Individual Evidence Bite marks, like fingerprints, are unique and a forensic dentist will be able to make a cast or take pictures of the bite marks  

Slides:



Advertisements
Similar presentations
Presentation developed by T. Trimpe 2010
Advertisements

“Impressive” Evidence.
Objective: You will be able to discuss the impacts each scientist had on developing the field of forensics. Do Now: Read p. 2-3 (history and development.
Odontology Taking a bite out of crime. What is odontology? The characteristics of teeth after death. Also forensic dentistry or bite mark evidence expertise.
Chapter 8 – Forensic Odontology
Admissible evidence used in a court of law from bite marks can be found on A. the victim only B. the perpetrator only C. both the victim and the perpetrator.
1 FORENSIC SCIENCE Prints Day 7 Update your assignment sheet: l You should have back: l AFIS practice: Stamped if complete l Red Lips lab- 15 points.
Tool Marks and Impressions. Tool Manufacturing  When tools are made, during the manufacturing process imperfections are left on the tools’ surface. 
Forensics and Biometrics Presented by: Anita Schulek and Ann Cioffi.
Copyright © 2013 Crosscutting Concepts, LLC. All Rights Reserved.
Bite Marks Dr. M. Diamond. Dental Identification Victims –Especially from fires or explosions –By dental records Suspects –Match dental impressions to.
Analysis of bitemar ks. Forensic Dentistry We will focus on a specific element of forensic dentistry – specifically, bitemark analysis –Here, a dentist.
Forensic Dentistry We will focus on a specific element of forensic dentistry – specifically, bitemark analysis Here, a dentist is required to compare the.
Impressions Evidence Activity. Casting Shoe Impressions Materials: shoe box partially filled with soil, a can of aerosol hair spray with a lacquer base.
distinguish between patient, latent, and plastic impressions
Bite marks, like fingerprints, are unique and a forensic dentist will be able to make a cast or take pictures of the bite marks (which bruise in the.
Forensic Odontology. Definition Forensic Odontology is the application of dental science to the administration of the law and the furtherance of justice.
Forensic Odontology.
Dental Identification and Lip Prints
Presentation developed by T. Trimpe 2007
ODONTOLOGY Forensic Dentistry. Definition of Odontology “The application of the arts & sciences of dentistry to the legal system.” –Identification of.
FORENSIC SCIENCE.
Odontology Forensic Dentistry: The application of dental knowledge to civil and criminal matters.
 Application of dental science to the identification of human remains and bite marks using physical and biological evidence.
Forensic Odontologist Derek Borgen Chem 190 MW 9-950am.
FORENSIC ODONTOLOGY. What is a Forensic Odontologist? A dentist, who consults in human identification cases, NOT FULL TIME Works with cases of violent.
Impression evidence can be defined as objects or materials that have retained the characteristics of other objects through direct contact. Impressions.
Forensic Odontology © 2012 Cengage Learning. All Rights Reserved.
Forensic Science Activity
Forensic Odontology.
What do they tell us? IMPRESSIONS. Forensic Impressions Shoes are a Fascinating Item of Clothing Since criminals must enter and exit crime scene areas,
Impressions Tooth Mark Comparisons
Analysis of Bitemarks.
FORENSIC ODONTOLOGY. History 66 A.D. Nero, the Roman Emperor. Nero's mother Agrippina had her soldiers kill Lollia Paulina, with instructions to bring.
Forensic Odontology Forensic odontology is a unique field that combines the skills of a specially trained dentist with those of law enforcement. The forensic.
Forensic Science Activity
FORENSIC SCIENCE.
Forensic Odontology © 2012 Cengage Learning. All Rights Reserved.
Forensic Odontology.
Forensic Odontology.
Forensic Odontology Part II
distinguish between patent, latent, and plastic impressions
Determining Positive Identification (Obj 11.3, 11.5)
Forensic Dentistry (II) (bite Marks)
Forensic Odontology Forensic odontology is a unique field that combines the skills of a specially trained dentist with those of law enforcement. The forensic.
Forensic Odontology Forensic odontology is a unique field that combines the skills of a specially trained dentist with those of law enforcement. The forensic.
Terminology Odontology –dentistry; the study of the teeth
(Discussion – Impression Evidence Part 1)
Forensic Odontology.
Forensic Science Activity
Bite Mark and Teeth Impression Evidence
Evaluation & Assessment
“Impressive” Evidence
“Impressive” Evidence.
Teeth Basics Approximately 32 teeth in the adult mouth, 20 teeth in adolescents Four Types of Teeth: Molars Premolars Canine or cuspid Incisors.
Catalyst – What are impressions?
Forensic Science Activity
Forensic Odontology.
“Impressive” Evidence.
Evaluation & Assessment
“Impressive” Evidence.
Forensic Science Activity
Bite Mark Identification
Impressive Evidemce.
“Impressive” Evidence
Evaluation & Assessment
Forensic Odontology © 2012 Cengage Learning. All Rights Reserved.
Bite Mark Identification.
Warm Up Objective: Scientists will describe forensic odontology by examining and analyzing forensic odontology evidence. What is the topic? What will.
“Impressive” Evidence
Presentation transcript:

Individual Evidence Bite marks, like fingerprints, are unique and a forensic dentist will be able to make a cast or take pictures of the bite marks  

Forensic dentists use several different terms to describe the type of bite mark: Abrasion - a scrape on the skin Artifact - when a piece of the body, such as an ear lobe, is removed through biting Avulsion - a bite resulting in the removal of skin Contusion - a bruise Hemorrhage - a profusely bleeding bite Incision - a clean, neat wound Laceration - a puncture wound

Types of Bites A clear impression means that there was significant pressure; obvious bite signifies medium pressure noticeable impression means that the biter used violent pressure to bite down.

Clear, obvious, noticeable  

Characteristics A human bite mark will often be elliptical or circular and will display the specific characteristics of the teeth  

Food can be evidence Comparing the Bite patterns on food

Measurements

Matching mold to bite mark

Analysis of Bite Mark

Class Characteristics Shape of the mouth arch Tooth alignment, thickness,width and spacing Missing teeth Other unique features

Terminology Positive identification-exact match Possible identification-consistencies exist, but not enough to make an exact match Insufficient evidence-not enough evidence Exclusion-do NOT match

Becoming a Forensic Dentist In the United States, many forensic dentists are certified by the American Board of Forensic Odontology. There is a long list of qualifications to obtain this certification, including: Complete coursework at an approved school such as the Armed Forces Institute of Pathology or the School of Dentistry at the University of Texas at San Antonio Be present and participate in meetings of national organizations related to forensics or forensic dentistry Work with a coroner, medical examiner's office or law enforcement for at least two years Work on at least 25 forensic dental cases, including 15 positive identification cases and two bite-mark cases

Part 1: Make an Impression 1 – Fold the Styrofoam plate in half. 2 – Label one side MAXILLA and the other MANDIBLE. 3 – Gently bite down on the plate to leave your bite mark impression. 4 – Place a sheet of the plastic film over the impression and use a permanent marker to recreate the pattern to match that of your bite mark. 5 – Use a ruler to make the measurements shown and record in the table below along with any notes regarding unique characteristics you observe in the teeth. Maxilla Mandible Depth Maxilla Width Mandible http://forensicfact.files.wordpress.com/2008/05/cast_negative_resized_copy.jpg