Dental Terminology Students PDF

1-Lips Structures of the oral cavity. 2-Teeth 3-Gingiva 4-Cheek 5-Tongue 6- Floor of the mouth 7-Maxillary arch 6- Maxillary teeth 7- Mandibular arch 8- Mandibular teeth  Lips Two Lips Upper Lip and Lower Lip. The Corner of the mouth where the two lips meet is c...

1-Lips Structures of the oral cavity. 2-Teeth 3-Gingiva 4-Cheek 5-Tongue 6- Floor of the mouth 7-Maxillary arch 6- Maxillary teeth 7- Mandibular arch 8- Mandibular teeth  Lips Two Lips Upper Lip and Lower Lip. The Corner of the mouth where the two lips meet is called Commissure Two Grooves are distinguished around the lips. *Nasolabial groove *Labiomental groove.  Palate The anterior part is called Hard Palate The posterior part is called soft palate which ends with a small structure named uvula  Gingiva It is the tissue that surrounds the cervical part of teeth. Cheeks Linea alba buccalis  Tongue The tongue is a broad flat organ composed of muscles and glands. It rests on the floor of the mouth.  Oral cavity is the 1st part of the digestive system It contains the structures necessary for mastication, Taste & speech; teeth, tongue & salivary glands. 7  The floor of the mouth It is shiny and some large blood vessels may be seen near the surface. Beneath the tongue there are 2 bilateral bulges caused by the presence of large salivary glands.  Midline (vertical imaginary line) that divides the dental arch into 2 approximately equal right & left halves. How many Quadrants in - the entire oral cavity? Teeth are arranged in the oral cavity in 2 arches are Dental Arches known………………………….., one lower & one upper. Maxillary arch -The Upper Arch is called the………………………. the teeth in this arch are known Upper or Maxillary Teeth. ……………………………………. -The lower arch is known Mandibular arch, ……………………… The teeth in this arch are called Lower or Mandibular Teeth. …………………………………………. 10  Because teeth, when formed, cannot increase in size Dentitions. The 1st is the deciduous or primary dentition. The 2nd is the permanent or secondary dentition.  Different dentition periods Deciduous dentition period (6m- 6y) Shedding Mixed dentition period (6y-12y) Permanent dentition is start at about 12y  Tooth Anatomy ▫ 1- Macro-anatomy of the tooth: Each tooth has 3 anatomical parts: I. Crown II. cervical line or cemento-enamel junction (CEJ). III. Root (s) 13  Tooth Anatomy ▫ 2- Micro-anatomy of the tooth 3 calcified tissues: 1-………….. 2-………………. 3- ……………… + One soft specialized connective tissue: ……………………. 14 Pulp and pulp Cavity E A- pulp horn D B- pulp chamber 1- Coronal pulp C A- root canal 2- Radicular pulp B- Apical foramen  The Periodontium: is defined as the supporting tissues of the teeth in the mouth It includes: 2 Hard Tissues 2 Soft Tissues 1- ……………… Cementum Gingiva 1- …………………….. It is a pink strip of oral Covers the anatomical tissues that surrounds the root of the tooth cervical part of the teeth ……………….. 2-Alveolar Bone 2- Periodontal …………………Ligament Is the portion of the maxillary Fibrous ligament that or mandibular bones that attaches surrounds the roots of the teeth the tooth to the alveolar bone 16 Line & Point Angles Line angle: It is the junction of 2 adjacent surfaces & its name is derived from both surfaces Point angle: It is the junction of 3 adjacent surfaces & its name is derived from these surfaces. How many line angles In anterior teeth? 18  How many line angles In posterior teeth? Presentation title 19 Tooth eruption  Word “eruption” Tooth eruption properly refers to cutting of tooth through the gum.  Tooth eruption It is a developmental process whereby the tooth moves in an axial direction from its location within the alveolar crypt of the jaw into a functional position in the oral cavity.  PASSIVE ERUPTION: Does not involve tooth movement but occurs due to apical recession of gingival tissue exposing more tooth structure into the oral cavity. Gingival recession Passive eruption  Anatomical & Clinical Crown The anatomical crown is that part of the tooth normally covered by enamel. The clinical crown refers to the amount of tooth visible in the oral cavity. Clinical root Anatomical which is root which is embedded covered Within the bone With the cementum  Problem based questions ▫ 8 years children come to your clinic has a newly erupted maxillary central incisors, what do you think about the clinical crown of this tooth? The clinical crown appears smaller than the anatomical crown  Patient come to your clinic complaining from inflamed receded gingiva, what's Your opinion about the clinical crown of this tooth? The clinical crown appears greater than the anatomical crown