Which of the following do not contribute to arch stability ?
Which of the following do not contribute to arch stability ? A. Cusps B. Root formsC. Embrasures D. Periodontal fibers
Which of the following do not contribute to arch stability ? A. Cusps B. Root formsC. Embrasures D. Periodontal fibers
Mesial contact area of the permanent canine is at the______________? A. Middle third B. Junction of the incisal and middle thirdsC. Junction of the middle and cedrvical thirds D. None of the above
Distal contact of upper first premolar is________________? A. Lower than mesial contact area B. Little cervical to junction of occlusal and middle third of crown C. Higher than mesial contact areaD. A and B
The contact area on the distal surface of a maxillary first premolar should be placed in________________? A. Middle 3rd of proximal surface with lingual embrasure greater than the facial embrasure B. Occlusal 3rd of proximal surface with the lingual embrasure…
The tooth that is commonly seen in an abnormal relation and contact with its adjacent teeth of the same arch is ________________? A. Mandibular first premolar B. Mandibular lateral incisor C. Maxillary central incisorD. Maxillary lateral incisor
Largest embrasure lies between______________? A. Maxillary central incisors B. Maxillary central and lateral incisorC. Maxillary canine and first premolar D. Maxillary lateral incisor and canine
The embrasure areas in the following areas are contentious______________? A. Labial and lingual B. Lingual and Occlusal C. Incisal and Occlusal D. Labial and Occlusal
All embrasure spaces are reflection of the______________? A. Form of the teeth involved B. Size of the teeth involved C. Eruption sequence involved D. None of the above
The biting forces at molar region during mastication is_______________? A. 20 to 55 pounds B. 30 to 75 pounds C. 50 to 75 poundsD. 90 to 200 pounds
The faciolingual angulation of the upper central incisor is approximately___________________? A. 20°B. 28° C. 33° D. 38°