Comparison between five commonly used two-dimensional methods of human bite mark overlay production from the dental study casts
Aim: The present study was conducted to determine the most accurate bite mark overlay fabrication technique by studying two physical characteristics, i.e., area and rotation of biting edges of anterior teeth of thirty volunteers. The objective of the study was to evaluate the reliability and efficac...
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| Format: | Article |
| Language: | English |
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Wolters Kluwer Medknow Publications
2011-01-01
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| Series: | Indian Journal of Dental Research |
| Subjects: | |
| Online Access: | http://www.ijdr.in/article.asp?issn=0970-9290;year=2011;volume=22;issue=3;spage=493;epage=493;aulast=Maloth |
| _version_ | 1818250351083520000 |
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| author | Saritha Maloth K S Ganapathy |
| author_facet | Saritha Maloth K S Ganapathy |
| author_sort | Saritha Maloth |
| collection | DOAJ |
| description | Aim: The present study was conducted to determine the most accurate bite mark overlay fabrication technique by studying two physical characteristics, i.e., area and rotation of biting edges of anterior teeth of thirty volunteers. The objective of the study was to evaluate the reliability and efficacy of five commonly used methods of human bite mark overlays using two dimensional (2D) digital images of dental study casts as a gold standard, to rank different methods according to statistically based determination of relative accuracy of each method and to determine its feasibility in Forensic science.
Materials and Methods: Overlays were produced from the biting surfaces of six upper and six lower anterior teeth of 30 volunteers using the following five methods: a) hand tracing from study casts, b) hand tracing from wax impressions, c) xerographic method, d) radiopaque impression method and e) 2D computer-based method. Area of the biting edges of the anterior teeth and relative rotation of each anterior tooth were measured and compared.
Results: The xerographic method was determined to be the more accurate method with respect to tooth area and rotation. Hand tracing methods, from either wax impressions of teeth or directly from study casts, were determined to be inaccurate and subjective.
Conclusions: It is recommended that forensic odontologists discontinue the use of hand tracing overlays in bite mark comparison cases as there is lot of scope for manipulation and observer bias. |
| first_indexed | 2024-12-12T15:51:00Z |
| format | Article |
| id | doaj.art-5bee20966ac546b3a1cacee5ca76384e |
| institution | Directory Open Access Journal |
| issn | 0970-9290 1998-3603 |
| language | English |
| last_indexed | 2024-12-12T15:51:00Z |
| publishDate | 2011-01-01 |
| publisher | Wolters Kluwer Medknow Publications |
| record_format | Article |
| series | Indian Journal of Dental Research |
| spelling | doaj.art-5bee20966ac546b3a1cacee5ca76384e2022-12-22T00:19:36ZengWolters Kluwer Medknow PublicationsIndian Journal of Dental Research0970-92901998-36032011-01-0122349349310.4103/0970-9290.87079Comparison between five commonly used two-dimensional methods of human bite mark overlay production from the dental study castsSaritha MalothK S GanapathyAim: The present study was conducted to determine the most accurate bite mark overlay fabrication technique by studying two physical characteristics, i.e., area and rotation of biting edges of anterior teeth of thirty volunteers. The objective of the study was to evaluate the reliability and efficacy of five commonly used methods of human bite mark overlays using two dimensional (2D) digital images of dental study casts as a gold standard, to rank different methods according to statistically based determination of relative accuracy of each method and to determine its feasibility in Forensic science. Materials and Methods: Overlays were produced from the biting surfaces of six upper and six lower anterior teeth of 30 volunteers using the following five methods: a) hand tracing from study casts, b) hand tracing from wax impressions, c) xerographic method, d) radiopaque impression method and e) 2D computer-based method. Area of the biting edges of the anterior teeth and relative rotation of each anterior tooth were measured and compared. Results: The xerographic method was determined to be the more accurate method with respect to tooth area and rotation. Hand tracing methods, from either wax impressions of teeth or directly from study casts, were determined to be inaccurate and subjective. Conclusions: It is recommended that forensic odontologists discontinue the use of hand tracing overlays in bite mark comparison cases as there is lot of scope for manipulation and observer bias.http://www.ijdr.in/article.asp?issn=0970-9290;year=2011;volume=22;issue=3;spage=493;epage=493;aulast=MalothBite marksbite mark techniquesoverlays |
| spellingShingle | Saritha Maloth K S Ganapathy Comparison between five commonly used two-dimensional methods of human bite mark overlay production from the dental study casts Indian Journal of Dental Research Bite marks bite mark techniques overlays |
| title | Comparison between five commonly used two-dimensional methods of human bite mark overlay production from the dental study casts |
| title_full | Comparison between five commonly used two-dimensional methods of human bite mark overlay production from the dental study casts |
| title_fullStr | Comparison between five commonly used two-dimensional methods of human bite mark overlay production from the dental study casts |
| title_full_unstemmed | Comparison between five commonly used two-dimensional methods of human bite mark overlay production from the dental study casts |
| title_short | Comparison between five commonly used two-dimensional methods of human bite mark overlay production from the dental study casts |
| title_sort | comparison between five commonly used two dimensional methods of human bite mark overlay production from the dental study casts |
| topic | Bite marks bite mark techniques overlays |
| url | http://www.ijdr.in/article.asp?issn=0970-9290;year=2011;volume=22;issue=3;spage=493;epage=493;aulast=Maloth |
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