Mandibular Incisors 5m1j1i
This document was ed by and they confirmed that they have the permission to share it. If you are author or own the copyright of this book, please report to us by using this report form. Report 3i3n4
Overview 26281t
& View Mandibular Incisors as PDF for free.
More details 6y5l6z
- Words: 409
- Pages: 13
Mandibular Incisors
Dr. Syed Sadatullah Ibnsina National College Jeddah
Introduction Mandibular incisors are four in number Mandibular central incisor and lateral are similar in anatomy and complement each other in function They are smaller than the maxillary incisors Mandibular central incisor erupts between the age of 6 and 7 Mandibular lateral incisor erupts between the age of 6 and 8
Labial aspect
Labial surface of mandibular central incisor is very small. It is the narrowest tooth mesiodistally of all the permanent teeth It is bilaterally symmetrical It is the only incisor where both mesioincisal and distoincisal angles are sharp and at right angles The labial surface is inclined lingually
Labial aspect
Lingual aspect
The lingual aspect is concave from the incisal edge to the cervical line
Cingulum is smooth and barely visible The surface is smooth and devoid of any grooves. No other tooth in the mouth, except the mandibular lateral incisor, shows so few developmental lines and grooves.
Lingual aspect
Mesial aspect
The labial outline is almost straight, except near cervical third where it is convex
The lingual margin is ‘S’ shaped The cervical line on the mesial and distal surface is convex incisally
Mesial aspect
Distalaspect Distal surface is very similar to the mesial surface. The cervical line is less curved.
Distal aspect
Incisal aspect This aspect illustrates the bilateral symmetry of this tooth.
The labiolingual diameter is greater than mesiodistal diameter. Newly erupted teeth show mamelons which wear off upon mastication
Incisal aspect
Root The root is single and straight. The deflection of the root if present is on the labial or distal side.
Average Dimensions in millimeters Crown Length
Root Length
9.0
12.5
Mesiodistal Diameter at Area
5.0
Mesiodistal Diameter at Cervical Line
3.5
Labiolingual Diameter at Crest of Curvature
6.0
Labiolingual Diameter at Cervical Line
5.3
Curvature of Cervical Line M D
3.0
2.0
Mandibular Lateral Incisor
Mandibular lateral incisor is slightly wider mesiodistally
The concavity in the lingual aspect is slightly more when compared to mandibular central incisor The cervical portion of the lingual aspect is narrower while the incisal portion is wider. This gives the crown a more or less a fan shaped appearance
The incisal edge follows the mandibular arch, giving the crown a slightly twisted appearance on its root
Labial aspect
Lingual aspect
Incisal aspect
Mesial aspect
Distal aspect
Dr. Syed Sadatullah Ibnsina National College Jeddah
Introduction Mandibular incisors are four in number Mandibular central incisor and lateral are similar in anatomy and complement each other in function They are smaller than the maxillary incisors Mandibular central incisor erupts between the age of 6 and 7 Mandibular lateral incisor erupts between the age of 6 and 8
Labial aspect
Labial surface of mandibular central incisor is very small. It is the narrowest tooth mesiodistally of all the permanent teeth It is bilaterally symmetrical It is the only incisor where both mesioincisal and distoincisal angles are sharp and at right angles The labial surface is inclined lingually
Labial aspect
Lingual aspect
The lingual aspect is concave from the incisal edge to the cervical line
Cingulum is smooth and barely visible The surface is smooth and devoid of any grooves. No other tooth in the mouth, except the mandibular lateral incisor, shows so few developmental lines and grooves.
Lingual aspect
Mesial aspect
The labial outline is almost straight, except near cervical third where it is convex
The lingual margin is ‘S’ shaped The cervical line on the mesial and distal surface is convex incisally
Mesial aspect
Distalaspect Distal surface is very similar to the mesial surface. The cervical line is less curved.
Distal aspect
Incisal aspect This aspect illustrates the bilateral symmetry of this tooth.
The labiolingual diameter is greater than mesiodistal diameter. Newly erupted teeth show mamelons which wear off upon mastication
Incisal aspect
Root The root is single and straight. The deflection of the root if present is on the labial or distal side.
Average Dimensions in millimeters Crown Length
Root Length
9.0
12.5
Mesiodistal Diameter at Area
5.0
Mesiodistal Diameter at Cervical Line
3.5
Labiolingual Diameter at Crest of Curvature
6.0
Labiolingual Diameter at Cervical Line
5.3
Curvature of Cervical Line M D
3.0
2.0
Mandibular Lateral Incisor
Mandibular lateral incisor is slightly wider mesiodistally
The concavity in the lingual aspect is slightly more when compared to mandibular central incisor The cervical portion of the lingual aspect is narrower while the incisal portion is wider. This gives the crown a more or less a fan shaped appearance
The incisal edge follows the mandibular arch, giving the crown a slightly twisted appearance on its root
Labial aspect
Lingual aspect
Incisal aspect
Mesial aspect
Distal aspect
Related Documents 3h463d
Mandibular Incisors 5m1j1i
March 2021 0
Mandibular Injections 6e6f4j
November 2022 0
Biomecanica Mandibular b4l44
November 2019 53
Torus Mandibular j6l4g
March 2021 0
Mandibular Nerve 186d2s
November 2021 0
Exostosis Mandibular 2x1s67
December 2019 35More Documents from "Vishal Patel" 3c2a5k
Mandibular Incisors 5m1j1i
March 2021 0
Navneet Publication 1r45a
December 2019 73
Navneet 52706q
November 2019 50
Nbde Resources q2i30
November 2019 68
Gtu Knowledge 4j5d3i
March 2021 0