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Forensic Odontology
• Unknown Body Identification
• Mass Disaster Investigation
• Dental Evidence Identification
• Bite Mark Evidence Comparison
• Child, Spouse, Senior Abuse Investigation
• Criminal Investigation Leads
• Civil Litigations
• Pictures & Video Tape • Fingerprint cards and ID Information• X-Rays and Medical Records• Known Blood Types and DNA Records• Occupant/Passenger/visitor Lists• Non Listing Occupant Passengers/visitor• Seat/room Assignment
Unknown Body Identification
• About 10,500 people missing every year in US
• Only 5% of those missing persons have dental records on file
• About 5,400 unidentified bodies were found every year.
• 65 % of those bodies were identified by dental records
• The top 4 States: CA, TX, MI,
• Are the Remain Human
• Are the Remain Recent
• Identification of the Remain
• Estimation of Age• Determination of Sex,
Race, Stature• Manner and Cause of
Death• Means and Facts
related to Death
Dental X-Ray Identification
• Alignment of Teeth
• Uniqueness of Teeth
• Rotation and Direction
• Dental Restoration
• Pulp Chamber
• Seines Line
Types of DNA Database
• Sex Offender Database• Felony Offender Database• Felony Arrest Database• All Type Arrest Database Total 1,407,000 DNA Profiles in US
CODIS database and 64,500 in forensic database.
DNA Typing Emerging Trends
• SNPs Analysis• Ethno-geographic Origin• Robotic Platform Automation• Data Acquisition and Analysis• Microbial DNA Typing• Non-human DNA Analysis• Bio-geographical Ancestry• Age Determination
Solid
2D AI
Extract
A.E
Divide into Three Equal Amount
Conclusive results
NR, INC, NAD
NR, INC, NAD
Conclusive results
NC
NC Non-concordant concordant Group
HUMAN VARIATION
HUMAN EVOLUTION
CULTURAL ANTHROPOLOGY
ARCHAEOLOGY
LINGUISTICS
Forensic Specialty in human skeletal biology who apply their skills to medicolegal cases
Study of Human Physical Variation and Evolution in Relationship to Behavioral Patterns and Cultures
• Are the Remain Human• Are the Remain Recent• Identification of the
Remain• Estimation of Age• Determination of Sex,
Race, Stature• Manner and Cause of
Death• Means and Facts
related to Death
Bite Mark Evidence may involve:
• Rape, Sexual Attack
• Child/ Senior Abuse
• Sexual Activity
• Assault & Battery
• Homicide
Collection of Bite Mark Evidence
1. Photograph General Location
2. Photograph Close-up View
3. Photograph with Scale
4. Swab Saliva Stain
5. Measurement and Sketch
6. Casting of Impression
Location of Bite MarksHeterosexual Assault Homosexual Assault
Female Victim• Breast• Thigh• Ant. Shoulder• Public areas• Neck• Arm• Buttock
Male Victim• Upper Back• Penis• Axilla• Scrotum• Neck• Arm• Breast
Male Victim• Abdomen• Chest• Arm
CRIME SCENE RECONSTRUCTION
• Re-evaluate Witness Statement• Conduct Scene Analysis• Review Results of Evidence• Apply New Technology• Search Missing Clues• Develop New Leads
Crime Scene
Collection of
information
Hypothesis
Logic
Pattern evidence
Physical evidence
Literature & data
Reports & Records
Investigate Report
Witness’s statements
Verification of information
Coordination of information
Pattern evidence
Physical evidence
Theory
Reconstruction
Types of Bite Marks
• Single Tooth Impression
• Multiple Teeth Impressions
• Bruise or Rub Pattern
• Sucking Marks
• Laceration
• Avulsion of Tissue
Prove / Disprove AlibiProve / Disprove Alibi
• Direct/Indirect Involvement
• Sequence of Events
• Self Defense vs. Homicide
• Location / Position Verification
• Active/Passive Scene
• Organized/Disorganized Scene
• Primary/Secondary Scene
• Direct/Indirect Involvement
• Sequence of Events
• Self Defense vs. Homicide
• Location / Position Verification
• Active/Passive Scene
• Organized/Disorganized Scene
• Primary/Secondary Scene
Variations Factors
• Skin factor• Distortion factors• Direction and amount of force• Action and Reaction• Variability of Force• Variability of Movement• Reproducibility of the Pattern• Teeth Variability• Subsequent Alterations
Expert Opinions
• Different• Consistent with• Similar to• Possible• Probable• To a reasonable Dental Certainty• Match• Can not be determine