Primary characteristics Age Sex Staturegmch.gov.in/sites/default/files/documents/Identification Lect...
Transcript of Primary characteristics Age Sex Staturegmch.gov.in/sites/default/files/documents/Identification Lect...
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Primary characteristics
Age
Sex
Stature
Dr Amandeep Singh, Asstt Professor
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AGE
Dr Amandeep Singh, Asstt Professor
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Determination of age Three phases Foetus and new born
Children and young adults upto 25 years of age
Adults over the age of 25 yrs
Dr Amandeep Singh, Asstt Professor
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In Foetus and new born
Viability
Important in cases of
infanticides
Dr Amandeep Singh, Asstt Professor
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In Children and Young adults (less than 25 yrs)
General Physical Examination
Dental examination
Radiological examination (ossification of bones)
Miscll. Birth record, certificates, etc
Dr Amandeep Singh, Asstt Professor
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General Physical Examination
General configuration and bodily development In male
Pubic hair 13‐15 yrs Axillary hair 14‐16 yrs Beard/moustache 15‐17yrs ‐ Body hairs 17‐20yrs ‐ Development of breasts
‐‐ Greying of scalp hair 40 yrs Greying of pubic hair 55 yrs
In female
13‐14 yrs 14‐15 yrs
13 to 20yrs 40 yrs 55 yrs
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Height & Weight
Full term child:
50 cm length
(Doubles in 4 years)
Weight 2.5 – 3 Kg
(Doubles in 5 months and trebles in 1 year)
Dr Amandeep Singh, Asstt Professor
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Two sets Temporary/ Milk/ Deciduous teeth
Permanent teeth
Successional teeth
Superadded teeth
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Difference between Temporary teeth Permanent teeth
Smaller Larger Lighter More strong, heavy
Anterior teeth vertical Anterior teeth inclined forward
Neck more constricted Neck less constricted
Crown – China white Crown – Ivory white
Ridge at junction of crown No such ridge at junction of and fangs crown and fangs
Cusps flat Prominent Cusps Roots smaller and more Roots are larger and less
divergent divergent Presence of tooth germ below No such thing visible on X ray
on X ray
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Dental Formula
65
78
5 6
8 7
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Teeth Teeth Temporary (Mth) Permanent (Yrs)
Central Incisors L 6–8 U 7‐9 6 – 8
Lateral Incisors L 10‐12 U 7‐9 7 – 9
Canines 17 – 18 11 – 12
1 st Premolars Absent 9 – 11
2 nd Premolars Absent 10 – 12
First Molars 12 – 14 6 – 7
Second Molars 20 – 30 12 – 14
Third Molars Absent 17 – 21
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M I I B B C M M
6 7 8 9 10 11 12‐14 17‐21
Mother Is In Bed Baby Comes Monday Morning
Permanent teeth eruption:
Dr Amandeep Singh, Asstt Professor
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Period of mixed dentition
6 to 11 years of age
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Age from teeth beyond 25 yrs of age
Gustafson’ s Methods Attrition
Periodontosis Secondary dentine deposition
Cementum apposition
Root resorption
Root translucency
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Scoring of different parameters Attrition (A): A0‐ No Attrition
A1‐ Attrition limited to enamel level A2‐ Attrition limited to dentine level A3‐ Attrition up to pulp cavity.
Peridontal disease (P): P0‐ No obvious peridontal disease P1‐ Beginning of peridontal ds. but no bone loss P2‐ Peridontal disease more than 1/3rd of the root P3‐ Peridontal disease more than 2/3rd of the root.
Secondary dentine (S): S0‐ No secondary dentine formation S1‐ Secondary dentine up to upper part of pulp cavity S2‐ Secondary dentin up to 2/3rd of the pulp cavity S3‐ Diffuse calcification of entire pulp cavity.
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Root translucency (T): T0‐ No translucency T1‐ Beginning of translucency T2‐ Translucency more than 1/3rd of the apical root T3‐ Translucency more than 2/3rd of the apical root.
Cementum apposition (C): C0‐ Normal cementum C1‐ Thickness of cementum more than normal C2‐ Abnormal thickness of cementum near the apex of the root C3‐ Generalized abnormal thickness of cementum throughout the apex of the root.
Root resorption (R): R0‐ No resorption R1‐ Spotted resorption R2‐ Resorption limited to cementum R3‐ Extensive resorption of both cementum and dentin
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Gustafson’s formula
Estimated age = 5.34 (total score) + 4.08
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Other information from teeth Sex from teeth
Race from teeth
Occupation from teeth
Social status Teeth used as weapon of offence
Bite marks on victim
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Joints
Shoulder Elbow
Wrist Hip
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Appearance of ossification centres Fusion of epiphysis with diaphysis
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Sternum Appearance Fusion
Manubrium 5‐6m(IU) >50y
Body 1st Segment 5‐6m (IU) 2nd Segment 7m (IU) 14‐25
3rd Segment 7m (IU) years 4th Segment 10m (IU)
Xiphoid 3 yrs >40y