Dental Anatomy Final Exam review Questions and Answers 100% Pass

Dental Anatomy Final Exam review Questions and Answers 100% Pass Describe the difference between the Incisal Ridge and Incisal Edge - Incisal edge: sharp line that delineates facial from lingual forms Incisal ridge: covers entire incisal surface. Has more surface area then incisal edge. When does calcification begin? By what time have all primary teeth begun calcification - 13-16 weeks in utero calcification commences 18-20 weeks in utero: all primary teeth have initiated calcification What is the order of the first evidence of Calcification in the Primary dentition? - Central incisor → 1st Molar → Lateral incisor → Canine → 2nd Molar Which Primary teeth are First to have a complete root? When? - Mx Central incisor Md Central incisor Md Lateral incisor All at 1.5 years Which Primary teeth are last to have a complete root? When? - Mx and Md canines 3.25 years of age By what age does anterior tooth spacing stop? - 6 years of age 2 | P a g e Created by Katelyn Whitman © 2025, All Rights Reserved. 100% PASS GUARANTEE Which Permanent tooth is the 1st to erupt into the oral cavity? What age? - Permanent 1st molars (Md precedes Mx slightly) 6 years of age By age 6, which Permanent teeth have Crowns that are Completely calcified? - Central and Lateral incisors 1st Premolars 1st Molars (Md and Mx for all of these) What is the Chronology of Calcification of the Permanent Mandibular teeth? - 1st Molar → Incisors → Canines → Premolars → 2nd Molar → 3rd Molar What is the Chronology of Calcification of the Permanent Maxillary teeth? - 1st Molar → Central incisor → Canine → Lateral incisor → Premolars → 2nd Molar → 3rd Molar What is the Order of Eruption for the Permanent Mandibular teeth? - 1st Molar → Central incisor → Lateral incisor → Canine → 1st Premolar → 2nd Premolar → 2nd Molar → 3rd Molar By 8 years of age, what is the state of the 2nd and 3rd Permanent Molars? - 2nd molar has not yet erupted 3rd molar has not yet begun calcification What are the 4 classifications of Cusp Form? - Haplodont: single cone Triconodont: 3 cusps in straight line *Tritubercular Molar: 3 cusps in primary triangle* Quadritubercular Molar: 4 cusps in rectangular or rhomboid form 3 | P a g e Created by Katelyn Whitman © 2025, All Rights Reserved. 100% PASS GUARANTEE From a Proximal aspect of the Mandibular teeth, which tooth has the greatest and which tooth has the least Proximal Reference angle? give the specific angle measurement - Greatest angle: Lateral incisor at 23º Least angle: 2nd Premolar at 6º From a Facial aspect of the Mandibular teeth, which tooth has the greatest and which tooth has the least Facial Reference angle? give specific measurement - Greatest angle: 2nd Molar at 14º Least angle: Lateral incisor at 0º What is the Facial reference angle of the Mandibular 2nd Premolar? - 9º List the Location of the Proximal Contact areas of the Maxillary Anterior teeth - Midline: Incisal third Distal of central: Junction of incisal and middle thirds Mesial of lateral: Junction of incisal and middle thirds Distal of lateral: Middle third Mesial of canine: Junction of incisal and middle thirds Distal of canine: Middle third (I,J,J,M,J,M) Which periodontal fibers are Resistant to forceful impaction of a tooth into the alveolus? - Oblique fibers Name the Smallest embrasue in the Posterior Maxilla - Between 1st and 2nd Molars Describe the difference between Primary and Permanent teeth regarding the following: Enamel 4 | P a g e Created by Katelyn Whitman © 2025, All Rights Reserved. 100% PASS GUARANTEE Dentin Pulp horns Pulp chambers - -Primary Enamel is Thinner and has Consistent depth -Primary Dentin is Thinner (limited between enamel and pulp chambers) -Primary Pulp Horns are Higher (higher underneath crown heights) -Primary pulp chambers are proportionately Large Describe the Incisal ridge of the Primary Maxillary Lateral incisor. Describe the Lingal fossa of this tooth. - Curved toward the Facial surface Lingual fossa is Modestly (moderately) deep Where is most of the tooth structure on the Primary Maxillary Lateral incisor? Why? - Most tooth structure is on the Facial surface Due to Lingual taper (less tooth structure on the lingual)