedures. It is not a dental material or filling; it is a normal feature of the gums and oral lining.

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free gingiva is the narrow band of gum tissue that forms the visible gumline around each tooth. It is the part of the gingiva (gums) that is not firmly attached to the underlying bone. It creates the outer wall of the natural space between tooth and gum called the gingival sulcus. Dentists use the free gingiva as a key landmark during exams, cleanings, and many restorative procedures near the gumline.

attached gingiva is the firm, pink gum tissue that is tightly bound to the underlying bone around teeth. It sits between the free (marginal) gingiva near the gumline and the more movable lining tissue farther down. It is part of the “keratinized gingiva,” meaning its surface is tougher and more resistant to rubbing and chewing forces. It is commonly discussed in periodontal exams, treatment planning, and when evaluating gum recession risk or comfort during brushing.

keratinized gingiva is the band of firm gum tissue around teeth (and sometimes around implants) that has a keratinized surface layer. It typically extends from the gum margin to the mucogingival junction, and includes the free gingiva and attached gingiva. In plain terms, it is the tougher, more “skin-like” gum that helps tolerate chewing and brushing forces. Clinicians discuss keratinized gingiva when assessing gum health, recession risk factors, comfort with brushing, and soft-tissue conditions around implants.