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Orofacial Anatomy Mid-Term Review Exam
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Orofacial Anatomy Mid-Term Review Exam 2023- 2024 Mucobuccal fold - ANSWER Base of the vestibule where the bucca l mucosa meets the alveolar mucosa alveolar mucosa - ANSWER Mucosa between the mucobuccal fold and gingiva. buccal mucosa - ANSWER Mucous membrane lining the cheek. labial mucosa - ANSWER the inner surface of the lips mucogingival junction - ANSWER Distinct line of color change in the tissue where the alveolar membrane meets with attached gingivae attached gingiva - ANSWER gingiva that tightly adheres to the bone around the roots of the teeth interdental papilla - ANSWER sharp, pointed projection of gingi val in between the teeth Lingual frenum of tongue - ANSWER -thin sheet of tissue -attaches midline of ventral surface of tongue to floor of mouth sublingual fold - ANSWER ridge of tissue on each side of the floor of the mouth sublingual caruncle - ANSWER small papilla at anterior end of each sublingual fold Classes of Teeth - ANSWER incisors, canines, premolars, molars arches of teeth - ANSWER maxillary and mandibular primary dentition - ANSWER consists of 20 teeth (A-T) that are nor mally lost during childhood and are replaced by the permanent teeth what teeth are missing in primary dentition - ANSWER premol ars permanent dentition - ANSWER consists of 32 teeth that are design ed to last a lifetime what are the 3 dentition periods - ANSWER primary, mixed, perma nent FDI - ANSWER uses dashes ridges on teeth - ANSWER linear elevations on all teeth cusps - ANSWER canine and posterior teeth one major elevation how many cusps on a maxillary molar - ANSWER 2 buccal, 2 lingua l, (5th normally on 1st molar) how many cusps on maxillary premolar and a mand 1st premola r - ANSWER 2 how many cusps on a mand 2nd premolar - ANSWER 3 - 2 buccal, 1 l ingual Contact area - ANSWER Where the proximal sides of two teeth come together and touch Height of contour - ANSWER The greatest distance around a tooth Embrasures are - ANSWER The proximal spaces around a tooth, v-shaped valleys, part of the self-cleaning process Line angle - ANSWER Junction of two walls in a cavity preparation point angle - ANSWER Angle formed by the junction of three su rfaces How many line angles do anterior teeth have? - ANSWER 4 How many line angles are there in the posterior teeth? - ANSWER 8 How many point angles does each tooth have? - ANSWER 4 What do incisors do? - ANSWER tear food What do molars do? - ANSWER grind food What do premolars do? - ANSWER pierce and crush Shapes of teeth - ANSWER triangle, pentagon, trapezoid, and rhomboid gingival sulcus - ANSWER space between the free gingiva and t he tooth surface where does attached gingiva begin - ANSWER base of gingival sulcu s free gingiva groove - ANSWER anatomical feature on outside of th e gingiva Col Region - ANSWER interdental gingiva has a nonvisible concave sha pe between facial and lingual surfaces free gingival groove - ANSWER shallow linear depression tha t separates the free and attached gingiva Acellular cementum - ANSWER 1st layers of cementum deposited at the DCJ and also called primary cementum. At least one layer covers the entire outer sur face of each root with more layers covering the crucial 1/3 near the CEJ. Cellular cementum - ANSWER Called 2ndary cementum because it is deposited later than the primary type. Consists of the last layers of cementum deposited over the acellular cementum mainly in the apical 1/3 of each root. Hypercementosis - ANSWER excessive production of cellular cementum occurr ing at the apex of the root periodontal ligament - ANSWER thinnest part around the middle 1/3 of the root (.15-.38 mm) radiolucent on radiographs Tooth Function - ANSWER Teeth aid in digestion Bite and tear food Aid in speech root is covered by - ANSWER cementum crown is covered by - ANSWER enamel enamel - ANSWER hard, outermost layer of a tooth Hardest substance in the body Thick in the top and thin in the bottom resistant to wear and tear cementum of tooth - ANSWER hard connective tissue fastens tooth securely in the socket pulp - ANSWER soft tissue within a tooth, containing nerves and blood vessels Eruption of tooth - ANSWER is the moving of that tooth through its surrounding tissues Deciduous or primary tooth - ANSWER Calcification starts around 4th month of fetalThe benefits of buying summaries with Stuvia:
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