Oral Cavity Anatomy Teeth Boundaries Adult and Deciduous Dentition

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The oral cavity (or the mouth) houses all teeth and is the entryway of food and air. It is also used for speech and social expression including poking your tongue out. Please subscribe https://www.youtube.com/@dentogenesis... • We can think of the boundaries of the oral cavity as anterior which is the front, and that is the lips, posterior, which is the back and that is the oropharynx or the throat behind the mouth, superior, which refers to the upper aspect and that is the palate, inferior, which is the lower aspect and that is the floor of the mouth and finally laterally, which is to the side and that is the buccal mucosa. • Other structures of the oral cavity include, but are not limited to: the tongue, gingiva (which are the gums), the frenum (which attaches the tongue to the gum/floor of the mouth and the lips to the gums), we also have the alveolus, which is the jaw bone and finally the teeth themselves! • The upper teeth are housed in the maxilla, which is the upper jaw bone, and the lower teeth are housed in the mandible, which is the lower jaw bone. In adults, there are generally 16 teeth in the maxilla and 16 teeth in the mandible. In each quadrant, which is an equal quarter of the mouth, there are 2 incisors, 1 canine, 2 premolars, and 3 molars. On the other hand, children have 20 baby or deciduous teeth. 10 in the maxilla and 10 in the mandible. Each quadrant contains 2 incisors, 1 canine, and 2 molars. Note that in the deciduous teeth, there are no premolars. • Each tooth consists of 3 layers: • The enamel, which is the outer layer, the dentine, which is the middle layer, and the pulp which is the innermost layer, which has nerves and blood vessels, and extends all the way from the roof of the pulp chamber to the bottom of each root canal. • Each tooth also has 4 surfaces: • The buccal surface, also known as the labial or facial surface is the side of the tooth adjacent to the cheek, the lips, or the facial structures. Generally buccal is for posterior teeth and labial is for anterior teeth. There is also the lingual surface for mandibular teeth which is adjacent to the tongue and the maxillary counterpart is the palatal which is the surface adjacent to the palate. Intuitive right? There is the mesial surface which refers to the side of the tooth closest to the middle, remember mesial refers to mesial or medial. And finally, there is the distal aspect of the tooth, which is the distant part and that is the one facing AWAY from the middle. • Teeth are also surrounded by the periodontium, Peri meaning around, and iodonium – meaning referring to the tooth. The structures surrounding the tooth are The cementum, the periodontal ligament, the gingiva, and the alveolar bone. • The part of the tooth above the gum is generally termed the crown, and the part below the gums is called the root(s). • Follow Me On: • Facebook: / dentogenesiss • Instagram: / dentogenesis • Please subscribe https://www.youtube.com/@dentogenesis... • #dentogenesis #dentistry #dentist #dentalanatomy #teeth #dentalstudents #dentaldigest #bentist #ameloblastoma #toothid #toothanatomy #toothpaste #dental #education

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