Gemination is the kind of teeth shape abnormality, when the single tooth gem gets divided into two parts, which, in their order develop either double crown (the upper part of the tooth, located above the gum line) or double root (the lower part of the tooth, located below the gum line). In case of a double crown, this phenomenon is quite easy to nr noticed, while if there is a double root, it can not be noticed generally, and tooth counting procedure reveals the normal amount of teeth.
General Anesthesia is the state of unconsciousness, which can controlled by the doctor, and which is accompanied by either a partial or complete loss of protective reflexes, such as pain, fear, the ability to maintain airway and respond to any physical stimulation or verbal command. 
General Dentist is the primary dental care provider for all age groups patients.
Geriatric dentist is the primary dental care provider for senior citizens.
Gingiva is the name of the soft tissue, which is located around the erupted teeth, and which overlies the crowns of teeth, which have not erupted yet. It is also known as the gums.
Gingival Crest is how the prominent edge of either occlusal or incisal gingival called.
Gingival Hypertrophy is the phenomenon, when the gingival becomes abnormally enlarged. This condition may be caused by poor oral hygiene, as well as in the result of the application of some certain medications.
Gingivectomy is the method of the gingival removal, which is usually applied in the periodontal disease treatment.
Gingivitis is the inflammation or swelling of gum tissue, which usually occurs in the result of plaque. In case if this health condition would be left without proper treatment, this can become the reason of periodontitis.
Gingivoplasty is the type of a surgical procedure, which is conducted with the aim of gingiva reshaping.
Goldon Proportion is the kind of a guideline, which is often used by dentists in their most esthetic appearance of each separate tooth determination. For example in order to look their best teeth need to be or a certain height to width ration.
Graft is a piece of alloplastic material, which is placed in contact with the tissue to repair any possible defect or supplement any deficiency.
Groove means a long and narrow depression.
Guided Tissue regeneration is the procedure, which is usually performed during the flap surgery for periodontal disease, and during which a membrane gets inserted between the alveolar bond and the bond graft in order to encourage the gum tissues to grow and develop into the alveolar bone.
Gutta Percha is the type of a material, which is widely applied in the filing of the root canals of the teeth.